耐腐蚀水性铝颜料的制备及表征  

Preparation and Characterization of Corrosion Resistant Aluminum Pigment for Waterborne Systems

作　　者：闫丽伟 司政凯 张梦 苏向东 曹林方 陈晓飞 江慧 张燕黎 王巍[2] 刘燕刚[2] Yan Liwei;Si Zhengkai;Zhang Meng;Su XiangDong;Cao Linfang;Chen Xiaofei;Jiang Hui;Zhang Yanli;Wang Wei;Liu Yangang(Henan Xingan New Building Materials Co.,Ltd.,Zhengzhou 450199,China;Shanghai Jiaotong University Institute of Fine Chemicals,Shanghai 200240,China;Henan Mintai Real Estate Co.,Ltd.,Zhengzhou 450044,China)

机构地区：[1]河南兴安新型建筑材料有限公司,郑州450199 [2]上海交通大学精细化工研究所,上海200240 [3]河南民泰置业有限公司,郑州450044

出　　处：《涂料工业》2020年第4期31-36,共6页Paint & Coatings Industry

基　　金：智汇郑州·1125聚才计划(No.2015XT005)。

摘　　要：为了提高铝颜料在水性涂料中的耐腐蚀性能,以正硅酸乙酯(TEOS)为前驱物,通过溶胶-凝胶反应在铝颜料表面形成了一层致密的二氧化硅包覆薄膜,通过优化固含量、溶剂种类及TEOS的用量,提高铝颜料的耐碱性。利用扫描电镜、刮板试验、接触角测试、析氢实验进行表征,结果表明:以无水乙醇为溶剂,铝金属颜料固含量为10%,升温至50℃后,逐滴加入6 g TEOS,再升温至80℃,该条件下制备的SiO2膜包覆后的铝颜料具有优异的耐碱性,同时表面性能由疏水性转变成亲水性,对铝颜料起到了很好的保护作用。In order to improve the corrosion resistance of aluminum pigment in waterbased coatings,a densed silica coated film was formed on the surface of aluminum pigment by sol-gel process with TEOS as the precursor. The alkali resistance of aluminum pigment was improved by optimizing the solid content,varities of solvents and TEOS dosage,and was characterized by SEM,scraper test,contact angle and hydrogen evolution. The optimum process conditions were obtained when using absolute ethanol as the solvent,the solid content of aluminum pigment 10%,heated to 50 ℃ firstly,then incorporation of 6 g TEOS dropwise,and heated to 80 ℃ again. The results showed that the surface properties of aluminum pigment after coating changed from hydrophobic to hydrophilic,with excellent weak alkali resistance,which played a good role in the protection of aluminum pigment.

关 键 词：铝颜料 包覆 SIO2薄膜 耐腐蚀性 水性涂料 

分 类 号：TQ624[化学工程—精细化工]