Thermal Decomposition Characteristics of a Novel High Energy Density Material DNTF

The thermal decomposition of 3,4dinitrofurazanofuroxan(DNTF) and its interreaction with catalyst were investigated by using DSC and TG.The decomposition characteristics and regulation of DNTF under different pressure conditions were analyzed.The results showed that when the pressure increase,the endothermic fusion peak temperature of DNTF is almost constant,but the major exothermic decomposition peak temperature at 2MPa shifts to higher temperature and the decomposition become more violent.Compared to the atmospheric,the decomposition heat gain obviously and with increasing of the pressure the secondary decomposition peak after the main decomposition peak is gradually obvious.Under the pressure function,the decomposition gasouss products enhance the catalytic effect to product in coacervate phase,appearing the secondary decomposition.The kinetic parameters of DNTF decomposition were obained,and the values of E_a and lnA are 58.8kJ/mol and 1.08s~(-1) for ambient pressure,and 205.1kJ/mol and 33.64s~(-1) for 2MPa respectively.These results show that the significant changes in decomposition process occur under high pressure.The effects of pressure and catalyst on the thermal decomposition process of DNTF is obtained.