硅系延期药的共沉淀法制备及其性能  

Co-precipitation Preparation of Silicon Delay Composition and its Properties

作　　者：任庆国[1] 乔小晶[1] 李旺昌[1] 彭晨光 

机构地区：[1]北京理工大学机电学院,北京100081 [2]中国宇航出版社,北京100070

出　　处：《含能材料》2012年第4期409-413,共5页Chinese Journal of Energetic Materials

摘　　要：采用共沉淀法和手工混药法制备了硅系延期药,通过扫描电子显微镜(SEM)、能谱分析(EDS)及X-射线粉末衍射(XRD)分析显示:在共沉淀过程中有BaSO4和(BaPb)SO4的生成,并实现了对硅粉Si和Pb3O4的部分包覆。在60 MPa压力下将一定量延期药和适量点火药装入外径为5 mm的铁制延期管内,采用光电法对延期时间进行测试,结果表明:共沉淀法制备的延期药的平均燃速为1.25 mm.s-1,手工混合制备的延期药的平均燃速为1.41 mm.s-1;共沉淀法制备的延期药的延期精度明显高于手工混制的,前者燃速的标准差0.073,后者的为0.25。The silicon type delay composition was prepared by co-precipitation and hand-mixed.Based on the analysis of electron microscopy,EDS spectra and X-ray diffraction,BaSO4 and little （BaPb）SO4 were found out and part of silicon and Pb3O4 were coated by BaSO4 during the process of co-precipitation.The delay time and burning rate of the delay compositions were measured by light-sensitive detector.Results show that the average burning rate of the delay composition prepared by co-precipitation is 1.25mm.s^-1,slower than that of hand-mixed,which is 1.41mm.s^-1.The delay precision of the delay composition prepared by co-precipitation was better than that of hand-mixed one.The standard deviation of burning rate of the co-precipitation composition is 0.073,and that of the composition prepared by hand-mixed is 0.25.

关 键 词：军事化学 共沉淀 延期时间 延期精度 硅系延期药 

分 类 号：TQ560.1[化学工程—炸药化工]