TiO_2/SiO_2复合涂层光致亲水性及其机理研究  

Hydrophilicity and Hydrophilic Mechanism of TiO_2/SiO_2 Composite Coatings

作　　者：付文[1] 曾青华[2] 王丽[2] 

机构地区：[1]茂名学院化工与环境工程学院,广东茂名525000 [2]华南理工大学化学与化工学院,广州510640

出　　处：《涂料工业》2010年第11期11-14,共4页Paint & Coatings Industry

基　　金：茂名学院青年创新人才培育项目(NO.203611)

摘　　要：以钛酸四丁酯、正硅酸乙酯为前驱体,冰醋酸为水解抑制剂,用溶胶-凝胶法制备了纳米TiO2/SiO2复合粒子。将复合粒子添加到醇酸清漆中,制备出自清洁涂层。研究表明:少量SiO2掺杂在一定程度上抑制了TiO2的晶型转变和晶粒长大,改善了复合涂层的亲水性。利用荧光光谱对亲水性机理进行了验证。Nano TiO2/SiO2 was prepared by sol - gel process using tetraethylorthosilicate and tetrabutylorthotitanate as precursors and glacial acetic acid as the depressor. The self - clean coatings were prepared by adding the compound particles into the alkyd resin with a certain proportion. Experimental results indicated that small amount of SiO2 can inhibit crystal transformation and growth of the TiO2 , then improve the photoinduced hydrophilicity of the compound coatings. The hydrophilic mechanism was verified by fluorescence spectra.

关 键 词：TIO2/SIO2 溶胶-凝胶法 涂层 亲水性 

分 类 号：TQ630.7[化学工程—精细化工]