RDX/NC推进剂的热分解动力学研究

IF 3.1 2区化学 Q2 CHEMISTRY, ANALYTICAL

Thermochimica Acta Pub Date : 2025-03-28 DOI:10.1016/j.tca.2025.179989

Samuel Delbarre, Léo Courty

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引用次数: 0

摘要

火炮推进剂是一种高能材料，用于在短时间内产生大量气体。它们的意外点火会导致严重的事故，过去曾造成许多人员伤亡。为了克服这个问题，研制了不敏感的火炮推进剂。然而，这种灵敏度的损失可能导致操作使用中的点火问题。固体相的热分解是点火过程中的关键步骤，也是具有挑战性的。本文介绍了基于RDX和硝化纤维的三种LOVA炮推进剂的热分解。用热重分析（TGA）研究了氮气氛下30 ~ 300℃的分解。先前开发的一种动力学分析方法已应用于TGA结果。这样，确定了整体动力学参数，得到了固相分解规律。利用这一规律建立的模型所提供的质量损失与热重分析结果非常吻合。

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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Thermal decomposition of RDX/NC gun-propellants: A kinetic study

Gun propellants are a family of energetic materials designed to produce a high amount of gases during a short period of time. Their accidental ignition can lead to severe accidents that caused many casualties in the past. To overcome this problem, insensitive gun propellants have been developed. However, this loss of sensitivity can lead to ignition issues in operational use. Thermal decomposition of the solid phase is a key step in the ignition process and remains challenging. This paper presents the thermal decomposition of three LOVA gun propellants based on RDX and nitrocellulose. Decomposition is studied by ThermoGravimetric Analysis (TGA) between 30 and 300 °C under nitrogen atmosphere. A kinetic analysis method, previously developed, has been applied to TGA results. Doing so, global kinetic parameters are determined to obtain a solid phase decomposition law. Models using this law provide mass losses in good agreement with TGA results.

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来源期刊

Thermochimica Acta 化学-分析化学

CiteScore

6.50

自引率

8.60%

发文量

210

审稿时长

40 days

期刊介绍： Thermochimica Acta publishes original research contributions covering all aspects of thermoanalytical and calorimetric methods and their application to experimental chemistry, physics, biology and engineering. The journal aims to span the whole range from fundamental research to practical application. The journal focuses on the research that advances physical and analytical science of thermal phenomena. Therefore, the manuscripts are expected to provide important insights into the thermal phenomena studied or to propose significant improvements of analytical or computational techniques employed in thermal studies. Manuscripts that report the results of routine thermal measurements are not suitable for publication in Thermochimica Acta. The journal particularly welcomes papers from newly emerging areas as well as from the traditional strength areas: - New and improved instrumentation and methods - Thermal properties and behavior of materials - Kinetics of thermally stimulated processes