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Wang J, Yu S, Xiao S. Research progress of triazine flame retardants. Macromol Res 2023. [DOI: 10.1007/s13233-023-00157-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/05/2023]
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Sisal-Fiber-Reinforced Polypropylene Flame-Retardant Composites: Preparation and Properties. Polymers (Basel) 2023; 15:polym15040893. [PMID: 36850176 PMCID: PMC9964811 DOI: 10.3390/polym15040893] [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: 12/30/2022] [Revised: 02/03/2023] [Accepted: 02/06/2023] [Indexed: 02/16/2023] Open
Abstract
Natural-fiber-reinforced polypropylene (PP) composites with a series of advantages including light weight, chemical durability, renewable resources, low in cost, etc., are being widely used in many fields such as the automotive industry, packaging, and construction. However, the flammability of plant fiber and the PP matrix restricts the application range, security, and use of these composites. Therefore, it is of great significance to study the flame retardants of such composites. In this paper, sisal-fiber-reinforced polypropylene (PP/SF) flame-retardant composites were prepared using the two-step melt blending method. The flame retardant used was an intumescent flame retardant (IFR) composed of silane-coated ammonium polyphosphate (Si-APP) and pentaerythritol (PER). The influence of different blending processes on the flammability and mechanical properties of the composites was analyzed. The findings suggested that PP/SF flame-retardant composites prepared via different blending processes showed different flame-retardant properties. The (PP/SF)/IFR composite prepared by PP/SF secondary blending with IFR showed excellent flame-retardant performance, with a limited oxygen index of about 28.3% and passing the UL-94 V-0 rating (3.2 mm) in the vertical combustion test. Compared with the (PP/IFR) /SF composite prepared by a matrix primarily blended with IFR and then secondly blended with SF, the peak heat release rate (pk HRR) and total heat release (THR) of the (PP/SF)/IFR composite decreased by 11.3% and 13.7%, respectively. In contrast, the tensile strength of the (PP/SF)/IFR system was 5.3% lower than that of the (PP/IFR)/SF system; however, the overall mechanical (tensile, flexural, and notched impact) properties of the composites prepared using three different mixing processes were similar.
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3
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Liu W, Ding L, Wang L, Zhang C, Yang W, Liu D, Gui Z, Hu W. A rational design of functionalized black phosphorus cooperates with piperazine pyrophosphate to significantly suppress the fire hazards of polypropylene. CHEMOSPHERE 2023; 314:137686. [PMID: 36584824 DOI: 10.1016/j.chemosphere.2022.137686] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/17/2022] [Revised: 12/21/2022] [Accepted: 12/27/2022] [Indexed: 06/17/2023]
Abstract
The flammability of polypropylene (PP) not only has negative effects on human health but also causes environmental pollution. Herein, from the molecular polarity point of view, rationally designed hyperbranched charring foaming agents (HCFA) modified black phosphorus nanosheets by in situ polymerization to solve the fire hazards of PP. Based on the UL-94 test V-0 rating, the conventional flame retardant of piperazine pyrophosphate (PAPP) is substituted partly by the BP@PPC. Surprisingly, compared with 27 wt% of PAPP/PP, composites consisting of only 2 wt% of BP@PPC and 20 wt% PAPP/PP also passes the V-0 rating. The results of the cone calorimeter test confirmed that adding BP@PPC decreases the total heat release (THR) and peak heat release (PHRR) by a large amount, which are decreased by 23.4%, 85.8% respectively compared with PP. Moreover, it is uncommon for the fire growth index of BP@PPC composites to be 66.7% lower than that of PAPP/PP composites. In addition, the incorporation of BP@PPC has almost no impact on the mechanical characteristics of PP composites. This study offers a reference for combining established flame retardants with novel compounds to modify the burning behaviors of PP.
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Affiliation(s)
- Wei Liu
- State Key Laboratory of Fire Science, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui, 230026, PR China
| | - Longlong Ding
- Zhuhai Gree New Material Co., Ltd., 789 Jinji Road, Xiangzhou District, Zhuhai, China
| | - Lin Wang
- Zhuhai Gree New Material Co., Ltd., 789 Jinji Road, Xiangzhou District, Zhuhai, China
| | - Congwu Zhang
- Zhuhai Gree New Material Co., Ltd., 789 Jinji Road, Xiangzhou District, Zhuhai, China
| | - Weiye Yang
- Zhuhai Gree New Material Co., Ltd., 789 Jinji Road, Xiangzhou District, Zhuhai, China
| | - Dongli Liu
- Zhuhai Gree New Material Co., Ltd., 789 Jinji Road, Xiangzhou District, Zhuhai, China.
| | - Zhou Gui
- State Key Laboratory of Fire Science, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui, 230026, PR China.
| | - Weizhao Hu
- State Key Laboratory of Fire Science, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui, 230026, PR China.
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Yang T, Wu Y, Cheng Y, Huang T, Yu B, Zhu M, Yu H. Synthesis of a charring agent containing triazine and benzene groups and its intumescent flame retardant performance for polypropylene. Polym Degrad Stab 2022. [DOI: 10.1016/j.polymdegradstab.2022.110107] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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Dang L, Lv Z, Liu X. Influences of
4ZnO
·
B
2
O
3
·
H
2
O
whisker based intumescent flame retardant on the mechanical, flame retardant and smoke suppression properties of polypropylene composites. J Appl Polym Sci 2021. [DOI: 10.1002/app.51016] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Li Dang
- School of Chemical Engineering Qinghai University Xining China
| | - Zhihui Lv
- School of Chemical Engineering Qinghai University Xining China
| | - Xin Liu
- Key Laboratory of Comprehensive and Highly Efficient Utilization of Salt Lake Resources, Qinghai Technology Research and Development Center of Comprehensive Utilization of Salt Lakes Resources, Qinghai Institute of Salt Lakes Chinese Academy of Sciences Xining China
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Wang B, Li J, Lai X, Li H, Chen Y, Zeng X. Synthesis of a novel
N
‐alkoxyamine containing macromolecular intumescent flame retardant and its synergism in flame‐retarding polypropylene. POLYM ADVAN TECHNOL 2021. [DOI: 10.1002/pat.5275] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- Binglin Wang
- School of Materials Science and Engineering, Key Lab of Guangdong Province for High Property and Functional Polymer Materials South China University of Technology Guangzhou P. R. China
| | - Jiaxin Li
- School of Materials Science and Engineering, Key Lab of Guangdong Province for High Property and Functional Polymer Materials South China University of Technology Guangzhou P. R. China
| | - Xuejun Lai
- School of Materials Science and Engineering, Key Lab of Guangdong Province for High Property and Functional Polymer Materials South China University of Technology Guangzhou P. R. China
| | - Hongqiang Li
- School of Materials Science and Engineering, Key Lab of Guangdong Province for High Property and Functional Polymer Materials South China University of Technology Guangzhou P. R. China
| | - Yishen Chen
- School of Materials Science and Engineering, Key Lab of Guangdong Province for High Property and Functional Polymer Materials South China University of Technology Guangzhou P. R. China
| | - Xingrong Zeng
- School of Materials Science and Engineering, Key Lab of Guangdong Province for High Property and Functional Polymer Materials South China University of Technology Guangzhou P. R. China
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Pan Y, Luo Z, Wang B. Synergistic flame retardant effect of piperazine salt and ammonium polyphosphate as intumescent flame retardant system for polypropylene. J Appl Polym Sci 2021. [DOI: 10.1002/app.49813] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
- Yingtong Pan
- 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 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 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 China
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Chen Y, Wu X, Qian L. Flame‐retardant behavior and protective layer effect of phosphazene‐triazine bi‐group flame retardant on polycarbonate. J Appl Polym Sci 2020. [DOI: 10.1002/app.49523] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Yajun Chen
- School of Materials Science and Mechanical Engineering, Beijing Technology and Business University Beijing China
- Engineering Laboratory of non‐halogen flame retardants for polymers Beijing China
- Beijing Key Laboratory of Quality Evaluation Technology for Hygiene and Safety of Plastics Beijing China
| | - Xingde Wu
- School of Materials Science and Mechanical Engineering, Beijing Technology and Business University Beijing China
- Engineering Laboratory of non‐halogen flame retardants for polymers Beijing China
- Beijing Key Laboratory of Quality Evaluation Technology for Hygiene and Safety of Plastics Beijing China
| | - Lijun Qian
- School of Materials Science and Mechanical Engineering, Beijing Technology and Business University Beijing China
- Engineering Laboratory of non‐halogen flame retardants for polymers Beijing China
- Beijing Key Laboratory of Quality Evaluation Technology for Hygiene and Safety of Plastics Beijing China
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Tang W, Qian L, Chen Y, Qiu Y, Xu B, Li J. Joint‐aggregation intumescent flame‐retardant effect of ammonium polyphosphate and charring agent in polypropylene. POLYM ADVAN TECHNOL 2020. [DOI: 10.1002/pat.4897] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Wei Tang
- School of Materials Science and Mechanical EngineeringBeijing Technology and Business University Beijing China
- Engineering Laboratory of non‐halogen flame retardants for polymers Beijing China
| | - Lijun Qian
- School of Materials Science and Mechanical EngineeringBeijing Technology and Business University Beijing China
- Engineering Laboratory of non‐halogen flame retardants for polymers Beijing China
| | - Yajun Chen
- School of Materials Science and Mechanical EngineeringBeijing Technology and Business University Beijing China
- Engineering Laboratory of non‐halogen flame retardants for polymers Beijing China
| | - Yong Qiu
- School of Materials Science and Mechanical EngineeringBeijing Technology and Business University Beijing China
- Engineering Laboratory of non‐halogen flame retardants for polymers Beijing China
| | - Bo Xu
- School of Materials Science and Mechanical EngineeringBeijing Technology and Business University Beijing China
- Engineering Laboratory of non‐halogen flame retardants for polymers Beijing China
| | - Juan Li
- Ningbo Institute of Materials Technology and Engineering Chinese Academy of Sciences Ningbo Zhejiang China
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Salmeia KA, Neels A, Parida D, Lehner S, Rentsch D, Gaan S. Insight into the Synthesis and Characterization of Organophosphorus-Based Bridged Triazine Compounds. Molecules 2019; 24:molecules24142672. [PMID: 31340573 PMCID: PMC6681112 DOI: 10.3390/molecules24142672] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2019] [Revised: 07/19/2019] [Accepted: 07/22/2019] [Indexed: 11/24/2022] Open
Abstract
In this article, we report the synthesis of 2,4,6-substituted s-triazine-based organophosphorus compounds via a two-step process, which enables their production in high yields, and with a high purity as solids. In the first step, a Michaelis–Arbuzov rearrangement of cyanuric chloride with triethyl phosphite afforded 2,4,6-trisdiethoxyphosphinyl-1,3,5-triazine (HEPT). Subsequently, the nucleophilic substitution reaction on the triazine carbon was achieved, owing to the electron-withdrawing ability of the phosphonate groups. This characteristic of HEPT facilitated its derivatization with bi-functional amines, producing novel P–C containing bridged triazine organophosphorus compounds. The molecular structures of all of the compounds were confirmed by NMR spectroscopy, CHN elemental analysis, and single crystal X-ray analysis. In the thermogravimetric analysis in an N2 environment, >33% char formation was observed for the bridged compounds. The chemical composition analysis of the char obtained under the oxidative thermal decomposition of the bridged compounds confirmed the presence of phosphorus- and nitrogen-enriched species, which indicate their function in the condensed phase. Comparatively, the detection of HPO and H–C≡P in the gas phase during the pyrolysis of the bridged compounds can act as a source for PO•, which is known for its gas phase flame inhibition reactions. The synergy of significant char formation and the generation of intermediates leading to PO• during pyrolysis makes these molecules promising flame-retardant additives.
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Affiliation(s)
- Khalifah A Salmeia
- Additives and Chemistry, Advanced Fibers, Empa Swiss Federal Laboratories for Materials Science and Technology, Lerchenfeldstrasse 5, 9014 St. Gallen, Switzerland.
| | - Antonia Neels
- Center for X-ray Analytics, Swiss Federal Laboratories for Materials Science and Technology, Empa, Überlandstrasse 129, 8600 Dübendorf, Switzerland.
| | - Dambarudhar Parida
- Additives and Chemistry, Advanced Fibers, Empa Swiss Federal Laboratories for Materials Science and Technology, Lerchenfeldstrasse 5, 9014 St. Gallen, Switzerland
| | - Sandro Lehner
- Additives and Chemistry, Advanced Fibers, Empa Swiss Federal Laboratories for Materials Science and Technology, Lerchenfeldstrasse 5, 9014 St. Gallen, Switzerland
| | - Daniel Rentsch
- Laboratory for Functional Polymers, Empa Swiss Federal Laboratories for Materials Science and Technology, Überlandstrasse 129, 8600 Dübendorf, Switzerland
| | - Sabyasachi Gaan
- Additives and Chemistry, Advanced Fibers, Empa Swiss Federal Laboratories for Materials Science and Technology, Lerchenfeldstrasse 5, 9014 St. Gallen, Switzerland
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