水溶性氧化剂在微孔球形药中原位超细化分散方法研究

Research on In-situ Superfine Dispersion of Water Soluble Oxidizer in Microporous Ball Propellant

为了研究水溶性氧化剂在微孔球形药中原位超细化分散方法的可行性,在微孔球形药制备过程中,向内相水溶液中添加不同浓度的水溶性氧化剂,使氧化剂填充于微孔球形药内部孔隙中并实现均匀分散。利用扫描电子显微镜、X射线衍射分析和X射线光电子能谱分析等手段对含有不同氧化剂的微孔球形药及氧化剂颗粒物进行表征。结果表明:采用浓度不超过30%的氧化剂水溶液均可制备出内部均匀分散了氧化剂颗粒的微孔球形药,分散进入微孔球形药中的氧化剂颗粒平均粒径不超过3μm;随着氧化剂溶液浓度的上升,进入微孔球形药中的氧化剂颗粒逐渐增多;原位分散方法可以实现水溶性氧化剂在微孔球形药中的超细化分散。

In order to explore the feasibility of in-situ superfine dispersion of water-soluble oxidizer in microporous ball propellant,the oxidizers with various concentrations are added to aqueous solution in the process of preparing the microporous ball propellant,which enables the oxidizers to disperse uniformly by filling them in the internal pores of ball propellant.Scanning electron microscope,X-ray diffraction and X-ray photo electron spectrometer are used to characterize the ball propellants which contain various oxidizers and dispersed oxidizer particulates.The result indicates that the micro-porous ball propellant which is filled with uniformly dispersed oxidizer particulates could be prepared by adding water-soluble oxidizers with concentration of less than 30%.The mean particle size is not greater than 3μm.The fill rate of oxidizer in microporous ball propellant increases observably with the rising of oxidizer concentration.The superfine dispersion of water-soluble oxidizer in microporous ball propellant could be achieved by means of in-situ dispersing.