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Carbon fiber‐reinforced composites: Effect of fiber surface on polymer properties by Yoon Suk Ko; William C. Forsman; Theodore S. Dziemianowicz is a Materials Science article available to read on EtoBox.

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## Abstract Dynamic mechanical measurements in a torsional (shear) mode have been used to characterize an unfilled epoxy (Epon 828/m‐phenylene diamine) and A series of uniaxial graphite fiber (Hercules types A and HM) composites. In unfilled resins containing an excess of the epoxy component, M~__c__~—the average molecular weight between crosslinks—decreases with increasing temperature and duration of cure, suggesting a temperature‐dependent side reaction. In fiber‐reinforced composites, the dynamic mechanical response is sensitive to fiber type and curing schedule; elevation of __T__~g~ by as much as 45°C has been observed. Comparison of the dynamic data with properties predicted by micromechanical models shows only a fair agreement at room temperature, which rapidly worsens at higher temperatures. Surface treatment of type A fibers gives enhanced interlaminar shear strength (ILSS), both at ambient conditions and after hydrothermal aging. Dynamic data for surface‐treated systems during hydrothermal aging show a sharper drop in G′ and increase in tan δ. The dynamic data and ILSS results are interpreted in terms of a balance of polymer‐fiber interactions, a weak but widespread prefe

Who reads Carbon fiber‐reinforced composites: Effect of fiber surface on polymer properties?

Author

Yoon Suk Ko; William C. Forsman; Theodore S. Dziemianowicz

Publisher

Society for Plastic Engineers; Wiley (John Wiley & Sons); John Wiley & Sons Inc.; Wiley (ISSN 0032-3888)

Published

1982

Language

EN

Field

Materials Science (Physical Sciences)