新型水性紫外光固化聚氨酯丙烯酸酯的制备及性能  

Preparation and Properties of Novel UV-Curable Waterborne Polyurethane-Acrylates

作　　者：张文君[1] 张海召[1] 杨永登[1] 王家喜[1] 

机构地区：[1]河北工业大学化工学院高分子科学与工程系,天津300130

出　　处：《涂料工业》2016年第8期58-63,共6页Paint & Coatings Industry

摘　　要：以对乙烯基苯磺酸催化季戊四醇和丙烯酸反应，制备出不同羟基含量的季戊四醇丙烯酸酯混合物。进一步与由异佛尔酮二异氰酸酯与聚乙二醇合成的-NCO封端的聚氨酯预聚物反应，得到水性紫外光固化聚氨酯丙烯酸酯。用FT-IR和1H-NMR表征了产物的结构，讨论了反应的配料比对酯化反应转化率及最终光固化树脂性能的影响。所制备的水性聚氨酯丙烯酸酯光固化速度快、硬度高。当催化剂对乙烯基苯磺酸用量为4％，丙烯酸与季戊四醇物质的量比为3．2：1时，最终得到的聚氨酯丙烯酸酯光固化涂膜的综合洼能最佳。The UV-curable waterborne polyurethane-acrylates have been prepared by re- action of pentaerythritol acrylates having different content of hydroxyl group, which is obtained by esterification of pentaerythritol with acrylic acid at the presence of p-vinyl benzene sulfonic acid, with the --NCO terminated polyurethane prepolymer prepared by reaction of isophorone diisocyanate with polyethylene glycol. The obtained products are characterized by FT-IR and I H-NMR. The effect of different molar ratio on the esterification conversion and properties of the cured films are discussed. The obtained waterborne polyurethane-acrylates can be cured quickly to form a film with good hardness. The comprehensive performance of the cured film is optimized when the content of p-vinyl benzene sulfonic acid is 4% and the molar ratio of acryl- ic acid to pentaerythritol is 3.2：1.

关 键 词：紫外光固化 季戊四醇 丙烯酸 水性聚氨酯丙烯酸酯 

分 类 号：TQ630.43[化学工程—精细化工]