Thermal behaviors of a novel N-oxide amphoteric energetic compound 4,6-diamino-3-hydroxy-2-oxo-2,3-dihydro-1,3,5-triazine-1-oxide

To evaluate thermal properties and promote the application of novel N-oxide amphoteric energetic compound 4,6-diamino-3-hydroxy-2-oxo-2,3-dihydro-1,3,5-triazine-1-oxide (DAOTO), thermal behaviors of DAOTO were studied systematically by differential scanning calorimeter (DSC), thermogravimetric analyzer (TG/DTG) and thermogravimetric-mass-infrared spectrometry (TG-MS-FTIR) techniques. Results showed that DAOTO has only an obvious exothermic decomposition process during the range of 250 similar to 350 degrees C with an extrapolated starting point temperature (T-e) of 291.6 degrees C, a peak temperature (T-p) of 320.6 degrees C, a heat release of 1317 J g(-1) and a corresponding mass loss of similar to 17%, at a heating rate of 10 degrees C min(-1), and the kinetic equation of thermal decomposition process was obtained. The main thermal decomposition gas products of DAOTO are H2O, NH3 and CO, and the possible thermal decomposition process was analyzed. Besides, the specific heat capacity of DAOTO at 298.15 K was determined as 1.14 J g(-1) K-1, and adiabatic time-to-explosion was calculated to be a certain value between 100 and 105 s. This work proved DAOTO having a good thermal stability and provided theoretical support for the application of DAOTO.

Automated summary

The thermal behavior of DAOTO was systematically studied using techniques such as differential scanning calorimeter, thermogravimetric analyzer, and thermogravimetric-mass-infrared spectrometry. It was found that DAOTO has good thermal stability and its thermal decomposition process was analyzed. This study provides theoretical support for the application of DAOTO.