采用DSC和TG法研究了硝酸铁、黑索今及RDX/硝酸铁混合物的热分解行为,并运用Coats-Redfern法和Satava-Sestak法计算了热分解动力学参数,得到了相应的机理函数。结果表明:随着硝酸铁加入量的增加,RDX热分解的初始温度下降,吸/放热峰变窄,硝酸铁对黑索今的热分解有一定的催化作用;当硝酸铁含量为24.33%时,热分解峰温前移程度最佳;硝酸铁含量为10%～40%时,RDX/硝酸铁混合物的热分解机理函数为n=1/3的Mampel power函数,G(α)=α~(1/3)。 The thermal decomposition behavior of the mixtures of ferric nitrate, ferroxyprogesterone and RDX / ferric nitrate was studied by DSC and TG methods. The thermal decomposition kinetic parameters were calculated by Coats-Redfern method and Satava-Sestak method, and the corresponding mechanism functions were obtained. The results showed that the initial temperature of thermal decomposition of RDX decreased with the increase of the amount of ferric nitrate, and the ferric nitrate had a catalytic effect on the thermal decomposition of black cable. When the content of ferric nitrate was 24.33% , The thermal decomposition peak temperature is the best. When the content of ferric nitrate is 10% -40%, the thermal decomposition mechanism of RDX / ferric nitrate mixture is the Mampel power function with n = 1/3, G (α) = α ~ (1/3).