摘要
以聚乙二醇(PEG-400)为软段,以丙烯酸羟乙酯(HEA)和2,4-甲苯二异氰酸酯(TDI)为硬段,采用两步法合成聚氨酯丙烯酸酯(PUA),并研究其合成条件及力学性能。FTIR及~1H-NMR测试结果表明成功制备出PUA。实验结果表明,PUA合成的最佳条件为:第1步,反应温度为75℃,反应时间为3 h;第2步,反应温度为45℃,反应时间为5 h;阻聚剂的最佳质量分数为0.5%;将活性稀释剂1,6-己二醇二丙烯酸酯(HDDA)与三羟甲基丙烷三丙烯酸酯(TMPTA)按照质量比为1:1的比例加入PUA中,固化膜的凝胶率最高且综合性能优异;选用复合光引发剂体系时,固化膜的固化速率最高,其最佳质量分数为3%。
Ultraviolet Curable Polyurethane Acrylate(PUA)was prepared with two-step method by usingPoly(ethylene glycol)-400(PEG-400)as the soft segment,with Ethylene glycol monoacrylate(HEA)and Toluene-2,4-diisocyanate(TDI)as the hard segment.FTIR and H-NMR test result indicated the successful preparation ofPUA.The synthesis conditions and mechanical properties were studied.The experimental results indicated that theoptimum synthetic condition in the first step was75℃,3h,while45℃,5h was the best condition for the secondstep.The preferred mass fraction of the polymerization inhibitor was0.5%.1,6-Hexanediol diacrylate(HDDA)andTrimethylolpropane triacrylate(TMPTA)with a mass ratio of1:1being added into the PUA.Under this condition,the cured films had the highest gel fraction and excellent overall performance.In addition,using the compoundphotoinitiator system made the coating to be of the highest curing rate and the optimal mass fraction was3%.
作者
温佳佳
王迪
刘兴海
黄驰
黎厚斌
WEN Jiajia;WANG Di;LIU Xinghai;HUANG Chi;LI Houbin(School of Printing and Packaging,Wuhan University,Wuhan 430079,China)
出处
《包装学报》
2017年第3期65-71,共7页
Packaging Journal
作者简介
温佳佳（1993-），女，河南洛阳人，武汉大学硕士生，主要研究方向为UV固化涂料，E-mail：1556710803@qq.com;通信作者：刘兴海（1978-），男，湖北襄阳人，武汉大学副教授，主要从事智能包装方面的教学与研究，E-mail：liuxh@whu.edu.cn
