摘要
在SiO2溶胶向凝胶转变过程中,依次加入RDX的N,N-二甲基酰胺(DMF)溶液和聚乙烯醇(PVA)的水溶液,采用提拉法和手工旋转涂抹法制备了白色、半透明、膜状RDX/SiO2传爆药。扫描电镜(SEM)分析表明,复合粒子内RDX晶体呈球状、块状和条状,其三维尺寸在0.3～1.0μm,分散在纳米SiO2框架内;与相同条件机械掺杂的RDX-SiO2相比,撞击、摩擦感度均显著降低。爆速测试结果表明,在低密度时,膜的厚度和炸药粒径是影响传爆性能的主要因素。
The white, sub-transparent membranous RDX/SiO2 booster was prepared with pulley and manual spin coating methods by adding sequentially the definite solution of N ,N-dimethylformamide（DMF） dissolving RDX and that of water dissolving polyvinyl alcohol （PVA） in the process of the silica（SiO2） sol transformation into the gel. The SEM results indicate that the spherical, blocklike and strip RDX crystals with three-dimensional sizes in the range of 0. 3-1.0μm are dispersed within the frames of nano-silica. Compared with the mixture of RDX doped SlOe （RDX-SiO2） at same conditions, the impact and friction sensitivities of the membranous RDX/SiO2 composite both decrease obviously. The measured detonation velocity of the membranous composite shows that the performance of booster is mainly affected by the thickness and particle size of the composite especially at low charge density.
出处
《火炸药学报》
EI
CAS
CSCD
北大核心
2009年第5期29-32,共4页
Chinese Journal of Explosives & Propellants
基金
山西省研究生优秀创新项目资助(20081070)
