三羟甲基丙烷三硝酸酯的热分解性能

利用高压DSC研究了三羟甲基丙烷三硝酸酯(TMPTN)的热分解特性.结果表明,尽管TMPTN与硝化甘油(NG)和三羟甲基乙烷三硝酸酯(TMETN)的结构相似,但TMPTN的热分解特性完全不同于NG和TMETN.常压下, TMPTN有两个峰,一个是熔化吸热峰,另一个是分解放热峰,而NG则是一个熔化吸热峰,TMETN是一个分解放热峰,没有熔化吸热峰;在高压下, TMPTN也有一个熔化吸热峰和一个分解放热峰,只是熔化吸热峰相对没有常压下的明显,随着压力的不同,峰形、峰温、放热量都明显不同.同时对TMPTN的分解机理进行了初步分析,并获得了TMPTN的热分解反应动力学参数.

Thermal Decomposition Characteristics of Trimethylolpropane Trinitrate

The thermal decomposition characteristics of trimethylolpropane trinitrate(TMPTN) were investigated by means of high pressure DSC.It is showed that even though the structure of TMPTN is similar to that of nitroglycerin(NG) and trimethylolethane trinitrate(TMETN),the thermal decomposition characteristics of TMPTN is different from that of NG and TMETN.At normal pressure,the DSC curve of TMPTN has two peaks: one is melting endothermic peak and the other is exothermic decomposition peak,while NG has only an endothermic peak and TMETN has an exothermic decomposition peak,without melting endothermic peak.At the condition of high pressure,TMPTN has two similar peaks, but the melting endothermic peak is not evident comparing with that at normal pressure.The shape,temperature and quantity of heat of decomposition peak greatly change with different pressures.The kinetic parameters of thermal decomposition of TMPTN are obtained,and the decomposition mechanism of TMPTN is preliminarity analyzed.