DAAF/HATO基PBX炸药的制备与表征

Preparation and Characterization of DAAF/HATO-based PBX Explosive

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/F_(2602)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/F_(2602)呈球形,粒径范围为1~2mm,表面致密光滑;相比DAAF/HATO,DAAF/HATO/F_(2602)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。

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/F_(2602) 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/F_(2602) 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/F_(2602) is increased by 29.24kJ·mol^(-1),and the safety performance is significantly improved.