氧化铝粉末胶体悬浮液的电动性能的研究  

STUDY ON ELECTROKINETIC PROPERTIES OF COLLOIDAL α-ALIMINA POWDERS IN AQUEOUS SUSPENSION

作　　者：许珂敬[1] 田贵山[1] 杨新春[1] 张建阔[1] 

机构地区：[1]山东理工大学材料学院,淄博255041

出　　处：《中国陶瓷工业》2002年第5期22-25,共4页China Ceramic Industry

基　　金：山东省科技基金项目资助 (编号 :0 1 2 0 60 1 0 6)

摘　　要：利用BDL -B型表面电位仪测试了在不同条件下氧化铝粉末的电动性能。着重研究了不同结构的阴离子聚合物分散剂对悬浮液中颗粒间的静电斥力和空间斥力的影响。研究结果表明 ,添加 1.2 5wt%的亲水比m∶n=30∶70的甲基聚丙烯酰铵 ,且将α -Al2 O3悬浮液的pH值控制在 4 .5左右或 9.0左右时均能使颗粒间具有较大的静电斥力和最大的空间斥力 。The electrokinetic properties of th α-Alumina powder are determined using Model BDL-B surface Zeta-sizer.The effects of anionic polymer dispersant with different structures on the electrostatic and steric repulsion forces between particles in the aqueous suspension are mainly studied.The results reveal that the largest electrostatic and steric repulsion forces between particles are obtained by adding 1.25wt% copolymer of methyl polyacrylete and ammonium polyacrylate with hydrophilic ratio m∶n=30∶70 and controlling the pH values of about 4.5 or 9.0 in the suspension,and the suspension is constantly disperse.

关 键 词：氧化铝粉末 胶体悬浮液 电动性能 研究 Zeta-电位 聚合物分散剂 亲水比 陶瓷粉末 

分 类 号：TQ174[化学工程—陶瓷工业]