Non-isothermal Decomposition Kinetics, Specific Heat Capacity and Adiabatic Time-to-explosion of 1-Amino-1-hydrazino-2,2-dinitroethylene (AHDNE)

The thermal behavior and non‐isothermal kinetics of the exothermic decomposition reaction of 1‐amino‐1‐hydrazino‐2,2‐dinitroethylene (AHDNE) were studied with DSC and TG/DTG methods. The kinetic equation obtained is dα/dT=1019.29(1−α)exp(−1.88×104/T)/β. The critical temperature of thermal explosion is 98.16 °C. The specific heat capacity of AHDNE was determined, and the standard molar specific heat capacity is 211.86 J·mol−1·K−1 at 298.15 K. The adiabatic time‐to‐explosion of AHDNE was also calculated to be 59.21 s. AHDNE is unstable and has much lower thermostability than 1,1‐diamino‐2,2‐dinitroethylene (FOX‐7). 1‐Amino‐1‐hydrazino‐2,2‐dinitroethylene (AHDNE) has no melting point, and its thermal behavior can be divided into two conterminous intensely exothermic decomposition stages. The peak temperatures are 112.95 and 133.73 °C at the heating rate of 5.0 °C·min−1, respectively. The whole enthalpy of exothermic decomposition reaction of AHDNE is about 1785.4 J·g−1, and the non‐isothermal kinetic equation of the first exothermic decomposition reaction of AHDNE is dα/dT=1019.29(1−α)exp(−1.88×104/T)/β.