Gel formation during sol-gel synthesis of silicon dioxide

被引:11
|
作者
Simonenko, E. P. [1 ,2 ]
Derbenev, A. V. [1 ]
Simonenko, N. P. [1 ]
Sevastyanov, V. G. [1 ,2 ]
Kuznetsov, N. T. [1 ,2 ]
机构
[1] Russian Acad Sci, NS Kurnakov Gen & Inorgan Chem Inst, Moscow 119991, Russia
[2] Natl Res Univ, Samara State Aerosp Univ, Samara, Russia
基金
俄罗斯基础研究基金会;
关键词
CERAMIC MATERIALS; COMPOSITES; COATINGS; NANOPARTICLES; ZIRCONIUM; LAYERS; WATER; SIO2;
D O I
10.1134/S0036023615120220
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
The effects of water and catalyst (formic acid) concentrations and temperature on tetraethoxysilane hydrolysis, followed by gel formation, have been studied. The catalyst concentration is found to have a stronger effect on the variation rate of dynamic viscosity of the system compared to the effect of water concentration. The thermal behavior of the thus-prepared xerogels has been studied in an air flow; distinctions have been noticed for samples whose initial dispersion-bound systems were formed at room temperature.
引用
收藏
页码:1444 / 1451
页数:8
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