Non‐isothermal Decomposition Kinetics, Specific Heat Capacity and Adiabatic Time‐to‐explosion of a High Energy Material: 4,6‐Bis(5‐amino‐3‐nitro‐1,2,4‐triazol‐1‐yl)‐5‐nitropyrimidine

The thermal behavior of 4,6-bis-(5-amino-3-nitro-1,2,4-triazol-1-yl)-5-nitropyrimidine (BANTNP) was studied under a non-isothermal condition by DSC, PDSC and TG/DTG methods. The kinetic parameters (Ea and A) of the exothermic decomposition reaction are 304.52 kJ·mol−1 and 1024.47 s−1 at 0.1 MPa, 272.52 kJ·mol−1 and 1021.76 s−1 at 5.0 MPa, respectively. The kinetic equation at 0.1 MPa can be expressed as: dα/dT=1025.3(1−α)3/4exp(−3.8044×104/T)/β The critical temperature of thermal explosion is 588.28 K. The specific heat capacity of BANTNP was determined with a Micro-DSC method, and the standard molar specific heat capacity is 397.54 J·mol−1·K−1 at 298.15 K. The adiabatic time-to-explosion of BANTNP was calculated to be 11.75 s.