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采用ＤＭＡ（动态机械热分析仪）研究了几种含能粘结剂的机械松弛，从动态力学性能的ＴＴＳ（时温叠加１）原理，求得时间位移与频率对数的关系曲线及ＷＬＦ方程的常数Ｃ１和Ｃ２，应用ＷＬＦ方程，把时间位移与频率对数曲线的拐点作为材料由高弹态变为玻璃态的判据，计算求得火箭发动机点火瞬间粘结剂系统的临界温度Ｔｃ，根据自由体积理论模型和结晶理论解释了Ｔｃ的物理意义。并研究了临界温度与玻璃化转变温度之间的关系
Mechanical relaxation of several energetic binders was investigated by DMA (Dynamic Mechanical Thermal Analyzer). The relationship between time shift and logarithm of frequency and WLF equation were obtained from the principle of dynamic mechanical properties TTS (time-temperature superposition 1) Of the constants C1 and C2, the application of WLF equation, the time shift and the logarithm of the frequency curve as the material from the high-elastic state into the glassy state criterion calculated rocket engine ignition instantaneous binder system critical temperature Tc, The physical meaning of Tc is explained according to the theoretical model of free volume and crystallization theory. The relationship between critical temperature and glass transition temperature was also studied