酯交换反应制备端羟基聚氨酯预聚物的研究  

Research of ester-exchange reaction to prepare hydroxyl-terminated polyurethane lowpolymer

作　　者：韩如冰[1] 钟兴发[1] 于杨[1] 鹿桂芳[1] 

机构地区：[1]哈尔滨理工大学化学与环境工程学院,黑龙江哈尔滨150080

出　　处：《化学工程师》2010年第6期1-4,共4页Chemical Engineer

基　　金："国家大学生创新性实验计划"资助项目(81021410)

摘　　要：本文介绍了二苯基甲烷二氨基甲酸酯与聚酯多元醇的酯交换反应,考察了催化剂、温度、时间对反应的影响,合成了分子量达21500的羟基封端的聚氨酯预聚体,并将该预聚物用于环氧树脂灌封胶中,收到良好的增韧效果。The transesterification has been studied by diphenyl methane dicarbamic acid ester with polyester polyol.The influence of catalyst,temperature and time on the reaction were described, the hydroxy-terminated polyurethane lowpolymer was synthesized which molecular weight up to 21,500,the lowpolymer was used into e- poxy resin potting. It has a good toughening effect.

关 键 词：氨基甲酸酯 酯交换 聚氨酯 环氧树脂 增韧 

分 类 号：O621.25[理学—有机化学]