Abstract 2,4-Dinitroimidazole (2,4-DNI) is a novel energetic material with much less sensitive and potential for use as a propellant/insensitive munition (IM) formulations. 2,4-DNI possess high thermal stability and less sensitivity as compared to RDX and HMX which are high explosives extensively used at present. This paper reports a detailed thermal study of 2,4-DNI using various instrumental techniques. The activation energy (E = 205 ± 15 kJ/mol) was calculated from thermal decomposition of 2,4-DNI using DSC at different heating rate. The ignition temperature of pure 2,4-DNI was measured and showed at 285 °C. The TGA experiments demonstrate that 2,4-DNI decomposes in three steps with 92% total weight lose. Moreover, the effect of thermal energy on decomposition of 2,4-DNI in presence of polymeric binders like GAP and HTPB were investigated. Further, decomposition mechanisms of 2,4-DNI based on Electron Impact mass spectra analysis were also reported along with its explosive properties.

中文翻译：

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2,4-二硝基咪唑的热分解和动力学：一种不敏感的高爆炸药

摘要 2,4-二硝基咪唑 (2,4-DNI) 是一种新型含能材料，敏感性低得多，可用作推进剂/不敏感弹药 (IM) 配方。与目前广泛使用的炸药RDX和HMX相比，2,4-DNI具有较高的热稳定性和较低的敏感性。本文报告了使用各种仪器技术对 2,4-DNI 进行的详细热研究。活化能 (E = 205 ± 15 kJ/mol) 由 2,4-DNI 在不同加热速率下使用 DSC 的热分解计算得出。测量纯 2,4-DNI 的着火温度并显示为 285 °C。TGA 实验表明 2,4-DNI 分三步分解，总重量减少 92%。此外，研究了在聚合物粘合剂如 GAP 和 HTPB 存在下热能对 2,4-DNI 分解的影响。