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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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Wang J, Chen X, Wang J, Yang S, Chen K, Zhu L, Huo S, Song P, Wang H. High-performance, intrinsically fire-safe, single-component epoxy resins and carbon fiber reinforced epoxy composites based on two phosphorus-derived imidazoliums. Polym Degrad Stab 2023. [DOI: 10.1016/j.polymdegradstab.2023.110261] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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