Al/PTFE活性材料在炸药爆轰作用下的响应特性研究  

Research on the response characteristics of Al/PTFE active materials under explosive detonation

作　　者：李凌峰 王辉[1] 韩秀凤 沈飞[1] LI Lingfeng;WANG Hui;HAN Xiufeng;SHEN Fei(Xi’an Modern Chemistry Research Institute,China North Industries Group Corporation Limited,Xi’an 710065,China;Unit 96901 of the Chinese People’s Liberation Army,Beijing 100094,China)

机构地区：[1]西安近代化学研究所,西安710065 [2]中国人民解放军96901部队,北京100094

出　　处：《兵器装备工程学报》2023年第2期174-179,共6页Journal of Ordnance Equipment Engineering

摘　　要：为探究铝—聚四氟乙烯(Al/PTFE)活性材料在炸药爆轰作用下的响应特性,采用JO-8及DHL两种高爆速炸药对活性材料进行了端面及对碰爆轰加载试验。通过转镜式高速扫描相机记录了炸药爆轰波及活性材料激发的响应迹线,并结合理论分析获取了2种爆轰加载方式下活性材料内的冲击波压力值。结果表明:端面爆轰加载下,Al/PTFE活性材料在初始高压约为33.59 GPa的入射冲击波作用下发生剧烈反应,但随着冲击波压力衰减,反应速率迅速降低,表明该活性材料不能发生自持爆轰;对碰爆轰加载下,Al/PTFE活性材料受到持续高压作用,虽然由滑移爆轰加载产生的入射冲击波初始压力仅为15.76 GPa,但冲击波在活性材料的中心处发生汇聚叠加,形成高压集中区,在该区域内发生了“类爆轰”反应,反应速率达到4 mm/μs,但其反应过程还需要进一步研究。此外,研究还表明,同轴组合装药结构可使活性材料受到炸药爆轰产生的持续强冲击加载,不仅能够显著提升其反应速率,还可避免其反应无法自持的问题,可为相关战斗部装药的设计提供参考。In order to investigate the response characteristics of an active material, aluminum-polytetrafluoroethylene(Al/PTFE), under explosive detonation, this paper carries out end surface and head-on collision detonation loading tests of two high detonation velocity explosives on active materials, which are JO-8 and DHL. The propagation of the detonation waves and the response traces excited by the active materials are recorded by high-speed rotating mirror streak cameras. Combined with theoretical analysis, pressure values of the shock waves in the active materials in two detonation loading modes are obtained. The results show that, under the loading of end surface detonation, Al/PTFE reacts violently under the action of incident shock waves with an initial high pressure of about 33.59 GPa. However, with the attenuation of the shock waves, the reaction rate decreases rapidly, which indicates that the active materials are unable to produce self-sustaining detonation. Under the loading of head-on collision detonation, Al/PTFE is subjected to continuous high pressure. Although the initial pressure of the incident shock waves generated by the sliding detonation loading is only 15.76 GPa, superposition and convergence of the shock waves appear in the center of the active materials and thus form a high pressure concentration area, where detonation-like reaction occurs and the reaction rate reaches 4 mm/μs. However, the process of the reaction needs to be further researched. In addition, the research also indicates that the coaxial combined charge structure can make the active materials subjected to the continuous strong impact loading generated by explosive detonation, which not only significantly increases its reaction rate, but also avoids the problem that its reaction is unable to sustain itself. The above researches provide reference for the design of the related warhead charge.

关 键 词：Al/PTFE活性材料 爆轰加载 同轴组合装药 冲击波汇聚 波形 类爆轰反应 

分 类 号：TJ55[兵器科学与技术—军事化学与烟火技术] O389[理学—流体力学]