阳离子光固化聚硅氧烷的制备及性能研究  

Study on Preparation and Properties of Cationic UV-curing Polysiloxane

作　　者：王世崇 徐学智 李少辉 林子谦 吴瑶 邓浩宇 侯阳 向洪平 WANG Shi-chong;XU Xue-zhi;LI Shao-hui;LIN Zi-qian;WU Yao;DENG Hao-yu;HOU Yang;XIANG Hong-ping(Key Laboratory of Functional Soft Condensed Matter,Guangdong Province,School of Materials and Energy,Guangdong University of Technology,510006 Guangzhou,Guangdong)

机构地区：[1]广东工业大学材料与能源学院广东省功能软凝聚态物质重点实验室,广州510006

出　　处：《有机硅材料》2021年第4期1-6,27,共7页Silicone Material

基　　金：国家自然科学基金(201604014,51873043)。

摘　　要：以二甲基二甲氧基硅烷、二苯基二甲氧基硅烷和3-(2,3-环氧丙氧)丙基甲基二乙氧基硅烷为原料,借助在四甲基氢氧化铵催化下的水解-缩聚反应,制得可阳离子光固化的环氧化苯基聚硅氧烷(EP-PMPS);再将EP-PMPS与不同阳离子光引发剂互配,研究了苯基、环氧基含量对其光聚合效率以及光固化制品性能的影响。结果表明:所合成的EP-PMPS与阳离子光引发剂Irgacure-831互配体系的光固化速率快,转化率相对较高,可达到60%以上;适量苯基和环氧基都可在一定程度上提高光固化制品的拉伸强度。A novel cationic UV-curable epoxidized polysiloxane(EP-PMPS)has been prepared by hydrolysis-polycondensation of dimethyldimethoxysilane,diphenyldimethoxysilane and 3-(2,3-epoxy-propoxy)propylmethyldiethoxysilane,with tetramethylammonium hydroxide as the catalyst.Then the obtained EP-PMPS is blended with the different cationic photoinitiators.The effects of phenyl and epoxy groups on the photopolymerization efficiency and the performance of photo-cured products are studied.The results show that when EP-PMPS compounds with cationic photo initiator Irgacure-831,it has a fast curing rate and a relatively high conversion(over 60%).The mechanical strength of the UV-cured silicone can be improved with appropriate amount of phenyl and epoxy groups.

关 键 词：紫外光固化 阳离子光聚合 有机硅材料 环氧化聚硅氧烷 

分 类 号：TQ264.14[化学工程—有机化工]