Abstract
In this paper, low temperature oxygen plasma treatment method was adopted to process the carbon fiber surface and ILSS and Flexural Strength test method were utilized to represent the interfacial shear strength and flexural strength of CF/PES-C composite material. By aid of SEM, this paper observed the interfacial shear and flexural failure morphology of CF/PES-C composite material. Then this paper compared the hygroscopicities and strength retention rates of CF/PES-C composite material before and after the plasma treatment. Results showed that the optimum treatment conditions of carbon fiber were 300W treatment power and 15-minute treatment time. Under this kind of condition, the highest ILSS value of the composite material shall be improved by 24.9% and the highest flexural strength value be increased by 19.55%. After the proper plasma treatment, the interface adhesive property of carbon fiber and PES-C resin matrix can be strengthened, which will further improve the mechanical properties of composite materials.
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