Effects of Nano-materials on Combustion Properties of DB and CMDB Propellants

In order to investigate the effects of three kinds of nano-materials,nano-composite(n-DPN),nano-AlN and nano-Al powder,on the combustion properties of DB propellant,CMDB propellant containing RDX and CMDB propellant containing HMX / Al powder,the propellant samples were prepared by extraction and rolling method.The burning rates of propellants were measured by strand buner method.The results show that the nano-composite(n-DPN) makes a mesa burning effect appear for the CMDB propellants containing HMX / Al powder in the pressure range of 15-20MPa,burning rate at pressure of 10MPa exceed 24mm / s and the pressure exponent in the pressure range of 10-20MPa be 0.08.The burning rate of the CMDB propellant containing RDX can be reduced by 5mm / s when 2.6% AlN is added.The burning rate of DB will increase between 2-12MPa and be reduced between 1520MPa,the pressure exponent in the pressure range of 8-20MPa is reduced when 0.5% nano-Al powder is added.