Thermal Kinetic Performance and Thermal Safety of 3,3’‐Bis‐Oxadiazole‐5,5’‐Bis‐Methylene Dinitrate

Abstract

AbstractDSC 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 1013.77 s−1, and its kinetic equation was obtained from the DSC curves. The self‐accelerating decomposition temperatures (TSADT), thermal ignition temperatures (TTIT), and critical temperatures of the thermal explosion (Tb) to evaluate its thermal stability and safety are 166.41 °C, 178.09 °C, and 204.47 °C, respectively. The positive values of free energy of activation (ΔG≠=135.49 kJ mol−1) indicate that the decomposition process of BODN must proceed under the heating condition.