二氧化钛超细粉末的制备新方法

New Preparation Method of Rutile Type TiO_2 with Hydrolysis Titanium Tetrachloride

随着纳米科技的迅速发展,纳米材料已经越来越多的应用于国民经济、军事及其它高新技术的各个方面。目前,在液相中制备纳米二氧化钛等纳米颗粒现阶段已经较为容易。但是,制备经过高温灼烧的超细粉体材料仍然存在着粉体粒度不够小,分散性能差、生产设备复杂,生产成本较高等诸多缺点。特别是随着粉体粒径的减小,其分散性能越来越差。如何制备出分散性能好、粒径小,生产工艺简单的超细粉体材料仍然是一个需要不断研究的课题。本试验采用液相凝胶法,以低成本的四氯化钛和氨气为原料,经过煅烧,制备了纳米级别的二氧化钛微粉材料。产品粒径10 nm左右,分散性能良好。

Nanometer materials had been widely used in the national economy, military, and high-tech areas. However, the superfine ruffle type of TiO2 was very hard to prepared, because the sinter of the material leaded to the aggregation of the superfine particles. By removed the water which existed between particles and causes of the aggregation, superfine and well dispersed TiO2 nanometer material had been prepared with the emulsion-precipitation method.