环氧-丙烯酸酯混杂光固化体系的研究  

Studies on Epoxy-acrylate Hybrid UV-cure System

作　　者：肖善强[1] 陈其道[1] 陈明[1] 洪啸吟[1] 

机构地区：[1]清华大学化学系,北京100084

出　　处：《高等学校化学学报》2002年第9期1797-1800,共4页Chemical Journal of Chinese Universities

基　　金：国家自然科学基金 (批准号 :2 0 0 740 2 1)资助

摘　　要：研究环氧 -丙烯酸酯混杂光固化体系中引发剂的协同作用 ,证实混杂光固化过程中自由基引发剂对阳离子引发剂二苯基碘盐的增感作用 .混杂光固化膜具有优良的机械性能 ,其抗冲击性能、抗弯曲性能及硬度优于单纯的阳离子体系固化膜 ,与自由基体系固化膜性能接近 ;混杂光固化膜的玻璃化转变温度高于自由基体系固化膜 ;它的耐溶剂性能优异 ,耐丙酮擦拭次数比自由基固化膜高 2 5倍以上 ,比阳离子固化膜高3 .5倍 .这可能是由于混杂光固化过程中形成的 IPN结构造成的 。We studied an epoxy\|acrylate hybrid UV\|cure system and demonstrated that the diaryliodonium salt can be sensitized by the free radical photo\|initiators. The cured product of hybrid UV\|cure system has better mechanical properties, such as hardness, bending strength, impact strength, etc., than those of the cationic product. The glass transition temperature (\%T\%\-g) of hybrid\| cured product is higher than that of the free\|radical product. The solvent\|resistance (double acetone rubs) of hybrid UV cured product is much higher than those of either free\|radical product or cationic product. The excellent performance was attributed to the formation of interpenetrating polymer network (IPN), which was demonstrated by dynamic viscoelastic spectra and scanning electron microscope (SEM).

关 键 词：混杂聚合 紫外光固化 互穿网络聚合物 环氧树脂 丙烯酸酯 固化膜 结构 性能 

分 类 号：O633.13[理学—高分子化学] O632.52[理学—化学]