Facile fabrication of high-performance epoxy systems with superior mechanical properties, flame retardancy, and smoke suppression

被引：4
作者：
Wu, Qilei [1 ]
Xiao, Long [1 ]
Chen, Junfeng [1 ]
Peng, Zhihe [1 ]
机构：
[1] China Ship Dev & Design Ctr, Sci & Technol Electromagnet Compatibil Lab, Wuhan, Peoples R China
来源：
JOURNAL OF APPLIED POLYMER SCIENCE | 2023年 / 140卷 / 07期
基金：
中国国家自然科学基金;
关键词：
cyclotriphosphazene; epoxy resin; flame retardancy; phosphaphenanthrene; smoke suppression; CURING AGENT; LOW FLAMMABILITY; RESIN; PHOSPHORUS; DOPO; BEHAVIOR;
D O I：
10.1002/app.53480
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
The realization of high-performance thermosetting polymers with superior mechanical properties, flame retardancy and smoke suppression is very necessary but not yet implemented. Herein, a flame-retardant curing agent (BICPD) combining cyclotriphosphazene and phosphaphenanthrene groups was synthesized, and used to prepare high-performance, flame-retardant epoxy (EP/BICPD) systems. Our results showed that the EP/BICPD systems began to cure at 110 degrees C and solidify rapidly under heating. In comparison to the common epoxy system, the EP/BICPD thermosets exhibited improved glass transition temperature and mechanical properties. Most impressively, the EP/BICPD thermosets possessed outstanding flame retardancy and smoke suppression. The EP/BICPD-20 thermoset achieved the LOI value of 37.7% and passed the UL94 V-0 rating. Additionally, compared with the common epoxy thermoset, the peak of heat release rate (pHRR) and total smoke production (TSP) of EP/BICPD-20 thermoset were reduced by similar to 70.0% and similar to 43.4%, respectively. The significant enhancements in flame retardancy and smoke suppression was mainly due to the collaboration of cyclotriphosphazene and phosphaphenanthrene in condensed and gaseous phases. Therefore, the high-performance EP/BICPD systems with high glass transition temperature, satisfied mechanical properties, superior flame retardancy and smoke suppression showed profound scientific and industrial significance.
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页数：9
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