端羟基苊式乙烯基硅橡胶的制备及性能研究  

Preparation and Properties of Hydroxyl Terminated Vinyl Silicone Rubber

作　　者：葛铁军 张煜欣 何晓峰 GE Tie-jun;ZHANG Yu-xin;HE Xiao-feng(Plastic Engineering Research Center of Shenyang University of Chemical Technology,Shenyang 110142,China;Liaoning Polymer Materials Engineering and Technology Research Center,Shenyang 110142,China)

机构地区：[1]沈阳化工大学材料科学与工程学院塑料工程研究中心,辽宁沈阳110142 [2]辽宁省高分子工程技术研究中心,辽宁沈阳110142

出　　处：《沈阳化工大学学报》2021年第2期146-151,共6页Journal of Shenyang University of Chemical Technology

基　　金：辽宁省重点研发计划指导计划项目(2017304004)。

摘　　要：用苊醌、二苄基甲酮、多乙烯基硅氧烷反应合成一种新型苊式乙烯基硅氧烷,与含氢硅氧烷、铂金催化剂制备了端羟基苊式乙烯基硅橡胶.采用红外光谱(FTIR)、核磁共振氢谱(^(1)HNM R)确定该硅氧烷的苊式结构,用热失重(TGA)、拉伸实验对复合材料进行性能表征.结果表明:当苊式乙烯基硅氧烷份数为2%时,苊式硅橡胶的初始分解温度为433.68℃,常温剪切拉伸强度为2.55 MPa;当苊式乙烯基硅氧烷份数为8%时,苊式硅橡胶的初始分解温度为453.68℃,常温剪切拉伸强度为4.73 MPa,400℃剪切拉伸强度为0.66 MPa.A new type of acenaphthene vinyl siloxane was synthesized by the reaction of acenaphthene,dibenzyl ketone and polyvinylsiloxane.Hydroxy-terminated acenaphthene vinyl silicone rubber was prepared by the reaction of acenaphthene quinone,dibenzylketone and polyvinylsiloxane with hydrogen-containing siloxane and platinum catalyst.The amaranth structure of the siloxane was determined by FTIR and ^(1)H-NMR.The properties of the composites were characterized by thermogravimetric analysis(TGA)and tensile test.The results showed that the initial decomposition temperature of amaranth silicone rubber was 433.68℃and the tensile shear bond strength at room temperature was 2.55 MPa when the proportion of amaranth vinyl siloxane was 2%.When the proportion of amaranth vinyl siloxane was 8%,the initial decomposition temperature of amaranth silicone rubber was 453.68℃,and the tensile shear bond strength was 4.73 MPa at room temperature and 0.66 MPa at 400℃.

关 键 词：端羟基苊式乙烯基硅氧烷 硅氢加成 有机硅 耐热材料 

分 类 号：O634.4[理学—高分子化学]