中文摘要：

合成了3，6-二硝基胍基-1，2，4，5-四嗪（ DNGTz），运用差示扫描量热法（ DSC）和热重法（ TG-DTG）研究其热行为。以DSC 曲线数据为基础，采用Kissinger法、Ozawa法和积分法研究了DNGTz的非等温热分解机理及动力学，获得DNGTz的热分解表观活化能和指前因子分别为187．23 kJ·mol^－1和1015．01s^－1，其热分解机理为相边界反应，热分解机理函数的微分形式为 f（α）＝1。为了对DNGTz进行热安全性研究，估算得到DNGTz的密度（ρ＝1．762 g·cm^－3）和导热系数（λ＝0．1856 W·m^－1·K^-1），同时应用 Micro-DSC III微热量仪对 DNGTz进行了比热容（cp）测定，得到了 DNGTz的比热容随温度变化的方程 cp（J·g^－1·K^-1）＝－2．8805＋2．1283×10^－2T－2．3132×10^－5T^2－1．1689×10^－8T^3（287 K＜T＜352 K）。运用热分解动力学参数、机理函数及 DNGTz的比热容方程、ρ和λ，计算得到 DNGTz 的绝热至爆时间（ tTIad＝8．16 s）、自加速分解温度（ TSADT＝249．12℃）、热点火温度（ Tbe＝262．31℃）和热爆炸临界温度（Tbp＝277．68℃），进而计算获得半径为1 m 的 DNTGz 几何体（无限圆柱、球或无限平板）在环境温度300 K时的热感度概率密度函数 S（T）与温度（T）的关系曲线、峰值温度（TS（T）max）、热安全度（SD）、临界热爆炸环境温度（Tacr）和热爆炸概率（PTE），结果表明球形样品的热安全性稍高于无限圆柱或平板状的样品。

英文摘要：

The compound 3,6-bis-nitroguanyl^-1,2,4,5-tetrazin（DNGTz）was synthesized and its thermal behavior was studied by differential scanning calorimetry（ DSC）and thermogravity（ TG-DTG）. The data in DSC curve were used to analyze the thermal decomposition mechanism and kinetics using the methods of Kissinger,Ozawa and integral. Therefore,the thermal kinetic param-eters of the activation energy and pre-exponential factor were obtained as 187.23kJ·mol^-1 and 1015.01s^-1,respectively. The ther-mal decomposition mechanism is phase boundary reaction and the differential function is f（α）=1. Then,the thermal safety of DNGTz,the density（ρ=1.762 g·cm^-3）and thermal conductivity（λ= 0.1856 W·m^-1·K^-1）were estimated and the specific heat capacity（ cp ） was measured to obtain the equation of cp with T in a micro-calorimetry（ Micro-DSCIII） which is cp （J·g-1·K^-1）=-2.8805＋2.1283×10^-2T-2.3132×10^-5T^2-1.1689×10^-8T^3（287K〈T〈352K）. Then,the thermal decomposition kinetic parameters,mechanism function and the equation of cp ,ρ and λ were combined to evaluate the adiabatic-time-to-explosion （tTIad= 8. 16 s）,the self-accelerating decomposition temperature（TSADT =249. 12 ℃）,the thermal ignition temperature（Tbe =262.31 ℃）and the critical temperature of thermal explosion（Tbp=277.68 ℃）,thermal sensitivity probability density function S（T） vs T for DNGTz（infinite cylindrical,spheroidic or infinite platelike）with the radius of 1m surrounded with 300K,the peak tempera-ture（TS（T）max）,safety degree（SD）,critical thermal explosion ambient temperature（Tacr）and thermal explosion probability（PTE）. The thermal safety of the spheroidic sample is found to be better than that of the infinite cylindrical or infinite platelike sample.