Effects of aging on mechanical sensitivity threshold and thermal decomposition characteristic of RDX/HMX

IF 5 Q1 ENGINEERING, MULTIDISCIPLINARY

Defence Technology(防务技术) Pub Date : 2025-03-01 DOI:10.1016/j.dt.2024.10.011

Shian Zhang , Yanru Wang , Zeshan Wang , Deyun Liu , Mingkun Fang , Zhiyong Ma , Xingliang Wu , Xibo Jiang , Sen Xu , Dabin Liu

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引用次数: 0

Abstract

In order to analyze the influences of storage aging on the safety of typical elemental explosives, the aged cyclotrimethylene trinitramine (RDX) and cyclotetramethylene tetranitramine (HMX) were prepared by isothermal aging tests. The reaction thresholds of aged RDX and HMX under any ignition probability were studied by Langlie-Optimal D method. The thermal decomposition characteristics of RDX and HMX after aging were analyzed by DSC and ARC. Experimental results showed that compared with unaged RDX and HMX, on the one hand, the critical impact energy and critical friction of RDX and HMX aged for 14, 28, and 56 days are significantly reduced at an explosion probability of 50%, 0.01%, and 0.0001%, respectively. With the increase of aging time, the mechanical sensitivity of RDX and HMX increases obviously. On the other hand, the initial decomposition temperature of RDX and HMX after 56 days of aging decreases, the decomposition heat decreases, the activation energy increases, and the reaction difficulty increases.

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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.