无机材料学报2000，Vol.15Issue(2)：381-384,4.
疏水型 SiO2气凝胶
Hydrophobic SiO2 Aerogels Prepared with Polyethoxydisiloxanes
摘要
Abstract
Hydrophobic SiO2 aerogels were produced by the surface modification of alcogels prepared via sol-gel process using polyethoxydisiloxanes (E-40) as the precursor and followed by ethanol supercritical drying. The structure of the modified silica aerogels was a silica matrix produced by hydrolysis and condensation of polyethoxydisiloxanes. Si-CH3 was modified on the surface of the silica matrix. The pore size decreased from 23.1nm to 18.2nm, the specific surface area increased from 477 m2*g-1 to 563 m2*g-1 and the water vapor adsorption decreased from 0.04 to 0.0012(weight ratio) after the surface modification of silica aerogels. The existence of Si-CH3 was observed using infrared spectra.关键词
疏水/SiO2气凝胶/溶胶-凝胶/表面修饰/超临界干燥Key words
hydrophobic/SiO2 aerogel/sol-gel/surface modification/super critical drying分类
信息技术与安全科学引用本文复制引用
邓忠生,魏建东,吴爱梅,暴玉萍,王珏,沈军,周斌,陈玲燕..疏水型 SiO2气凝胶[J].无机材料学报,2000,15(2):381-384,4.基金项目
国家自然科学基金(59802007)、863基金(863-416-3-9)、军品配套项目(教军配96-6)和启明星后基金(98QME1406)资助的课题 （59802007）
