Study on the synthesis and performance of 3,3′-azobis (6-amino-1,2,4,5-tetrazine)

The synthesis of high-nitrogen energetic material 3,3′-azobis (6-amino-1,2,4,5-tetrazine) (DAAT) from 3,6-bis (3,5-dimethylpyrazol-1-yl)-1,2,4,5-tetrazine by a four-step reaction is described. The thermal properties of DAAT were investigated by using Differential scanning calorimetry (DSC), Pressure differential scanning calorimetry (PDSC) and Thermogravimetry (TG) techniques. Kinetic parameters of decomposition and mechanism functions were obtained. The results showed that DAAT is thermally stable up to 283°C and gives an exotherm maximum at 320°C with Δ H of 1974.33 J·g −1 , which is higher than HMX. The values of E a are 209.69 and 208.77 kJ·mol −1 by the methods of Kissinger and Ozawa, respectively. The decomposition rate of DAAT is sensitive to pressure and in direct proportion to atmosphere pressure. The explosive performances of DAAT were calculated theoretically by VLW equation-of-state (EOS) and the results showed that several explosive formulations based on DAAT have high-energy and insensitive performance.