THERMOLYSIS CHARACTERISTICS OF SUPERFINE TAGZT COMPOUNDED WITH DIFFERENT HIGH EXPLOSIVES

Original Manuscript Submitted: 3/23/2022; Final Draft Received: 6/27/2022 The bis-(triam inoguanidinium)-5,5'-azotetrazolate (TAGZT) is a very attractive high-nitrogen compound. Its nitrogen content is up to 82.3 wt.% and its enthalpy of formation is as high as +2955 kJ/kg (+1106 kJ/mol). In particular, its detonation velocity reaches 9441 m/s. Therefore, TAGZT has attracted the attention of many scholars in recent years. Herein, the TAGZT was superfine, and the thermal decomposition characteristics of superfine TAGZT mixed with AP, NQ, RDX, HMX, Cl-20, and TKX-50 were studied by thermal analysis and kinetic analysis. The results indicated that after superfine TAGZT was compounded with AP and RDX, the differential scanning calorimetry (DSC) curves were a simple combination of the two DSC decomposition curves, and the thermal decomposition peaks and activation energies were significantly lower compared with those of the pure substances, and the two promoted each other's decomposition; after superfine TAGZT was compounded with HMX and CL-20, only one peak appeared in the DSC curves. The heat and products released from the decomposition of superfine TAGZT will intensify the decomposition of HMX and CL-20, and the two promote each other's decomposition; after superfine TAGZT is compounded with NQ, the activation energy is significantly higher compared with the pure substance, and the two inhibit each other's decomposition. After compounding with TKX-50, there are two exothermic peaks on the DSC curve, and the presence of TKX-50 makes the decomposition of superfine TAGZT more stable. The presence of TKX-50 decreased the thermal decomposition peak and activation energy of superfine TAGZT, while the presence of superfine TAGZT increased the activation energy of TKX-50.