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).
本文利用对叔丁基苯甲酸、钛酸四异丙酯和正硅酸乙酯合成了钛类新型成核剂，考察了此类成核剂的性能；
In this paper, a kind of new titanium nucleating agents were prepared by isopropyl titanate, p-tert-butyl-benzoic acid and tetraethyl orthosilioate, and their performance were investigated.
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