聚硅氧烷环氧丙烯酸酯的制备  

Preparation of polydimethylsiloxane epoxy acrylate

作　　者：纪建业 潘丽娟 叶锦香 林成威 马昭凯 陈梓帆 刘若玲 葛建芳[1] JI Jianye;PAN Lijuan;YE Jinxiang;Lin Chengwei;MA Zhaokai;CHEN Zifan;Liu Ruoling;GE Jianfang(College of Chemistry and Chemical Engineering,Zhongkai University of Agriculture and Engineering, Guangzhou 510225, China;College of Food Science and Technology, Zhongkai University of Agriculture and Engineering, Guangzhou 510225, China)

机构地区：[1]仲恺农业工程学院化学化工学院,广东广州510225 [2]仲恺农业工程学院轻工食品学院,广东广州510225

出　　处：《仲恺农业工程学院学报》2020年第3期56-63,共8页Journal of Zhongkai University of Agriculture and Engineering

基　　金：广东省科技计划(2015B090925022,2016A010103037)资助项目。

摘　　要：为探究制备聚硅氧烷环氧丙烯酸酯(Polydimethylsiloxane epoxy acrylate,PESA)的最佳反应条件,以双端环氧改性聚硅氧烷(Poly(diphenylsiloxane)with two terminal epoxy bonds,EPDMS)、丙烯酸(Acrylate,AA)为主要原料,在催化剂作用下,通过EPDMS与AA的酯化反应,制备了PESA.通过环氧值滴定法测定EPDMS中环氧基的转化率,探究了催化剂种类、反应温度、反应时间、催化剂用量和环氧基和AA的摩尔配比对EPDMS中环氧基转化率的影响;采用傅里叶红外光谱(Fourier transform infrared spectrum,FT-IR)和核磁共振氢谱(Nuclear magnetic resonance,1H-NMR)对加成产物的结构进行表征.结果表明,成功制备了PESA,其最佳反应条件为以四乙基溴化铵为催化剂,反应时间4 h、反应温度110℃、催化剂用量1.0%(以EPDMS质量计)和环氧基与AA摩尔配比1.04∶1.00,此时环氧基的转化率达到99.81%.To investigate the optimal reaction conditions for the preparation of photosensitive polydimethylsiloxane epoxy acrylate(PESA),the PESA was synthesized through the addition reaction of poly(diphenylsiloxane)with two terminal epoxy bonds(EPDMS)and Acrylate(AA)under catalyst of addition.The conversion of epoxy groups in EPDMS was determined by means of measuring the mass fraction of epoxy groups using epoxy titration method.Then,the effects of catalyst type,reaction time,reaction temperature,catalyst dosage,and molar ratio of epoxy and AA on the conversion ratio of epoxy groups were investigated.By fourier transform infrared spectrum(FT-IR)and nuclear magnetic resonance(1H-NMR),the structure of the products were characterized.It showed that the PESA was synthesized successfully,the optimal reaction conditions was using tetraethyl ammonium bromide as reaction catalyst,and the reaction time of 4 h,reaction temperature of 110℃,Catalyst dosages of 1.0%(relative to quality of EPDMS),and molar ratio of epoxy and AA of 1.04∶1.00.The conversion rate of epoxy groups in EPDMS was 99.81%.

关 键 词：聚硅氧烷环氧丙烯酸酯(Polydimethylsiloxane epoxy acrylate PESA) 环氧基 加成反应 转化率 

分 类 号：J653[艺术—音乐]