Isothermal thermal decomposition of the HMX-based PBX explosive JOL-1 |
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Authors: | Qiong Huang Xuwang Liu Yiyi Xiao Liqiong Luo Guan Luo |
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Affiliation: | 1. State Key Laboratory of Environment-friendly Energy Materials, Southwest University of Science and Technology , Mianyang, Sichuan, China;2. Institution of Chemical Materials, China Academy of Engineering Physics , Mianyang, Sichuan, China |
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Abstract: | ABSTRACT Isothermal thermal decomposition method was used to study the thermal behavior of the HMX-based PBX explosive JOL-1. The gas pressure versus time curves of the isothermal decomposition of JOL-1 were obtained within the temperature range of 90°C to 130°C. Kinetic parameters such as activation energy and frequency factor for the thermal decomposition of JOL-1 were obtained using the Arrhenius equation and model-fitting method. The model-fitting method further proved that the isothermal decomposition of JOL-1 at 90°C, 100°C, 110°C, 120°C, and 130°C is consistent with the No. 8 mechanism function, namely, the anti-Jander equation, controlled by 3D diffusion. The storage life of JOL-1 was estimated by the Semenov equation and the extent of reaction reached 0.1–0.4%. Results showed that the effective storage life of JOL-1 at 25°C, 40°C, and 60°C are 68 years, 10 years, 1 year, respectively, when the extent of reaction reached 0.1%. |
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Keywords: | Isothermal decomposition PBX explosive HMX storage life |
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