铝粉在温压炸药爆炸过程中的响应分析  

Response Analysis of Aluminum in the Process of Thermobaric Explosive Detonation

作　　者：裴明敬[1] 田朝阳 胡华权[1] 陈立强[1] 张景森[1] 于琴[1] 刘瑜[1] 

机构地区：[1]西北核技术研究所,陕西西安710024 [2]郑州欧丽电子集团股份有限公司,河南郑州450006

出　　处：《火炸药学报》2013年第4期7-12,共6页Chinese Journal of Explosives & Propellants

摘　　要：分析了铝粉在温压炸药爆炸过程中的温度响应、形态变化及反应时间和火球扩大行为。结果表明,爆轰初始阶段的爆轰波压力可使铝粉产生较大体积变形,促使脆性的表面氧化层快速破裂;初始高温足以使厚度在15μm以内的片状铝粉全部熔化,并在几微秒的时间内迅速破碎、细化或汽化,并在其后的几个毫秒内燃烧完毕。在爆炸产物扩散过程中150μm铝粉可继续获得能量,不断被剥离、破碎,最终达到点火温度并燃烧。铝粉的快速反应特性有利于提高爆炸冲击波能量及火球温度,促使二次压力波形成,增强对目标的结构毁伤效能,但造成高温火球的体积、分布面积和持续时间减小,削弱了火球的热损伤效应。The thermal response,modality change and reaction time of aluminum during thermobaric explosive detonation and fireball expanding were analyzed.The results indicate that the detonation pressure compresses the aluminum powder and makes its exterior oxidation crack quickly;the detonation temperature is high enough to make the aluminum flakes under 15μm melt completely,fall to small pieces and even boil off subsequently in several microseconds.In the period of detonation production expanding,aluminum powder with particle size of 150μm can obtain caloric continuously to melt,peel off,fall to pieces,and reach the burning temperature and finally burn.The characteristic of aluminum that reacted rapidly helps to enhance the shock wave and improve the fireball temperature.It is also beneficial to engender the second pressure wave,and increase the structure damage on the target.Nevertheless,it decreases the volume,distributing area and duration of the fireball,and weakenes the effect of thermal damage on the target.

关 键 词：温压炸药 铝粉 温度响应 形态变化 

分 类 号：TJ55[兵器科学与技术—军事化学与烟火技术] O69[理学—化学]