Propellants Explosives Pyrotechnics, Vol.45, No.12, 1870-1876, 2020
Thermal Kinetic Performance and Thermal Safety of 3,3 '-Bis-Oxadiazole-5,5 '-Bis-Methylene Dinitrate
DSC and TG/DTG were performed to investigate the thermal kinetic performance and thermal safety of 3,3'-bis-oxadiazole-5,5'-bis-methylene dinitrate (BODN) under a non-isothermal condition. The results reveal that the thermal behavior of BODN can be divided into three stages including a melting endothermic process and two decomposition exothermic processes. The apparent activation energy (E) and pre-exponent parameters (A) of the first exothermic decomposition reaction are 147.45 kJ mol(-1) and 10(13.77) s(-1), and its kinetic equation was obtained from the DSC curves. The self-accelerating decomposition temperatures (T-SADT), thermal ignition temperatures (T-TIT), and critical temperatures of the thermal explosion (T-b) to evaluate its thermal stability and safety are 166.41 degrees C, 178.09 degrees C, and 204.47 degrees C, respectively. The positive values of free energy of activation (Delta G(not equal)=135.49 kJ mol(-1)) indicate that the decomposition process of BODN must proceed under the heating condition.