有机硅改性环氧丙烯酸酯/E-51分子设计混杂光固化涂料的研究  

Hybrid UV-cured coating of molecular designed epoxy acrylate modified silicone/E-51

作　　者：李照磊[1] 高延敏[1] 吕伟刚[1] 宋东坡[1] 

机构地区：[1]江苏科技大学材料科学与工程学院,江苏镇江212003

出　　处：《江苏科技大学学报（自然科学版）》2010年第5期452-456,共5页Journal of Jiangsu University of Science and Technology:Natural Science Edition

摘　　要：基于分子设计的思想,以有机硅改性环氧丙烯酸酯与E-51的共混体系作为成膜物质,1173为光引发剂,聚酰胺为暗固化剂,改性纳米SiO2为填料,再加入其它助剂制备了混杂光固化涂层.通过FT-IR分析了混杂光固化涂料固化过程中存在的反应,用TG和EIS对混杂光固化涂料与有机硅改性环氧丙烯酸酯光固化涂料进行对比,考察了两种涂层的硬度随时间变化的情况.结果表明:混杂光固化涂料在固化过程中既有自由基聚合,又存在官能团的缩聚反应;混杂光固化涂层的耐温性及耐腐蚀性均优于有机硅改性环氧丙烯酸酯光固化涂层;混杂光固化涂层的固化速度以及最终的硬度都要大于有机硅改性环氧丙烯酸酯光固化涂层,很好地解决了有机硅改性环氧丙烯酸酯光固化涂层固化不完全的问题.Based on the idea of molecular design,a hybrid UV-cured coating was prepared with silicone-modified epoxy acrylate blended with E-51 as film-forming substances,1173 as a photoinitiator,PA as a dark initiator,modified nano-SiO2 as filler.The reactions during the curing process were analyzed through FT-IR,and hybrid UV-cured paint and traditional UV-cured coatings were compared by the method of TG,EIS.Change of the hardness with the time was studied.The results show that both free radical polymerization and condensation reaction exist during the curing process of hybrid UV-cured coating,and both temperatureresistance and corrosionresistance are superior to conventional UV-cured coating.Curing speed and ultimate hardness of the hybrid UV-cured coating are superior to conventional UV-cured coating.The problem of incomplete curing during the UV-curing is resolved entirely.

关 键 词：固化不完全 混杂光固化 分子设计 固化速度 

分 类 号：O63[理学—高分子化学]