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用差示热分析（DSC）方法研究了由胺端基或苯端基封端的两种聚醚酰亚胺改性的环氧树脂的物理老化．改性及未改性的环氧体系在150℃的热焓松弛数据表明：该体系的松弛程度及松弛速率与聚醚酰亚胺端基有密切的关系．同时发现，溶度参数及相结构是影响两组分体系物理老化的重要因素．
The physical aging of two polyetherimide-modified epoxy resins terminated with amine end groups or benzene end groups was investigated by Differential Thermal Analysis (DSC). The data of enthalpy relaxation at 150 ℃ for the modified and unmodified epoxy systems show that the degree of relaxation and the relaxation rate of the system are closely related to the polyetherimide end groups. At the same time, it is found that the solubility parameter and the phase structure are important factors affecting the physical aging of the two component systems.