Preparation and Characterization of DAAF/HATO-based PBX Explosive
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摘要:为了促进高能钝感炸药的发展，制备了3,3 ' -二氨基- 4,4 ' -偶氮氧化呋咱（DAAF）与1,1 ' -二羟基- 5,5 ' -联四唑二羟胺盐（HATO）形成的复合炸药。首先，采用自组装重结晶技术制备了DAAF/HATO复合粒子；然后，采用水悬浮法制备了DAAF/HATO/F2602复合材料，并对样品的形貌、粒径分布、晶体结构、热性能以及撞击感度进行表征和测试。研究表明：DAAF/HATO为规则形态的花瓣状球体，DAAF/HATO/F2602呈球形，粒径范围为1~2mm，表面致密光滑；相比DAAF/HATO，DAAF/HATO/F2602的平均表观活化能提高了29.24kJ·mol-1，并且安全性能显著提高。
Abstract:In order to promote the development of high-energy insensitive explosives, the preparation of the composite explosive formed by 3,3'-diamino-4,4'-azofuroxan (DAAF) and 1,1'-dihydroxy-5,5'-bitetrazole dihydroxylamine salt (HATO) was conducted. DAAF/HATO composite particles were prepared by self-assembly recrystallization technology, then the DAAF/ HATO/F2602 composite was prepared by water suspension method, and the morphology, particle size distribution, crystal structure, thermal property and impact sensitivity of samples were characterized and tested. The study show that DAAF/HATO is a petal-like sphere with regular morphology, DAAF/HATO/F2602 is spherical with a particle size range of 1mm to 2mm, and the surface is dense and smooth. Compared to the DAAF/HATO, the average apparent activation energy of DAAF/HATO/F2602 is increased by 29.24kJ·mol-1, and the safety performance is significantly improved.
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