Author(s)

HIDEAKI KATOGI, KENICHI TAKEMURA

Abstract

In this study, interfacial shear strength of resin particles added to carbon fiber/maleic anhydride grafted polypropylene(MAPP) in a hot-wet environment was investigated. Resin and non-resin particles added carbon fiber/MAPP were immersed in distilled water at 80°C for 14 days. After that, micro-debonding tests of resin and non-resin particles added carbon fiber/MAPP were conducted at room temperature. The number of resin particles in carbon fiber surface after micro debonding tests was calculated by Scanning Electron Microscope(SEM). As a result, the following conclusion was obtained: in the case of immersion for 14 days, the interfacial shear strength of resin particles added to carbon fiber/MAPP increased compared with that of non-resin particles added to carbon fiber/MAPP. From a fracture morphology observation, the total number of resin particles on the carbon fiber surface after an immersion time of 14 days was larger than that in the non-immersion case. This is because water penetrates the interfaces between carbon fiber and MAPP. However, resin particles may prevent water penetrating to the center of the specimen, because the surface area of carbon fiber was increased by the addition of resin particles. Therefore, resin particles on a carbon fiber surface were effective in increasing the interfacial shear strength of carbon fiber/MAPP in a hot-wet environment.

Keywords

interfacial shear strength, carbon fiber, maleic anhydride grafted polypropylene, resin particles addition, water absorption, hot-wet environment