Size‐dependent Effect on Thermal Decomposition and Hazard Assessment of TKX‐50 under Adiabatic Condition

Abstract The thermal decomposition of dihydroxylammonium 5,5′‐bistetrazole‐1,1′‐diolate (TKX‐50) with three different particle sizes were studied under adiabatic condition by using accelerating rate calorimeter (ARC). The adiabatic experiment revealed that TKX‐50 had two decomposition stages. Based on the experimental results, the decomposition parameters including the thermal data and pressure data of three kinds of TKX‐50 were used as the hazard assessment indicators. The results revealed that the decomposition of TKX‐50 nanoparticles was the mildest among all of the samples in the first decomposition stage. In addition, the SADT of three kinds of TKX‐50 with different sizes were predicted when stored in the wooden cylinder, and the results showed that TKX‐50 milliparticles exhibited the best thermal stability.