【摘要】 利用热重-微商热重法(TG-DTG)对4-氨基-1,2,4-三唑硝酸盐(1a)和1-氨基-1,2,3-三唑硝酸盐(1b)的热行为及其非等温分解动力学进行了研究.结果表明在1a的热分解过程中开环反应和随后的二次分解反应是在较高的温度下几乎同时进行的,而对于1b而言这两类反应是在不同的温度范围分步进行的.通过将model-free法和mode-fitting法相结合,得到1a和1b热分解反应的动力学方程.采取将基本安定性试验评价法与自加速分解温度评价法相结合的方法评估含能三唑硝酸盐的热安全性,解决了原有自加速分解温度评价法试验成本高、危险性大及试验周期长等问题.结果表明,含能三唑硝酸盐的对热抵抗能力与其三唑环结构的对称性有很大的关系.更多还原

【Abstract】 Thermal behavior and non-isothermal decomposition kinetics of 4-amino-1,2,4-triazolium nitrate(1a)and 1-amino-1,2,3-triazolium nitrate(1b)were addressed by using TGDTG method at different heating rates.The result shows that for 1athe ring-open reaction and subsquent decomposition reaction occur at highter temperature without obvious time interval,while for 1bthese two kinds of reactions occur step by step during different temperature range.The kinetic equations for the decomposition of 1aand 1bwere obtained by combining model-free method and model-fitting method.A new method that combining the evaluation way for the fundamental stability test with the evaluation way for the self-accelerating decomposition temperature to realize the evaluation for the heat-resistance of stabilities of energetic triazole nitrates was proposed,which got rid of the defects of former evaluation way for the selfaccelerating decomposition temperature such as high cost,high danger,long cycle and so on.The result show that the heat-resistance ability has a close relationship with the symmetry of triazole ring.The better symmetry the triazole ring has,the stronger heat-resistance ability the energetic triazole nitrate has.更多还原