研究了热处理对气凝胶密度、比表面、微观结构和疏水性等的影响。

And we study the effects of heat-treated process on the aerogels' density, specific area, microstructure, hydrophobic property and so on.

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以正硅酸乙酯为原料，经溶胶-凝胶过程制备二氧化硅溶胶，再利用二甲基二乙氧基硅烷（DDS）对其进行改性，制备了疏水性二氧化硅凝胶。

Hydrophobic silica gel was prepared by sol-gel process using tetraethoxy silicone(TEOS) as raw material, then the surface was chemically modified by diethoxydimethylsilane(DDS).

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