| 초록 |
The application of carbon fiber composites has been increased with the demand for lighter ground vehicles and aircraft, and the amount of wastes resulting from this has been continuously increasing. Existing carbon fiber recovery method is a thermally oxidizing method of waste CFRP in an oxygen and nitrogen atmosphere, requiring a high temperature of 800℃ and a long process of 8 h, thus consuming high energy. Therefore, it is required to develop a fast recovery process that can recover carbon fibers with relatively low energy consumption. In this work, we used steam as an oxidant for resin removal in the CFRP at medium temperature range (600~800℃). Recovery yield, surface morphologies, and mechanical properties including tensile strength and modulus of recovered carbon fbers were measured in order to evaluate the efficiency of fast recovery process of waste CFRPs. In conclusion, the rCF which have over 65% and 100% of original tensile strength and modulus. |
