Decomposition Pathways Of The Nitrogen-Rich Energetic Materials BTT And DAAT Investigated By Evolved Gas Analysis

摘要

3,6-Bis(2H-tetrazol-5-yl)-1,2,4,5-tetrazine (BTT) and 3,3 '-azobis(6-amino-1,2,4,5-rntetrazine) (DAAT) are nitrogen-rich substances considered as new components for energeticrnapplications, e.g. gas generators. Therefore, the thermal decomposition behaviour of BTT andrnDAAT was thermoanalytically characterized.rnBoth substances decompose at surprisingly high temperatures of > 200℃. Therndecomposition heats released belong to the highest ever measured for energetic materials underrnsimilar experimental conditions and are spread over a relatively narrow temperature range. Thernonline monitoring of the decomposition gases reveals the decomposition pathway which isrninitiated by ring opening reactions of the tetrazole and tetrazine subunits. Subsequent reactionrnsteps could be identified leading to a residue-free degradation of the C-N-backbone of BTT andrnDAAT.