Influence of Fiber’s Surface State on Mechanical Properties and Fiber-Matrix Interaction of CFRP

Abstract:

In order to investigate the influence of carbon fiber’s surface state on the mechanical properties and the fiber-matrix interaction of CFRP, the change of surface state was achieved by thermal treatment of carbon fibers at elevated temperatures, and the surface state was characterized by XPS. The mechanical properties were measured from the flexural test. The CFRP reinforced with 600 °C treated fabrics containing the highest reactive functional groups, showed the highest flexural strength and modulus. But in the case of CFRP reinforced with 1500 °C treated fabrics containing the lowest reactive functional groups, exhibited the lowest flexural strength and modulus. Combining the mechanical properties with the microstructure analysis, the results indicated that the fiber-matrix interaction (strong or weak) depends on the relative percentage of reactive functional groups present on the carbon fiber surface.

• Periodical: Advanced Materials Research (Volumes 690-693)
• Pages: 323-328
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.690-693.323
• Online since: May 2013
• Authors: J. J. Sha, Y.X. Zhang, J. Li, J. X. Dai, Z. Q. Wei, J. Hausherr, W. Krenkel
• Keywords: Fiber-Matrix Interaction, Mechanical Property, Surface Functional Groups

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