SiO_2气凝胶的制备及在保温隔热领域中的应用

Preparation and Application in Field of Thermal Insulation SiO_2 Airgel

由于SiO_2气凝胶拥有极高的比表面积、低密度、低导热系数,因而引起科学界的兴趣。气凝胶通过溶胶-凝胶法合成,为了维持气凝胶的多孔结构通常气凝胶需要进行疏水改性,并通过特殊的干燥方法进行干燥。考虑到气凝胶的优异性能,主要讨论气凝胶的干燥技术以及在保温隔热领域中的应用。

As the Si O2 airgel has a high specific surface area,low density,low thermal conductivity,thereby causing interest of the scientific community.Synthesis gel method,in order to maintain the porous structure of the airgel generally require hydrophobically modified aerogels,and dried by a special drying method-by the sol airgel.Taking into account the excellent performance of airgel,this article focuses airgel drying technology and its application in the field of thermal insulation.