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The thermal decomposition of DNTF‐CMDB propellants was investigated by pressure differential scanning calorimetry (PDSC) and thermogravimetry (TG). The results show that there is only one decomposition peak on DSC curves, because the decomposition peak of DNTF cannot be separated from that of the NC/NG binder. The decomposition of DNTF can be obviously accelerated by the decomposition products of the NC/NG binder. The kinetic parameters of thermal decompositions for four DNTF‐CMDB propellants at 6 MPa were obtained by the Kissinger method. It is found that the reaction rate decreases with increasing content of DNTF.

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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 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.