短碳纤维增强聚芳醚酮断面形态的研究

Studies on Fracture Morphology of Short Carbon Fiber Reinforced Poly(phenylene ether ketone)(SCF/PEK C) Composites

复合材料的强度是通过基体和纤维之间的应力传递获得的．这种传递可通过基体和纤维之间机械的、物理的和化学的结合来实现．因此，复合材料的界面结合很重要，它直接影响碳纤维在复合材料中的增强效率．短纤维在基体中由于其末端较多，其内部更易形成应力集中［１～４］．...

The shear fracture morphology of SCF/PEK C composite with carbon fibers treated for different times was studied carefully by SEM. The result shows that the adhesion between fiber and matrix was improved and fractured model also changed from interface fracture to brittle fracture with increasing treatment time of carbon fiber.The fracture mechanism was discussed prelimiary.