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Liu Y, Xu S, Chen Q, Xu J, Sun B. Synergistic effect of modified anhydrous magnesium carbonate and hexaphenoxycyclotriphosphazene on flame retardancy of ethylene-vinyl acetate copolymer. RSC Adv 2024; 14:15143-15154. [PMID: 38725564 PMCID: PMC11079627 DOI: 10.1039/d4ra01669f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2024] [Accepted: 04/30/2024] [Indexed: 05/12/2024] Open
Abstract
Ethylene-vinyl acetate copolymer (EVA) is widely used in various applications; however, its flammability limits its application in wire and cable industries. In this study, 3-methacryloxypropyltrimethoxysilane (KH570) was successfully grafted onto the surface of anhydrous magnesium carbonate (AMC) by alkali activation treatment. The KH570 modified AMC (AMC@KH570) was then introduced into the EVA matrix along with hexaphenoxycyclotriphosphazene (HPCTP) to assess their effects on the flame retardancy and mechanical properties of EVA composites. The results illustrate a significant synergistic effect in enhancing the flame retardancy of EVA composites by using AMC@KH570 and HPCTP, and the limiting oxygen index (LOI) and vertical burning test (UL-94) of EVA filled with 5 wt% HPCTP and 45 wt% AMC@KH570 (mAMC/H-45-5) reached 27.6% and V-0, respectively. The flame retardant mechanism was investigated by thermogravimetric/infrared (TG-IR) spectroscopy and residual carbon composition analysis. The results show that the thermal decomposition of AMC@KH570 and HPCTP consists of gas dilution, free radical quenching, and catalytic carbonization. Furthermore, KH570 works as a bridge to improve the compatibility of AMC and EVA matrix, which offsets the mechanical loss of EVA to some extent. The present research provides a new path to modify AMC and fabricate EVA composites with excellent flame retardant properties.
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Affiliation(s)
- Yuan Liu
- School of Materials Science and Engineering, East China University of Science and Technology Shanghai 200237 China
| | - Shiai Xu
- School of Materials Science and Engineering, East China University of Science and Technology Shanghai 200237 China
- Qinghai Provincial Key Laboratory of Salt Lake Materials Chemical Engineering, School of Chemical Engineering, Qinghai University Xining 810016 China
| | - Qinghua Chen
- School of Materials Science and Engineering, East China University of Science and Technology Shanghai 200237 China
| | - Jie Xu
- School of Materials Science and Engineering, East China University of Science and Technology Shanghai 200237 China
| | - Beibei Sun
- Qinghai Provincial Key Laboratory of Salt Lake Materials Chemical Engineering, School of Chemical Engineering, Qinghai University Xining 810016 China
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2
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Xiang S, Tang B, Feng J, Lin X, Liu F, Yang H, Feng X, Wan C. Eco-Friendly One-Pot Supramolecular-Assembly of P-N Flame Retardant for Fire-Safe Epoxy Resin. Macromol Rapid Commun 2023; 44:e2300358. [PMID: 37572054 DOI: 10.1002/marc.202300358] [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: 06/20/2023] [Revised: 08/06/2023] [Indexed: 08/14/2023]
Abstract
Flame retardant treatment of epoxy resins (EP) to reduce their flammability for extending their range of applications attracts considerable attention. However, the synthesis process of conventional flame retardants is complicated and involves organic hazardous solvents. Meanwhile, how to ensure both the flame-retardant and mechanical properties is a long-standing and actual difficult problem. In this work, a supramolecular flame retardant (named ATPFR) is facilely created by one-pot reaction, using cheap and accessible raw materials in an ecologically benign aqueous solvent. ATPFR is applied to improve the fire safety of EP. With only 5 wt% ATPFR addition, EP can reach the limiting oxygen index of 28.5% and the UL-94 V-0 rating with a significant "blow-out effect." The cone calorimetry test reveals that the EP thermoset with 5 wt% ATPFR has a 75.8% reduction in the peak heat release rate (p-HRR) and a 67.3% reduction in the peak smoke production rate (p-SPR), respectively, compared with the pure EP. Additionally, EP composites with the small amount of ATPFR exhibit a slight decrease and maintain good mechanical properties. Therefore, the facile synthesis and application of this supramolecular flame retardant provide a reliable way for the construction of polymer materials with environment-friendly and effective flame-retardant system.
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Affiliation(s)
- Simeng Xiang
- College of Materials Science and Engineering, Chongqing University, 174 Shazhengjie, Shapingba, Chongqing, 400044, China
| | - Bin Tang
- College of Materials Science and Engineering, Chongqing University, 174 Shazhengjie, Shapingba, Chongqing, 400044, China
| | - Jiao Feng
- College of Materials Science and Engineering, Chongqing University, 174 Shazhengjie, Shapingba, Chongqing, 400044, China
| | - Xiang Lin
- College of Materials Science and Engineering, Chongqing University, 174 Shazhengjie, Shapingba, Chongqing, 400044, China
| | - Feng Liu
- College of Materials Science and Engineering, Chongqing University, 174 Shazhengjie, Shapingba, Chongqing, 400044, China
| | - Hongyu Yang
- College of Materials Science and Engineering, Chongqing University, 174 Shazhengjie, Shapingba, Chongqing, 400044, China
| | - Xiaming Feng
- College of Materials Science and Engineering, Chongqing University, 174 Shazhengjie, Shapingba, Chongqing, 400044, China
| | - Chaojun Wan
- College of Materials Science and Engineering, Chongqing University, 174 Shazhengjie, Shapingba, Chongqing, 400044, China
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Zhao Y, Li Y, Li J, Xiao Y, Mu W, Wang Z, Song L, Yu J. Flame Retardancy of Epoxy Resins Modified with Few-Layer Black Phosphorus. Polymers (Basel) 2023; 15:polym15071655. [PMID: 37050271 PMCID: PMC10097328 DOI: 10.3390/polym15071655] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2022] [Revised: 03/11/2023] [Accepted: 03/14/2023] [Indexed: 03/29/2023] Open
Abstract
Few-layer black phosphorus (BP)- and red phosphorus (RP)-modified diglycidyl ether of bisphenol A-based epoxy resins (EP) was prepared with 4,4′-diaminodiphenylsulfone as a curing agent. The thermal stability and flame-retardant properties of the modified EPs were compared. Both BP and RP were able to improve the flame-retardant properties of EPs, while the BP showed higher flame-retardant efficiency than RP. As a two-dimensional nanomaterial, BP exhibited good compatibility, high flame-retardant efficiency, and negligible impact on the mechanical and thermal stability of EP. Pyrolysis-gas Fourier-transform infrared spectroscopic analysis of EP showed that the addition of BP significantly inhibited the release of pyrolysis products in the gas phase. The modes of action for flame-retardant BPs in gas phase and condensed phase were proposed.
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Affiliation(s)
- Yongzheng Zhao
- College of Materials Science and Engineering, Shandong University of Science and Technology, Qingdao 266590, China
| | - Yan Li
- College of Biology and Chemical Engineering, Qingdao Technical College, Qingdao 266555, China
| | - Jiaxuan Li
- College of Materials Science and Engineering, Shandong University of Science and Technology, Qingdao 266590, China
| | - Yifan Xiao
- College of Materials Science and Engineering, Shandong University of Science and Technology, Qingdao 266590, China
| | - Wenmin Mu
- College of Materials Science and Engineering, Shandong University of Science and Technology, Qingdao 266590, China
| | - Zhongwei Wang
- College of Materials Science and Engineering, Shandong University of Science and Technology, Qingdao 266590, China
- Correspondence: (Z.W.); (L.S.)
| | - Liang Song
- College of Materials Science and Engineering, Shandong University of Science and Technology, Qingdao 266590, China
- Correspondence: (Z.W.); (L.S.)
| | - Jinhong Yu
- Key Laboratory of Marine Materials and Related Technologies, Zhejiang Key Laboratory of Marine Materials and Protective Technologies, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, China
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4
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Amino Phenyl Copper Phosphate-Bridged Reactive Phosphaphenanthrene to Intensify Fire Safety of Epoxy Resins. MOLECULES (BASEL, SWITZERLAND) 2023; 28:molecules28020623. [PMID: 36677680 PMCID: PMC9861604 DOI: 10.3390/molecules28020623] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/09/2022] [Revised: 01/03/2023] [Accepted: 01/04/2023] [Indexed: 01/11/2023]
Abstract
To improve the compatibility between flame retardant and epoxy resin (EP) matrix, amino phenyl copper phosphate-9, 10-dihydro-9-oxygen-10-phospha-phenanthrene-10-oxide (CuPPA-DOPO) is synthesized through surface grafting, which is blended with EP matrix to prepare EP/CuPPA-DOPO composites. The amorphous structure of CuPPA-DOPO is characterized by X-ray diffraction and Fourier-transform infrared spectroscopy. Scanning electron microscope (SEM) images indicate that the agglomeration of hybrids is improved, resisting the intense intermolecular attractions on account of the acting force between CuPPA and DOPO. The results of thermal analysis show that CuPPA-DOPO can promote the premature decomposition of EP and increase the residual amount of EP composites. It is worth mentioning that EP/6 wt% CuPPA-DOPO composites reach UL-94 V-1 level and limiting oxygen index (LOI) of 32.6%. Meanwhile, their peak heat release rate (PHRR), peak smoke production release (PSPR) and CO2 production (CO2P) are decreased by 52.5%, 26.1% and 41.4%, respectively, compared with those of EP. The inhibition effect of CuPPA-DOPO on the combustion of EP may be due to the release of phosphorus and ammonia free radicals, as well as the catalytic charring ability of metal oxides and phosphorus phases.
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Lu J, Chen L, Luo Z, Wang B. A vanillin‐containing
DOPO
‐based compound for improving the flame retardancy of epoxy resin simultaneously with comparable transparency and mechanical property. J Appl Polym Sci 2022. [DOI: 10.1002/app.53556] [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)
- Jiayi Lu
- 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 Jiangsu People's Republic of China
| | - Liping Chen
- 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 Jiangsu 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 Jiangsu 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 Jiangsu People's Republic of China
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Wang Y, Yuan J, Wang H, Ma L, Lin X, Deng H, Zhu Z. A phosphaphenanthrene‐based derivative for simultaneously improving flame retardant and smoke suppression of epoxy resin composites. POLYM ADVAN TECHNOL 2022. [DOI: 10.1002/pat.5804] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Affiliation(s)
- Yadong Wang
- College of Materials Science and Engineering, State Key Laboratory of New Textile Materials and Advanced Processing Technologies Wuhan Textile University Wuhan China
| | - Jun Yuan
- College of Materials Science and Engineering, State Key Laboratory of New Textile Materials and Advanced Processing Technologies Wuhan Textile University Wuhan China
| | - Hao Wang
- College of Materials Science and Engineering, State Key Laboratory of New Textile Materials and Advanced Processing Technologies Wuhan Textile University Wuhan China
| | - Li Ma
- College of Materials Science and Engineering, State Key Laboratory of New Textile Materials and Advanced Processing Technologies Wuhan Textile University Wuhan China
| | | | - Hua Deng
- Hubei Three Gorges Laboratory Yichang China
| | - Zongmin Zhu
- College of Materials Science and Engineering, State Key Laboratory of New Textile Materials and Advanced Processing Technologies Wuhan Textile University Wuhan China
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Cheng Y, Zhang L, Li C. Preparation of flame retardant glass fiber via emulsion impregnation and application in polyamide 6. JOURNAL OF POLYMER ENGINEERING 2022. [DOI: 10.1515/polyeng-2022-0022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
As a commonly used reinforcement, glass fiber (GF) can improve the mechanical properties of thermoplastics. However, previous studies have suggested that GF was not good for the flame retardancy of thermoplastics because of “wick effect.” Herein, a novel flame retardant emulsion was synthesized, containing film-former, lubricant, silane coupling agent, and ammonium polyphosphate modified by 3-aminopropyltriethoxysilane (mAPP). The GF impregnated with flame retardant emulsion and aluminum diethlyphosphinate (ADP) were blended with polyamide 6 (PA6) to prepare flame retardant GF reinforced PA6 (FRGFPA6/ADP). The LOI of FRGFPA6/ADP-15 can reach 34.7%, which is much higher than that of GF reinforced PA6 (GFPA6) and it also pass the UL-94 test and reach V-0 rating without dripping. The mHRR, pHRR, and THR of FRGFPA6/ADP-15 are reduced by 44.2, 121.0, and 26.3% compared to GFPA6. After burning, the surface of flame retardant GF can form a carbon layer, which improved the efficiency of interfacial flame retardancy between GF and PA6 and weakened the “wick effect.” At the same time, ADP is added to the matrix to release free radicals to capture oxygen in the air, and carbon layer is formed to isolate the air. The synergistic effect of ADP and mAPP increased the flame retardancy of GFPA6.
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Affiliation(s)
- Yue Cheng
- Shanghai Engineering Research Center of Hierarchical Nanomaterials, Key Laboratory for Ultrafine Materials of Ministry of Education, Frontiers Science Center for Materiobiology and Dynamic Chemistry, School of Materials Science and Engineering , East China University of Science & Technology , Shanghai 200237 , China
| | - Ling Zhang
- Shanghai Engineering Research Center of Hierarchical Nanomaterials, Key Laboratory for Ultrafine Materials of Ministry of Education, Frontiers Science Center for Materiobiology and Dynamic Chemistry, School of Materials Science and Engineering , East China University of Science & Technology , Shanghai 200237 , China
| | - Chunzhong Li
- Shanghai Engineering Research Center of Hierarchical Nanomaterials, Key Laboratory for Ultrafine Materials of Ministry of Education, Frontiers Science Center for Materiobiology and Dynamic Chemistry, School of Materials Science and Engineering , East China University of Science & Technology , Shanghai 200237 , China
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8
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Mei F, Tian C, Li H, Huang S, Yu Q, Han Y, Wang Z. A novel nitrogen-containing DPO derivative as flame retardant and co-curing agent for epoxy resin. PHOSPHORUS SULFUR 2022. [DOI: 10.1080/10426507.2021.2012472] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Fengce Mei
- College of Materials Science and Engineering, Shandong University of Science and Technology, Qingdao, China
| | - Chong Tian
- College of Materials Science and Engineering, Shandong University of Science and Technology, Qingdao, China
| | - Hubo Li
- Qingdao Park Management Service Center, Qingdao, China
| | - Shan Huang
- College of Materials Science and Engineering, Shandong University of Science and Technology, Qingdao, China
| | - Qing Yu
- College of Materials Science and Engineering, Shandong University of Science and Technology, Qingdao, China
| | - Yuxi Han
- College of Materials Science and Engineering, Shandong University of Science and Technology, Qingdao, China
| | - Zhongwei Wang
- College of Materials Science and Engineering, Shandong University of Science and Technology, Qingdao, China
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9
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Duan H, Xu X, Leng K, Zhang S, Han Y, Gao J, Yu Q, Wang Z. A (4‐fluorophenyl)(phenyl)phosphine oxide‐modified epoxy resin with improved flame‐retardancy, hydrophobicity, and dielectric properties. J Appl Polym Sci 2021. [DOI: 10.1002/app.50792] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Affiliation(s)
- Haodong Duan
- College of Chemical and Biological Engineering Shandong University of Science and Technology Qingdao China
| | - Xiaolei Xu
- College of Materials Science and Engineering Shandong University of Science and Technology Qingdao China
| | - Kangwei Leng
- College of Materials Science and Engineering Shandong University of Science and Technology Qingdao China
| | - Sheng Zhang
- College of Materials Science and Engineering Beijing University of Chemical Technology Beijing China
| | - Yuxi Han
- College of Materials Science and Engineering Shandong University of Science and Technology Qingdao China
| | - Jun Gao
- College of Chemical and Biological Engineering Shandong University of Science and Technology Qingdao China
| | - Qing Yu
- College of Materials Science and Engineering Shandong University of Science and Technology Qingdao China
| | - Zhongwei Wang
- College of Materials Science and Engineering Shandong University of Science and Technology Qingdao China
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