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Electropolymerization on Carbon Fibers - Effects on Composite Properties

Raranasamudram V. SubramanianJames J. Jakubowski

出版	Department of Materials Science & Engineering, Washington State University, 1976
URL	http://books.google.com.hk/books?id=_vu1NwAACAAJ&hl=&source=gbs_api

註釋Interface tailoring in carbon fiber-polymer composites by means of electrochemical polymerization has been investigated. It was expected that fiber-matrix adhesion and composite mechanical properties can be modified by the electrochemical formation of polymer layers of varying structure and properties on carbon fibers prior to their incorporation in a polymer matrix. Techniques were developed first for producing thin polymer coatings on carbon fibers by using the latter as electrodes in an electrolytic cell containing the monomer. Composite specimens were prepared by the incorporation of the coated fibers in an epoxy matrix. It was demonstrated that, in fact, the effect of the surface treatment on the interfacial properties of the resulting composite was manifested in variations of the measured interlaminar shear and impact strengths of the composite specimens. The increase in interlaminar shear was considered to be the result of improved fiber-matrix adhesion when compared to composite specimens prepared from untreated carbon fibers. The corresponding reversed trend in impact strength values was attributed to the effect of excessive fiber-matrix adhesion in causing brittle failure of the composite. It was significant, when in exception to this general trend, it was also found that both interlaminar shear and impact strengths could simultaneously be increased.