硅酸锂/钠-硅丙乳液复合防护涂层的设计与性能分析  

Design and performance analysis of protective lithium/sodium silicate-silicone-acrylate emulsion composite coating

作　　者：巫华婷 徐意[2] 丁新更[1] 杨辉[1] 汪海风[2] 

机构地区：[1]浙江大学材料科学与工程学院,浙江杭州310027 [2]浙江大学浙江加州国际纳米技术研究院,浙江杭州310058

出　　处：《新型建筑材料》2016年第9期62-65,共4页New Building Materials

基　　金：国家863计划项目(2015AA034701);科技部科技支撑项目(2014BAL03B01)

摘　　要：采用溶胶-凝胶法,设计了无机硅酸盐-硅丙乳液-硅烷偶联剂三元体系,制备了金属表面复合防护涂层。研究了三元体系中3种组分的水解过程和硅烷偶联剂的改性作用,结果表明:硅烷偶联剂KH560的加入促进了复合体系中Si—O—Si网络结构的生成。调整硅酸盐与硅丙乳液的配比测试了复合涂层的性能,无机硅酸盐与硅丙乳液的复合可以明显改善涂层的成膜性和耐腐蚀性,硅丙乳液加入量约为40%时,复合涂层的性能良好。In order to prepare the protective composite coatings on steel bases,a three elements system was designed by sol- gel method with inorganic silicate,silicone-acrylate emulsion and silane coupling agent （SCA）. The hydrolytic processes of three elements in the system, as well as the effects of SCA on the system are studied. Results indicate that KH560 can improve the structure of Si-O-Si network. The properties of composite coatings were evaluated with the proportion of silicate and silicone- acrylate emulsion changing,which show that composite with silicate and emulsion can improve the mechanical properties and corrosion resistance. When the content of the emulsion is 40%,the coating has good properties.

关 键 词：水性涂料 硅酸锂 有机硅 有机-无机复合 耐腐蚀 

分 类 号：TU556.169[建筑科学—建筑技术科学]