Modification on Combustion Properties of DNTF-CMDB Propellant

In order to reduce the pressure exponent of DNTF-CMDB propellant,the effects of various factors on combustion properties of CMDB propellants containing DNTF were investigated,such as catalysts,the ratio of NC and NG,plasticizers and interior ballistics stabilizers.The results show that the pressure exponent of the propellant can be obviously decreased by the composite catalyst system of aromatic lead salts and aliphatic copper salts.The pressure exponent of the propellant can be decreased with an decrease in the NG content.The pressure exponent of propellants containing triethylene glycol dinitrate(TEGDN) is less than that of propellants containing NG.The pressure exponent of propellants containing MgO is less than that of propellants containing Al2O3.