温压炸药爆炸释热特性研究

为了研究RDX基温压炸药的爆炸热量释放历程,对自由场和半密闭条件下的TNT、852及G-1温压炸药爆炸过程进行了空爆试验,采用热通量传感器记录了3种炸药在两种试验环境下爆炸过程中的热通量时间历程。结果表明,热通量传感器可以获得炸药爆轰、无氧燃烧及有氧燃烧3个阶段的热历程时间曲线;在半密闭空间中爆炸时,G-1温压炸药有3个明显的热量释放历程:爆轰、无氧燃烧和有氧燃烧;TNT和852炸药只有爆轰和有氧燃烧过程。结合852及G-1温压炸药配方组成,对比分析热量释放时间历程曲线认为,铝粉均参与了G-1温压炸药的3个反应阶段。对比自由场和半密闭条件试验结果发现,试验环境对温压炸药反应历程影响较大,半密闭条件有利于提高温压炸药的热量输出。

Research on the Heat Release Characters of TBX Explosion

In order to study the heat release process of RDX based thermal-baric explosive （TBX）, heat radiation flux sensor was used to measure the heat radiation flux histories of TNT, 852 and G-1 TBX under free-field and semi- enclosed conditions, respectively, in air blast experiments. The results shows that heat flux-time curves of detonation, anaerobic combustion and aerobic combustion could be obtained from the heat radiation sensor. In semi-enclosed condition, G-1 presents three distinct heat release processes including detonation, anaerobic combustion and aerobic combustion, while TNT and 852 have only two heat release processes of detonation and anaerobic combustion. Taking the compositions of 852 and G-1 into account, comparative analysis of the heat radiation-time curves revealed that A1 is involved in the three re- action stages of G-1. The experimental results under free-field and semi-enclosed conditions show that the reaction process of TBX is strongly affected by the test conditions, in that the semi-enclosed condition facilitates raising the heat release volume of TBX.