2022 Volume 101 Issue 10 Pages 196-204
The pyrolysis (carbonization) kinetics of carbon fiber reinforced epoxy resin (CFRER) in addition to the effects of its carbonization condition on the calorific values of product gas/tar and the characteristic of recycled carbon fiber (CF) were examined using a commercial thermogravimetric differential thermal analyzer in addition to a lab-scale carbonization reactor in order to optimize the carbonization condition in the recycle process with the carbonization and calcination of carbon fiber reinforced plastic wastes (CFRP). In addition, the optimization of a carbonization condition of CFRER in a bench-scale carbonization reactor was attempted. A higher carbonization temperature and presence of superheat steam increased the calorific values of product gas/tar in the carbonization of CFRER. CF recycled in the carbonization of CFRER at a temperature less than 500 °C was scarcely deteriorated. The pyrolysis kinetics of CFRER were slower than those of nylon and polypropylene resin. The optimization of a carbonization condition of CFRER in the bench-scale carbonization reactor resulted in the highest carbonization temperature of 420 °C and the self-sustained carbonization energy of CFRER by the increase in the use of exhaust heat.
