环氧树脂是一种性能优良且应用广泛的高分子材料,近年来,人们对已固化环氧试样在玻璃化温度(T_g)以下贮存时,物理性能随时间而变化的物理老化现象进行了广泛的研究.Ophir等发现已固化环氧试样经淬火处理后,其T_g随贮存时间升高,认为是由于自由体积随贮存时间减小所致.Mijovic用不同的方法进行过类似的研究,发现淬火环氧试样的T_g随贮存时间降低,认为是由于试样中的内应力松弛所致.本文试图进一步搞 Epoxy resin is a good performance and widely used polymer materials, in recent years, the people of the cured epoxy samples stored below the glass transition temperature (T_g), the physical properties of physical aging over time changes were carried out Extensive research.Ophir et al found that cured epoxy samples after quenching, the T_g with the storage time, that is due to the free volume with the reduction of storage time.Mijovic conducted a similar study by different methods, It is found that the T_g of quenched epoxy sample decreases with the storage time, which is attributed to the relaxation of internal stress in the sample.This paper attempts to further