Investigation of the structuring in the sol-gel systems based on tetraethoxysilane

被引：12
|
作者：
Khamova, T. V. [1 ]
Shilova, O. A. [1 ]
Golikova, E. V. [1 ]
机构：
[1] Russian Acad Sci, Grebenshcikov Inst Silicate Chem, St Petersburg 199155, Russia
来源：
GLASS PHYSICS AND CHEMISTRY | 2006年 / 32卷 / 04期
基金：
俄罗斯基础研究基金会;
关键词：
D O I：
10.1134/S1087659606040092
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：
The kinetics of change in the dynamic and structural viscosity of a number of silica sols based on tetraethoxysilane, including sols doped with aluminum and cobalt nitrates, is investigated. The results obtained are analyzed in the framework of the Derjaguin-Landau-Verwey-Overbeek theory. It is revealed that structural forces make a considerable contribution to the stability and structuring processes in these systems. The structuring in a rapidly gelating homogeneous heterophase dispersion formed by finely dispersed alpha-Al2O3 particles in the silica sol doped with aluminum and cobalt nitrates is examined, and the assumptions regarding the mechanism of the structuring processes occurring in this system are made.
引用
收藏
页码：448 / 459
页数：12
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