Self-extinguishing and transparent epoxy resin modified by a phosphine oxide-containing bio-based derivative

作     者：Gang Tang Ruiqing Zhao Dan Deng Yadong Yang Depeng Chen Bing Zhang Xinliang Liu Xiuyu Liu 

作者机构：School of Architecture and Civil EngineeringAnhui University of TechnologyMa’anshan243002China College of Resources and EnvironmentFujian Agriculture and Forestry UniversityFuzhou350002China Department of Polymer Science and EngineeringJiaxing UniversityJiaxing314001China 

出 版 物：《Frontiers of Chemical Science and Engineering》 (化学科学与工程前沿（英文版）)

年 卷 期：2021年第15卷第5期

页      面：1269-1280页

核心收录：

学科分类：08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 

基　　金：the National Natural Science Fundation of China(Grant Nos.51978002 and 51403004) the Jiaxing Science and Technology Project(Grant No.2020AD10020) Postdoctoral Science Foundation of China(Grant No.2017M610399) 

主　　题：epoxy resin flame retardant furan derivative diphenylphosphine oxide 

摘      要：A phosphine oxide-containing bio-based curing agent was synthesized by addition reaction between furan derivatives and diphenylphosphine *** molecular structure of the as-prepared bio-based curing agent was confirmed by Fourier transform infrared spectroscopy and nuclear magnetic resonance *** mechanical analysis results indicated that with the increase of bio-based curing agent content,the glass transition temperature of epoxy/bio-based curing agent composites decreased,which was related to the steric effect of diphenylphosphine oxide species that possibly hinder the curing reaction as well as the reduction in the cross-linking density by mono-functional *** the addition of 7.5 wt-%bio-based curing agent,the resulting epoxy composite achieved UL-94 V-0 rating,in addition to limiting oxygen index of 32.0 vol-%.With the increase of content for the bio-based curing agent,the peak of heat release rate and total heat release of the composites gradually *** bio-based curing agent promoted the carbonization of the epoxy matrix,leading to higher char yield with good thermal *** high-quality char layer served as an effective barrier to retard the diffusion of decomposition volatiles and oxygen between molten polymers and the *** study provides a renewable strategy for fabricating flame retardant and transparent epoxy thermoset.