Synthesis of Thermally Stable and Insensitive Energetic Materials by Incorporating the Tetrazole Functionality into a Fused-Ring 3,6-Dinitropyrazolo-[4,3-c]Pyrazole Framework
Synthesis of Thermally Stable and Insensitive Energetic Materials by Incorporating the Tetrazole Functionality into a Fused-Ring 3,6-Dinitropyrazolo-[4,3-c]Pyrazole Framework
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将四唑官能团纳入稠环 3,6-二硝基吡唑并-[4,3-c]吡唑骨架中合成热稳定且不敏感的含能材料
DOI：
10.1021/acsami.9b17384
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发表时间：
2019-12-11
影响因子：
9.5
通讯作者：
Zhang, Qinghua
中科院分区：
文献类型：
--
作者：
Xia, Honglei;Zhang, Wenquan;Zhang, Qinghua
本研究设计并合成了一系列融合环含能材料，即3,6-二硝基-1,4-二(1H-tetrazol-5-yl)-吡唑[4,3-c]吡唑（DNTPP，化合物2）及其离子衍生物（化合物3-8）。化合物2、3、6、7的中心点2H(2)O和8的分子结构用单晶x射线衍射证实。还评估了它们的物理化学和能量特性，如密度、热稳定性、形成热、灵敏度和爆轰特性（如爆速和爆轰压力）。结果表明，DNTPP及其大多数离子衍生物具有极高的热稳定性，对机械刺激不敏感。特别是化合物3的热分解温度高达329℃，而化合物7和8则非常不敏感（冲击灵敏度：>20 J；摩擦灵敏度：>360 N）。化合物2、3和6具有良好的综合性能，包括优异的热稳定性、显著的低灵敏度和良好的爆轰性能。这些特征表明，DNTPP及其离子衍生物作为热稳定和不敏感的含能材料具有相当大的前景。
A series of fused-ring energetic materials, i.e., 3,6-dinitro-1,4-di(1H-tetrazol-5-yl)-pyrazolo [4,3-c]pyrazole (DNTPP, compound 2) and its ionic derivatives (compounds 3-8), were designed and synthesized in this study. The molecular structures of compounds 2, 3, 6, 7 center dot 2H(2)O, and 8 were confirmed using single-crystal X-ray diffraction. Their physicochemical and energetic properties, such as density, thermal stability, heat of formation, sensitivity, and detonation properties (e.g., detonation velocity and detonation pressure), were also evaluated. The results indicate that DNTPP and most of its ionic derivatives are extremely thermally stable and insensitive toward mechanical stimuli. In particular, the thermal decomposition temperature of compound 3 is up to 329 degrees C, while compounds 7 and 8 are very insensitive (impact sensitivity: >20 J; friction sensitivity: >360 N). Compounds 2, 3, and 6 possess good comprehensive properties, including excellent thermal stability, remarkable low sensitivities, and favorable detonation performance. These features show that DNTPP and its ionic derivatives have considerable promise as thermally stable and insensitive energetic materials.