文章基本信息

标题：Thermal decomposition and kinetics of plastic bonded explosives based on mixture of HMX and TATB with polymer matrices
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作者：Arjun Singh ; Tirupati C. Sharma ; Mahesh Kumar 等
期刊名称：Defence Technology
印刷版ISSN：2214-9147
出版年度：2017
卷号：13
期号：1
页码：22-32
DOI：10.1016/j.dt.2016.11.005
出版社：Elsevier B.V.
摘要：This work describes thermal decomposition behaviour of plastic bonded explosives (PBXs) based on mixture of l,3,5,7-tetranitro- 1,3,5,7-tetrazocane (HMX) and 2,4,6- triamino-1,3,5-trinitrobenzene (TATB) with Viton A as polymer binder. Thermal decomposition of PBXs was undertaken by applying simultaneous thermal analysis (STA) and differential scanning calorimetry (DSC) to investigate influence of the HMX amount on thermal behavior and its kinetics. Thermogravimetric analysis (TGA) indicated that the thermal decomposition of PBXs based on mixture of HMX and TATB was occurred in a three-steps. The first step was mainly due to decomposition of HMX. The second step was ascribed due to decomposition of TATB, while the third step was occurred due to decomposition of the polymer matrices. The thermal decomposition % was increased with increasing HMX amount. The kinetics related to thermal decomposition were investigated under non-isothermal for a single heating rate measurement. The variation in the activation energy of PBXs based on mixture of HMX and TATB was observed with varying the HMX amount. The kinetics from the results of TGA data at various heating rates under non-isothermal conditions were also calculated by Flynn–Wall–Ozawa (FWO) and Kissinger-Akahira-Sunose (KAS) methods. The activation energies calculated by employing FWO method were very close to those obtained by KAS method. The mean activation energy calculated by FWO and KAS methods was also a good agreement with the activation energy obtained from single heating rate measurement in the first step decomposition.
关键词：Plastic bonded explosives; Thermogravimetric analysis; Differential scanning calorimeter; Thermal decomposition; Kinetics