端羧基超支化聚(胺-酯)合成及对环氧树脂的增韧  

The synthesis of hyperbranched poly(amine-ester)s with terminal carboxyl groups and toughening modification for epoxy resin

作　　者：宋家乐[1] 薛旋 彭菲[1] 冯国平 张栋梁 李炜光[2] Song Jiale;Xue Xuan;Peng Fei;Feng Guoping;Zhang Dongliang;Li Weiguang(College of Material Science and Engineering,Chang an Umverslty,X1 an 710061,China;School of Highway,Chang＇an University,Xi＇an 710064,China)

机构地区：[1]长安大学材料科学与工程学院,陕西西安710061 [2]长安大学公路学院,陕西西安710064

出　　处：《中国胶粘剂》2018年第10期1-4,9,共5页China Adhesives

基　　金：长安大学中央高校基本科研业务费专项资金资助项目(310821162009);长安大学大学生创新训练计划项目(201710710169)

摘　　要：基于迈克尔加成、酯交换和巯基-烯点击化学反应,合成了第三代端羧基超支化聚(胺-酯),对其结构进行表征,并将其用于环氧/甲基四氢苯酐固化体系的增韧研究。研究结果表明:该端羧基超支化聚合物G3可加快固化反应;当添加w(G3)=3%(相对于环氧树脂质量而言)时,固化物在保持弯曲强度和耐热性不下降的前提下,冲击强度显著提高。The third generation hyperbranched poly （amine-ester）s with terminal carboxyl groups were synthesized by Michael addition reaction, transesterification and thiol-ene click reaction, which were applied to epoxy resin for toughening modification. The results showed that the hyperbranched polymer G3 can accelerate the curing reaction; when adding 3% mass fraction of hyperbranched polymer, cured polymer keeping the flexural strength and heat resistance without falling, the impact strength increased significantly.

关 键 词：超支化聚(胺-酯) 巯基-烯点击化学反应 环氧树脂 增韧 

分 类 号：TQ322.4[化学工程—合成树脂塑料工业]