EFFECT OF AGING MEDIA ON GEL STRUCTURE AND MONOLITHICITY

被引：4

作者：

CHOU, KT ^{[1
]}

LEE, BI ^{[1
]}

机构：

[1] CLEMSON UNIV,DEPT CERAM ENGN,CLEMSON,SC 29631

来源：

JOURNAL OF MATERIALS SCIENCE | 1992年 / 27卷 / 02期

关键词：

D O I：

10.1007/BF00543946

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Silica gels were prepared from direct reaction of tetraethyloxysilane (TEOS) with water under acidic conditions. Different molar ratios of water to TEOS, and various ageing media were investigated to improve monolithicity. The transformation of the gel as a function of temperature was monitored by Fourier transform-infrared spectroscopy. The gel properties influenced by different ageing media were determined by measurement of density and specific surface area. The results show that by ageing wet gel in different solutions, the microstructure of a gel is changed, and also the monolithicity of the dried gel is improved.

引用

页码：520 / 526

页数：7

共 17 条

[1] ALCOHOL IS AN UNNECESSARY ADDITIVE IN THE SILICON ALKOXIDE SOL-GEL PROCESS [J].