中文摘要：

硅石飞行器的胶化被大音阶的第五音胶化技术从工业硅衍生物准备(polyethoxydisiloxanes， E-40 ) ，由 silylation 列在后面并且在周围的压力下面弄干。比表面区域，毛孔尺寸分发和调查的硅石 aerogelswere 和结果的热电导率证明硅石粒子的直径是大约 6 nm 和硅石的平均毛孔尺寸飞行器的胶化是 14.7 nm。哪个是大约 1000 m~2 中心点 g~ 的比表面区域(-1) 和热传导性是大约 0.014 wm~(-1) 中心 dotK~( 在房间温度和 1.01 X10~5 Pa 的压力的 -1) 。Si-CH_3 组是也检测的在硅石的内部表面飞行器的胶化，它表演 hydrophobic。硅石飞行器的胶化由这种技术发源是低费用并且有宽应用。

英文摘要：

Silica aerogels were prepared by sol-gel technique from industrial silicon derivatives （polyethoxydisiloxanes, E40）, followed by silylation and drying under ambient pressure. The specific surface area, pore size distribution and thermal conductivity of the silica aerogels were investigated and the results showed that the diameter of the silica particles is about 6 nm and the average pore size of the silica aerogels is 14.7 nm. The specific surface area of which is about 1000 m^2.g^-1 and the thermal conductivity is about 0.014 wm^-l.K^-1 at room temperature and pressure of 1.01×10^5 Pa. The Si-CH3 groups were also detected on the internal surface of the silica aerogels, which show hydrophobic. Silica aerogels derived by this technique is low cost and have wide applications.