Theoretical prediction of storage life for HTPB propellant

Based on the chemical aging mechanisms and the oxidation reaction kinetics of HTPB propellants, the relationships between the strain retention value of propellant and the storage life were first infered. According to the kinetic parameters of oxidant lower temperature decomposition reaction and HTPB cure system oxidation reaction of HTPB propellant,the storage life of propellant under different strain retention value was calculated. When strain retention value of propellant was between 30 percent and 50 percent, the relative errors of storage life between theoretical value and high temperature accelerated aging experimental results were below 16 percent.