RHEOLOGY OF ALUMINA SOLS

被引：7
|
作者：
GONZALEZ, C
GUTIERREZ, J
LLORENS, J
GALAN, MI
MANS, C
机构：
[1] Chemical Engineering Department, University of Barcelona, 08028 Barcelona
来源：
JOURNAL OF NON-CRYSTALLINE SOLIDS | 1992年 / 147卷
关键词：
D O I：
10.1016/S0022-3093(05)80700-8
中图分类号：
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Alumina sols were obtained by hydrolysis of aluminium sec-butoxide according to Yoldas method. Peptization was carried out with two different quantities of HCl and at two different temperatures. The four sols obtained were stored at 40-degrees-C, and their rheological behaviour was determined for times to 1 year. Rheological measurements were fitted to a slightly modified Casson model. Evolution of adjusting parameters, yield stress, consistency index and flow index, with aging time, are discussed. Samples with higher HCl give a yield stress from the day of preparation. Samples with lower HCl display a Newtonian behaviour initially and shear thinning behaviour with increasing viscosity with aging time.
引用
收藏
页码：690 / 694
页数：5
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