Sol-gel derived porous silica films

被引:50
|
作者
Mezza, P [1 ]
Phalippou, J [1 ]
Sempere, R [1 ]
机构
[1] Univ Montpellier 2, Lab Verres, UMR 5587, F-34095 Montpellier 5, France
关键词
D O I
10.1016/S0022-3093(98)00825-4
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 modified sol-gel process, involving gelation of drops of a starting solution pressed on a substrate by a non-wetting glass, has been employed to obtain porous silica coatings on glass substrates at room temperature and pressure. Deposited films are homogeneous and crack-free. Films having a thickness higher than 5 mu m can be obtained. These aerogel like coatings show a refractive index lower than 1.2 and a dielectric constant lower than 2 with a pore volume of about 60%. Films exhibit hydrophobic properties because of surface modification. (C) 1999 Elsevier Science B.V. All rights reserved.
引用
收藏
页码:75 / 79
页数:5
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