Study On Synthesis And Thermal Decomposition Of High-Nitrogen Compounds And Their Energetic Materials

The high nitrogen energetic compounds have been caught much attention to beused as High Energy Density Material by many scientists beacause of its high positiveheats of formation, low content of hydrogen and carbon, and good thermal stability.Howeber, systemic research in high nitrogen compound, such as, molecule structurecharacteristic, synthetical rules and thermal decomposition characteristics are lacked inour country.The molecule structure characteristics of some high nitrogen energetic compoundsare theoretically studied with HyperChem7.0 Software by means of different methods.The molecule structure characteristics, such as, bond length, atomic charge, heat offormation, total energy, molecure orbital energy, electrostatic potentials and bondenergy are obtained. The relationship between molecule structure and energy, stability,sensitivity of high nitrogen energetic compounds are discussed.The synthesis reactions of some high nitrogen compounds including tetrazole,tetrazine, furazan and their ring fused heterocyclic compounds are summarizedsystematically. The reactions of tetrazole, tetrazine and furazan, such as substitution,oxidation, coordination, cycloaddition reaction in the rings are also reviewed. Thesynthesis routes of two new high nitrogen compounds named D NH2and D NO2.are putforward.Using orthogonal experiments, the effect of the reaction temperature, the ratio ofreagents and the reaction time on the yield of DAG and DAF are studied. Then theoptimum synthetical condition is obtained. Diaminoglyoxime(DAG) is synthesized byone pot method with which the yield reaches about 61%. Then, Four kinds of furazanenergetic compounds such as, 3 amino 4 nitrofurazan(ANF), diaminoazoxyfurazan(DAOAF), diaminoazofurazan(DAAF) and dinitroazoxyfurazan(DNOAF) aresynthesized and chararcterized.The thermal decomposition characteristics of four high nitrogen energeticcompounds and their energetic material are studied under various pressure and heating...