通过对非晶高聚物动态力学方法和前人的静态法（如膨胀计法或量热法）实验结果的比较，指出：用静态法测得的玻璃化转变温度Ｔｇ和用动态力学法测得的α内耗峰的峰温Ｔα虽然在温度上很接近，但物理本质不同，并对引起这种不同的微观物理机制作了一定的探讨． By comparing the experimental results of the dynamic mechanical method of amorphous polymers with those of the predecessors, such as the dilatometer method or the calorimetry method, it is pointed out that the glass transition temperature Tg measured by the static method and the dynamic mechanical method Although the peak temperature T α of the internal friction peak is very close in temperature, its physical essence is different, and some different micro-physical mechanisms are discussed.