摘要
二氧化硅(SiO2)气凝胶是一种由SiO2粒子堆积而成的具有三维多孔网络结构的纳米材料,具有低密度、低热导率、高比表面积和高孔隙率等特点,在众多领域应用价值巨大而备受关注。Si O2气凝胶的疏水改性直接关系到其在制备或使用过程的结构稳定性。文章介绍了SiO2气凝胶疏水改性常用的两种方法:表面改性法和原位改性法,并且重点展示了SiO2气凝胶复合材料在隔热、催化、吸附、电化学等方面的最新研究进展。
Silica(SiO2)aerogel is a kind of nano material with three-dimensional porous network structure,which is made up of SiO2 particles.It has the characteristics of low density,low thermal conductivity,high specific surface area and high porosity.The application of SiO2 aerogel in many fields is of great value,so it has attracted much attention.Hydrophobic modification of SiO2 aerogel is directly related to their structural stability in atmospheric drying process and subsequent use in wet environments.Two commonly used methods for hydrophobic modification of SiO2 aerogel were introduced:surface modification and in-situ modification,and the latest research progress of SiO2 aerogel composites in heat insulation,catalysis,adsorption,electrochemistry was highlighted.
作者
卢永桢
陈茹
李永卓
刘斌
杜萌
郝梦
梁程耀
Lu Yongzhen;Chen Ru;Li Yongzhuo;Liu Bin;Du Meng;He Meng;Liang Chengyao(School of Textile and Material Engineering,Dalian Polytechnic University,Dalian 116034,China)
出处
《山东化工》
CAS
2020年第16期72-73,76,共3页
Shandong Chemical Industry
