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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本文系统研究了以疏水性气相二氧化硅HB-630制备干水的方法，采用微观光学显微镜对干水的形貌结果进行观察。

This paper study the method of preparation of dry water by hydrophobic fumed SiO2 HB-630, and observe the appearance of water by micro-optical microscope.

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