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基于热分析动力学理论,用热重法(TG)研究了改黑铜推进剂在不同升温速率(2.5、5、7.5、10K/min)下的热分解过程。采用Ozawa法、KSA法和Coats-Redfern法计算了热分解反应的动力学参数。结果表明,改黑铜推进剂的热分解过程分为两个阶段:第Ⅰ反应阶段反应机理服从一级Mample法则,动力学参数为E=83.5kJ/mol,A=108.46s-1,动力学方程为dα/dt=108.46(1-α)exp(1.00×104/T);第Ⅱ反应阶段反应机理服从四级化学反应,动力学参数为E=219.6kJ/mol,A=1020.07s-1,动力学方程为dα/dt=1020.07(1-α)4exp(2.66×104/T)。
Based on the kinetic theory of thermal analysis, the thermal decomposition process of black copper propellants at different heating rates (2.5, 5, 7.5 and 10 K / min) was studied by thermogravimetry (TG). The kinetic parameters of the thermal decomposition reaction were calculated by Ozawa method, KSA method and Coats-Redfern method. The results show that the thermal decomposition process of black copper propellants is divided into two stages: the first stage reaction mechanism obeys the first order Mample law, the kinetic parameters are E = 83.5kJ / mol, A = 108.46s-1, kinetics The equation is: dα / dt = 108.46 (1-α) exp (1.00 × 104 / T). The reaction mechanism of the second reaction stage obeys the fourth-order chemical reaction with kinetic parameters of E = 219.6kJ / mol and A = 1020.07s-1 , The kinetic equation is dα / dt = 1020.07 (1-α) 4exp (2.66 × 104 / T).