高能球磨法对水相介质中微米α-Al_2O_3分散性能的影响

Effect of high energy ball milling on dispersion of α-Al_2O_3 micro-powders in water suspension

采用高能球磨与化学分散剂分散相结合的方法,研究了球磨工艺参数及分散剂种类对微米α-Al2O3粉体分散性能的影响,探讨了配制稳定的微米α-Al2O3抛光液的最佳工艺条件。研究结果表明,球磨对微米α-Al2O3的分散有较好的促进作用,若加入分散剂共同进行球磨,在一定的工艺参数下,可以获得良好的分散效果。在球料比为10∶1,pH值为10.5,球磨机转速300r/min的条件下,得到均匀稳定的微米α-Al2O3分散液的最佳分散工艺为:球磨时间60min,SHP作为分散剂且质量分数为1%。

Combing high-energy ball milling with dispersing agent,the effects of ball milling parameters and kinds of dispersing agent on the dispersion stability of α-Al2O3 micro-powders were studied in this article.The best technological condition to prepare stable micro α-Al2O3 polishing fluid was also researched.The results show that ball milling can better promote the dispersion of α-Al2O3 micro-powders.On the interaction of ball milling and dispersing agent,better dispersion effect can be acquired on the condition of certain parameters.The optimal dispersing condition was 10 to 1 ball to powder weight ratio,pH=10.5,rotation speed of ball milling 300r/min,ball milling time 60min and SHP 1%.