| 氧化铝粉体在水悬浮液中的分散特性研究 |
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| 引用本文： | 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). |
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| 作者姓名： | 唐兵华 罗庆平 黄云 |
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| 作者单位： | 1. 中国工程物理研究院电子工程研究所,绵阳,621900
2. 西南科技大学材料科学与工程学院,绵阳,621000 |
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| 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.
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| 关 键 词： | Al_2O_3粉 悬浮液 Zeta电位 分散 |
Study on the Dispersed Characters of Alumina Powders in Aqueous Suspension |
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| 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). |
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| Authors: | TANG Bin-ghua LUO Qing-ping HUANG Yun |
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| Affiliation: | TANG Bing-hua1,LUO Qing-ping2,HUANG Yun1(1.Institute of Electronic Engineering in China Academy of Engineering and Physics,Mianyang 621900,China,2.Academy of Materials Science and Engineering,Southwest University of Science and Technology,Mianyang 621000,China) |
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| Abstract: | The dispersing characteristic of Al2O3 powders in suspension was investigated by Zeta potential.The influence of different dispersing conditions,such as different ultrasonic dispersing time,different granularity of Al2O3 powders,different dispersant concentration and different pH value of Al2O3 powders suspension,on the Zeta potential of Al2O3 powders was studied.Results indicate that the absolute value of Zeta potential of Al2O3 powders varied with these different dispersing conditions,and there was a best... |
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| Keywords: | alumina powder suspension Zeta potential dispersion |
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