可UV固化的稳定硅溶胶的制备及其应用  

Preparation and Application of UV-Curable Stable Silica Sols

作　　者：赵磊[1] 鲁文杰[1] 

机构地区：[1]五邑大学化学与环境工程学院,广东江门529020

出　　处：《涂料工业》2012年第4期56-58,66,共4页Paint & Coatings Industry

摘　　要：在自制的"凝胶抑制剂"存在下,用正硅酸乙酯和γ-(甲基丙烯酰氧)丙基三甲氧基硅烷为前驱体,丙烯酸羟乙酯为表面修饰剂,在酸性条件下发生共水解-缩合反应,制得可UV固化的有机/无机杂化聚合物(稳定硅溶胶),在60℃干燥箱中贮存28 d未发生凝胶现象。TEM测试结果表明:该杂化聚合物包含微米尺寸的团聚颗粒和纳米颗粒。光固化涂膜性能测试表明:含纳米颗粒的稳定硅溶胶能明显改善涂膜的柔韧性、附着力和硬度。A UV -curable organic/inorganic hybrid polymer（ stable silica sol） was prepared with tet- raetyl orthosilicate and 3 - trimethoxysilyl - propy - methacrylate and acidic catalyst and hydrolyzed and condensed with 2 - hydoxyethyl acrylate, in the presence of self - made＂ gel inhibitor＂ as the precursors, which did not show any gel when stored for 28 days in 60 ℃ drying cabinet. The TEM examination showed that the hybrid polymers consisted of micro - sized agglomeration particles and nano - sized particles. The properties test of cured film showed that modified silica sols prove the flexibility, adhesion and hardness of the which consisted of nano particles could significantly imfilm.

关 键 词：光固化 稳定硅溶胶 凝胶抑制剂 

分 类 号：TQ637.83[化学工程—精细化工]