3,3-Dinitroazetidinium (DNAZ) salt of perchloric acid (DNAZ·HClO4) was prepared, it was characterized by the elemental analysis, IR, NMR, and a X-ray diffractometer. The thermal behavior and decomposition reaction kinetics of DNAZ·HClO4 were investigated under a non-isothermal condition by DSC and TG/DTG techniques. The results show that the thermal decomposition process of DNAZ·HClO4 has two mass loss stages. The kinetic model function in differential form, the value of apparent activation energy (Ea) and pre-exponential factor (A) of the exothermic decomposition reaction of DNAZ·HClO4 are f(α) = (1 − α)−1/2, 156.47 kJ mol−1, and 1015.12 s−1, respectively. The critical temperature of thermal explosion is 188.5 °C. The values of ΔS≠, ΔH≠, and ΔG≠of this reaction are 42.26 J mol−1 K−1, 154.44 kJ mol−1, and 135.42 kJ mol−1, respectively. The specific heat capacity of DNAZ·HClO4 was determined with a continuous Cp mode of microcalorimeter. Using the relationship between Cp and T and the thermal decomposition parameters, the time of the thermal decomposition from initiation to thermal explosion (adiabatic time-to-explosion) was evaluated as 14.2 s.
1. Frumkin, AE, Churakov, AM, Strelenko, YA, Kachala, VV, Tartakkovsky, VA1999Synthesis of 1,2,3,4-tetrazino[5,6-f]benzo-1,2,3,4-tetrazine 1,3,7,9-tetra-N-oxides. Org Lett1:721–724.
16. Hu, RZ, Yang, ZQ, Liang, YJ1988The determination of the most probable mechanism function and three kinetic parameters of exothermic decomposition reaction of energetic materials by a single non-isothermal DSC curve. Thermochim Acta123:135–151.
Hu, RZ, Yang, ZQ, Liang, YJ1988The determination of the most probable mechanism function and three kinetic parameters of exothermic decomposition reaction of energetic materials by a single non-isothermal DSC curve. Thermochim Acta123:135–15110.1016/0040-6031(88)80017-0.)| false
Zhang, TL, Hu, RZ, Xie, Y, Li, FP1994The estimation of critical temperatures of thermal explosion for energetic materials using non-isothermal DSC. Thermochim Acta244:171–17610.1016/0040-6031(94)80216-5.)| false