Abstract:
TNT has several disadvantages, such as high vapor pressure, toxicity and viscosity. Explosives free from these disadvantages are being sought. In this paper, a new explosive, TNBA, 2,4,6-trinitro-3-bromoanisole, is synthesized by a chemical method. The thermal decomposition characteristics of TNBA are tested by DSC/TG-MS. The mechanical sensitivity, thermal sensitivity and detonation characteristics of TNBA and cast explosive based on it are estimated. The results show that the measured density of TNBA is 1.871 g/cm$^3$. At a heating rate of
10$^{\circ}$C/min, the thermal decomposition peak of TNBA is observed at 287$^{\circ}$C, and H$_2$, C, CH$_4$, H$_2$O, CO, N$_2$, CO$_2$ and HBr gases are released. The peaks of CO and N$_2$ are the strongest. These results are similar to those calculated using NASA CEA2 software. The thermal sensitivity of TNBA is lower than that of TNT. The detonation velocity and heat of explosion of TNBA and TNBA-based cast explosive are similar to those of TNT. In particular, TNBA and its cast explosive have advantages in chemical energy reserve, performance, brisance, and the ability to accelerate metals.
