碳纤维/乙烯基酯树脂复合材料界面性能研究

Study on Interfacial Properties of Carbon Fiber/VinylEster Resin Composites

采用改性上浆剂对SCF-35S-48K碳纤维上浆,分析了上浆工艺对上浆碳纤维的表面形貌和碳纤维/乙烯基酯树脂复合材料界面性能影响。复合材料的微观结构和层间剪切性能结果表明:上浆层对碳纤维起到了一定的保护作用,碳纤维表面平整、可加工性好,与树脂基体的界面黏结性好,复合材料的层间剪切强度达到68.18 MPa,比未上浆碳纤维/乙烯基酯树脂复合材料高7.56%,满足复合材料应用要求。

Modified sizing agent was used to sizing SCF-35S-48K carbon fiber.The sizing process,surface morphology and interfacial properties of carbon fiber/vinyl ester resin composites were analyzed.The results of microstructure and interlayer shear properties of the composites show that:(i)the sizing layer can protect the carbon fiber to a certain extent;(ii)the carbon fiber has flat surface,and good machinability,(iii)the interface adhesion between the carbon fiber and the resin matrix is good,and(iv)the interlayer shear strength of the composite is 68.18 MPa,which is 7.56%higher than that of the unsizing carbon fiber/vinyl ester resin composite,and meets the application requirements of the composite material.