解耦合法研究1,1′-二羟基-5,5′-联四唑二羟胺盐(TKX-50)热分解（英文）

Research on Thermal Decomposition of Dihydroxylammonium 5,5’-Bistetrazole-1,1′-diolate(TKX-50)by Decoupling Method

为了研究1,1'-二羟基-5,5'-联四唑二羟胺盐(TKX-50)的热分解,分别采用热重和差示扫描量热法进行热分解试验研究,并采用MATLAB软件对重合部分进行解耦合,用Málek方法对TKX-50热分解过程进行动力学研究。结果表明,TKX-50的热分解过程分为两个阶段,用MATLAB软件获得两个阶段完整的热分解曲线,并分别获得不同升温速率下各个阶段的Tonset、Tp、ΔH等基础参数。TKX-50的热分解遵循自催化反应模型,并分别获得动力学参数包括活化能、指前因子和动力学模型等,第一阶段:Ea=174.99 kJ?mol^-1,lnA=40.75,f(α)=α0.917(1?α)0.509;第二阶段:Ea=149.60 kJ?mol^-1,lnA=31.84,(fα)=α0.357(1?α)0.117。

To study the thermal decomposition of dihydroxylammonium 5,5'-bistetrazole-1,1'-diolate(TKX-50),thermal decomposition experiments such as thermogravimetry and differential scanning calorimetry were carried out,respectively.Meanwhile,MATLAB software was employed to decouple the overlapping parts and the Málek method was used to study the kinetics of the thermal decomposition of TKX-50.The results show that the thermal decomposition process of TKX-50 is divided into two stages.The com-plete thermal decomposition curves of the two stages are obtained by MATLAB software,and the basic parameters such as Tonset,Tp,andΔH are acquired at different heating rates.The thermal decomposition of TKX-50 follows the autocatalytic reaction model,and the kinetic parameters including activation energy,pre-exponential factor and kinetic model are obtained,respectively.For the first stage,Ea=174.99 kJ?mol^-1,lnA=40.75,f(α)=α0.917(1?α)0.509,for the second stage,Ea=149.60 kJ?mol^-1,lnA=31.84,(fα)=α0.357(1?α)0.117.