酸/碱可降解环氧树脂的合成与应用  

Synthesis and application of acid/alkali degradable epoxy resin

作　　者：王雷 张磊 严石静 麦裕良 庞浩 李伟浩 Wang Lei;Zhang Lei;Yan Shijing;Mai Yuliang;Pang Hao;Li Weihao(Institute of Chemical Engineering Guangdong Academy of Sciences,Guangdong Key Laboratory of Industrial Surfactant,Guangzhou 510665,Guangdong,China;School of Chemistry and Chemical Engineering,Guangxi University for Nationalities,Guangxi Key Laboratory of Chemistry and Engineering of Forest Products,Nanning 530008,Guangxi,China)

机构地区：[1]广东省科学院化工研究所广东省工业表面活性剂重点实验室,广东广州510665 [2]广西民族大学化学化工学院广西林产化学与工程重点实验室,广西南宁530008

出　　处：《中国胶粘剂》2021年第12期9-14,26,共7页China Adhesives

基　　金：国家自然科学基金项目(51903061);广东省自然科学基金项目(2018A030313239);广东省科学院创新驱动发展能力建设项目(2018GDASCX-0807,2018GDASCX-0116和2018GDASCX-0960)。

摘　　要：以1,3,5-三丙烯酰基六氢三嗪(TAHT)为原料与正丙胺反应,得到具有仲胺基团的六氢三嗪衍生物(TAHT-PA);并将其作为环氧树脂的固化剂,与4,4’-二氨基二苯基甲烷(DDM)按特定物质的量比混合,配制系列环氧树脂固化物。通过红外图谱、核磁氢谱与核磁碳谱确定TAHT-PA的分子结构,并对水解机理进行了探讨。同时还研究了环氧固化物的热性能、力学性能与降解性能,探讨了其酸/碱水解方法的机理。研究结果表明:成功制备了TAHT-PA;其具有酸/碱两种水解方法,其中酸水解过程中主要以水解酰胺键与破坏六氢三嗪环为主,而碱水解过程中主要以水解酰胺键为主;TAHT-PA具有替代传统固化剂的潜力,通过调节DDM与TAHT-PA的比例,可调整固化物的热性能、力学性能与降解性能。Hexahydrotriazine derivative with secondary amine group(TAHT-PA) was obtained by the reaction of 1,3,5-triacryloylhexahydrotriazine(TAHT)as raw material with n-propylamine. A series of epoxy resin cured products were prepared by using it as curing agent for epoxy resin and mixing with 4, 4’-diaminophenylmethane(DDM)in a specific mass ratio. The molecular structure of TAHT-PA was determined by infrared spectrum,hydrogen nuclear magnetic spectrum and carbon nuclear magnetic spectrum,and the hydrolysis mechanism was discussed. At the same time,the thermal,mechanical and degradation properties of epoxy cured products were also studied,and the mechanism of its acid/alkali hydrolysis method was explored. The research results showed that TAHT-PA was successfully prepared. It had two hydrolysis methods of acid/alkali,in which the acid hydrolysis process mainly hydrolyzed the amide bond and destroyed the hexahydrotriazine ring,while the alkali hydrolysis process mainly hydrolyzed the amide bond. TAHT-PA had the potential to replace the traditional curing agent,and by adjusting the ratio of DDM and TAHT-PA,the thermal,mechanical and degradation properties of the cured products could be adjusted.

关 键 词：可降解环氧树脂 六氢三嗪衍生物 降解性能 降解机理 

分 类 号：TQ433.4[化学工程]