双键单封端聚氨酯丙烯酸酯大分子单体的合成及表征  

Synthesis and characterization of mono-capped polyurethane-acrylate macromonomer with a vinyl group

作　　者：夏宇正[1] 龙登莲[1] 石淑先[1] 焦书科[1] 

机构地区：[1]北京化工大学碳纤维及功能高分子教育部重点实验室

出　　处：《现代化工》2009年第5期46-49,共4页Modern Chemical Industry

摘　　要：以异佛尔酮二异氰酸酯（IPDI）和聚醚二元醇（PEG）为单体、（甲基）丙烯酸羟乙酯和正丁醇为共封端剂，合成了以双键单封端为主的聚氨酯丙烯酸酯大分子单体。考察了反应条件的影响，对聚氨酯大分子单体进行了表征。结果表明反应温度越高、催化剂用量越大、封端剂的羟基活性越强，预聚反应和封端反应所需时间越短；聚氨酯大分子单体中双键含量随IPDI与PEG摩尔比的增加而增加。Mono-capped polyurethane-acrylate macromonomer with vinyl group is synthesized by the reaction between isophorone diisocyarlate （IPDI） and polyethylene glycol （PEG）, followed by end-capping with fl-hydmxy ethyl acrylate and nbutanol in the presence of dibutyfin dihurate as catalyst. The structure of macromonomer is characterized and the influences from reaction conditions are studied. The results show that the reaction time can be reduced with the increase of catalyst dosage, reaction temperature and reactivity of hydroxyl in the end chain termination agent, and the content of double bond of the is increased with the increase of molar ratio of IPDI and PEG

关 键 词：大分子单体 聚氨酯-丙烯酸酯 合成 单封端 

分 类 号：TQ317[化学工程—高聚物工业]