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《Chinese Journal of Explosives & Propellants》 2009-02
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Preparation of RDX/SiO_2 Film by Sol-gel Method

WU Zhi-yuan,HU Shuang-qi,ZHANG Jing-lin,WANG Jin-ying, JIANG Xia-bing,LIANG Yi-qun(Chemical Industry and Ecology School of North University of China,Taiyuan 030051,China)  
Silica sol was prepared by sol-gel method at specific molar ratio and silica gel formed at constant temperature(55℃) through ageing some days while the acetone solution dissolving hexogen(RDX) was dropped into the gel system.The white and sub-transparent RDX/SiO2(mass ratio is 4∶1) composite film was acquired by dipping and pulling glass substrate out of the gel after drying.The effect of temperature and ageing time on the film was discussed.The experiment results show that if the content of binder keeps constantly and the temperature constant,with the decrease of sol ageing time,the composite film will become thin and smooth,but having less viscous and crack after dying.Contrarily with the increment of ageing time,the composite film will become thick and more viscous,but having agglomeration.The SEM micrograph shows that the particles of RDX and SiO2 distribute uniformly in the composite film.The components of RDX/SiO2 composite film preparing by sol-gel method are controlled randomly,it will display potential application value in micro-initiators and pyrotechnics.
【Fund】: 山西省研究生优秀创新项目资助(20081070)
【CateGory Index】: TB383.2
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