通过热重分析法(TG)测定了12种不同比例Al-黑索金(RDX)含铝炸药的热分解过程,分别获得不同升温速率下的热分解峰温。采用Kissinger方程计算了该系列RDX基含铝炸药的热分解表观活化能和指前因子,研究了RDX组分含量对其混合炸药热分解表观活化能Ed的影响。结果表明:随着该系列炸药中RDX含量的逐渐升高,热分解活化能Ed逐渐增大。同时,将该系列RDX基含铝炸药的TG热分解动力学参数与其5s热爆发、差示量热(DSC)热分解动力学参数相关联,发现这3种热分解的动力学参数符合同一补偿规律,获得的动力学补偿效应方程为:lnAa、b、d=0.26Ea、b、d+3.2911,相关系数r=0.9988。
The thermal decomposition process for Al-RDX hybrid explosives with different ratio were determined by thermogravimetry(TG),and the peak temperatures of thermal decomposition at different heating rates were obtained.And the thermal decomposition apparent activation energy and pre-exponential factors of the series explosives were calculated by Kissinger equation.The results showed that with the increasing content of RDX in this series of explosives,the thermal decomposition activation energy Ed increased gradually.Additionally,the TG thermal decomposition kinetic parameters of the series explosives were correlated with their 5s heat explosion and DSC thermal decomposition kinetic parameters.It was found that the kinetic parameters of the three kinds of thermal decomposition were conform to the same compensation law.The obtained kinetic compensation effect equation was:lnAa,b,d=0.26Ea,b,d+3.2911,and the correlation coefficient r=0.9988.
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