通过光学显微镜观测和流变实验研究了应力弛豫过程中高浓度不相容聚合物共混体系相形态演变与流变性能的关系,发现随体系浓度增大,共混体系内液滴弛豫变慢,同时体系应力弛豫过程变慢,这与高浓度体系中液滴之间相互作用有关.结合有效介质思想提出适用于较高浓度共混体系的形态张量模型,较好地预测了共混体系的相形态与应力弛豫行为. The relationship between morphological evolution and rheological properties of high concentration incompatible polymer blends during stress relaxation was investigated by optical microscopy and rheological experiments. It was found that with the increasing of system concentration, the droplet relaxation relaxation Which is related to the interaction between droplets in high concentration system.According to the idea of ​​effective medium, a morphological tensor model suitable for higher concentration blend system is proposed, Phase Morphology and Stress Relaxation Behavior of Mixed Systems.