Polyamide coating on carbon fibres and potential application in carbon/kevlar/epoxy hybrid composites

Abstract

Hybrid unidirectional composite materials, consisting of alternately laminated layers of Kevlar-49 fibres and carbon fibres in an epoxy resin, have been studied. Before embedding, the carbon fibres were coated with a Nylon 6,6 film by an interfacial in-situ polymerization technique. Emphasis is given to the mechanical properties of the hybrid composites based on coated carbon, with those based on uncoated carbon, for various values of partial volume fraction of the carbon fibres, V cf, polyamide content deposited on the carbon fibres, C N, and total fibre (Kevlar + carbon) volume fraction, V f.