二氧化硅气凝胶的制备工艺与应用  

Preparation and Application of Silica Aerogels

作　　者：陈宇卓 欧忠文[1] 刘朝辉[1] 郭曈 邓伟 向玩风 

机构地区：[1]后勤工程学院化学与材料工程系,重庆401311

出　　处：《当代化工》2017年第10期2009-2013,共5页Contemporary Chemical Industry

基　　金：全军后勤科研计划项目(BY115C007)

摘　　要：三维纳米孔隙结构的二氧化硅气凝胶具有孔隙率高、密度低、比表面积大等基本特征,这些优异的特性使二氧化硅气凝胶在许多领域得到广泛研究和应用。二氧化硅气凝胶一般通过溶胶-凝胶过程、老化、干燥处理得到。主要总结了二氧化硅气凝胶的制备过程及机理,介绍二氧化硅气凝胶的相关领域的应用,并对二氧化硅气凝胶材料的发展前景进行了展望。Silica aerogels with three-dimensional nano-porous structure have the characteristics of high porosity, low density and large specific surface area. Due to these exceptional properties, silica aerogels have been deeply studied and applied in diverse fields. Silica aerogels are obtained through sol-gel, aging and drying process. In this paper, the preparation process and mechanism of silica aerogels were mainly summarized, and application of silica aerogels was introduced. In addition, the development prospect of silica aerogels was discussed.

关 键 词：二氧化硅气凝胶 溶胶-凝胶 干燥 应用 

分 类 号：TQ127.2[化学工程—无机化工]