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Thermolysis, nonisothermal decomposition kinetics, calculated detonation velocity and safety assessment of dihydroxylammonium 5, 5′-bistetrazole-1, 1′-diolate.
- Source :
-
Journal of Thermal Analysis & Calorimetry . Nov2016, Vol. 126 Issue 2, p473-480. 8p. - Publication Year :
- 2016
-
Abstract
- Thermal decomposition study of dihydroxylammonium 5,5′-bistetrazole-1,1′-diolate (TKX-50) was investigated by using TG-DTG and TG-IR-MS and found that N, NO, NH and HO were the main products during the decomposition process. The kinetic parameters ( Ea = 138.96 kJ mol and A = 10 s) for thermal decomposition reaction of TKX-50 were obtained from DSC profile by differential method and integral method, and the nonisothermal kinetic equation of the exothermic process was $${\text{d}}\alpha /{\text{d}}T = (10^{12.93} /\beta )3(1 - \alpha )[ - \ln (1 - \alpha )]^{2/3} \exp ( - 1.6713 \times 10^{4} /T),$$ suggesting that the main exothermic decomposition reaction mechanism of TKX-50 was classified as Avrami-Erofeev equation. In addition, the theoretical detonation velocity ( D = 8804 m/s) of TKX-50 at 298.15 K was calculated by a simple method. Finally, the safety parameters of TKX-50 (25 kg) including time to maximum rate under adiabatic conditions and self-accelerating decomposition temperature were calculated to be 142.12 and 129.01 °C by using AKTS software. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 13886150
- Volume :
- 126
- Issue :
- 2
- Database :
- Academic Search Index
- Journal :
- Journal of Thermal Analysis & Calorimetry
- Publication Type :
- Academic Journal
- Accession number :
- 118586334
- Full Text :
- https://doi.org/10.1007/s10973-016-5571-y