Thermal Decomposition Characteristics and Compatibility Studies on [Co(H2O)4(N5)2]·4H2O

In composite solid propellants, the role of energetic combustion catalysts is crucial, with pentazocine metal salts emerging as a promising area for propellant applications. This study delves into pentazocine cobalt salt, a new high-nitrogen energetic material, to explore its potential in propellant technology. We utilize Thermogravimetric Analysis (TGA) and Differential Scanning Calorimetry (DSC) to investigate the thermal decomposition and compatibility of [Co(H2O)4(N5)2]·4H2O(CoN5), aiming to contribute valuable insights to the field. The results demonstrate that at a heating rate of 10 °C/min, the endothermic and exothermic peaks for CoN5 occur at 78 °C and 161 °C, respectively. Using the model-free KAS and FWO methods, the calculated activation energies are 59.13 and 63.21 kJ/mol, respectively, indicating consistency between the two methods. Compatibility experiments reveal that CoN5 is highly compatible with standard inert components in composite solid propellants. Among various energetic material combinations, the AP/CoN5 binary system exhibits superior performance. Overall, these findings underscore the potential of CoN5 as an effective combustion catalyst in composite solid propellant formulations.