An experimental study of the deflagration-to-detonation transition in granular secondary explosives
An experimental study of the deflagration-to-detonation transition in granular secondary explosives
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DOI：
10.1098/rspa.1995.0026
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发表时间：
1995-03
期刊：
影响因子：
--
通讯作者：
P. Luebcke;P. Dickson;J. Field
中科院分区：
文献类型：
--
作者：
P. Luebcke;P. Dickson;J. Field
研究了制备的粒状次生炸药柱中的燃烧转爆轰（DDT）现象。选择2-（5-氰基四唑）五氨合高氯酸钴（三价钴）和季戊四醇四硝酸酯作为次级炸药进行研究，因为已知它们在点燃后几毫米内容易发生滴滴涕。CP列内的聚碳酸酯和PETN内的金属限制与狭缝窗口安装的限制，允许直接高速条纹摄影的事件。爆燃和爆轰速度和运行到爆轰长度作为一个功能的收费压密度进行了测量。爆炸柱的点火是通过无气体烟火的铜屏障以热的方式实现的。爆燃和爆轰速度被认为是强烈依赖于压密度与炸药。两种炸药似乎都有一个有利于滴滴涕的最大密度，但氯化石蜡没有最小密度。对滴滴涕的研究对于安全储存和使用反应性材料以及开发以次级炸药为基础的雷管仍然具有重要意义。
The deflagration-to-detonation transition (DDT) has been studied in prepared columns of granular secondary explosive. The secondary explosives 2- (5-cyanotetrazolato) pentammine cobalt (III) perchlorate (CP) and pentaerythritol tetranitrate (PETN) were chosen for the study due to their known propensity to undergo DDT within a few millimetres of ignition. Confinement of CP columns within polycarbonate and PETN within metallic confinement fitted with slit windows allowed direct high-speed streak photography of the events. Deflagration and detonation velocities and the run-to-detonation lengths were measured as a function of charge pressed density. Ignition of the explosive column was attained thermally through a copper barrier with a gasless pyrotechnic. Deflagration and detonation velocities were seen to depend strongly upon pressed density with both explosives. There appeared to be a maximum density conducive to DDT with both explosives but no minimum with CP. Studies of DDT continue to have interest for the safe storage and use of reactive materials, and for the development of a detonator based on a secondary explosive.