取代脲促进环氧树脂/双氰胺固化体系反应机理  

Study on the Reaction Mechanism of Epoxy Resin/Dicyanamide System

作　　者：张保龙[1] 石可瑜[1] 由英才[1] 周德亮 杜宗杰[1] 黄吉甫[1] 

机构地区：[1]南开大学化学系,吸附分离功能高分子材料国家重点实验室,天津300071

出　　处：《应用化学》1998年第4期95-97,共3页Chinese Journal of Applied Chemistry

摘　　要：The reaction mechanism, reactivities, and apparent activation energies of epoxy/dicyanamide curing system accelerated by C6H5NHCONR2 (R=CH3, n-C4H9, i-C3H7,) werestudied by DSC and GC techniques. The results showed that in reaction of C6H5,NHCONR2with either dicyanamide or epoxy resin there was a dimethylamine released reacting with epoxy resin, giving a tertiary amine, which accelerated the anionic homopolymerization of epoxy resin.The reaction mechanism, reactivities, and apparent activation energies of epoxy/dicyanamide curing system accelerated by C6H5NHCONR2 (R=CH3, n-C4H9, i-C3H7,) werestudied by DSC and GC techniques. The results showed that in reaction of C6H5,NHCONR2with either dicyanamide or epoxy resin there was a dimethylamine released reacting with epoxy resin, giving a tertiary amine, which accelerated the anionic homopolymerization of epoxy resin.

关 键 词：取代脲 环氧树脂 双氰胺 固化反应 

分 类 号：TQ323.5[化学工程—合成树脂塑料工业]