镁铝尖晶石浓悬浮体的制备  

FABRICATION OF THE CONCENTRATED SPINEL SUSPENSION

作　　者：戚凭[1] 陈沙鸥[1] 郝守玉 

机构地区：[1]青岛大学物理系,青岛266071

出　　处：《青岛大学学报（自然科学版）》2000年第2期25-28,共4页Journal of Qingdao University(Natural Science Edition)

摘　　要：制备出固相含量为55vol％，粘度为60mPa．s的镁铝尖晶石悬浮体。镁铝尖晶石的等电点约为pH6。其悬浮体的反常特性源于本身是一种复合氧化物，在pH＞6一侧面悬浮体粘度一直很大，是由于Mg2+离子的屏蔽，在颗粒表面没能形成扩散双电层。在此悬浮体中，[Al（OH）4]-1具有位阻分散剂的作用，柠檬酸脑既是静电型、也是空间住阻型分散剂。The spinel suspension with the solid volume loading 55 vol% and the viscosity 60mPa.s has been fabricated The suspension IEP is about pH6. The some of anormalcharactenstics on the suspension are due to that the spinel is a composite oxide. Thesuspension viscosity is a always high above pH6 because of the shield of Mg2+ ions, whichleads to absence of the double electric layer In the suspension, [Al(OH)4]-1 plays a role of thesteric dispersant, Ammonia citTate is not only steric and also static dispersam.

关 键 词：镁铝尖晶石 悬浮体 粘度 凝胶注膜 制备 陶瓷 

分 类 号：O648.22[理学—物理化学] TQ174.758[理学—化学]