有机硅树脂的紫外光固化及其固化膜性能研究  

Study on Curing Process and Performance of UV Curable Polysiloxane Resin

作　　者：马子淇[1,2] 刘伟区[1] 高南[1,2] 孙越[1,3] 

机构地区：[1]中国科学院广州化学研究所,广州510650 [2]中国科学院大学,北京100049 [3]辽宁师范大学,辽宁大连116029

出　　处：《涂料工业》2013年第10期26-31,共6页Paint & Coatings Industry

摘　　要：利用水解缩合的方法,将聚甲基三乙氧基硅烷(PTS)、二甲基二乙氧基硅烷(DDS)和γ-甲基丙烯酰氧基丙基三甲氧基硅烷(KH570)在盐酸(HCl)的催化作用下进行反应,制备出一种可UV固化有机硅树脂预聚物,通过FT-IR、29Si-NMR对预聚物的光固化过程和缩合程度进行了表征;同时研究了固化膜的热性能、表面能、耐水性、耐乙醇性、硬度、附着力等。研究结果表明:紫外光固化30 s后,有机硅预聚物的双键转化率达到了95.89%,UV固化有机硅涂膜失质量5%和15%对应的温度T5%和T15%分别为194.9℃和261.8℃;固化膜的表面能为16.36 mJ/m2。The title UV -curable polysiloxane resin has been synthesized by using polym- ethyl triethoxy silane（ PTS）, 3/-methacryloyl propyl trimethoxyl silane （KH570）, dimethyl- diethoxysilane（DDS） as raw material and HC1 as catalyst. The obtained resin was character- ized by FT- IR, 29Si- NMR, and tested for the thermal properties, surface properties, water resistance, solvent resistance, adhesion, hardness of the cured film. The results showed that the conversation rate of C =C bonds of polysiloxane has reached 95.89% after 30 s UV irradi- ation. The T5% and T15% of polysiloxane were 194. 9 ℃ and 261.8 ℃respectively. The sur- face energy of coating film was 16. 36 mJ/m2.

关 键 词：有机硅 UV固化 涂料 光引发剂 

分 类 号：TQ637.83[化学工程—精细化工]