Thermal hazard analysis of dihydroxylammonium 5,5?-bistetrazole-1,1?-diolate (TKX-50)

摘要

Dihydroxylammonium 5, 5'-Bistetrazole-1,1'-diolate (TKX-50) has been widely studied in recent days. However, as a new kind of energetic materials, in addition to its basic properties, people are also concerned about its potentially dangerous caused by fire and explosion in production, transportation and storage. In this paper, a improved thermal analysis program was employed for predicting the thermal safety of kilo-scales TKX-50. The running principle of the advanced program is based on a differential isoconversional method, which can be used to obtain the kinetic results and simulation results by employing the data of accelerating rate calorimeter (ARC) and differential scanning calorimetry (DSC). Then, two important safety parameters (time to maximum rate under adiabatic conditions (TMRad) and self-accelerating decomposition temperature (SADT)) for different kilo-scales TKX-50 were obtained and discussed. Finally, the effects of ambient temperature on the thermal explosion of kilo-scale TKX-50 were investigated by using finite element analysis (FEA). The information gained is useful for the storage of kilo-scale TKX-50 in storage, what's more, the method has significant reference value for thermal risk evaluation of other energetic materials during their storages.