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The pressure characteristics and safety performance of dihydroxylammonium 5,5ʹ-bistetrazole-1,1ʹ-diolate (TKX-50) decomposition were studied in confined space by using the accelerating rate calorimeter (ARC). The effects of the heating rate and the sample amount on the safety performance were investigated. The experiment results revealed that high heating rate was harmful to the safety performance of TKX-50. The decomposition mechanism did not change when using different amounts of sample in the range between 47.5 and 72.5 mg. After ignition, TKX-50 exhibited better safe performance than RDX and HMX. [ABSTRACT FROM AUTHOR]

The primary decomposition product (TKX-50-M) of dihydroxylammonium 5,5′-bistetrazole-1,1′-diolate (TKX-50) was obtained under adiabatic condition by using accelerating rate calorimeter (ARC). Meanwhile, diammonium 5,5′-bistetrazole-1,1′-diolate (ABTOX) was confirmed as the main component of TKX-50-M. Specific heat capacity of TKX-50-M and ABTOX was studied from 0 to 45 °C. In addition, the thermal decomposition of TKX-50-M and ABTOX was studied under adiabatic condition. The experiment results revealed that TKX-50-M were more thermal sensitive than ABTOX. Furthermore, ABTOX exhibited much violent than that of TKX-50-M during decomposition. [ABSTRACT FROM AUTHOR]

Thermogravimetric-differential scanning calorimeter and accelerating rate calorimeter (ARC) were performed to study the thermal characteristics and kinetics of energetic 5,5′-bistetrazole-1,1′-diolate (1,1-BTO). The DSC measurements showed one endothermic peak and one exothermic peak with decomposition occurring at 219.1, 227.2, 234.0 and 244.1 °C at different heating rates (2, 4, 8 and 15 °C min). The value of critical temperature of thermal explosion ( T ) and kinetics parameters was calculated, suggesting that 1,1-BTO is stable below the temperature of 175.36 °C. The thermal behavior under adiabatic condition was studied by ARC, depicting that onset temperature was 176.61 °C and the thermal decomposition ended at 215.93 °C, within the time span of 49.04 min. In addition, the thermo-kinetic parameters such as the activation energy E and pre-exponential factor A under adiabatic condition were also obtained. [ABSTRACT FROM AUTHOR]