光固化聚氨酯柔性涂层的制备及应用  

Preparation and application of photocurable polyurethane flexible coatings

作　　者：李时新 张明祖[1] 何金林[1] 倪沛红[1] LI Shixin;ZHANG Mingzu;HE Jinlin;NI Peihong(College of Chemistry,Chemical Engineering and Materials Science,Soochow University,Suzhou 215123,China)

机构地区：[1]苏州大学材料与化学化工学部,江苏苏州215123

出　　处：《功能材料》2024年第12期12001-12006,共6页Journal of Functional Materials

基　　金：国家自然科学基金资助(21975169)。

摘　　要：紫外光(UV)固化涂料是一种环保涂料,具有快速固化成膜等优点。报道了一种基于聚碳酸酯二醇软段,端基为碳碳双键的光固化聚氨酯预聚物,将该预聚物与几种丙烯酸酯活性单体复配,制备了光固化柔性聚氨酯,研究不同配方固化后涂层的性能。对固化后得到的胶膜及涂层的相关性能等进行了测试和比较。结果表明,在含有55%(质量分数)聚氨酯预聚物的涂料中,额外添加15%(质量分数)聚乙二醇(400)二丙烯酸酯,固化后具有良好的柔性和附着力,综合性能好。经湿热老化测试后仍可以保持与聚碳酸酯基材良好的结合力。UV-curable coatings are environmentally friendly coatings with the advantages of rapid curing and film formation.Herein,we reported an UV-curable polyurethane oligomer based on soft segment of polycarbonate diol and carbon-carbon double bond as end group.The photocurable flexible polyurethane was prepared by combining the oligomer with several active acrylate monomers,and the properties of the coatings after curing with different formulations were studied.The results showed that addition of an additional 15wt%polyethylene glycol(400)diacrylate to a coating containing 55wt%polyurethane prepolymer resulted in a film with good flexibility and adhesion,and good performance.After the aging test,it could still maintain good adhesion force with the polycarbonate substrate.

关 键 词：光固化 柔性涂层 聚氨酯 聚碳酸酯二醇 

分 类 号：TQ630.79[化学工程—精细化工]