The application of porous organic cage as highly efficient desensitizer of RDX

IF 5.9 Q1 ENGINEERING, MULTIDISCIPLINARY

Defence Technology(防务技术) Pub Date : 2025-10-01 DOI:10.1016/j.dt.2025.06.002

Hua Fang , Xiaodong Liu , Hao Li , Junying Li , Jiajie Song , Fanzhi Yang , Ruibin Liu , Min Xia , Zhaobo Zhang , Yunjun Luo

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引用次数: 0

Abstract

The desensitization of nitramine explosives while maintaining energetic performance is challenging. A highly efficient desensitizer is the key to solving the antinomy. This study focuses on using porous organic cages (POCs), specifically CC3 and RCC3, to desensitize RDX. By coating 0.1 wt%–5 wt% of POCs on RDX particles, a series of composite energetic materials were prepared. Characterization results show that POCs change the surface morphology of RDX, and there are interfacial interactions between them. The RDX@POCs composites exhibit enhanced stabilities in terms of heat, impact, friction, and electrostatic spark. For the RDX@RCC3-5% composite, the impact sensitivity (E_IS), friction sensitivity (E_FS), and electrostatic sensitivity (E_ES) were significantly reduced by 66.7%, 68.8%, and 56.5%, respectively, while the detonation velocity decreased by merely 3.1%. These findings indicate that POCs, especially RCC3, are promising desensitizers for nitramine explosives, and their desensitization mechanisms likely involve barrier and buffering effects. The distinct desensitization behavior of RDX@RCC3 highlights the effectiveness of POCs in reducing the sensitivity of RDX without significantly compromising its energetic properties.

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多孔有机笼作为RDX高效脱敏剂的应用

硝胺炸药在保持能量性能的同时脱敏是一项具有挑战性的工作。高效的脱敏剂是解决这一矛盾的关键。本研究的重点是使用多孔有机笼（POCs），特别是CC3和RCC3，来脱敏RDX。通过在RDX颗粒上涂覆0.1 wt% ~ 5 wt%的POCs，制备了一系列复合含能材料。表征结果表明，poc改变了RDX的表面形貌，两者之间存在界面相互作用。RDX@POCs复合材料在热、冲击、摩擦和静电火花方面表现出增强的稳定性。对于RDX@RCC3-5%的复合材料，冲击灵敏度（EIS）、摩擦灵敏度（EFS）和静电灵敏度（EES）分别显著降低了66.7%、68.8%和56.5%，而爆速仅降低了3.1%。这些发现表明，POCs，特别是RCC3，是一种很有前途的硝胺炸药脱敏剂，其脱敏机制可能涉及屏障和缓冲作用。RDX@RCC3独特的脱敏行为突出了POCs在降低RDX灵敏度而不显著影响其能量特性方面的有效性。

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.