Abstract
Polypyrrole (PPy) was deposited onto carbon fibres via continuous electrochemical deposition (ECD) to improve the interfacial bonding to an epoxy matrix. In addition, heat shock was applied to the polypyrrole-deposited fibre. The specimens were evaluated by scanning electron microscopy (SEM), tensile strength measurement, interlaminar shear stress (lLSS) tests, and critical fihre length determination. The results show that the highest interfacial honding between carbon fibre and epoxy resin was achieved with a current density of 80 mA/cm2 and using tetra-n-butylammonium perchlorate as the supporting electrolyte. After ECD treatment of carbon fibre, the ILSS can be increased by 50% and the critical fihre length can be reduced by 34%.
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