基于Kissinger方法的3,4-双(4-硝基呋咱-3-基)氧化呋咱的热分解反应动力学参数和热稳定性研究（英文）

Study on Kinetic Parameters of Thermal Decomposition Reaction and Thermal Stability of 3,4-Bis(3-nitrofurazan-4-yl)furoxan Based on Kissinger Method

采用差示扫描量热法研究了DNTF和TNT在不同升温速率下的热分解特性;利用Kissinger方法计算和对比分析了DNTF和TNT的热分解反应动力学参数、热爆炸临界温度和热力学参数。结果表明,DNTF的热分解过程不同于TNT,DNTF的热分解经历了两个阶段,其中第1阶段为主要部分。DNTF的活化能为168.85kJ/mol,比TNT高约58kJ/mol,表明DNTF在低温下有良好的热稳定性。然而,除自由活化能外,DNTF的其他热力学参数均比TNT高。DNTF的热分解峰温和热爆炸临界温度都比TNT小。因此,与TNT相比,DNTF的热稳定性差。

The thermal decomposition characteristics of DNTF and 2 ,4 ,6‐trinitrotoluene （TNT） were investigated by means of differential scanning calorimetry at different heating rates .The kinetic parameters of thermal decomposition reaction ,critical tem‐perature of thermal explosion and thermodynamic parameters were calculated ,contrasted and analyzed by Kissinger methed .The results show that the thermal decomposition process of DNTF is different with TNT ,it occurs in two stages and the first acts as the major part .The activation energy of DNTF is 168 .85kJ/mol ,which is about 58kJ/mol higher than that of TNT ,revealing that DNTF has a good thermal stability at low temperature .However ,all the other thermodynamic parameters of DNTF are higher than those of TNT except the free energy of activation .The decomposition peak temperatures and critical temperature of thermal explosion of DNTF are lower than those of TNT .So ,the thermal stability of DNTF is poorer than that of TNT .