摘要
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 D. S. C (differential scanning calorimitery) and laser scattering instrument were employed to study the physical ageing behavior of two kinds of modified epoxy, which was modified with amino-terminated and phenyl-terminated polyetherimides respectively.The enthalpy data of modified epoxy ageing at 150℃ show that the extent and rate of enthalpy relaxation are closely related to the end group of the modifiers. It also shows that the solubility parameter and the morphology are two important factors affecting phySical ageing of binary system.
出处
《复旦学报（自然科学版）》
CAS
CSCD
北大核心
1997年第2期219-226,共8页
Journal of Fudan University：Natural Science
基金
国家自然科学基金
关键词
物理老化
聚醚酰亚胺
环氧树脂
热焓松弛
改性
physical ageing
polyetherimides
epoxy resin
enthalpy relaxation
curve fitting
