HYDROPHOBIC SILICA CO2 AEROGELS

被引：10

作者：

PAUTHE, M

DESPETIS, F

PHALIPPOU, J

机构：

[1] UNIV MONTPELLIER 2,SCI MAT VITREUX LAB,CNRS,UA 1119,CASE 069,PL EUGENE BATAILLON,F-34095 MONTPELLIER 5,FRANCE

[2] UNIV LYON 1,CHIM APPL & GENIE CHIM LAB,CNRS,UA 417,F-69365 LYON 2,FRANCE

来源：

JOURNAL OF NON-CRYSTALLINE SOLIDS | 1993年 / 155卷 / 02期

关键词：

Hydrophobic silica carbon dioxide aerogels - Triethoxysilane solution;

D O I：

10.1016/0022-3093(93)91314-S

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：

A hydrophobic silica gel is prepared by hydrolysis of a triethoxysilane solution. The Si-H group induces a repelling water effect. CO2 hypercritical drying is performed on such a gel. The obtained aerogel exhibits hydrophobic properties similar to those of the starting gel. Thermal properties are investigated and show that the Si-H group is not stable at temperatures > 300-degrees-C. Consequently the aerogel gains weight and rapidly sinters in this temperature range.

引用

页码：110 / 114

页数：5

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