CAJ | 학술논문

在SiO_2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/SiO_2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0.3~1.0 μm,分散在纳米SiO_2框架内;与相同条件机械掺杂的RDX-SiO_2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.
재SiO_2용효향응효전변과정중,의차가입RDX적N,N-이갑기선알(DMF)용액화취을희순(PVA)적수용액,채용제랍법화수공선전도말법제비료백색、반투명、막상RDX/SiO_2전폭약.소묘전경(SEM)분석표명,복합입자내RDX정체정구상、괴상화조상,기삼유척촌재0.3~1.0 μm,분산재납미SiO_2광가내;여상동조건궤계참잡적RDX-SiO_2상비,당격、마찰감도균현저강저.폭속측시결과표명,재저밀도시,막적후도화작약립경시영향전폭성능적주요인소.
The white, sub-transparent membranous RDX/SiO_2 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(SiO_2) 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 0.3-1.0 μm are dispersed within the frames of nano-silica. Compared with the mixture of RDX doped SiO_2 (RDX-SiO_2) at same conditions, the impact and friction sensitivities of the membranous RDX/SiO_2 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.