Combustion of energetic azide polymers

The combustion-wave structures of azide polymers were examined based on the data obtained by burningrate and temperature-profile measurements. The energetic azide polymer evaluated in this study was bis-azide methyl oxetan (BAMO), which contains two —N3 bonds in the molecular structure. BAMO polymer was copolymerized with tetrahydrofuran and cured with an isocyanate and cross-linked to formulate BAMO copolymer. The results indicate that the burning rate of BAMO copolymer increases with increasing the energy density contained within the unit mass of BAMO copolymer samples. The temperature sensitivity of burning rate is three or four times greater than that of conventional solid propellants. The rate of heat release in the gas phase increases as initial temperature increases at constant pressure. The heat transfer process in the combustion wave is correlated with the observed burning-rate characteristics.