Abstract
The thermal decomposition behavior of 3,4,5-triamino-1,2,4-triazole dinitramide was measured using a C-500 type Calvet microcalorimeter at four different temperatures under atmospheric pressure. The apparent activation energy and pre-exponential factor of the exothermic decomposition reaction are 165.57 kJ mol−1 and 1018.04 s−1, respectively. The critical temperature of thermal explosion is 431.71 K. The entropy of activation (ΔS ≠), enthalpy of activation (ΔH ≠), and free energy of activation (ΔG ≠) are 97.19 J mol−1 K−1, 161.90 kJ mol−1, and 118.98 kJ mol−1, respectively. The self-accelerating decomposition temperature (T SADT) is 422.28 K. The specific heat capacity of 3,4,5-triamino-1,2,4-triazole dinitramide was determined with a micro-DSC method and a theoretical calculation method. Specific heat capacity (J g−1 K−1) equation is C p = 0.252 + 3.131 × 10−3 T (283.1 K < T < 353.2 K). The molar heat capacity of 3,4,5-triamino-1,2,4-triazole dinitramide is 264.52 J mol−1 K−1 at 298.15 K. The adiabatic time-to-explosion of 3,4,5-triamino-1,2,4-triazole dinitramide is calculated to be a certain value between 123.36 and 128.56 s.
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Financial support from the National Natural Science Foundation of China (Grant No. 20573098) and the Science and Technology Foundation of the National Defense Key Laboratory of Propellant and Explosive Combustion in China (Grant No. 9140C3501020901).
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Xue, L., Zhao, FQ., Xing, XL. et al. Thermal behavior of 3,4,5-triamino-1,2,4-triazole dinitramide. J Therm Anal Calorim 102, 989–992 (2010). https://doi.org/10.1007/s10973-010-0752-6
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DOI: https://doi.org/10.1007/s10973-010-0752-6