超细重质碳酸钙表面改性的研究

叙述了重质碳酸钙 (GCC ,简称重钙 )在介质搅拌磨中的表面改性过程及改性重钙的应用研究。应用两种表面改性剂进行了重钙表面性质研究 ,并采用了比表面积测定、接触角测定以及液体润湿性分析等测试方法 ,定性和定量地检测了经改性的重钙粉体。实验及研究结果表明 ,介质搅拌磨中机械化学作用对重钙改性起着积极的作用 ,重钙颗粒得到良好的疏水化改性 ,并使得重钙的粒度减小、比表面积增大 ,提高了重钙粉体作为填料的功能性。应用研究亦表明 :改性的超细重钙填充聚丙烯塑料 ,其制品机械性能均好于未处理重钙填充的聚丙烯塑料

RESEARCH ON SURFACE MODIFICATION OF GROUND CALCIUM CARBONATE

The surface modification process of GCC in a stirring mill and the application of the modified GCC are described in this paper The study on the surface property of GCC with two modifiers is done Some measuring methods such as measurement of the specific surface area and contact angle and liquid wetting analysis are used for measuring the modified GCC powder qualitatively and quantitatively The results indicate that both AS and AA chemical adsorption occur on the surface of GCC considering the mechano chemical reaction,and the reaction made the filler particle size smaller and the filler specific surface area bigger