UV及潮气双重固化硅树脂的制备及性能研究  

Preparation and performance of UV and moisture cured silicone resins

作　　者：蔡亮 金晨 夏远乾 呼雪 陈昱 许银根 李冰林 瞿志荣[1,2] 董红 伍川[1,2] Cai Liang;Jin Chen;Xia Yuanqian;Hu Xue;Chen Yu;Xu Yingen;Li Binglin;Qu Zhirong;Dong Hong;Wu Chuan(Key Laboratory of Organosilicon Chemistry and Material Technology,Ministry of Education,College of Material,Chemistry and Chemical Engineering,Hangzhou Normal University,Hangzhou 311121;Collaborative Innovation Center for Fluorosilicon Fine Chemical and Materials Manufacturing,Hangzhou 311121;Ningbo Runhe High-tech Materials Co.,Ltd.,Ningbo 315600)

机构地区：[1]杭州师范大学材化学院,有机硅化学及材料技术教育部重点实验室,杭州311121 [2]氟硅精细化学品与材料制造协同创新中心,杭州311121 [3]宁波润禾高新材料科技股份有限公司,宁波315600

出　　处：《化工新型材料》2024年第10期131-138,共8页New Chemical Materials

基　　金：宁波市重大科技任务攻关项目(2021Z074)。

摘　　要：以含氢MQ硅树脂(HMQ)和1,2-环氧-4-乙烯基环己烷(VCHO)为原料,2,6-二叔丁基-4-甲氧基苯酚(BHT)为抗氧化剂,无水甲苯为溶剂,在铂的乙烯基络合物催化作用下通过硅氢加成反应制备得到含有脂环族环氧官能团和硅羟基的有机硅树脂,通过核磁共振波谱(NMR)、傅里叶红外光谱(FT-IR)以及凝胶渗透色谱(GPC)等手段对树脂结构进行了表征。对合成的脂环族环氧官能化硅树脂进行UV及潮气双重固化实验,探究了UV光照时间、脂环族环氧基含量以及Si-OH含量等因素对硅树脂材料性能的影响。结果表明:当UV光照时间为20s时,制备得到的双固化树脂材料的综合性能良好,凝胶率大于80%、吸水率小于2.4%、水接触角大于111.2°、氮气中5%失重温度大于370℃、空气中5%失重温度大于340℃、玻璃化转变温度(T_(g))大于17℃、铅笔硬度大于4H(3d)。Using hydrogen-containing MQ silicone resin(HMQ)and 1,2-epoxy-4-vinylcyclohexane(VCHO)as raw materials,2,6-di-tert-butyl-4-methoxyphenol(BHT)as anti-oxidant and anhydrous toluene as the solvent,organosilicon resins containing alicyclic epoxy functional groups and silicon hydroxyl groups were prepared through hydrosilylation reaction under the catalysis of a platinum vinyl complex.The nuclear magnetic resonance spectrum(NMR),Fourier transform infrared spectroscopy(FT-IR)and gel permeation chromatography(GPC)were used to characterize the structures of the resins.UV and moisture dual curing experiments were carried out on the synthesized cycloaliphatic epoxy functionalized silicone resin,and the influence of factors such as UV irradiation time,cycloaliphatic epoxy group content and Si-OH content on the properties of the silicone resin materials were explored.The results showed that when the UV irradiation time was 20 s,the comprehensive performance of the prepared dual-cured resin material achieved excellent comprehensive performance with a gel rate greater than 80%,the water absorption rate less than 2.4%,the water contact angle greater than 111.2°,the 5%weight loss temperature in nitrogen gas greater than 370℃,the 5%weight loss temperature in air greater than 340℃,the glass transition temperature T_(g) greater than 17℃,and the pencil hardness value higher than 4H.

关 键 词：UV固化 潮气固化 有机硅树脂 环氧树脂 硅氢加成 

分 类 号：TQ437.6[化学工程]