| Abstrakt: |
H-Trifurazano[3,4-b:3',4'-f:3",4"-d]azepine (HTFAZ) was synthesized via the reactions of nucleophilic substitution, cyclization and reduction using 3,4-bis(3'-nitrofurazano-4'-yl)furoxan (DNTF) as starting material. Based on the reactivity of HTFAZ, the two novel energetic compounds 7-(2,4,6-trinitrophenyl)-trifurazano[3,4-b:3',4'-f:3",4"-d]azepine (compound 1) and 7-(2,4,6-trinitro-3,5-diaminophenyl)-trifurazano[3,4-b:3',4'-f:3",4"-d]azepine (compound 2) were self-designed and synthesized. The structures of the target compounds were characterized by IR, H NMR, C NMR and elemental analysis. The thermal behaviors of compounds 1 and compound 2 were investigated by DSC and the detonation performances of the two compounds were predicted by Kamlet-Jacobs equations. The results show that the yield of HTFAZ reaches 63.2% after improving synthetic route. The thermal decomposition temperatures of compound 1 and compound 2 are 371.7'and 296.3', respectively, showing good thermal stability. The density of compound 1 is 1.90g/cm, the peak temperature of thermal decomposition is 371.7', the theoretical detonation velocity is 8033m/s and theoretical detonation pressure is 30.11GPa, The detonation performance of compound 1 is better than that of TNT, and the density and thermal stability are greater than those of TNT and RDX. [ABSTRACT FROM AUTHOR] |
