微米α-氧化铝粉体在水相介质中的分散性研究  

Dispersion of Micron-sized α-Alumina Powders in Water Suspension

作　　者：夏保红[1] 孙玉利[1] 左敦稳[1] 赵研[1] 邵雳 吕程昶 刘恒俊 张超[1] 危崇敏 郑锦坤[1] 

机构地区：[1]南京航空航天大学机电学院,江苏南京210016

出　　处：《中国粉体技术》2015年第1期42-45,65,共5页China Powder Science and Technology

基　　金：国家自然科学基金项目;编号:51375237;江苏省自然科学基金项目;编号:1302070B;中国博士后基金项目;编号:2014M551587

摘　　要：针对微米α-氧化铝粉体在水相介质中分散不好的问题,采用单因素法实验研究球磨时间、超声时间对微米α-氧化铝粉体在水相介质中分散性的影响,在此基础上采用正交实验研究分散剂种类、分散剂浓度、悬浮液p H对微米α-氧化铝粉体在水相介质中分散性的影响,用悬浮液的吸光度评价微米α-氧化铝粉体的分散性。结果表明,微米α-氧化铝粉体在水相介质中的最佳分散工艺参数是球磨时间为40 min,超声时间为20 min,分散剂三聚磷酸钠的质量分数为0.5%,悬浮液p H为10。For the problem of micron-sized α-alumina powders dispersed in water suspension,the single factor test was used to study the effect of milling time,ultrasonic time on the dispersion of α-alumina powders in water suspension. The orthogonal test was used to study the effect of dispersant kinds,dispersant concentration and p H of suspension on the dispersion of micron-sized α-alumina powders. Absorbance of suspension was used to evaluate the dispersion of α-alumina powders. The results show the optimal dispersing conditions are that the milling time is 40 min,ultrasonic time is 20 min,mass fraction of sodium tripolyphosphate is0.5% and p H of suspension is 10.

关 键 词：微米α-氧化铝粉体 水相介质 分散性能 吸光度 

分 类 号：TB383[一般工业技术—材料科学与工程]