对超重力沉淀法制备的超细二氧化硅以应用于阴极电泳涂料为目的,用硅烷偶联剂在水介质中进行表面改性,并对改性后的超细二氧化硅用TEM(透射电子显微镜)、粒径分析、比表面积测定、热重分析等方式进行表征.结果表明:改性后超细二氧化硅的一些特性和表面性质都发生了变化,可以用该方法对超细二氧化硅进行表面改性以满足阴极电泳涂料应用的特殊需要.
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