The TATB/AP (1,3,5-triamino-2,4,6-trinitrobenzene/ammonium perchlorate) mixed system with different percentage content was prepared by physical mixing method.The thermal decomposition process of the system was measured by differential scanning calorimetry (DSC),and calculated the corresponding thermodynamic parameters to evaluate the thermal decomposition performance.The results showed that the decomposition peak temperature of the system was decreased,the heat release was increased,and the reaction activation energy was increased after AP was added into TATB.Compared with pure TATB,the peak temperature of thermal decomposition was decreased by 43.1℃,the heat release was increased by 1310J/g.The thermal decomposition performance of the system was improved.The activation energy was increased by 38.6kJ/mol when the mixed system contained 30% AP.These shown that the thermal decomposition performance and the thermal stability of the system were improved.
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