Discovery of energetic-energetic cocrystal polymorphs with high-energy, low-sensitivity

IF 5.9 Q1 ENGINEERING, MULTIDISCIPLINARY

Defence Technology(防务技术) Pub Date : 2025-09-01 DOI:10.1016/j.dt.2025.05.026

Shen Qiao , Yanwei Tan , Zening Liu , Fan Ma , Shi Huang , Kangcai Wang , Yu Liu , Zongwei Yang

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Abstract

Herein, a first example of energetic-energetic cocrystal polymorphs with a 1:1 M ratio was discovered by cocrystallizing CL-20 (2,4,6,8,10,12-hexanitro-2,4,6,8,10,12-hexaazaisowurtzitane) with 1,3-DNP (1,3-dinitropyrazole). These two energetic cocrystal polymorphs (cocrystal 1 and cocrystal 2) exhibit distinct crystal packing styles, which lead to significant variations in their physicochemical properties. Notably, cocrystal 2 has a high density of 1.963 g⋅cm⁻³ at 170 K, exhibiting high detonation performances (9187 m⋅s⁻¹; 38.68 GPa) comparable to HMX (1,3,5,7-tetranitro-1,3,5,7-tetrazocane) meanwhile displaying an improved safety (10 J) relative to RDX (1,3,5-trinitro-1,3,5-triazinane), making it a potential high-energy, low-sensitivity energetic material. This work opens up a new strategy to deeply tune properties of energetic materials by constructing energetic-energetic cocrystal polymorphs. These energetic cocrystal polymorphs represent a new field of energetic materials that has not yet been studied.

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发现高能量、低灵敏度的高能共晶多晶

本文通过与1,3- dnp（1,3-二硝基吡唑）共晶，首次发现了M比为1:1的能量-能共晶多晶。这两种高能共晶多晶（共晶1和共晶2）表现出不同的晶体填充方式，这导致了它们的物理化学性质的显著变化。值得注意的是，共晶2在170 K下具有1.963 g⋅cm−3的高密度，具有与HMX（1,3,5,7-四硝基-1,3,5,7-四氮杂烷）相当的高爆轰性能（9187 m⋅s−1;38.68 GPa），同时具有比RDX（1,3,5-三硝基-1,3,5-三氮杂烷）更高的安全性（10 J），是一种潜在的高能量、低灵敏度能材料。这项工作开辟了一种新的策略，通过构建能量-能量共晶多晶来深度调整含能材料的性质。这些高能共晶多晶体代表了一个尚未被研究的高能材料新领域。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Defence Technology(防务技术) Mechanical Engineering, Control and Systems Engineering, Industrial and Manufacturing Engineering

CiteScore

8.70

自引率

0.00%

发文量

728

审稿时长

25 days

期刊介绍： Defence Technology, a peer reviewed journal, is published monthly and aims to become the best international academic exchange platform for the research related to defence technology. It publishes original research papers having direct bearing on defence, with a balanced coverage on analytical, experimental, numerical simulation and applied investigations. It covers various disciplines of science, technology and engineering.