摘要：以重晶石粉体为原料, 通过干法、湿法工艺优选, 采用机械力化学法制备TiO₂-重晶石颜料, 讨论干法制备TiO₂-重晶石颜料的工艺条件对复合粉体性能的影响。结果表明, 复合颜料制备的最优工艺条件为复合时间为1.5 h, 钛白粉质量分数为40%, 球料质量比为4∶1, 制备得到的TiO₂-重晶石颜料遮盖力达到钛白粉的80%以上, 并且包覆效果最佳。

关键词：TiO ₂-重晶石颜料;机械力化学法;遮盖力

Abstract：TiO₂-barite pigments were prepared through mechano-chemistry method taking barite powders as raw materials. By comparing the dry and wet process obtained TiO₂-barite composite pigments, dry preparation was determined. The dry preparation of TiO₂-barite pigment process conditions impact on the properties was focused. The results show that the optimum technical conditions are that the recombination time is 1.5 h, the TiO₂ content is 40%, the mass ratio of ball to powder is 4:1. Under these conditions, the hiding power of TiO₂-barite pigments can reach more than 80% of TiO₂ powders and the coating effect is best.

Keywords：barite-TiO₂ pigment; mechano-chemistry method; hiding power