关键词: 疏水性SiO2气凝胶;气相氧化法;表面改性法;原位法

Abstract: The preparation methods of SiO2 aerogels were introduced .The preparation principles and methods of hydrophobic SiO2 aerogels were reviewed , like vapor phase oxidation , surface treatment , in-situ method and so on.Application of hydrophobic silica aerogels on the fields of heat , optics, chemistry ( adsorption and catalysis ) and medicine and so on was introduced .At last, the development and application prospect of hydrophobic silica aerogels were summarized .And its application on thermal insulation textiles and super-hydrophobic functional materials has good development prospects .

Key words: hydrophobic silica aerogels;gas phase oxidation;surface modification;in-situ method