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Energetic Characteristics of HMX-Based Explosives Containing LiH

机译：基于HMX的含LiH炸药的能量特性

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摘要

The high energy density compound octahydro-1,3,5,7-tetranitro-1,3,5,7-tetrazocine (HMX) and the strong exothermic compound LiH represent an excellent principal explosive and an active fuel, respectively. Herein, the energetic characteristics of HMX-based explosives are explored by adding LiH as fuel additive. The detonation parameters of HMX-based explosives containing LiH were tested with free-field explosion experiments and compared with those of traditional TNT, HMX, and aluminized explosives. The results show that the explosives exhibit higher energy and present preferable explosion effect when LiH is added as an explosive ingredient. The improvement of impulse is more than 32.8% at 2m. The shock wave peak overpressure increases by almost 40% at a distance of 3m from detonation center specially for the explosive containing both LiH and Al additives. Elemental H and Li are expected to release tremendous energy to effectively improve the explosives instant damage power, but the detonation duration is shorter than that of Al-containing mixed explosives, which may limit the advantage over Al in the impulse. Li2CO3 powder is the solid product of HMX/LiH, which explains the LiH oxidation during the explosion. The exothermic processes in the formation are the reason for the increased energy of HMX/LiH explosives. These results can provide guidance to a potential energetic system formed by HMX and LiH.
机译：高能量密度的八氢-1,3,5,7-四硝基-1,3,5,7-四唑辛（HMX）和强放热化合物LiH分别代表优良的主炸药和活性燃料。在此，通过添加LiH作为燃料添加剂来探索基于HMX的炸药的能量特征。通过自由场爆炸实验测试了含LiH的HMX基炸药的爆炸参数，并将其与传统TNT，HMX和镀铝炸药的爆炸参数进行了比较。结果表明，当加入LiH作为炸药成分时，炸药具有较高的能量，并具有较好的爆炸效果。在2m处冲动的改善超过32.8％。距爆炸中心3m处的冲击波峰值超压增加了近40％，特别是对于同时包含LiH和Al添加剂的炸药。元素H和Li有望释放出巨大的能量，以有效地提高炸药的瞬时破坏力，但其爆炸持续时间比含Al的混合炸药的爆炸时间短，这可能会限制其在脉冲方面优于Al的优势。 Li2CO3粉末是HMX / LiH的固体产物，这解释了爆炸过程中LiH的氧化。地层中的放热过程是HMX / LiH炸药能量增加的原因。这些结果可以为HMX和LiH形成的潜在能量系统提供指导。

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