INSENSITIVE HIGH-NITROGEN COMPOUNDS

摘要: The conventional approach to developing energetic molecules is chemically place one or more nitro groups onto a carbon skeleton, which why the term ''nitration'' synonymous explosives preparation. group carries oxygen that reacts with skeletal and hydrogen fuels, in turn produces heat gaseous reaction products necessary for driving an explosive shock. These nitro-containing typically have heats of formation near zero therefore most released energy derived from combustion process. Our investigation tetrazine, furazan tetrazole ring systems has offered different development, where significant amount chemical potential their large positive formation. Because these compounds often contain percentage nitrogen atoms, they are usually regarded as high-nitrogen fuels explosives. A general artifact less sensitive initiation (e.g. by impact) when compared traditional similar performances. Using precursor, 3,6-bis-(3,5-dimethylpyrazol-1-yl)-s-tetrazine, several useful based on s-tetrazine system been synthesized studied. Some first 3,6-diamino-s-tetrazine-1,4-dioxide (LAX-112) 3,6-dihydrazino-s-tetrazine (DHT). LAX-112 wasmore » once extensively studied insensitive Los Alamos; DHT example relies entirely its sustaining detonation. Recent synthesis efforts yielded azo-s-tetrazine, 3,3'-azobis(6-amino-s-tetrazine) DAAT, very high compounds, 4,4'-diamino-3,3'-azoxyfurazan (DAAF) 4,4'-diamino-3,3'-azofurazan (DAAzF), may important future roles applications. Neither DAAF nor DAAzF can be initiated laboratory impact drop tests, yet both some aspects better performances than 1,3,5-triamino-2,4,6-trinitrobenzene TATB--the standard thermal stability equal hexanitrostilbene (HNS), it too performer. recently discovered tetrazol derivative, 3,6-bis-(1H-1,2,3,4-tetrazol-5-ylamino)-s-tetrazine (BTATz) was measured exceptional initiation. burn rate low sensitivity pressure, this material great interest propellant community.« less