Combustion Behaviour of Melt-Castable Explosives from Azetidine Family

摘要

Combustion behaviours of melt-castable explosives from azetidine family,1,3,3-trinitroazetidine(TNAZ),3-azido-1-nitroaze-tidine(AZNAZ)and 3-azido-1,3-dinitroazetidine(AZDNAZ)have been studied.Burning rate measurements have been performed in a constant-pressure bomb in the pressure range of 0.1-30MPa.A pressure interval has been found within which pressed AZNAZ samples were incapable of sustained burning.Temperature profiles in the combustion wave of TNAZ,AZDNAZ and AZNAZ were measured using thin tungsten-rhenium thermocouples.Thermocouple-aided measurements allowed the determination of the temperature dependence of TNAZ and AZDNAZ vapour pressure in a wide temperature interval,the boiling points at atmospheric pressure and the heat of evaporation.Combustion mechanisms of the energetic materials studied are discussed.