Researches on Thermal Decomposition Kinetics of Composite Modified Double-base Propellants |
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| Authors: | Tang Zhan Ren Yan Yang Li Zhang Tonglai Qiao Xiaojing Zhang Jianguo Zhou Zunning Zhao Fengqi Dang Yongzhan Xu Siyu Yi Jianhua |
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| Institution: | 1. State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081, China;2. National Key Laboratory of Science and Technology on Combustion and Explosion, Xi'an Modern Chemistry Research Institute, Xi'an, Shaanxi 710065, China |
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| Abstract: | The thermal decomposition kinetics of composite modified double‐base (CMDB) propellants with a series of contents of hexogeon (RDX) was investigated by using parameters of Teo, Ti, Tp, Tf, Tb, Ta, E, lg A and ΔH, which were obtained from using a CDR‐4P differential scanning calorimeter (DSC) and Perkin‐Elmer Pyris 1 thermogravimetric analyzer (TG) analyses with heating rates of 5, 10, 15 and 20 K/min. Reliable activation energy was calculated using Flynn‐Wall‐Ozawa method before analyzing the thermal decomposition mechanism. TG‐DTG curves were treated with Malek method in order to obtain the reaction mechanisms. The obtained results show that the thermal decomposition mechanisms with the conversion from 0.2 to 0.4 was f(α)?1/2α, and with the conversion from 0.5 to 0.7 was f(α)?(1/4)(1?α)?ln(1?α)]?3. |
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| Keywords: | thermal stability decomposition machenism DSC TG Malek method |
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