Study on the influence mechanism of phosphorus-containing flame retardants on the flame retardant and thermal properties of epoxy resin

doi:10.19936/j.cnki.2096-8000.20221128.016

Abstract

Abstract: Aiming at the problem that epoxy resin is flammable and emits a large amount of smoke, green and environmentally friendly organophosphorus flame retardants are used to realize the flame retardant modification of epoxy resin. The curing process of the resin system is studied by the rotational viscosity method and the DSC method, and determine the curing system. The curing kinetic analysis method is used to determine the curing kinetic equation of the epoxy resin. DMA, TG and combustion tests are used to study the glass transition temperature, thermal performance and flame retardancy of the epoxy resin by the organic phosphorus flame retardant performance impact. The results show that when 10~15 parts of flame retardant are added, the flame retardant grade of epoxy resin casting body reaches V-0, the limiting oxygen index reaches 29.3%~32.1%, the storage modulus increases, the amount of carbon residue increases, and the glass transition temperature has dropped to a certain extent. Further analysis shows that the organic phosphorus flame retardant has the dual flame retardant effect of gas phase and condensed phase on epoxy resin.

Key words: epoxy resin, flame retardant, glass transition temperature, casting body

CLC Number:

TB332

WANG Shu-xia, CHEN Feng, YAO Li-chao, ZHAI Jun-ming. Study on the influence mechanism of phosphorus-containing flame retardants on the flame retardant and thermal properties of epoxy resin[J]. COMPOSITES SCIENCE AND ENGINEERING, 2022, 0(11): 107-113.

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