采用动态热分析(DMA)方法研究了某丁羟推进剂贮存老化的动态力学性能,借助时间-温度叠加原理,获得时间位移与频率对数的关系曲线及WLF方程的常数,并计算得到固体火箭发动机点火瞬间的推进剂药柱的临界温度tc,并用tc数据预估了发动机点火瞬间推进剂药柱不会由高弹态向玻璃态转变,不会发生断裂与结构完整性破坏。 Dynamic thermal analysis (DMA) was used to study the dynamic mechanical properties of a butylated hydroxyapatite in storage and aging. The relationship between time shift and frequency logarithm and the constant of WLF equation were obtained by the time-temperature superposition principle. The solid rocket Engine ignition moment propellant grains critical temperature tc, and use tc data to predict the moment of ignition of the engine does not propellant grains from high elastic state to the glass transition, fracture and structural integrity failure will not occur.