A phosphorus-containing hyperbranched phthalocyanine flame retardant for epoxy resins

被引：29
|
作者：
Zheng, Penglun [1 ,2 ]
Wang, Rui [1 ,2 ]
Wang, Donghui [1 ,2 ]
Peng, Xiaoliang [1 ,2 ]
Zhao, Yang [3 ]
Liu, Quanyi [1 ,2 ]
机构：
[1] Civil Aviat Flight Univ China, Coll Civil Aviat Safety Engn, Guanghan 618307, Peoples R China
[2] Civil Aircraft Fire Sci & Safety Engn Key Lab Sic, Deyang, Peoples R China
[3] Tsinghua Univ, Sch Vehicle & Mobil, Beijing, Peoples R China
来源：
SCIENTIFIC REPORTS | 2021年 / 11卷 / 01期
基金：
中国国家自然科学基金;
关键词：
THERMAL-STABILITY; DEGRADATION; OLIGOMER; FTIR;
D O I：
10.1038/s41598-021-96927-y
中图分类号：
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号：
07 ; 0710 ; 09 ;
摘要：
A hyperbranched phosphorus-containing copper phthalocyanine compound (DOPO-CuPc) was successfully synthesized and used as the flame-retardant additive to prepare flame-retarded epoxy thermosets. The addition of DOPO-CuPc led to a significant enhancement of the flame retardant properties of the epoxy resin. The 15DOPO-CuPc/EP composite obtained a LOI value of 35.8%, and the UL-94 rose from NR to V-0 rating. And the addition of DOPO-CuPc resulted in early decomposition of the epoxy thermoset, but the residual char at 700 degrees C reached 27.7%. The flame retardant mechanism was further investigated. It was found that DOPO-CuPc could release phosphorus-containing radicals and non-combustible gases in the gas phase to exert gas-phase flame retardant activity. In the condensed phase, the epoxy thermoset formed the expanded honeycomb-like char layer during combustion and the presence of copper phthalocyanine contributed to the stability of the char layer.
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页数：10
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