Energetic materials with promising properties: synthesis and characterization of polynitro compounds

摘要

Four energetic polynitro derivativeswere designed, synthesized, and fully characterized.The structures of the resulting compounds 2,2,2-trinitroethyl 2,4,6-trinitrobenzoate(5), bis(2,2,2-trinitroethyl) 4,6-dinitroisophthalate(6), bis(2,2,2-trinitroethyl) 2,5-dinitroterephthalate(7) and bis(2,2,2-trinitroethyl) 2,4,6-trinitroisophthalate (8) were further confirmed by X-ray diffraction studies. Physicochemical andenergetic properties including density, thermal stability, and sensitivity were investigated, and energeticproper-ties (e.g., detonation velocities and detonation pressures) were calculated using EXPLO5 code. Most of the polynitro esters decompose at temperatures over 180 °C (except for 6: 171.6 °C), exhibit good thermal stability. Furthermore, the performance calculations gave detonation pressures and velocities for the ester derivatives in a range of 30.4-32.9 GPa and 8267-8559 m s-1, respectively. The esteryl-bridgedcompounds possess acceptable impact sensitivities (14-22 J)andfriction sensitivities (240-360 N. Thus, these compounds could be candidates as promising energetic materials.