Effects of the Al content on thermal decomposition and combustion properties of HMX/Al composites

IF 3.3 Q2 CHEMISTRY, MULTIDISCIPLINARY

Energetic Materials Frontiers Pub Date : 2022-12-01 DOI:10.1016/j.enmf.2022.11.003

Hua Fang, Jin-qiang Zhou, Peng Deng, Peng-fei Zhu, Xue-yong Guo

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引用次数: 2

Abstract

To understand the thermal decomposition and combustion characteristics of HMX/aluminum (Al) composites, this study prepared the HMX/Al composites with different Al contents and carried out the thermal decomposition and combustion performance tests of these composites. The thermal analysis results showed that the activation energy of the HMX/Al composites increased from 483.94 kJ·mol⁻¹ to 541.60 kJ·mol⁻¹ when the Al content increased from 0 to 30 wt%. However, the change in the Al content had little effect on the heat flow of the HMX/Al composites. The combustion results showed that the calorific value of HMX/Al-30 composite reached 16,860 J·g⁻¹. The flame height and burning intensity gradually increased with an increase in the Al content, and the burning duration of HMX/Al-10, HMX/Al-20, and HMX/Al-30 gradually decreased by 0.21, 0.57 ms and 0.91 ms, respectively. The results showed that Al powder as metal fuel can control the combustion reactions and energy output of HMX-based explosives.

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Al含量对HMX/Al复合材料热分解和燃烧性能的影响

为了解HMX/铝(Al)复合材料的热分解和燃烧特性，本研究制备了不同Al含量的HMX/Al复合材料，并对这些复合材料进行了热分解和燃烧性能测试。热分析结果表明，当Al含量从0 wt%增加到30 wt%时，HMX/Al复合材料的活化能从483.94 kJ·mol−1增加到541.60 kJ·mol−1。而Al含量的变化对HMX/Al复合材料热流的影响不大。燃烧结果表明，HMX/Al-30复合材料的热值达到16860 J·g−1。随着Al含量的增加，火焰高度和燃烧强度逐渐增加，HMX/Al-10、HMX/Al-20和HMX/Al-30的燃烧时间分别逐渐减少0.21、0.57和0.91 ms。结果表明，铝粉作为金属燃料可以控制hmx基炸药的燃烧反应和能量输出。

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来源期刊

Energetic Materials Frontiers Materials Science-Materials Science (miscellaneous)

CiteScore

6.90

自引率

0.00%

发文量

审稿时长

12 weeks