炭素繊維強化プラスチックの電解酸化法における電解液の検討

Abstract

In order to recover carbon fiber from CFRP (Carbon Fiber Reinforced Plastics), the effect of electrolyte solution in the electrochemical oxidation treatment of the unidirectional CFRP was investigated. A two-electrode cell using a CFRP monolayer as an anode was used for the treatment. As a result, the weight loss of the CFRP depended on the treatment time, although the carbon fiber was damaged in case of over 15 h treatment. From the damage mechanism estimation based on the observation of the CFRP after the treatment, it was suggested that the generation of localized high electric field caused the damage of carbon fiber recovered from the CFRP. From the investigation of the electrolyte solution and the its pH, a clear correlation between the weight loss and the electrolyte solution was not obtained.