Carbon fibers composites are well-known as high tech materials but are also recognized
as a problem after use as they have to be deposited in landfills. Pyrolysis is
an attractive process for recycling carbon fibers from used composites as well
as offcuts from prepregs. Pyrolysis of carbon fiber composite prepregs is
carried out in a pilot plant with a single screw reactor. The pyrolysis
products, carbon fibers and pyrolysis vapor are fully characterized. Variation
of pyrolysis temperature is carried out to obtain carbon fibers with the best
possible surface properties. In order to compare the mechanical properties of
the recycled carbon fibers with virgin material, composite materials with
polyamide are produced and their properties compared.
References
[1]
Yatim, N.M., Shamsudin, Z., Shaaban, A., Ghafar, J.A. and Khan, M.J.H. (2020) Recovery of Carbon Fiber from Carbon Fiber Reinforced Polymer Waste via Pyrolysis. Journal of Advanced Manufactoring Technology, 14, 37-47.
[2]
Giorgini, L., Benelli, T., Mazzocchetti, L., Leonardi, C., Zattini, G., Minak, G., Dolcini, E., Tosi, C. and Montanari, I. (2014) Pyrolysis as a Way to Close a CFRC Life Cycle: Carbon Fibers Recovery and Their Use as Feedstock for a New Composite Production. Proceedings of the 7th International Conference on Times of Polymers (TOP) and Composites, Ischia, Italy, 22-26 June 2014, 354-357.
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Feng, N., Wang, X. and Wu, D. (2013) Surface Modification of Recycled Carbon Fiber and Its Reinforcement Effect on Nylon 6 Composites, Mechanical Properties, Morphology and Crystallization Behaviors, Current Applied Physics, 13, 2038-2050.
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