New 2,2,2-trinitroehylamino- and 2,2,2-trinitroethylnitramino-derivatives of azidotriazines. Synthesis, thermochemical properties and energetic potential

摘要

New 4,6-diazido-N-(2,2,2-trinitroethyl)-1,3,5-triazine-2-amine (I); d-azido-N~2,N~4-bis(2,2,2- trinitroethyl)-1,3,5-triazine-2,4-diamine (II); 6-azido-N~2,N~4-dinitro-N~2,N~4-dis(2,2,2-trinitroethyl)-1,3,5-triazine-2,4-diamine (III) and N~2,N~4,N~6-trinitro-N~2,N~4,N~6-tris(2,2,2-trinitroethyl)-1,3,5-triazine-2,4,6-triamine (IV) have been synthesized. Their enthalpies of formation have been determinated experimentally: 690.1±5.9; 326.2±13.6; 630.1±13.8 and 415.9+93 kJ/mol. Thermodynamic analysis shows that basing on compounds Ⅲ and Ⅳ it is possible to create propellants with low aluminum content, achieving specific impulse value up to 257-260 s at Pc and Pa equal to 4.0 and 0.1 MPa, respectively.