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Cherednichenko K, Smirnov E, Rubtsova M, Repin D, Semenov A. New Fire-Retardant Open-Cell Composite Polyurethane Foams Based on Triphenyl Phosphate and Natural Nanoscale Additives. Polymers (Basel) 2024; 16:1741. [PMID: 38932089 PMCID: PMC11207528 DOI: 10.3390/polym16121741] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2024] [Revised: 05/29/2024] [Accepted: 06/14/2024] [Indexed: 06/28/2024] Open
Abstract
Despite the mechanical and physical properties of polyurethane foams (PUF), their application is still hindered by high inflammability. The elaboration of effective, low-cost, and environmentally friendly fire retardants remains a pressing issue that must be addressed. This work aims to show the feasibility of the successful application of natural nanomaterials, such as halloysite nanotubes and nanocellulose, as promising additives to the commercial halogen-free, fire-retardant triphenyl phosphate (TPP) to enhance the flame retardance of open-cell polyurethane foams. The nanocomposite foams were synthesized by in situ polymerization. Investigation of the mechanical properties of the nanocomposite PUF revealed that the nanoscale additives led to a notable decrease in the foam's compressibility. The obtained results of the flammability tests clearly indicate that there is a prominent synergetic effect between the fire-retardant and the natural nanoscale additives. The nanocomposite foams containing a mixture of TPP (10 and 20 parts per hundred polyol by weight) and either 10 wt.% of nanocellulose or 20 wt.% of halloysite demonstrated the lowest burning rate without dripping and were rated as HB materials according to UL 94 classification.
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Affiliation(s)
| | | | | | | | - Anton Semenov
- Department of Physical and Colloid Chemistry, National University of Oil and Gas «Gubkin University», 65 Leninsky Prospekt, Moscow 119991, Russia; (K.C.); (E.S.); (M.R.); (D.R.)
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2
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Du J, Zheng J, Xin C, He Y. Phosphorus/Bromine Synergism Improved the Flame Retardancy of Polyethylene Terephthalate Foams. Polymers (Basel) 2024; 16:1690. [PMID: 38932040 PMCID: PMC11207934 DOI: 10.3390/polym16121690] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2024] [Revised: 05/30/2024] [Accepted: 06/07/2024] [Indexed: 06/28/2024] Open
Abstract
Polyethylene terephthalate (PET) foams have the characteristics of being lightweight and high strength, as well as offering good heat resistance, minimal water absorption, etc., and they have been widely used in the wind power field. In addition, they are being promisingly applied in automotive, rail, marine, construction, and other related fields. Therefore, the flame retardancy(FR) of PET foams is an issue that requires investigation. The addition of flame retardants would affect the chain extension reaction, viscoelasticity, and foamability of PET. In this study, zinc diethyl hypophosphite (ZDP) and decabromodiphenylethane (DBDPE) were used to form a synergistic FR system, in which ZDP is an acid source and DBDPE is a gas source, and both of them synergistically produced an expanded carbon layer to improve the flame retardancy of PET foams. The ratio of ZDP and DBDPE is crucial for the carbon yield and the expansion and thermal stability of the char layers. At the ZDP/DBDPE ratios of 9/3 and 7/5, the thickness of the char layers is about 3-4 mm, the limiting oxygen index (LOI) values of FR modified PET are 32.7% and 33.6%, respectively, and the vertical combustion tests both reached the V-0 level. As for the extruded phosphorous/bromine synergism FR PET foams, ZDP/DBDPE ratios of 3:1 and 2:1 were applied. As a result, the vertical combustion grade of foamed specimens could still reach V-0 grade, and the LOI values are all over 27%, reaching the refractory grade.
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Affiliation(s)
| | | | - Chunling Xin
- College of Mechanical and Electronically Engineering, Beijing University of Chemical Technology, Beijing 100029, China (J.Z.); (Y.H.)
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3
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Mohammadi Dehcheshmeh I, Poursattar Marjani A, Sadegh F, Soltani ME, Safaeirad M, Frediani M. Synthesis and characterization of flame retardant unsaturated polyester-allyloxysilane resin for wood coatings. Sci Rep 2024; 14:13410. [PMID: 38862561 PMCID: PMC11167065 DOI: 10.1038/s41598-024-62765-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2024] [Accepted: 05/21/2024] [Indexed: 06/13/2024] Open
Abstract
Fireproof coatings are the simplest, most efficient, and oldest method for protecting a wide range of flammable products, such as wood. Furthermore, surface ignition is the initial phase, so surface protection is essential to reduce fire propagation. Furthermore, delaying the spread of flames can help to save someone when a fire starts. This project synthesized flame-resistant resin starting from tetraallyloxysilane monomer as a halogen-free monomer, an intrinsic flame retardant co-curing agent. The following step synthesized polyester resin using terephthalic acid as a heat-resistant resin. Unsaturated polyester was used by bulk radical polymerization. FT-IR and 1H-NMR analysis showed the successful synthesis of the desired monomer and polymeric compound. The thermal degradation and flame retardancy of pure unsaturated polyester resin (UPE) and allyloxysilane-unsaturated polyester (AUPE) were investigated by thermogravimetric analysis (TGA/DTG/DSC). The burning test and the thermal stability of the coating layers were evaluated using standard UL 94. Physical properties of resins were evaluated using Heat Deflection Temp tests (HDT) ISO 75-A, ASTM 648, Hardness ASTM D2583, Volumetric shrinkage ASTM 3521, and Water absorption ASTM D570. The results of the tests show the successful synthesis and their flame retardant properties.
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Affiliation(s)
- Iman Mohammadi Dehcheshmeh
- Department of Organic Chemistry, Faculty of Chemistry, Urmia University, Urmia, Iran.
- Department of Chemistry "Ugo Schiff", University of Florence, Via della Lastruccia, 3-13, 50019, Sesto Fiorentino, Florence, Italy.
| | | | - Fatemeh Sadegh
- Department of Chemistry, Faculty of Sciences, University of Sistan and Baluchestan, Zahedan, Iran
| | | | - Mohammad Safaeirad
- Tuka Paint Foolad Sepahan Industrial and Manufacturing Company Unit Resin Research and Development Center, Shahreza, Isfahan, Iran
| | - Marco Frediani
- Department of Chemistry "Ugo Schiff", University of Florence, Via della Lastruccia, 3-13, 50019, Sesto Fiorentino, Florence, Italy
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Qu M, Guo Y, Cai Y, Nie Z, Zhang C. Upgrading Polyolefin Plastic Waste into Multifunctional Porous Graphene using Silicone-Assisted Direct Laser Writing. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024:e2310273. [PMID: 38794868 DOI: 10.1002/smll.202310273] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/10/2023] [Revised: 05/07/2024] [Indexed: 05/26/2024]
Abstract
The widespread use of plastics, especially polyolefin including polyethylene and polypropylene, has led to severe environmental crises. Chemical recycling, a promising solution for extracting value from plastic waste, however, is underutilized due to its complexity. Here, a simple approach, silicone-assisted direct laser writing (SA-DLW) is developed, to upgrade polyolefin plastic waste into multifunctional porous graphene, called laser-induced graphene (LIG). This method involves infiltrating polyolefins with silicone, which retards ablation during the DLW process and supplies additional carbon atoms, as confirmed by experimental and molecular dynamic results. A remarkable conversion yield of 38.3% is achieved. The upgraded LIG exhibited a porous structure and high conductivity, which is utilized for the fabrication of diverse energy and electronic devices with commendable performance. Furthermore, the SA-DLW technique is versatile for upgrading plastic waste in various types and forms. Upgrading plastic waste in the form of fabric has significantly simplified pre-treatment. Finally, a wearable flex sensor is fabricated on the non-woven fabric of a discarded medical mask, which is applied for gesture monitoring. This work offers a simple but effective solution to upgrade plastic waste into valuable products, contributing to the mitigation of environmental challenges posed by plastic pollution.
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Affiliation(s)
- Menglong Qu
- College of Engineering, Nanjing Agricultural University, Nanjing, 210031, China
| | - Yani Guo
- School of Mechanical and Power Engineering, Nanjing Tech University, Nanjing, 211816, China
- Sinopec Nanjing Engineering & Construction Incorporation, Nanjing, 210049, China
| | - Yahan Cai
- College of Engineering, Nanjing Agricultural University, Nanjing, 210031, China
| | - Zhengwei Nie
- School of Mechanical and Power Engineering, Nanjing Tech University, Nanjing, 211816, China
| | - Cheng Zhang
- College of Engineering, Nanjing Agricultural University, Nanjing, 210031, China
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5
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Cabello-Alvarado CJ, Andrade-Guel M, Pérez-Alvarez M, Cadenas-Pliego G, Bartolo-Pérez P, Martínez-Carrillo D, Quiñones-Jurado ZV. Green Flame-Retardant Blend Used to Improve the Antiflame Properties of Polypropylene. Polymers (Basel) 2024; 16:1317. [PMID: 38794510 PMCID: PMC11126108 DOI: 10.3390/polym16101317] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2024] [Revised: 04/30/2024] [Accepted: 05/03/2024] [Indexed: 05/26/2024] Open
Abstract
The flammability properties of polymers and polymeric composites play an important role in ensuring the safety of humans and the environment; moreover, flame-retardant materials ensure a greater number of applications. In the present study, we report the obtaining of polypropylene (PP) composites contain a mixture of two green flame retardants, lignin and clinoptilolite, by melt extrusion. These additives are abundantly found in nature. Fourier transform infrared (FT-IR), thermogravimetric analysis (TGA), mechanical properties, scanning electron microscopy-energy dispersive X-ray spectroscopy (SEM-EDS), cone calorimetry, UL-94, and carbonized residues analysis were carried out. TGA analysis shows that PPGFR-10 and PPGFR-20 compounds presented better thermal stability with respect to PP without flame retardants. The conical calorimetric evaluation of the composites showed that PPGFR-10 and PPGFR-20 presented decreases in peak heat release rates (HRRs) of 9.75% and 11.88%, respectively. The flammability of the composites was evaluated with the UL-94 standard, and only the PPGFR-20 composite presented the V-0 and 5VB classification, which indicates good flame-retardant properties. Additives in the polymer matrix showed good dispersion with few agglomerates. The PPGFR-20 composite showed an FRI value of 1.15, higher percentage of carbonized residues, and UL-94 V-0 and 5VB rating, suggesting some kind of synergy between lignin and clinoptilolite, but only at high flame-retardant concentrations.
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Affiliation(s)
- Christian J. Cabello-Alvarado
- Centro de Investigación en Química Aplicada, Saltillo 25294, Coahuila, Mexico; (C.J.C.-A.); (M.P.-A.)
- CONAHCYT—Centro de Investigación en Química Aplicada, Saltillo 25294, Coahuila, Mexico
| | - Marlene Andrade-Guel
- Centro de Investigación en Química Aplicada, Saltillo 25294, Coahuila, Mexico; (C.J.C.-A.); (M.P.-A.)
| | - Marissa Pérez-Alvarez
- Centro de Investigación en Química Aplicada, Saltillo 25294, Coahuila, Mexico; (C.J.C.-A.); (M.P.-A.)
| | - Gregorio Cadenas-Pliego
- Centro de Investigación en Química Aplicada, Saltillo 25294, Coahuila, Mexico; (C.J.C.-A.); (M.P.-A.)
| | - Pascual Bartolo-Pérez
- Centro de Investigación y de Estudios Avanzados del IPN-Unidad Mérida, Departamento de Física Aplicada, Mérida 97310, Yucatán, Mexico;
| | - Diego Martínez-Carrillo
- Centro de Investigación en Geociencias Aplicadas, Universidad Autónoma de Coahuila, Nueva Rosita 26830, Coahuila, Mexico;
| | - Zoe V. Quiñones-Jurado
- Facultad de Ciencias Químicas, Universidad Juárez del Estado de Durango, Durango 34120, Durango, Mexico;
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6
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Lin W, Yuan Y, Xu L, Wang W. Recent Progress in Two-Dimensional Nanomaterials for Flame Retardance and Fire-Warning Applications. Molecules 2024; 29:1858. [PMID: 38675677 PMCID: PMC11055176 DOI: 10.3390/molecules29081858] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2024] [Revised: 04/12/2024] [Accepted: 04/17/2024] [Indexed: 04/28/2024] Open
Abstract
Graphene-like 2D nanomaterials, such as graphene, MXene, molybdenum disulfide, and boron nitride, present a promising avenue for eco-friendly flame retardants. Their inherent characteristics, including metal-like conductivity, high specific surface area, electron transport capacity, and solution processability, make them highly suitable for applications in both structural fire protection and fire alarm systems. This review offers an up-to-date exploration of advancements in flame retardant composites, utilizing pristine graphene-like nanosheets, versatile graphene-like nanosheets with multiple functions, and collaborative systems based on these nanomaterials. Moreover, graphene-like 2D nanomaterials exhibit considerable potential in the development of early fire alarm systems, enabling timely warnings. This review provides an overview of flame-retarding and fire-warning mechanisms, diverse multifunctional nanocomposites, and the evolving trends in the development of fire alarm systems anchored in graphene-like 2D nanomaterials and their derivatives. Ultimately, the existing challenges and prospective directions for the utilization of graphene-like 2D nanomaterials in flame retardant and fire-warning applications are put forward.
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Affiliation(s)
- Weiliang Lin
- Fujian Provincial Key Laboratory of Functional Materials and Applications, School of Materials Science and Engineering, Xiamen University of Technology, Xiamen 361024, China;
| | - Yao Yuan
- Fujian Provincial Key Laboratory of Functional Materials and Applications, School of Materials Science and Engineering, Xiamen University of Technology, Xiamen 361024, China;
| | - Lulu Xu
- School of Chemical Engineering, University of New South Wales, Sydney, NSW 2052, Australia;
| | - Wei Wang
- School of Mechanical and Manufacturing Engineering, University of New South Wales, Sydney, NSW 2052, Australia
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7
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Miao L, Zhan L, Liao S, Li Y, He T, Yin S, Wu L, Qiu H. The Recent Advances of Polymer-POSS Nanocomposites With Low Dielectric Constant. Macromol Rapid Commun 2024; 45:e2300601. [PMID: 38232689 DOI: 10.1002/marc.202300601] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2023] [Revised: 12/22/2023] [Indexed: 01/19/2024]
Abstract
This study provides a comprehensive overview of the preparation methods for polyhedral oligomeric silsesquioxane (POSS) monomers and polymer/POSS nanocomposites. It focuses on the latest advancements in using POSS to design polymer nanocomposites with reduced dielectric constants. The study emphasizes exploring the potential of POSS, either alone or in combination with other materials, to decrease the dielectric constant and dielectric loss of various polymers, including polyimides, bismaleimide resins, poly(aryl ether)s, polybenzoxazines, benzocyclobutene resins, polyolefins, cyanate ester resins, and epoxy resins. In addition, the research investigates the impact of incorporating POSS on improving the thermal properties, mechanical properties, surface properties, and other aspects of these polymers. The entire study is divided into two parts, discussing systematically the role of POSS in reducing dielectric constants during the preparation of POSS composites using both physical blending and chemical synthesis methods. The goal of this research is to provide valuable strategies for designing a new generation of low dielectric constant materials suitable for large-scale integrated circuits in the semiconductor materials domain.
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Affiliation(s)
- Li Miao
- Key Laboratory of Organosilicon Chemistry and Materials Technology of Ministry of Education, College of Material, Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou, 311121, P.R. China
| | - Lingling Zhan
- Key Laboratory of Organosilicon Chemistry and Materials Technology of Ministry of Education, College of Material, Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou, 311121, P.R. China
| | - Shenglong Liao
- School of engineering, Hangzhou Normal University, Hangzhou, 311121, P.R. China
| | - Yang Li
- Key Laboratory of Organosilicon Chemistry and Materials Technology of Ministry of Education, College of Material, Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou, 311121, P.R. China
| | - Tian He
- Key Laboratory of Organosilicon Chemistry and Materials Technology of Ministry of Education, College of Material, Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou, 311121, P.R. China
| | - Shouchun Yin
- Key Laboratory of Organosilicon Chemistry and Materials Technology of Ministry of Education, College of Material, Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou, 311121, P.R. China
| | - Lianbin Wu
- Key Laboratory of Organosilicon Chemistry and Materials Technology of Ministry of Education, College of Material, Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou, 311121, P.R. China
| | - Huayu Qiu
- Key Laboratory of Organosilicon Chemistry and Materials Technology of Ministry of Education, College of Material, Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou, 311121, P.R. China
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8
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Li P, Wang J, Wang C, Xu C, Ni A. The Flame Retardant and Mechanical Properties of the Epoxy Modified by an Efficient DOPO-Based Flame Retardant. Polymers (Basel) 2024; 16:631. [PMID: 38475315 DOI: 10.3390/polym16050631] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2024] [Revised: 01/31/2024] [Accepted: 02/06/2024] [Indexed: 03/14/2024] Open
Abstract
Currently, the mechanical performance reduction caused by excessive phosphorus content in the halogen-free flame-retardant EP has been an obstacle to its extensive application. This study presents the effective synthesis of a novel flame-retardant BDD with great efficiency, achieving an optimum phosphorus level of merely 0.25 wt %. The structure of BDD was verified by FTIR, 1H NMR, 31P NMR and XPS spectra. To investigate the flame-retardant properties of BDD, several EPs with various phosphorus levels were synthesized. The addition of phosphorus to the EP significantly increases its LOI value from 25.8% to 33.4% at a phosphorus level of 0.25 wt%. Additionally, the resin achieves a V-0 grade in the UL 94 test. The P-HRR and THR of the modified resin measured by the cone calorimeter are also significantly reduced. At the same time, the addition of a modest quantity of BDD has a minimal impact on the mechanical properties of epoxy resin. This study shows that the removal of hydroxyl groups significantly enhances the fire resistance of phosphate-based flame retardants, thereby providing a novel approach to synthesizing efficient flame retardants.
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Affiliation(s)
- Pengyu Li
- School of Materials Science and Engineering, Wuhan University of Technology, Wuhan 430070, China
| | - Jihui Wang
- School of Materials Science and Engineering, Wuhan University of Technology, Wuhan 430070, China
| | - Changzeng Wang
- School of Materials Science and Engineering, Wuhan University of Technology, Wuhan 430070, China
| | - Chengxin Xu
- School of Materials Science and Engineering, Wuhan University of Technology, Wuhan 430070, China
| | - Aiqing Ni
- School of Materials Science and Engineering, Wuhan University of Technology, Wuhan 430070, China
- State Key Laboratory of Advanced Technology for Material Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, China
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9
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Lu S, Chen X, Zhang B, Lu Z, Jiang W, Fang X, Li J, Liu B, Ding T, Xu Y. Synergistic Modification of Polyformaldehyde by Biobased Calcium Magnesium Bi-Ionic Melamine Phytate with Intumescent Flame Retardant. Polymers (Basel) 2024; 16:614. [PMID: 38475298 DOI: 10.3390/polym16050614] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2023] [Revised: 02/01/2024] [Accepted: 02/08/2024] [Indexed: 03/14/2024] Open
Abstract
Intumescent flame retardants (IFRs) are mainly composed of ammonium polyphosphate (APP), melamine (ME), and some macromolecular char-forming agents. The traditional IFR still has some defects in practical application, such as poor compatibility with the matrix and low flame-retardant efficiency. In order to explore the best balance between flame retardancy and mechanical properties of flame-retardant polyformaldehyde (POM) composite, a biobased calcium magnesium bi-ionic melamine phytate (DPM) synergist was prepared based on renewable biomass polyphosphate phytic acid (PA), and its synergistic system with IFRs was applied to an intumescent flame-retardant POM system. POM/IFR systems can only pass the V-1 grade of the vertical combustion test (UL-94) if they have a limited oxygen index (LOI) of only 48.5%. When part of an IFR was replaced by DPM, the flame retardancy of the composite was significantly improved, and the POM/IFR/4 wt%DPM system reached the V-0 grade of UL-94, and the LOI reached 59.1%. Compared with pure POM, the PkHRR and THR of the POM/IFR/4 wt%DPM system decreased by 61.5% and 51.2%, respectively. Compared with the POM/IFR system, the PkHRR and THR of the POM/IFR/4 wt%DPM system were decreased by 20.8% and 27.5%, respectively, and carbon residue was increased by 37.2%. The mechanical properties of the composite also showed a continuous upward trend with the increase in DPM introduction. It is shown that the introduction of DPM not only greatly reduces the heat release rate and heat release amount of the intumescent flame-retardant POM system, reducing the fire hazard, but it also effectively improves the compatibility between the filler and the matrix and improves the mechanical properties of the composite. It provides a new approach for developing a new single-component multifunctional flame retardant or synergist for intumescent flame-retardant POM systems.
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Affiliation(s)
- Shike Lu
- Henan Engineering Research Center of Functional Materials and Catalytic Reaction, Henan University, Kaifeng 475001, China
- College of Chemistry and Molecular Sciences, Henan University, Kaifeng 475001, China
| | - Xueting Chen
- College of Chemistry and Molecular Sciences, Henan University, Kaifeng 475001, China
| | - Bin Zhang
- College of Chemistry and Molecular Sciences, Henan University, Kaifeng 475001, China
| | - Zhehong Lu
- National Special Superfine Powder Engineering Research Center of China, Nanjing University of Science and Technology, Nanjing 210014, China
| | - Wei Jiang
- National Special Superfine Powder Engineering Research Center of China, Nanjing University of Science and Technology, Nanjing 210014, China
| | - Xiaomin Fang
- Henan Engineering Research Center of Functional Materials and Catalytic Reaction, Henan University, Kaifeng 475001, China
- College of Chemistry and Molecular Sciences, Henan University, Kaifeng 475001, China
| | - Jiantong Li
- Henan Engineering Research Center of Functional Materials and Catalytic Reaction, Henan University, Kaifeng 475001, China
| | - Baoying Liu
- Henan Engineering Research Center of Functional Materials and Catalytic Reaction, Henan University, Kaifeng 475001, China
| | - Tao Ding
- Henan Engineering Research Center of Functional Materials and Catalytic Reaction, Henan University, Kaifeng 475001, China
- College of Chemistry and Molecular Sciences, Henan University, Kaifeng 475001, China
| | - Yuanqing Xu
- Henan Engineering Research Center of Functional Materials and Catalytic Reaction, Henan University, Kaifeng 475001, China
- College of Chemistry and Molecular Sciences, Henan University, Kaifeng 475001, China
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10
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Zheng K, Zhang Y, Qiu J, Xie G, Huang Z, Lin W, Liu Z, Liu Q, Wang X. Flame-Retardant GF-PSB/DOPO-POSS Composite with Low Dk/Df and High Thermal Stability for High-Frequency Copper Clad Applications. Polymers (Basel) 2024; 16:544. [PMID: 38399922 PMCID: PMC10892954 DOI: 10.3390/polym16040544] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2024] [Revised: 02/14/2024] [Accepted: 02/15/2024] [Indexed: 02/25/2024] Open
Abstract
In the field of high-frequency communications devices, there is an urgent need to develop high-performance copper clad laminates (CCLs) with low dielectric loss (Df) plus good flame retardancy and thermal stability. The hydrocarbon resin styrene-butadiene block copolymer (PSB) was modified with the flame-retardant 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide/polyhedral oligomeric silsesquioxanes (DOPO-POSS) to meet the demands of high-frequency and high-speed applications. The resulting DOPO-POSS-modified PSB was used as the resin matrix along with other additives to fabricate PSB/DOPO-POSS laminates. At a high-frequency of 10 GHz, the laminates containing 20 wt.% of DOPO-POSS and with a thickness of 0.09 mm exhibited a Df of 0.00328, which is much lower compared with the commercial PSB/PX-200 composite (Df: 0.00498) and the PSB without flame retardancy (Df: 0.00453). Afterwards, glass fiber cloth (GF) was used as a reinforcing material to manufacture GF-PSB/DOPO-POSS composite laminates with a thickness of 0.25 mm. The flame retardancy of GF-PSB/DOPO-POSS composite laminate reached vertical burning (UL-94) V-1 grade, and GF-PSB/DOPO-POSS exhibited higher thermal and dynamic mechanical properties than GF-PSB/PX-200. The results of a limited oxygen index (LOI) and self-extinguishing time tests also demonstrated the superior flame-retardant performance of DOPO-POSS compared with PX-200. The investigation indicates that GF-PSB/DOPO-POSS composite laminates have significant potential for use in fabricating a printed circuit board (PCB) for high-frequency and high-speed applications.
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Affiliation(s)
- Ke Zheng
- Sub Center of Dongguan University of Technology of National Engineering Research Center of Electronic Circuits Base Materials, School of Materials Science and Engineering, Dongguan University of Technology, Dongguan 523808, China; (K.Z.); (Y.Z.); (Z.L.)
| | - Yizhi Zhang
- Sub Center of Dongguan University of Technology of National Engineering Research Center of Electronic Circuits Base Materials, School of Materials Science and Engineering, Dongguan University of Technology, Dongguan 523808, China; (K.Z.); (Y.Z.); (Z.L.)
| | - Jiaxiang Qiu
- School of Environment and Civil Engineering, Dongguan University of Technology, Dongguan 523808, China;
| | - Guanqun Xie
- School of Environment and Civil Engineering, Dongguan University of Technology, Dongguan 523808, China;
| | - Zengbiao Huang
- National Engineering Research Center of Electronic Circuits Base Materials, SHENGYI Technology Co., Ltd., Dongguan 523808, China; (Z.H.); (W.L.); (Q.L.)
| | - Wei Lin
- National Engineering Research Center of Electronic Circuits Base Materials, SHENGYI Technology Co., Ltd., Dongguan 523808, China; (Z.H.); (W.L.); (Q.L.)
| | - Zhimeng Liu
- Sub Center of Dongguan University of Technology of National Engineering Research Center of Electronic Circuits Base Materials, School of Materials Science and Engineering, Dongguan University of Technology, Dongguan 523808, China; (K.Z.); (Y.Z.); (Z.L.)
| | - Qianfa Liu
- National Engineering Research Center of Electronic Circuits Base Materials, SHENGYI Technology Co., Ltd., Dongguan 523808, China; (Z.H.); (W.L.); (Q.L.)
| | - Xiaoxia Wang
- Sub Center of Dongguan University of Technology of National Engineering Research Center of Electronic Circuits Base Materials, School of Materials Science and Engineering, Dongguan University of Technology, Dongguan 523808, China; (K.Z.); (Y.Z.); (Z.L.)
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11
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Alosime EM, Basfar AA. A Systematic Investigation on the Effect of Carbon Nanotubes and Carbon Black on the Mechanical and Flame Retardancy Properties of Polyolefin Blends. Polymers (Basel) 2024; 16:417. [PMID: 38337306 DOI: 10.3390/polym16030417] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2023] [Revised: 12/28/2023] [Accepted: 01/14/2024] [Indexed: 02/12/2024] Open
Abstract
Due to high filler loading, clean, commercial, thermoplastic, flame-retardant materials are mechanically unstable when insulating wires and cables. In this study, composite formulations of linear low-density polyethylene (LLDPE)/ethylene-vinyl acetate (EVA) containing a flame retardant, such as magnesium hydroxide (MH; formula: Mg(OH)2) and huntite hydromagnesite (HH; formula: Mg3Ca(CO3)4, Mg5(CO3)4(OH)2·3H2O), were prepared. The influence of carbon nanotubes (CNTs) and carbon black (CB) on the mechanical properties and flame retardancy of LLDPE/EVA was studied. Three types of CNTs were examined for their compatibility with other materials in clean thermoplastic flame-retardant compositions. The CNTs had the following diameters: 10-15 nm, 40-60 nm, and 60-80 nm. Optimum mechanical flame retardancy and electrical properties were achieved by adding CNTs with an outer diameter of 40-60 nm and a length of fewer than 20 nm. Large-sized CNTs result in poor mechanical characteristics, while smaller-sized CNTs improve the mechanical properties of the composites. CB enhances flame retardancy but deteriorates mechanical properties, particularly elongation at break, in clean, black, thermoplastic, flame-retardant compositions. Obtaining satisfactory compositions that meet both properties, especially formulations passing the V-0 of the UL 94 test with a minimum tensile strength of 9.5 MPa and an elongation at break of 125%, is challenging. When LLDPE was partially substituted with EVA, the limiting oxygen index (LOI) increased. The amount of filler in the formulations determined how it affected flammability. This study also included a reliable method for producing clean, black, thermoplastic, flame-retardant insulating material for wire and cable without sacrificing mechanical properties.
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Affiliation(s)
- Eid M Alosime
- King Abdulaziz City for Science and Technology, P.O. Box 6086, Riyadh 11442, Saudi Arabia
| | - Ahmed A Basfar
- M.Sc. in Nuclear Engineering Program, College of Engineering, King Saud University, Riyadh P.O. Box 145111, Saudi Arabia
- Mechanical Engineering Department, College of Engineering, King Saud University, P.O. Box 800, Riyadh 11421, Saudi Arabia
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12
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Wang X, Xing W, Tang G. Advances in Novel Flame-Retardant Technologies for Fire-Safe Polymeric Materials. Molecules 2024; 29:573. [PMID: 38338320 PMCID: PMC10856323 DOI: 10.3390/molecules29030573] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2024] [Accepted: 01/18/2024] [Indexed: 02/12/2024] Open
Abstract
This Special Issue, titled "Advances in Novel Flame-Retardant Technologies for Fire-Safe Polymeric Materials", aims to detail the recent advances in the design and preparation of novel flame retardants for use in fire-safe polymeric materials [...].
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Affiliation(s)
- Xin Wang
- State Key Laboratory of Fire Science, University of Science and Technology of China, Hefei 230026, China
| | - Weiyi Xing
- State Key Laboratory of Fire Science, University of Science and Technology of China, Hefei 230026, China
| | - Gang Tang
- School of Architecture and Civil Engineering, Anhui University of Technology, Ma’anshan 243002, China
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13
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Lu CH, Chang C, Huang YC, You JX, Liang M. Synthesis and Characterization of DOPO-Containing Poly(2,6-dimethyl-1,4-phenylene oxide)s by Oxidative Coupling Polymerization. Polymers (Basel) 2024; 16:303. [PMID: 38276710 PMCID: PMC10818327 DOI: 10.3390/polym16020303] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2023] [Revised: 01/12/2024] [Accepted: 01/12/2024] [Indexed: 01/27/2024] Open
Abstract
A set of polyphenylene oxides incorporating DOPO (9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide) functionality, denoted as DOPO-R-PPO, was synthesized by copolymerization of 2,6-dimethylphenol (2,6-DMP) with various DOPO-substituted tetramethyl bisphenol monomers. In the initial step, a Friedel-Crafts acylation reaction was employed to react 2,6-DMP with different acyl chlorides, leading to the formation of ketone derivatives substituted with 2,6-dimethylphenyl groups. Subsequently, the ketones, along with DOPO and 2,6-DMP, underwent a condensation reaction to yield a series of DOPO-substituted bisphenol derivatives. Finally, polymerizations of 2,6-dimethylphenol with these DOPO-substituted bisphenols were carried out in organic solvents using copper(I) bromide/N-butyldimethylamine catalysts (CuBr/DMBA) under a continuous flow of oxygen, yielding telechelic PPO oligomers with DOPO moieties incorporated into the polymer backbone. The chemical structures of the synthesized compounds were characterized using various analytical techniques, including Fourier transform infrared spectroscopy (FTIR), proton nuclear magnetic resonance (1H NMR), phosphorus nuclear magnetic resonance (31P NMR), differential scanning calorimetry (DSC), and thermogravimetric analysis (TGA). When compared to conventional poly(2,6-dimethyl-1,4-phenylene oxide)s with a similar molecular weight range, all DOPO-PPOs exhibited higher glass transition temperatures, enhanced thermal degradability, and increased char yield formation at 800 °C without compromising solubility in organic solvents.
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Affiliation(s)
| | | | | | | | - Mong Liang
- Department of Applied Chemistry, National Chia-Yi University, Chia-Yi 600, Taiwan; (C.-H.L.); (C.C.); (Y.-C.H.); (J.-X.Y.)
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14
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Jin X, Li X, Yang C, Liu X, Zhu P, Lu Z, Dong C. Enhanced safety and strength of cotton fabrics through a novel 'H-shaped' multiple flame retardant elements agent. Int J Biol Macromol 2024; 256:128457. [PMID: 38016602 DOI: 10.1016/j.ijbiomac.2023.128457] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2023] [Revised: 11/21/2023] [Accepted: 11/24/2023] [Indexed: 11/30/2023]
Abstract
In response to the new concept of green sustainability, it is necessary to expand the functionality of bio-based natural fibers (such as cotton fabrics) to replace fabrics made from fossil fuels. One potential way of achieving this is through the use of phosphorus, boron and nitrogen based organic flame retardants. This article designs a special flame retardant system with high efficiency, high durability, and enhanced fabric strength. An "H" shaped flame retardant (TBSA) is synthesized using hydroxyethyl methylene phosphate, pentaerythritol diborate, and cyanuric chloride. After simple treatment, flame retardant fabric (TBSA/Cotton) is obtained, with a LOI value of 48.8 %. Self extinguishing is completing in the vertical flame test. The high FR efficiency reflects the progressiveness of multi flame retardant elements. It is worth noting that TBSA/Cotton exhibits excellent durability and improves the strength of the fabric. This is attributed to the covalent bonding between the "H" type flame retardant and multiple cellulose molecules, which compensates for the cracks and holes at the submicroscopic scale of natural cellulose and weakens the molecular slip effect. The research results of this article provide a good opportunity for the development of biomass cellulose flame retardant materials.
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Affiliation(s)
- Xin Jin
- College of Textile and Clothing, Institute of Functional Textiles and Advanced Materials, State Key Laboratory of Bio-fibers and Eco-textiles, College of Chemistry and Chemical Engineering Qingdao University, Qingdao 266071, China
| | - Xu Li
- College of Textile and Clothing, Institute of Functional Textiles and Advanced Materials, State Key Laboratory of Bio-fibers and Eco-textiles, College of Chemistry and Chemical Engineering Qingdao University, Qingdao 266071, China
| | - Chenghao Yang
- College of Textile and Clothing, Institute of Functional Textiles and Advanced Materials, State Key Laboratory of Bio-fibers and Eco-textiles, College of Chemistry and Chemical Engineering Qingdao University, Qingdao 266071, China
| | - Xiangji Liu
- College of Textile and Clothing, Institute of Functional Textiles and Advanced Materials, State Key Laboratory of Bio-fibers and Eco-textiles, College of Chemistry and Chemical Engineering Qingdao University, Qingdao 266071, China
| | - Ping Zhu
- College of Textile and Clothing, Institute of Functional Textiles and Advanced Materials, State Key Laboratory of Bio-fibers and Eco-textiles, College of Chemistry and Chemical Engineering Qingdao University, Qingdao 266071, China
| | - Zhou Lu
- College of Textile and Clothing, Institute of Functional Textiles and Advanced Materials, State Key Laboratory of Bio-fibers and Eco-textiles, College of Chemistry and Chemical Engineering Qingdao University, Qingdao 266071, China
| | - Chaohong Dong
- College of Textile and Clothing, Institute of Functional Textiles and Advanced Materials, State Key Laboratory of Bio-fibers and Eco-textiles, College of Chemistry and Chemical Engineering Qingdao University, Qingdao 266071, China.
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15
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Yang Y, Wang R, Leng Y, Wang J, Xu M. An Integrated Multi-Functional Thermal Conductive and Flame Retardant Epoxy Composite with Functionalized Carbon Nitride Nanosheets. Polymers (Basel) 2023; 15:3143. [PMID: 37514531 PMCID: PMC10385693 DOI: 10.3390/polym15143143] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2023] [Revised: 07/18/2023] [Accepted: 07/19/2023] [Indexed: 07/30/2023] Open
Abstract
In miniaturized and integrated electronic devices, thermal potential and fire hazards caused by heat diffusion require an efficient thermal management system with versatile electronic packaging equipment. The flame retardancy was endowed on the surface of carbon nitride after thermal etching (CNNS) containing piperazine pyrophosphate (PPAP) by hydrogen bonding, and the obtained nanosheet was defined as PPAP-CNNS. During solution blending and program-controlled curing, PPAP-CNNS was used as a multifunctional filler to fabricate highly thermoconductive and fire retardant epoxy resin (EP) composites. In line with expectations, the resultant EP composites containing 7 wt% PPAP-CNNS had an exceptional thermal conductivity (TC) of 1.1 W·m-1K-1, which was 4.8 times higher than pure EP. Simultaneously, there was a sharp drop in the heat release rate (HRR), total heat release (THR), smoke production rate (SPR), and total smoke production (TSP) compared to pure EP. These reductions were, respectively, 63.7%, 54.2%, 17.9%, and 57.2%. The addition of PPAP-CNNS increased the specific surface area, which increased the heat conduction routes, and also the shape of the compact and solid char layer during burning, protecting the underlying polymer. These improvements to dispersion and surface functionalization were made possible by the compound. These results indicate that the preparation of integrated multi-functional resin described in this study has a wide application.
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Affiliation(s)
- Yuxin Yang
- Aulin College, Northeast Forestry University, Harbin 150040, China
| | - Ruiping Wang
- Heilongjiang Key Laboratory of Molecular Design and Preparation of Flame Retarded Materials, College of Chemistry, Chemical Engineering and Resource Utilization, Northeast Forestry University, Harbin 150040, China
| | - Yang Leng
- Heilongjiang Key Laboratory of Molecular Design and Preparation of Flame Retarded Materials, College of Chemistry, Chemical Engineering and Resource Utilization, Northeast Forestry University, Harbin 150040, China
| | - Jingchun Wang
- Heilongjiang Key Laboratory of Molecular Design and Preparation of Flame Retarded Materials, College of Chemistry, Chemical Engineering and Resource Utilization, Northeast Forestry University, Harbin 150040, China
| | - Miaojun Xu
- Heilongjiang Key Laboratory of Molecular Design and Preparation of Flame Retarded Materials, College of Chemistry, Chemical Engineering and Resource Utilization, Northeast Forestry University, Harbin 150040, China
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16
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Li J, Yan Z, Liu M, Han X, Lu T, Liu R, Zhao S, Lv Q, Li B, Zhao S, Wang H. Triple Silicon, Phosphorous, and Nitrogen-Grafted Lignin-Based Flame Retardant and Its Vulcanization Promotion for Styrene Butadiene Rubber. ACS OMEGA 2023; 8:21549-21558. [PMID: 37360429 PMCID: PMC10286291 DOI: 10.1021/acsomega.3c00714] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/03/2023] [Accepted: 05/24/2023] [Indexed: 06/28/2023]
Abstract
In this study, we present an innovative environmental silicon-, phosphorus-, and nitrogen-triple lignin-based flame retardant (Lig-K-DOPO). Lig-K-DOPO was successfully prepared by condensation of lignin with flame retardant intermediate DOPO-KH550 synthesized via Atherton-Todd reaction between 9, 10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide (DOPO) and γ-aminopropyl triethoxysilane (KH550A). The presence of silicon, phosphate, and nitrogen groups was characterized by FTIR, XPS, and 31P NMR spectroscopy. Lig-K-DOPO exhibited advanced thermal stability compared with pristine lignin supported by TGA analysis. The curing characteristic measurement showed that addition of Lig-K-DOPO promoted the curing rate and crosslink density to styrene butadiene rubber (SBR). Moreover, the cone calorimetry results indicated Lig-K-DOPO conferred impressive flame retardancy and smoke suppression. The addition of 20 phr Lig-K-DOPO reduced SBR blends 19.1% peak heat release rate (PHRR), 13.2% total heat release (THR), 53.2% smoke production rate (SPR), and 45.7% peak smoke production rate (PSPR). This strategy provides insights into multifunctional additives and greatly extends the comprehensive utilization of industrial lignin.
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Affiliation(s)
- Jianxing Li
- Key
Laboratory of Rubber-Plastics of Ministry of Education/Shandong Provincial
Key Laboratory of Rubber-Plastics, School of Polymer Science and Engineering, Qingdao University of Science & Technology, Qingdao 266042, China
| | - Zepei Yan
- Key
Laboratory of Rubber-Plastics of Ministry of Education/Shandong Provincial
Key Laboratory of Rubber-Plastics, School of Polymer Science and Engineering, Qingdao University of Science & Technology, Qingdao 266042, China
| | - Ming Liu
- Key
Laboratory of Rubber-Plastics of Ministry of Education/Shandong Provincial
Key Laboratory of Rubber-Plastics, School of Polymer Science and Engineering, Qingdao University of Science & Technology, Qingdao 266042, China
| | - Xiaokun Han
- Key
Laboratory of Rubber-Plastics of Ministry of Education/Shandong Provincial
Key Laboratory of Rubber-Plastics, School of Polymer Science and Engineering, Qingdao University of Science & Technology, Qingdao 266042, China
| | - Tianyun Lu
- Key
Laboratory of Rubber-Plastics of Ministry of Education/Shandong Provincial
Key Laboratory of Rubber-Plastics, School of Polymer Science and Engineering, Qingdao University of Science & Technology, Qingdao 266042, China
| | - Ruiyin Liu
- Key
Laboratory of Rubber-Plastics of Ministry of Education/Shandong Provincial
Key Laboratory of Rubber-Plastics, School of Polymer Science and Engineering, Qingdao University of Science & Technology, Qingdao 266042, China
| | - Shugao Zhao
- Key
Laboratory of Rubber-Plastics of Ministry of Education/Shandong Provincial
Key Laboratory of Rubber-Plastics, School of Polymer Science and Engineering, Qingdao University of Science & Technology, Qingdao 266042, China
| | - Qing Lv
- Jiangyin
Haida Rubber and Plastic Co., Ltd., Jiangyin 214424, China
| | - Bo Li
- Jiangyin
Haida Rubber and Plastic Co., Ltd., Jiangyin 214424, China
| | - Shengqin Zhao
- Chair
of Composite Engineering (CCe), Technische
Universität Kaiserslautern (TUK), Kaiserslautern 67663, Germany
| | - He Wang
- Key
Laboratory of Rubber-Plastics of Ministry of Education/Shandong Provincial
Key Laboratory of Rubber-Plastics, School of Polymer Science and Engineering, Qingdao University of Science & Technology, Qingdao 266042, China
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17
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Li R, Xu S, Xu J, Pan T, Sun B, Dang L. Effect of Functionalized Polyethylene Wax on the Melt Processing and Properties of Highly Filled Magnesium Hydroxide/Linear Low-Density Polyethylene Composites. Polymers (Basel) 2023; 15:polym15112575. [PMID: 37299373 DOI: 10.3390/polym15112575] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2023] [Revised: 05/28/2023] [Accepted: 05/28/2023] [Indexed: 06/12/2023] Open
Abstract
The poor processing and rheological properties of highly filled composites caused by the high loading of fillers can be improved with the use of maleic anhydride grafted polyethylene wax (PEWM) as compatibilizer and lubricant. In this study, two PEWMs with different molecular weights were synthesized by melt grafting, and their compositions and grafting degrees were characterized by Fourier transform infrared (FTIR) spectroscopy and acid-base titration. Subsequently, magnesium hydroxide (MH)/linear low-density polyethylene (LLDPE) composites with 60 wt% of MH were prepared using polyethylene wax (PEW) and PEWM, respectively. The equilibrium torque and melt flow index tests indicate that the processability and fluidity of MH/MAPP/LLDPE composites are significantly improved with the addition of PEWM. The addition of PEWM with a lower molecular weight leads to a substantial reduction in viscosity. The mechanical properties are also increased. The limiting oxygen index (LOI) test and cone calorimeter test (CCT) show that both PEW and PEWM have adverse effects on flame retardancy. This study provides a strategy to simultaneously improve the processability and mechanical properties of highly filled composites.
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Affiliation(s)
- Rujie Li
- College of Chemical Engineering, Qinghai University, Xining 810016, China
| | - Shiai Xu
- College of Chemical Engineering, Qinghai University, Xining 810016, China
- College of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Jiajun Xu
- College of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Tongtong Pan
- College of Chemical Engineering, Qinghai University, Xining 810016, China
| | - Beibei Sun
- College of Chemical Engineering, Qinghai University, Xining 810016, China
| | - Li Dang
- College of Chemical Engineering, Qinghai University, Xining 810016, China
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18
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Teixidor F, Núñez R, Viñas C. Towards the Application of Purely Inorganic Icosahedral Boron Clusters in Emerging Nanomedicine. Molecules 2023; 28:molecules28114449. [PMID: 37298925 DOI: 10.3390/molecules28114449] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2023] [Revised: 05/21/2023] [Accepted: 05/24/2023] [Indexed: 06/12/2023] Open
Abstract
Traditionally, drugs were obtained by extraction from medicinal plants, but more recently also by organic synthesis. Today, medicinal chemistry continues to focus on organic compounds and the majority of commercially available drugs are organic molecules, which can incorporate nitrogen, oxygen, and halogens, as well as carbon and hydrogen. Aromatic organic compounds that play important roles in biochemistry find numerous applications ranging from drug delivery to nanotechnology or biomarkers. We achieved a major accomplishment by demonstrating experimentally/theoretically that boranes, carboranes, as well as metallabis(dicarbollides), exhibit global 3D aromaticity. Based on the stability-aromaticity relationship, as well as on the progress made in the synthesis of derivatized clusters, we have opened up new applications of boron icosahedral clusters as key components in the field of novel healthcare materials. In this brief review, we present the results obtained at the Laboratory of Inorganic Materials and Catalysis (LMI) of the Institut de Ciència de Materials de Barcelona (ICMAB-CSIC) with icosahedral boron clusters. These 3D geometric shape clusters, the semi-metallic nature of boron and the presence of exo-cluster hydrogen atoms that can interact with biomolecules through non-covalent hydrogen and dihydrogen bonds, play a key role in endowing these compounds with unique properties in largely unexplored (bio)materials.
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Affiliation(s)
- Francesc Teixidor
- Institut de Ciència de Materials de Barcelona, ICMAB-CSIC, 08193 Bellaterra, Spain
| | - Rosario Núñez
- Institut de Ciència de Materials de Barcelona, ICMAB-CSIC, 08193 Bellaterra, Spain
| | - Clara Viñas
- Institut de Ciència de Materials de Barcelona, ICMAB-CSIC, 08193 Bellaterra, Spain
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19
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Niu H, Wu G, Wang X, Ding H, Hu Y. Synthesis of a vanillin-derived bisDOPO co-curing agent rendering epoxy thermosets simultaneously improved flame retardancy, mechanical strength and transparency. Polym Degrad Stab 2023. [DOI: 10.1016/j.polymdegradstab.2023.110333] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/13/2023]
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20
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Wang Z, Wu W, Zhang W, Xu X, Lin H, Wang W. One-spot synthesis of a benzene-rich triazine-based hyperbranched charring agent and its efficient intumescent flame retardant performance for thermoplastic polyester elastomer. ARAB J CHEM 2023. [DOI: 10.1016/j.arabjc.2023.104861] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/31/2023] Open
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21
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Zhu W, Yang M, Wang Q, Zhang X, Li D, Xu Z, Liu S, Dai Z. An amino trimethylene phosphonic acid‐based chelated boric acid complex that works as a synergistic flame retardant for enhancing the flame retardancy of cotton fabrics. J CHIN CHEM SOC-TAIP 2023. [DOI: 10.1002/jccs.202200525] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/20/2023]
Affiliation(s)
- Wenju Zhu
- State Key Laboratory of Separation Membranes and Membrane Processes, Tianjin Key Laboratory of Green Chemical Technology and Process Engineering, School of Chemistry and Chemical Engineering Tiangong University Tianjin PR China
| | - Mingyang Yang
- State Key Laboratory of Separation Membranes and Membrane Processes, Tianjin Key Laboratory of Green Chemical Technology and Process Engineering, School of Chemistry and Chemical Engineering Tiangong University Tianjin PR China
| | - Qing Wang
- State Key Laboratory of Separation Membranes and Membrane Processes, Tianjin Key Laboratory of Green Chemical Technology and Process Engineering, School of Chemistry and Chemical Engineering Tiangong University Tianjin PR China
| | - Xiaohan Zhang
- State Key Laboratory of Separation Membranes and Membrane Processes, Tianjin Key Laboratory of Green Chemical Technology and Process Engineering, School of Chemistry and Chemical Engineering Tiangong University Tianjin PR China
| | - Dongxiang Li
- State Key Laboratory of Separation Membranes and Membrane Processes, Tianjin Key Laboratory of Green Chemical Technology and Process Engineering, School of Chemistry and Chemical Engineering Tiangong University Tianjin PR China
| | - Zelong Xu
- State Key Laboratory of Separation Membranes and Membrane Processes, Tianjin Key Laboratory of Green Chemical Technology and Process Engineering, School of Chemistry and Chemical Engineering Tiangong University Tianjin PR China
| | - Shuixia Liu
- State Key Laboratory of Separation Membranes and Membrane Processes, Tianjin Key Laboratory of Green Chemical Technology and Process Engineering, School of Chemistry and Chemical Engineering Tiangong University Tianjin PR China
| | - Zhao Dai
- State Key Laboratory of Separation Membranes and Membrane Processes, Tianjin Key Laboratory of Green Chemical Technology and Process Engineering, School of Chemistry and Chemical Engineering Tiangong University Tianjin PR China
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22
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Liu B, Zhang X, Yuan D, Wang Z, Xie H. Study on flame retardancy and thermal stability of rigid polyurethane foams modified by amino trimethylphosphonate cobalt and expandable graphite. INT POLYM PROC 2023. [DOI: 10.1515/ipp-2022-4250] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/15/2023]
Abstract
Abstract
Amino trimethylphosphonate cobalt (Co2+-ATMP) flame retardant was prepared by ion exchange method, and rigid polyurethane foam (RPUF) modified by Co2+-ATMP and expandable graphite (EG) was prepared by one-pot and free-rise method. The flame retardancy, thermal stability and smoke toxicity of modified RPUF were studied by limiting oxygen index (LOI), cone calorimeter (Cone), thermogravimetric analysis (TG) and smoke toxicity characterization. The results showed that the flame retardancy, thermal stability and smoke toxicity of RPUF modified by Co2+-ATMP and EG are significantly improved. When the ratio of Co2+-ATMP to EG is 1:5, the LOI value is the highest, and the toxicity of flue gas was the lowest. The peak heat release rate (PHRR) and total heat release rate (THR) were both the lowest, 138 kW/m2 and 15.9 MJ/m2, respectively. Compared with RPUF-0, it decreased by 39.2% and 16.8% respectively. The research results can provide reference for the subsequent flame retardant modification of RPUF.
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Affiliation(s)
- Bing Liu
- Liaoning Key Laboratory of Aircraft Fire Explosion Control and Reliability Airworthiness Technology , Shenyang Aerospace University , Shenyang 110136 , China
- School of Safety Engineering , Shenyang Aerospace University , Shenyang 110136 , China
| | - Xu Zhang
- Liaoning Key Laboratory of Aircraft Fire Explosion Control and Reliability Airworthiness Technology , Shenyang Aerospace University , Shenyang 110136 , China
- School of Safety Engineering , Shenyang Aerospace University , Shenyang 110136 , China
| | - Dehe Yuan
- Liaoning Key Laboratory of Aircraft Fire Explosion Control and Reliability Airworthiness Technology , Shenyang Aerospace University , Shenyang 110136 , China
- School of Safety Engineering , Shenyang Aerospace University , Shenyang 110136 , China
| | - Zhi Wang
- Liaoning Key Laboratory of Aircraft Fire Explosion Control and Reliability Airworthiness Technology , Shenyang Aerospace University , Shenyang 110136 , China
- School of Safety Engineering , Shenyang Aerospace University , Shenyang 110136 , China
| | - Hua Xie
- Liaoning Key Laboratory of Aircraft Fire Explosion Control and Reliability Airworthiness Technology , Shenyang Aerospace University , Shenyang 110136 , China
- School of Safety Engineering , Shenyang Aerospace University , Shenyang 110136 , China
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23
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Liang Y, Jian H, Deng C, Xu J, Liu Y, Park H, Wen M, Sun Y. Research and Application of Biomass-Based Wood Flame Retardants: A Review. Polymers (Basel) 2023; 15:polym15040950. [PMID: 36850233 PMCID: PMC9966695 DOI: 10.3390/polym15040950] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2022] [Revised: 01/29/2023] [Accepted: 02/06/2023] [Indexed: 02/17/2023] Open
Abstract
Wood is widely used as a construction material due to its many advantages, such as good mechanical properties, low production costs, and renewability. However, its flammability limits its use in construction. To solve the problem of wood flammability, the most common method to improve the fire safety of wood is to modify the wood by deep impregnation or surface coating with flame retardants. Therefore, many researchers have found that environmentally friendly and low-cost biomass materials can be used as a source of green flame retardants. Two aspects of biomass-based intumescent flame retardants are summarized in this paper. On the one hand, biomass is used as one of the three sources or as a flame-retardant synergist in combination with other flame retardants, which are called composite biomass intumescent flame retardants. On the other hand, biomass is used alone as a feedstock to produce all-biomass intumescent flame retardants. In addition, the potential of biomass-based materials as an environmentally friendly and low-cost FR source to produce high-performance biomass-based flame retardants with improved technology was also discussed in detail. The development of biomass-based intumescent flame retardants represents a viable and promising approach for the efficient and environmentally friendly production of biomass-based flame retardants.
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Affiliation(s)
- Yuqing Liang
- Department of Wood Material Science and Engineering Key Laboratory, College of Materials Science and Engineering, Beihua University, Jilin 132013, China
| | - Hao Jian
- Department of Wood Material Science and Engineering Key Laboratory, College of Materials Science and Engineering, Beihua University, Jilin 132013, China
| | - Chao Deng
- Department of Wood Material Science and Engineering Key Laboratory, College of Materials Science and Engineering, Beihua University, Jilin 132013, China
| | - Junxian Xu
- Department of Wood Material Science and Engineering Key Laboratory, College of Materials Science and Engineering, Beihua University, Jilin 132013, China
| | - Yang Liu
- Department of Wood Material Science and Engineering Key Laboratory, College of Materials Science and Engineering, Beihua University, Jilin 132013, China
| | - Heejun Park
- Department of Housing Environmental Design, and Research Institute of Human Ecology, College of Human Ecology, Jeonbuk National University, Jeonju 54896, Republic of Korea
| | - Mingyu Wen
- Department of Wood Material Science and Engineering Key Laboratory, College of Materials Science and Engineering, Beihua University, Jilin 132013, China
- Correspondence: (M.W.); (Y.S.)
| | - Yaoxing Sun
- Department of Wood Material Science and Engineering Key Laboratory, College of Materials Science and Engineering, Beihua University, Jilin 132013, China
- Correspondence: (M.W.); (Y.S.)
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24
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Wang C, Eisenreich F, Tomović Ž. Closed-Loop Recyclable High-Performance Polyimine Aerogels Derived from Bio-Based Resources. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2023; 35:e2209003. [PMID: 36495005 DOI: 10.1002/adma.202209003] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/29/2022] [Revised: 12/05/2022] [Indexed: 06/17/2023]
Abstract
Organic aerogels are an intriguing class of highly porous and ultralight materials which have found widespread applications in thermal insulation, energy storage, and chemical absorption. These fully cross-linked polymeric networks, however, pose environmental concerns as they are typically made from fossil-based feedstock and the recycling back to their original monomers is virtually impossible. In addition, organic aerogels suffer from low thermal stability and potential fire hazard. To overcome these obstacles and create next-generation organic aerogels, a set of polyimine aerogels containing reversible chemical bonds which can selectively be cleaved on demand is prepared. As precursors, different primary amines and cyclophosphazene derivatives made from bio-based reagents (vanillin and 4-hydroxybenzaldehyde) to elevate the thermal stability and reduce the environmental impact are used. The resulting polyimine aerogels exhibit low shrinkage, high porosity, large surface area, as well as pronounced thermal stability and flame resistance. More importantly, the aerogels show excellent recyclability under acidic conditions with high monomer recovery yields and purities. This approach allows for preparation of fresh aerogels from the retrieved building blocks, thus demonstrating efficient closed-loop recycling. These high-performance, recyclable, and bio-based polyimine aerogels pave the way for advanced and sustainable superinsulating materials.
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Affiliation(s)
- Changlin Wang
- Polymer Performance Materials Group, Department of Chemical Engineering and Chemistry, Eindhoven University of Technology, Eindhoven, MB, 5600, The Netherlands
| | - Fabian Eisenreich
- Polymer Performance Materials Group, Department of Chemical Engineering and Chemistry, Eindhoven University of Technology, Eindhoven, MB, 5600, The Netherlands
| | - Željko Tomović
- Polymer Performance Materials Group, Department of Chemical Engineering and Chemistry, Eindhoven University of Technology, Eindhoven, MB, 5600, The Netherlands
- Institute for Complex Molecular Systems (ICMS), Eindhoven University of Technology, Eindhoven, MB, 5600, The Netherlands
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25
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Su Q, Wang H, Wang Y, Liang S, Pang S, Zhao X, Sun X, Shi X, Zhao J. Flame-Retardant Foamed Material Based on Modified Corn Straw Using Two Nitrogenous Layers. MATERIALS (BASEL, SWITZERLAND) 2023; 16:952. [PMID: 36769957 PMCID: PMC9918293 DOI: 10.3390/ma16030952] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/08/2022] [Revised: 12/29/2022] [Accepted: 01/16/2023] [Indexed: 06/18/2023]
Abstract
Foamed materials based on a biopolymer of crop straws are environmentally friendly, but ignitability limits their application. In this study, two nitrogenous layers were introduced onto corn straw by esterification and grafting for flame-retardant purposes. The inner thin nitrogenous layer consisted of imidazole rings, and the outer thick nitrogenous layer consisted of grafted acrylamide by a free-radical polymerization. The outer nitrogenous layer was simultaneously introduced into the system with a foaming process at 150 °C. Azodiisobutyronitrile acted both as initiator of the polymerization and the main foaming agent, and deionized water acted both as a plasticizing agent and an auxiliary foaming agent, which simplified the process and formula. It was found that cavities of two different sizes were formed. The nonuniformity of the foamed material was ascribed to the heterogeneous foaming precursor consisting of a rigid core and a soft shell. Its excellent flame-retard rating of UL-94 V-0 was ascribed to the two nitrogenous layers, which provides a sufficient nitrogen source for non-combustible gases. A relatively high compression strength of 17.7 MPa was partly due to the fiber of corn straw.
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Affiliation(s)
- Qiong Su
- School of Chemical Engineering, Northwest Minzu University, Lanzhou 730030, China
- Key Laboratory of Environment-Friendly Composite Materials of the State Ethnic Affairs Commission, Lanzhou 730030, China
- Engineering Research Center of Biomass-Functional Composite Materials of Gansu Province, Lanzhou 730030, China
- Key Laboratory of Utility of Environmental Friendly Composite Materials and Biomass in Universities of Gansu Province, Lanzhou 730030, China
| | - Hongling Wang
- School of Chemical Engineering, Northwest Minzu University, Lanzhou 730030, China
- Key Laboratory of Environment-Friendly Composite Materials of the State Ethnic Affairs Commission, Lanzhou 730030, China
- Engineering Research Center of Biomass-Functional Composite Materials of Gansu Province, Lanzhou 730030, China
- Key Laboratory of Utility of Environmental Friendly Composite Materials and Biomass in Universities of Gansu Province, Lanzhou 730030, China
| | - Yanbin Wang
- School of Chemical Engineering, Northwest Minzu University, Lanzhou 730030, China
- Key Laboratory of Environment-Friendly Composite Materials of the State Ethnic Affairs Commission, Lanzhou 730030, China
- Engineering Research Center of Biomass-Functional Composite Materials of Gansu Province, Lanzhou 730030, China
- Key Laboratory of Utility of Environmental Friendly Composite Materials and Biomass in Universities of Gansu Province, Lanzhou 730030, China
| | - Shuang Liang
- School of Chemical Engineering, Northwest Minzu University, Lanzhou 730030, China
- Key Laboratory of Environment-Friendly Composite Materials of the State Ethnic Affairs Commission, Lanzhou 730030, China
- Engineering Research Center of Biomass-Functional Composite Materials of Gansu Province, Lanzhou 730030, China
- Key Laboratory of Utility of Environmental Friendly Composite Materials and Biomass in Universities of Gansu Province, Lanzhou 730030, China
| | - Shaofeng Pang
- School of Chemical Engineering, Northwest Minzu University, Lanzhou 730030, China
- Key Laboratory of Environment-Friendly Composite Materials of the State Ethnic Affairs Commission, Lanzhou 730030, China
- Engineering Research Center of Biomass-Functional Composite Materials of Gansu Province, Lanzhou 730030, China
- Key Laboratory of Utility of Environmental Friendly Composite Materials and Biomass in Universities of Gansu Province, Lanzhou 730030, China
| | - Xiangfei Zhao
- School of Chemical Engineering, Northwest Minzu University, Lanzhou 730030, China
- Key Laboratory of Environment-Friendly Composite Materials of the State Ethnic Affairs Commission, Lanzhou 730030, China
- Engineering Research Center of Biomass-Functional Composite Materials of Gansu Province, Lanzhou 730030, China
- Key Laboratory of Utility of Environmental Friendly Composite Materials and Biomass in Universities of Gansu Province, Lanzhou 730030, China
| | - Xiyang Sun
- School of Chemical Engineering, Northwest Minzu University, Lanzhou 730030, China
- Key Laboratory of Environment-Friendly Composite Materials of the State Ethnic Affairs Commission, Lanzhou 730030, China
- Engineering Research Center of Biomass-Functional Composite Materials of Gansu Province, Lanzhou 730030, China
- Key Laboratory of Utility of Environmental Friendly Composite Materials and Biomass in Universities of Gansu Province, Lanzhou 730030, China
| | - Xiaoqin Shi
- School of Chemical Engineering, Northwest Minzu University, Lanzhou 730030, China
- Key Laboratory of Environment-Friendly Composite Materials of the State Ethnic Affairs Commission, Lanzhou 730030, China
- Engineering Research Center of Biomass-Functional Composite Materials of Gansu Province, Lanzhou 730030, China
- Key Laboratory of Utility of Environmental Friendly Composite Materials and Biomass in Universities of Gansu Province, Lanzhou 730030, China
| | - Jun Zhao
- School of Chemical Engineering, Northwest Minzu University, Lanzhou 730030, China
- Key Laboratory of Environment-Friendly Composite Materials of the State Ethnic Affairs Commission, Lanzhou 730030, China
- Engineering Research Center of Biomass-Functional Composite Materials of Gansu Province, Lanzhou 730030, China
- Key Laboratory of Utility of Environmental Friendly Composite Materials and Biomass in Universities of Gansu Province, Lanzhou 730030, China
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26
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Design, Synthesis and Actual Applications of the Polymers Containing Acidic P-OH Fragments: Part 2-Sidechain Phosphorus-Containing Polyacids. Int J Mol Sci 2023; 24:ijms24021613. [PMID: 36675149 PMCID: PMC9862152 DOI: 10.3390/ijms24021613] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2022] [Accepted: 01/11/2023] [Indexed: 01/18/2023] Open
Abstract
Macromolecules containing acidic fragments in side-groups—polyacids—occupy a special place among synthetic polymers. Properties and applications of polyacids are directly related to the chemical structure of macromolecules: the nature of the acidic groups, polymer backbone, and spacers between the main chain and acidic groups. The chemical nature of the phosphorus results in the diversity of acidic >P(O)OH fragments in sidechain phosphorus-containing polyacids (PCPAs) that can be derivatives of phosphoric or phosphinic acids. Sidechain PCPAs have many similarities with other polyacids. However, due to the relatively high acidity of −P(O)(OH)2 fragment, bone and mineral affinity, and biocompatibility, sidechain PCPAs have immense potential for diverse applications. Synthetic approaches to sidechain PCPAs also have their own specifics. All these issues are discussed in the present review.
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27
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Khan L, Kim JS, Huh SH, Koo BH. N-Containing Hybrid Composites Coatings for Enhanced Fire-Retardant Properties of Cotton Fabric Using One-Pot Sol-Gel Process. Polymers (Basel) 2023; 15:polym15020258. [PMID: 36679139 PMCID: PMC9862767 DOI: 10.3390/polym15020258] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2022] [Revised: 12/23/2022] [Accepted: 12/28/2022] [Indexed: 01/06/2023] Open
Abstract
In this report, a unique methodology/process steps were followed using Sol-gel-based concept to deposit thin flame-retardant coatings on cotton fabric. Surface microstructure and compositional analysis of the coated cotton were carried out using scanning electronic microscope (SEM), which explored significant coverage of the fabric. The obtained samples were further analyzed through rupturing mechanism test and color check. Compositional investigation of the coated samples was carried through Attenuated total reflection Fourier transform infrared (ATR-FTIR) and energy-dispersive X-rays spectroscopy (EDS) analysis. Thermal analyses were carried out through Thermogravimetric analysis (TGA) and Vertical flame tests (VFT), which suggested higher resistance of the coatings obtained for 5 h and zero heat-treatment time on the cotton fabric. A 28.86% char residue was obtained for the same sample (ET-5h-RT) coupled with higher degradation temperature and excellent combustion properties.
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Affiliation(s)
- Laila Khan
- Department of Materials Convergence and System Engineering, Changwon National University, Changwon 51140, Gyeongsangnam-do, Republic of Korea
| | - Jong Seop Kim
- Department of Material Science and Engineering, Changwon National University, Changwon 51140, Gyeongsangnam-do, Republic of Korea
| | - Seok-Hwan Huh
- Department of Mechatronics Convergence Engineering, Changwon National University, Changwon 51140, Gyeongsangnam-do, Republic of Korea
| | - Bon Heun Koo
- Department of Material Science and Engineering, Changwon National University, Changwon 51140, Gyeongsangnam-do, Republic of Korea
- Correspondence:
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28
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Shi S, Jiang Y, Ji Q, Xing Y, Ma X, Xia Y. Multi‐crosslinked
, ecofriendly
flame‐retardant starch‐based
composite aerogels with high
compression‐resistance. POLYM ENG SCI 2023. [DOI: 10.1002/pen.26194] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Affiliation(s)
- Shaokun Shi
- College of Chemistry and Chemical Engineering Qingdao University Qingdao PR China
| | - Yingying Jiang
- College of Chemistry and Chemical Engineering Qingdao University Qingdao PR China
| | - Quan Ji
- State Key Laboratory of Bio‐Fibers and Eco‐Textiles, Collaborative Innovation Center of Marine Biobased Fiber and Ecological textile Technology Institute of Marine Biobased Materials, Qingdao University Qingdao PR China
| | - Yacheng Xing
- College of Chemistry and Chemical Engineering Qingdao University Qingdao PR China
| | - Xiaomei Ma
- College of Chemistry and Chemical Engineering Qingdao University Qingdao PR China
- State Key Laboratory of Bio‐Fibers and Eco‐Textiles, Collaborative Innovation Center of Marine Biobased Fiber and Ecological textile Technology Institute of Marine Biobased Materials, Qingdao University Qingdao PR China
| | - Yanzhi Xia
- State Key Laboratory of Bio‐Fibers and Eco‐Textiles, Collaborative Innovation Center of Marine Biobased Fiber and Ecological textile Technology Institute of Marine Biobased Materials, Qingdao University Qingdao PR China
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29
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Jiang L, Zhou Z, Zhao F, Li S, Liu Z, Liu X, Xu M, Xin Z, Zhao S, Li L. Flame retardancy, smoke suppression and enhancement properties of Enteromorpha based flame retardants on
EPDM. J Appl Polym Sci 2022. [DOI: 10.1002/app.53567] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Licong Jiang
- Key Lab of Rubber‐Plastics, Ministry of Education/Shandong Provincial Key Lab of Rubber‐Plastics, School of Polymer Science and Engineering Qingdao University of Science and Technology Qingdao China
| | - Ziwen Zhou
- Key Lab of Rubber‐Plastics, Ministry of Education/Shandong Provincial Key Lab of Rubber‐Plastics, School of Polymer Science and Engineering Qingdao University of Science and Technology Qingdao China
| | - Feng Zhao
- Key Lab of Rubber‐Plastics, Ministry of Education/Shandong Provincial Key Lab of Rubber‐Plastics, School of Polymer Science and Engineering Qingdao University of Science and Technology Qingdao China
| | - Song Li
- Key Lab of Rubber‐Plastics, Ministry of Education/Shandong Provincial Key Lab of Rubber‐Plastics, School of Polymer Science and Engineering Qingdao University of Science and Technology Qingdao China
| | - Zhihua Liu
- Key Lab of Rubber‐Plastics, Ministry of Education/Shandong Provincial Key Lab of Rubber‐Plastics, School of Polymer Science and Engineering Qingdao University of Science and Technology Qingdao China
| | - Xiaoyang Liu
- Integrated Product Department Shandong Rike Chemical Co., Ltd Changle China
| | - Meiming Xu
- Integrated Product Department Shandong Rike Chemical Co., Ltd Changle China
| | - Zhenxiang Xin
- Key Lab of Rubber‐Plastics, Ministry of Education/Shandong Provincial Key Lab of Rubber‐Plastics, School of Polymer Science and Engineering Qingdao University of Science and Technology Qingdao China
| | - Shuai Zhao
- Key Lab of Rubber‐Plastics, Ministry of Education/Shandong Provincial Key Lab of Rubber‐Plastics, School of Polymer Science and Engineering Qingdao University of Science and Technology Qingdao China
| | - Lin Li
- Key Lab of Rubber‐Plastics, Ministry of Education/Shandong Provincial Key Lab of Rubber‐Plastics, School of Polymer Science and Engineering Qingdao University of Science and Technology Qingdao China
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30
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The Study of Enteromorpha-Based Reinforcing-Type Flame Retardant on Flame Retardancy and Smoke Suppression of EPDM. Polymers (Basel) 2022; 15:polym15010055. [PMID: 36616405 PMCID: PMC9823468 DOI: 10.3390/polym15010055] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2022] [Revised: 12/03/2022] [Accepted: 12/06/2022] [Indexed: 12/25/2022] Open
Abstract
Enteromorpha, as a waste from marine pollution, brings great pressure to environmental governance every year, especially for China. Under the premise of a shortage of industrial materials, taking appropriate measures can turn waste into wealth, which will benefit us a lot. In this work, a bio-based reinforcing-type flame retardant based on Enteromorpha is designed. The designed Enteromorpha-based flame retardant system (AEG) mainly focuses on the reinforcing and flame retardant effects on ethylene-propylene-diene tripolymer (EPDM). For the AEG system, ammonium polyphosphate (APP) serves as both the acid source and the gas source; the simple hybrid material (GN) produced by loading graphene (GE) and Enteromorpha (EN) using tannic acid (TA) as a regulator serves as an acid source and a carbonizing source. The results show that when 40 phr AEG is added, the LOI of EPDM/AEG40 reaches 32.5% and the UL-94 reaches the V-0 level. The PHRR and THR values of EPDM/AEG40 are 325.9 kW/m2 and 117.6 MJ/m2, respectively, with decrements of 67.3% and 29.7%, respectively, compared with the results of neat EPDM composite. Especially, the TSP and TSR values of EPDM/AEG40 are reduced from 15.2 m2 of neat EPDM to 9.9 m2 with a decrement of 34.9% and reduced from 1715.2 m2/m2 of neat EPDM to 1124.5 m2/m2 with a decrement of 34.4%, indicating that AEG is effective in flame retardancy and smoke suppression. Meanwhile, the tensile strength and tear strength of EPDM/AEG composites are much higher than neat EPDM, therefore, with the future development of innovate reinforcing-type flame-retardant Enteromorpha, the application of Enteromorpha in the polymer flame-retardant field will surely usher in bright development.
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31
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Serbezeanu D, Hamciuc C, Vlad-Bubulac T, Onofrei MD, Bargan A, Rusu D, Suflet DM, Lisa G. Electrospun Nanofibers Based on Polymer Blends with Tunable High-Performance Properties for Innovative Fire-Resistant Materials. Polymers (Basel) 2022; 14:polym14245501. [PMID: 36559867 PMCID: PMC9785993 DOI: 10.3390/polym14245501] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2022] [Revised: 12/10/2022] [Accepted: 12/13/2022] [Indexed: 12/23/2022] Open
Abstract
The main concern of materials designed for firefighting protective clothing applications is heat protection, which can be experienced from any uncomfortably hot objects or inner spaces, as well as direct contact with flame. While textile fibers are one of the most important components of clothing, there is a constant need for the development of innovative fire-retardant textile fibers with improved thermal characteristics. Lately, inherently fire-resistant fibers have become very popular to provide better protection for firefighters. In the current study, the electrospinning technique was applied as a versatile method to produce micro-/nano-scaled non-woven fibrous membranes based on various ratios of a poly(ether-ether-ketone) (PEEK) and a phosphorus-containing polyimide. Rheological measurements have been performed on solutions of certain ratios of these components in order to optimize the electrospinning process. FTIR spectroscopy and scanning electron microscopy were used to investigate the chemical structure and morphology of electrospun nanofiber membranes, while thermogravimetric analysis, heat transfer measurements and differential scanning calorimetry were used to determine their thermal properties. The water vapor sorption behavior and mechanical properties of the optimized electrospun nanofiber membranes were also evaluated.
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Affiliation(s)
- Diana Serbezeanu
- “Petru Poni” Institute of Macromolecular Chemistry, Aleea Gr. Ghica Voda, 41A, 700487 Iasi, Romania
- Correspondence: (D.S.); (C.H.)
| | - Corneliu Hamciuc
- “Petru Poni” Institute of Macromolecular Chemistry, Aleea Gr. Ghica Voda, 41A, 700487 Iasi, Romania
- Correspondence: (D.S.); (C.H.)
| | - Tăchiță Vlad-Bubulac
- “Petru Poni” Institute of Macromolecular Chemistry, Aleea Gr. Ghica Voda, 41A, 700487 Iasi, Romania
| | - Mihaela-Dorina Onofrei
- “Petru Poni” Institute of Macromolecular Chemistry, Aleea Gr. Ghica Voda, 41A, 700487 Iasi, Romania
| | - Alexandra Bargan
- “Petru Poni” Institute of Macromolecular Chemistry, Aleea Gr. Ghica Voda, 41A, 700487 Iasi, Romania
| | - Daniela Rusu
- “Petru Poni” Institute of Macromolecular Chemistry, Aleea Gr. Ghica Voda, 41A, 700487 Iasi, Romania
| | - Dana Mihaela Suflet
- “Petru Poni” Institute of Macromolecular Chemistry, Aleea Gr. Ghica Voda, 41A, 700487 Iasi, Romania
| | - Gabriela Lisa
- Department of Chemical Engineering, Faculty of Chemical Engineering and Environmental Protection, Gheorghe Asachi Technical University of Iasi, Bd. Mangeron 73, 700050 Iasi, Romania
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32
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Muhammed Raji A, Hambali HU, Khan ZI, Binti Mohamad Z, Azman H, Ogabi R. Emerging trends in flame retardancy of rigid polyurethane foam and its composites: A review. J CELL PLAST 2022. [DOI: 10.1177/0021955x221144564] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/03/2022]
Abstract
Owing to the superior thermal insulating attributes of rigid polyurethane foam (RPUF) compared to other insulating materials (expanded and extruded polystyrene, mineral wool), it remains the most dominant insulating material and most studied polymer foam. Like other polyurethane foam, RPUF is highly flammable, necessitating the incorporation of flame retardants (FR) during production to lower combustibility, promoting its continuous use as insulation material in construction, transportation, and others. The popular approaches for correcting the high flammability of RPUF are copolymerization and blending (with FR). The second method has proven to be most effective as there are limited trade-offs in RPUF properties. Meanwhile, the high flammability of RPUF is still a significant hindrance in emerging applications (sensors, space travel, and others), and this has continuously inspired research in the flame retardancy of RPUF. In this study, properties, and preparation methods of RPUF are described, factors responsible for the high flammability of PUF are discussed, and flame retardancy of RPUF is thoroughly reviewed. Notably, most FR for RPUF are inorganic nanoparticles, lignin, intumescent FR systems of expandable graphite (EG), ammonium polyphosphate (APP), and hybridized APP or EG with other FR. These could be due to their ease of processing, low cost, and being environmentally benign. Elaborate discussion on RPUF FR mechanisms were also highlighted. Lastly, a summary and future perspectives in fireproofing RPUF are provided, which could inspire the design of new FR for RPUF.
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Affiliation(s)
- Abdulwasiu Muhammed Raji
- Enhanced Polymer Research Group, School of Chemical and Energy Engineering, Faculty of Engineering, Universiti Teknologi Malaysia, Johor Bahru, Malaysia
- Department of Bioprocess and Polymer Engineering, School of Chemical and Energy Engineering, Universiti Teknologi Malaysia, Skudai, Malaysia
- Department of Polymer and Textile Technology, Yaba College of Technology, Lagos, Nigeria
| | - Hambali Umar Hambali
- Department of Chemical Engineering, Faculty of Engineering and Technology, University of Ilorin, Ilorin, Nigeria
| | - Zahid Iqbal Khan
- Enhanced Polymer Research Group, School of Chemical and Energy Engineering, Faculty of Engineering, Universiti Teknologi Malaysia, Johor Bahru, Malaysia
| | - Zurina Binti Mohamad
- Enhanced Polymer Research Group, School of Chemical and Energy Engineering, Faculty of Engineering, Universiti Teknologi Malaysia, Johor Bahru, Malaysia
- Department of Bioprocess and Polymer Engineering, School of Chemical and Energy Engineering, Universiti Teknologi Malaysia, Skudai, Malaysia
| | - Hassan Azman
- Enhanced Polymer Research Group, School of Chemical and Energy Engineering, Faculty of Engineering, Universiti Teknologi Malaysia, Johor Bahru, Malaysia
- Department of Bioprocess and Polymer Engineering, School of Chemical and Energy Engineering, Universiti Teknologi Malaysia, Skudai, Malaysia
| | - Raphael Ogabi
- INSA Center Val de Loire, University Orleans, Bourges, France
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33
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Wang Y, Yuan J, Ma L, Yin X, Zhu Z, Song P. Fabrication of anti-dripping and flame-retardant polylactide modified with chitosan derivative/aluminum hypophosphite. Carbohydr Polym 2022; 298:120141. [DOI: 10.1016/j.carbpol.2022.120141] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2022] [Revised: 09/09/2022] [Accepted: 09/19/2022] [Indexed: 11/27/2022]
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34
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Design, Synthesis and Actual Applications of the Polymers Containing Acidic P-OH Fragments: Part 1. Polyphosphodiesters. Int J Mol Sci 2022; 23:ijms232314857. [PMID: 36499185 PMCID: PMC9738169 DOI: 10.3390/ijms232314857] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2022] [Revised: 11/20/2022] [Accepted: 11/23/2022] [Indexed: 12/03/2022] Open
Abstract
Among natural and synthetic polymers, main-chain phosphorus-containing polyacids (PCPAs) (polyphosphodiesters), stand in a unique position at the intersection of chemistry, physics, biology and medicine. The structural similarity of polyphosphodiesters PCPAs to natural nucleic and teichoic acids, their biocompatibility, mimicking to biomolecules providing the 'stealth effect', high bone mineral affinity of polyphosphodiesters resulting in biomineralization at physiological conditions, and adjustable hydrolytic stability of polyphosphodiesters are the basis for various biomedical, industrial and household applications of this type of polymers. In the present review, we discuss the synthesis, properties and actual applications of polyphosphodiesters.
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35
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Albayrak Hacioglu O, Tasdelen MA. Synergistic effect of organically modified sepiolite clay in intumescent flame retardant polyolefin elastomer-based cable outer sheath compounds. IRANIAN POLYMER JOURNAL 2022. [DOI: 10.1007/s13726-022-01114-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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36
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Huang R, Gao C, Shi Y, Fu L, Feng Y, Shui W. Synergistic Function between Phosphorus-Containing Flame Retardant and Multi-Walled Carbon Nanotubes towards Fire Safe Polystyrene Composites with Enhanced Electromagnetic Interference Shielding. Int J Mol Sci 2022; 23:13434. [PMID: 36362219 PMCID: PMC9655451 DOI: 10.3390/ijms232113434] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2022] [Revised: 10/27/2022] [Accepted: 10/30/2022] [Indexed: 09/24/2023] Open
Abstract
As a universal polymer material, polystyrene (PS) is widely applied in electrical devices and construction. Thus, it is necessary to improve the flame retardancy and electromagnetic shielding properties of PS material. In this work, PS/silicon-wrapped ammonium polyphosphate/Inorganic acid-treated multi-walled carbon nanotubes composites (PS/SiAPP/aMWCNT, abbreviated as PAC) were prepared via methods of filtration-induced assembly and hot-pressing. Morphology and structure characterization demonstrated that SiAPP and aMWCNT had good dispersion in PS and excellent compatibility with the PS matrix. Thermogravimetric analysis revealed that the addition of aMWCNT to PS improved its thermal stability and carbon-forming characteristics. The peak heat release rate, the peak carbon monoxide production rate, and the peak smoke production rate of the PAC10 composite decreased by 53.7%, 41.9%, and 45.5%, respectively, while its electromagnetic shielding effectiveness reached 12 dB. These enhancements were attributed to the reason that SiAPP and aMWCNT synergistically catalyzed the char generation and SiAPP produced free radical scavengers and numbers of incombustible gases, which could decrease the oxygen concentration and retard the combustion reaction. Therefore, the assembled PS/SiAPP/aMWCNT system provides a new pathway to improve the flame retardant and electromagnetic shielding properties of PS.
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Affiliation(s)
- Ruizhe Huang
- College of Environment and Safety Engineering, Fuzhou University, 2 Xueyuan Road, Fuzhou 350116, China
| | - Caiqin Gao
- College of Environment and Safety Engineering, Fuzhou University, 2 Xueyuan Road, Fuzhou 350116, China
| | - Yongqian Shi
- College of Environment and Safety Engineering, Fuzhou University, 2 Xueyuan Road, Fuzhou 350116, China
| | - Libi Fu
- College of Civil Engineering, Fuzhou University, 2 Xueyuan Road, Fuzhou 350116, China
| | - Yuezhan Feng
- Key Laboratory of Materials Processing and Mold Ministry of Education, National Engineering Research Center for Advanced Polymer Processing Technology, Zhengzhou University, Zhengzhou 450002, China
| | - Wei Shui
- College of Environment and Safety Engineering, Fuzhou University, 2 Xueyuan Road, Fuzhou 350116, China
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37
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Liu BW, Zhao HB, Wang YZ. Advanced Flame-Retardant Methods for Polymeric Materials. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2022; 34:e2107905. [PMID: 34837231 DOI: 10.1002/adma.202107905] [Citation(s) in RCA: 74] [Impact Index Per Article: 37.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/03/2021] [Revised: 11/18/2021] [Indexed: 06/13/2023]
Abstract
Most organic polymeric materials have high flammability, for which the large amounts of smoke, toxic gases, heat, and melt drips produced during their burning cause immeasurable damages to human life and property every year. Despite some desirable results having been achieved by conventional flame-retardant methods, their application is encountering more and more difficulties with the ever-increasing high flame-retardant requirements such as high flame-retardant efficiency, great persistence, low release of heat, smoke, and toxic gases, and more importantly not deteriorating or even enhancing the overall properties of polymers. Under such condition, some advanced flame-retardant methods have been developed in the past years based on "all-in-one" intumescence, nanotechnology, in situ reinforcement, intrinsic char formation, plasma treatment, biomimetic coatings, etc., which have provided potential solutions to the dilemma of conventional flame-retardant methods. This review briefly outlines the development, application, and problems of conventional flame-retardant methods, including bulk-additive, bulk-copolymerization, and surface treatment, and focuses on the raise, development, and potential application of advanced flame-retardant methods. The future development of flame-retardant methods is further discussed.
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Affiliation(s)
- Bo-Wen Liu
- The Collaborative Innovation Center for Eco-Friendly and Fire-Safety Polymeric Materials (MoE), National Engineering Laboratory of Eco-Friendly Polymeric Materials (Sichuan), State Key Laboratory of Polymer Materials Engineering, College of Chemistry, Sichuan University, Chengdu, 610064, China
| | - Hai-Bo Zhao
- The Collaborative Innovation Center for Eco-Friendly and Fire-Safety Polymeric Materials (MoE), National Engineering Laboratory of Eco-Friendly Polymeric Materials (Sichuan), State Key Laboratory of Polymer Materials Engineering, College of Chemistry, Sichuan University, Chengdu, 610064, China
| | - Yu-Zhong Wang
- The Collaborative Innovation Center for Eco-Friendly and Fire-Safety Polymeric Materials (MoE), National Engineering Laboratory of Eco-Friendly Polymeric Materials (Sichuan), State Key Laboratory of Polymer Materials Engineering, College of Chemistry, Sichuan University, Chengdu, 610064, China
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Li X, Vázquez-López A, Sánchez Del Río Sáez J, Wang DY. Recent Advances on Early-Stage Fire-Warning Systems: Mechanism, Performance, and Perspective. NANO-MICRO LETTERS 2022; 14:197. [PMID: 36201090 PMCID: PMC9537397 DOI: 10.1007/s40820-022-00938-x] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/17/2022] [Accepted: 08/25/2022] [Indexed: 05/17/2023]
Abstract
Early-stage fire-warning systems (EFWSs) have attracted significant attention owing to their superiority in detecting fire situations occurring in the pre-combustion process. Substantial progress on EFWSs has been achieved recently, and they have presented a considerable possibility for more evacuation time to control constant unintentional fire hazards in our daily life. This review mainly makes a comprehensive summary of the current EFWSs, including the working mechanisms and their performance. According to the different working mechanisms, fire alarms can be classified into graphene oxide-based fire alarms, semiconductor-based fire alarms, thermoelectric-based fire alarms, and fire alarms on other working mechanisms. Finally, the challenge and prospect for EFWSs are briefly provided by comparing the art of state of fire alarms. This work can propose a more comprehensive understanding of EFWSs and a guideline for the cutting-edge development direction of EFWSs for readers.
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Affiliation(s)
- Xiaolu Li
- IMDEA Materials Institute, C/Eric Kandel, 2, 28906, Getafe, Madrid, Spain
- E.T.S. de Ingenieros de Caminos, Universidad Politécnica de Madrid, Calle Profesor Aranguren 3, 28040, Madrid, Spain
| | | | - José Sánchez Del Río Sáez
- IMDEA Materials Institute, C/Eric Kandel, 2, 28906, Getafe, Madrid, Spain
- Departamento de Ingeniería Eléctrica, Electrónica Automática y Física Aplicada, ETSIDI, Universidad Politécnica de Madrid, Ronda de Valencia 3, 28012, Madrid, Spain
| | - De-Yi Wang
- IMDEA Materials Institute, C/Eric Kandel, 2, 28906, Getafe, Madrid, Spain.
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Effects of Phosphorus and Boron Compounds on Thermal Stability and Flame Retardancy Properties of Epoxy Composites. Polymers (Basel) 2022; 14:polym14194005. [PMID: 36235953 PMCID: PMC9573513 DOI: 10.3390/polym14194005] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2022] [Revised: 09/19/2022] [Accepted: 09/20/2022] [Indexed: 11/17/2022] Open
Abstract
While plastics are regarded as the most resourceful materials nowadays, ranging from countless utilities including protective or decorating coatings, to adhesives, packaging materials, electronic components, paintings, furniture, insulating composites, foams, building blocks and so on, their critical limitation is their advanced flammability, which in fire incidents can result in dramatic human fatalities and irreversible environmental damage. Herein, epoxy-based composites with improved flame-resistant characteristics have been prepared by incorporating two flame retardant additives into epoxy resin, namely 6-(hydroxy(phenyl)methyl)-6H-dibenzo[c,e][1,2]oxaphosphinine-6-oxide (PFR) and boric acid (H3BO3). The additional reaction of 9,10-dihydro-oxa-10-phosphophenanthrene-10-oxide (DOPO) to the carbonyl group of benzaldehyde yielded PFR, which was then used to prepare epoxy composites having a phosphorus content ranging from 1.5 to 4 wt%, while the boron content was 2 wt%. The structure, morphology, thermal stability and flammability of resulted epoxy composites were investigated by FTIR spectroscopy, scanning electron microscopy (SEM), thermogravimetric analysis, differential scanning calorimetry, and microscale combustion calorimetry (MCC). Thermogravimetric analysis indicated that the simultaneous incorporation of PFR and H3BO3 improved the thermal stability of the char residue at high temperatures. The surface morphology of the char residues, studied by SEM measurements, showed improved characteristics in the case of the samples containing both phosphorus and boron atoms. The MCC tests revealed a significant reduction in flammability as well as a significant decrease in heat release capacity for samples containing both PFR and H3BO3 compared to the neat epoxy thermoset.
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Song X, Xu D, Luo Z, Wang B. A silicone diphenylsulfonate for improving the flame retardancy of polycarbonate. J Appl Polym Sci 2022. [DOI: 10.1002/app.53152] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Xiaoqing Song
- Jiangsu Key Laboratory of Environmentally Friendly Polymeric Materials, School of Materials Science and Engineering, Jiangsu Collaborative Innovation Center of Photovoltaic Science and Engineering Changzhou University Changzhou People's Republic of China
| | - Dehuan Xu
- Jiangsu Key Laboratory of Environmentally Friendly Polymeric Materials, School of Materials Science and Engineering, Jiangsu Collaborative Innovation Center of Photovoltaic Science and Engineering Changzhou University Changzhou People's Republic of China
| | - Zhonglin Luo
- Jiangsu Key Laboratory of Environmentally Friendly Polymeric Materials, School of Materials Science and Engineering, Jiangsu Collaborative Innovation Center of Photovoltaic Science and Engineering Changzhou University Changzhou People's Republic of China
| | - Biaobing Wang
- Jiangsu Key Laboratory of Environmentally Friendly Polymeric Materials, School of Materials Science and Engineering, Jiangsu Collaborative Innovation Center of Photovoltaic Science and Engineering Changzhou University Changzhou People's Republic of China
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41
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Yang B, Wei Y, Qiu Y, Ramakrishna S, Liu Y. A novel bio‐based, flame retardant and latent imidazole compound—Its synthesis and uses as curing agent for epoxy resins. J Appl Polym Sci 2022. [DOI: 10.1002/app.53079] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Bo Yang
- State Key Laboratory of New Textile Materials and Advanced Processing Technologies, School of Textile Science and Engineering Wuhan Textile University Wuhan China
| | - Yi Wei
- Donghua University Center for Civil Aviation Composites Donghua University Shanghai China
| | - Yiping Qiu
- Donghua University Center for Civil Aviation Composites Donghua University Shanghai China
| | - Seeram Ramakrishna
- Center for Nanofibers and Nanotechnology, Department of Mechanical Engineering National University of Singapore Singapore Singapore
| | - Yanbo Liu
- State Key Laboratory of New Textile Materials and Advanced Processing Technologies, School of Textile Science and Engineering Wuhan Textile University Wuhan China
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42
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One‐step flame retardant/hydrophobic finishing on cotton fabric with
ammonium salt of hexamethylenediamine ‐ N, N, N′, N′ ‐ tetra (methylphosphonic acid)
doped silica sol. J Appl Polym Sci 2022. [DOI: 10.1002/app.53050] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Li G, You F, Zhou S, Wang Z, Li D, Zhang X, Zhou C, Zhuang C, Zhao Y. Preparations, characterizations, thermal and flame retardant properties of cotton fabrics finished by boron-silica sol-gel coatings. Polym Degrad Stab 2022. [DOI: 10.1016/j.polymdegradstab.2022.110011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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Harhoosh AA, Yurtov EV, Bakhareva NI. Flame Retardant Strategies and the Physical Barrier Effect of Nanoparticles to Improve the Thermal Performance of a Polymer. THEORETICAL FOUNDATIONS OF CHEMICAL ENGINEERING 2022. [DOI: 10.1134/s0040579522040133] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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45
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Flame-retardant synergistic effect of hydroquinone bis(diphenyl phosphate) and tris(2-hydroxyethyl) isocyanurate on epoxy resin. Polym Bull (Berl) 2022. [DOI: 10.1007/s00289-022-04344-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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46
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Kang K, Iyer KA, Pyun J. On the Fundamental Polymer Chemistry of Inverse Vulcanization for Statistical and Segmented Copolymers from Elemental Sulfur. Chemistry 2022; 28:e202200115. [DOI: 10.1002/chem.202200115] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2022] [Indexed: 11/06/2022]
Affiliation(s)
- Kyung‐Seok Kang
- Department of Chemistry and Biochemistry University of Arizona 1306 E. University Blvd. Tucson AZ 85721 USA
| | - Krishnan A. Iyer
- ExxonMobil Chemical Company 5200 Bayway Drive Baytown TX 77520 USA
| | - Jeffrey Pyun
- Department of Chemistry and Biochemistry University of Arizona 1306 E. University Blvd. Tucson AZ 85721 USA
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Polyimide Copolymers and Nanocomposites: A Review of the Synergistic Effects of the Constituents on the Fire-Retardancy Behavior. ENERGIES 2022. [DOI: 10.3390/en15114014] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Carbon-based polymer can catch fire when used as cathode material in batteries and supercapacitors, due to short circuiting. Polyimide is known to exhibit flame retardancy by forming char layer in condensed phase. The high char yield of polyimide is attributed to its aromatic nature and the existence of a donor–acceptor complex in its backbone. Fabrication of hybrid polyimide material can provide better protection against fire based on multiple fire-retardancy mechanisms. Nanocomposites generally show a significant enhancement in mechanical, electrical, and thermal properties. Nanoparticles, such as graphene and carbon nanotubes, can enhance flame retardancy in condensed phase by forming a dense char layer. Silicone-based materials can also provide fire retardancy in condensed phase by a similar mechanism as polyimide. However, some inorganic fire retardants, such as phosphazene, can enhance flame retardancy in gaseous phase by releasing flame inhibiting radicals. The flame inhibiting radicals generated by phosphazene are released into the gaseous phase during combustion. A hybrid system constituted of polyimide, silicone-based additives, and phosphazene would provide significant improvement in flame retardancy in both the condensed phase and gas phase. In this review, several flame-retardant polyimide-based systems are described. This review which focuses on the various combinations of polyimide and other candidate fire-retardant materials would shed light on the nature of an effective multifunctional flame-retardant hybrid materials.
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48
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Flame retardancy of linear polyurethane with Diels–Alder adducts. Polym Bull (Berl) 2022. [DOI: 10.1007/s00289-022-04229-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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49
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Forchetti Casarino A, Casis N, Estenoz DA, Spontón ME. Synthesis and characterization of polybenzoxazine/silica‐based hybrid nanostructures for flame retardancy applications. POLYM ENG SCI 2022. [DOI: 10.1002/pen.25929] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Affiliation(s)
- Agustin Forchetti Casarino
- Instituto de Desarrollo Tecnológico para la Industria Química (INTEC), CONICET Santa Fe Argentina
- Facultad de Ingeniería Química Universidad Nacional del Litoral (UNL) Santa Fe Argentina
| | - Natalia Casis
- Instituto de Desarrollo Tecnológico para la Industria Química (INTEC), CONICET Santa Fe Argentina
- Facultad de Ingeniería Química Universidad Nacional del Litoral (UNL) Santa Fe Argentina
| | - Diana Alejandra Estenoz
- Instituto de Desarrollo Tecnológico para la Industria Química (INTEC), CONICET Santa Fe Argentina
- Facultad de Ingeniería Química Universidad Nacional del Litoral (UNL) Santa Fe Argentina
| | - Marisa Elisabet Spontón
- Instituto de Desarrollo Tecnológico para la Industria Química (INTEC), CONICET Santa Fe Argentina
- Facultad de Ingeniería Química Universidad Nacional del Litoral (UNL) Santa Fe Argentina
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50
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Feng X, Li G. UV curable, flame retardant, and pressure-sensitive adhesives with two-way shape memory effect. POLYMER 2022. [DOI: 10.1016/j.polymer.2022.124835] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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