孔隙度对PBX炸药冲击起爆影响的实验研究  

Experimental research on effects of porosity on shock initiation of PBX explosive

作　　者：刘海庆 段卓平[1] 白志玲 温丽晶 欧卓成[1] 黄风雷 LIU Haiqing;DUAN Zhuoping;BAI Zhiling;WEN Lijing;OU Zhuocheng;HUANG Fenglei(State Key Laboratory of Explosion Science and Technology,Beijing Institute of Technology,Beijing 100081,China;Nuclear and Radiation Safety Center,Ministry of Environmental Protection,Beijing 100082,China)

机构地区：[1]北京理工大学爆炸科学与技术国家重点实验室,北京100081 [2]环境保护部核与辐射安全中心,北京100082

出　　处：《爆炸与冲击》2019年第7期43-48,共6页Explosion and Shock Waves

基　　金：国家自然科学基金(U1630113);材料与结构冲击动力学创新小组(11521062)

摘　　要：为了研究孔隙度(装药密度)对PBX炸药冲击起爆爆轰成长的影响,采用炸药冲击起爆锰铜压阻一维拉格朗日实验测试系统,测量了不同孔隙度的PBXC03炸药(HMX的质量分数为87%,TATB的质量分数为7%,黏结剂的质量分数为6%)冲击起爆过程不同拉格朗日位置的压力-时间历史。结果显示:在本文装药范围和加载条件下,孔隙度对PBX炸药冲击起爆爆轰过程的影响不单调,中等密度的炸药冲击起爆和爆轰成长最快,这是热点点火过程与燃烧反应过程共同作用的结果。To investigate the influence of the porosity(charge density)on the shock initiation and detonation of polymer bonded explosives(PBXes),a one-dimensional Lagrangian experimental testing system is adopted to measure the pressure-time histories at different Lagrangian locations of PBXC03(87%HMX,7%TATB,6%binder by weight)with three different porosities(or charge densities),in which,an explosive plane-wave lens is used to generate a high-pressure planar detonation wave loading,and the Manganin piezoresistive pressure gauge measurement technique and the attenuation technique by both air-gap and Algap are used.The experimental results show that the detonation grows the fastest in the explosive with a moderate porosity.This work provides more detailed experimental data for the further development of mesoscopic reaction rate models for shock initiation of heterogeneous explosives.

关 键 词：冲击起爆 PBX炸药 拉格朗日实验分析测试系统 孔隙度 

分 类 号：O381[理学—流体力学]