氧化铝粉体在水悬浮液中的分散特性研究

硅酸盐通报 ›› 2009, Vol. 28 ›› Issue (6): 1271-1275.

氧化铝粉体在水悬浮液中的分散特性研究

唐兵华;罗庆平;黄云

中国工程物理研究院电子工程研究所,绵阳,621900;西南科技大学材料科学与工程学院,绵阳,621000

出版日期:2009-12-15 发布日期:2021-01-15

Study on the Dispersed Characters of Alumina Powders in Aqueous Suspension

TANG Bin-ghua;LUO Qing-ping;HUANG Yun

Online:2009-12-15 Published:2021-01-15

摘要/Abstract

摘要： 采用Zeta电位表征Al_2O_3粉在悬浮液中的分散特性,研究了超声波分散时间、不同粒度Al_2O_3粉以及分散剂六偏磷酸钠的浓度和Al_2O_3粉体悬浮液pH值对Al_2O_3粉体Zeta电位的影响.研究结果表明:Zeta电位绝对值随超声波作用时间发生明显变化,在一定条件下存在一个最佳分散时间为4～6 min;悬浮液中Al_2O_3粉体颗粒的粒度对悬浮液的Zeta电位有重要影响;在Al_2O_3粉体悬浮液中添加分散剂六偏磷酸钠,Zeta电位随其浓度发生变化,存在一个最佳浓度0.5%;在不同pH值下,Al_2O_3粉体悬浮液的Zeta电位不同,在碱性条件下,粉体的分散性较好,且碱性越强,分散性越好.

关键词: Al_2O_3粉;悬浮液;Zeta电位;分散

Abstract: The dispersing characteristic of Al_2O_3 powders in suspension was investigated by Zeta potential. The influence of different dispersing conditions, such as different ultrasonic dispersing time, different granularity of Al_2O_3 powders, different dispersant concentration and different pH value of Al_2O_3 powders suspension, on the Zeta potential of Al_2O_3 powders was studied. Results indicate that the absolute value of Zeta potential of Al_2O_3 powders varied with these different dispersing conditions, and there was a best dispersing time range of 4-6 min and a best dispersant concentration of 0.5% while the Al_2O_3 powders dispersed well, and the absolute value of Zeta potential increased with the pH value in alkalescence condition.

Key words: alumina powder%suspension%Zeta potential%dispersion

中图分类号:

TD050

唐兵华;罗庆平;黄云. 氧化铝粉体在水悬浮液中的分散特性研究[J]. 硅酸盐通报, 2009, 28(6): 1271-1275.

TANG Bin-ghua;LUO Qing-ping;HUANG Yun. Study on the Dispersed Characters of Alumina Powders in Aqueous Suspension[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2009, 28(6): 1271-1275.