CHINESE JOURNAL OF ENERGETIC MATERIALS
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Mg(BH42对典型硝胺炸药热分解性能的影响
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1.航天化学动力技术重点实验室, 湖北 襄阳 441003;2.湖北航天化学技术研究所, 湖北 襄阳 441003

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国家自然科学基金资助(21975066、21875061)


Effect of Mg(BH42 on Thermal Decomposition of the Typical Nitramine Explosives
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1.Science and Technology on Aerospace Chemical Power Laboratory,Xiangyang 441003, China;2.Hubei Institute of Aerospace Chemotechnology,Xiangyang 441003, China

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    摘要:

    为探索硼氢化镁(Mg(BH42)对硝胺炸药热稳定性的影响,采用差示扫描量热法(DSC)研究了Mg(BH42/黑索今(RDX)、Mg(BH42/奥克托金(HMX)和Mg(BH42/六硝基六氮杂异伍兹烷(CL-20)3种混合硝胺炸药的热分解性能,并采用同步热分析-红外连用技术(TG-FTIR)分析了3种混合物的热分解气相产物。结果表明:Mg(BH42对3种硝铵炸药的热分解和表观活化能产生了不同的影响,RDX和CL-20分解放热量分别增加了14.7%和32.1%,HMX的分解放热量减少了45.8%;RDX的表观活化能降低了15.8 kJ·mol-1,HMX和CL-20的表观活化能分别提高了19.7 kJ·mol-1和11.5 kJ·mol-1。Mg(BH42没有改变3种硝胺炸药的热分解气相产物,其主要产物均为NO2和N2O;Mg(BH42使HMX、RDX热分解产物和含量变化不大,使CL-20出现了明显的水峰,NO2与N2O的浓度比值降低了89.2%;表明Mg(BH42对RDX和CL-20的热分解有促进作用,对HMX热分解有抑制作用。

    Abstract:

    In order to study the effect of Mg(BH42 on thermal stability of nitramine explosives, the thermal decomposition properties of Mg(BH42/RDX, Mg(BH42/HMX and Mg(BH42/CL-20 were investigated by differential scanning calorimetry (DSC). Thermal decomposition products of three mixtures were analyzed by Thermogravimetric analysis-Fourier transform infrared spectroscopy coupling technique (TG-FTIR). Results show that Mg(BH42 has different effects on the thermal decomposition and apparent activation energy of three kinds of nitramine explosives, in which the heat release of RDX and CL-20 increases by 14.7% and 32.1% respectively, and but that of HMX decreases by 45.8%. The apparent activation energies of RDX decreases by 15.8 kJ·mol-1, while that of HMX and CL-20 increases by 19.7 kJ·mol-1 and 11.5 kJ·mol-1, respectively. The thermal decomposition products of three kinds of nitramine explosives are the same (mainly NO2 and N2O) whether there is Mg(BH42 or not. Mg(BH42 has little effects on the thermal decomposition products and the contents of HMX and RDX, but caused the apparent water peak of CL-20. The concentration ratio of NO2 to N2O decreased by 89.2%, indicating that Mg(BH42 promotes the thermal decomposition of RDX and CL-20, and inhibits the thermal decomposition of HMX.

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引用本文

杜芳,汪慧思,卢辉,等. Mg(BH42对典型硝胺炸药热分解性能的影响[J].含能材料, 2022, 30(8):771-778. DOI:10.11943/CJEM2022148.
DU Fang, WANG Hui-si, LU Hui, et al. Effect of Mg(BH42 on Thermal Decomposition of the Typical Nitramine Explosives[J]. Chinese Journal of Energetic Materials, 2022, 30(8):771-778. DOI:10.11943/CJEM2022148.

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历史
  • 收稿日期: 2022-05-31
  • 最后修改日期: 2022-07-21
  • 录用日期: 2022-07-15
  • 在线发布日期: 2022-07-18
  • 出版日期: 2022-08-25