Microwave degradation of carbon fiber reinforced plastics in choline chloride

Microwave degradation of carbon fiber reinforced plastics in choline chloride

KAZUTOSHI Ikenaga, MASYU Miyakawa, KATSUKI Kusakabe

download PDF

Abstract. In spite of resin recycling of carbon fiber reinforced plastics (CFRP) is very important as well-known on the viewpoint of environmental protection and resource conservation, the development of effective resin recycling had hardly been investigated. In this study, we investigated the operating conditions for microwave decomposition of CFRP using various alcohols as solvents. In order to avoid rapid absorption of microwaves into carbon fibers (CF), choline chloride was added to the solvent for microwave degradation. Ethylene glycol monoallyl ether (EGMA) was used as a solvent in order to reuse the resin part. Double bonds could be introduced into the resin degradation products. The preparation of cured products by condensation reaction by using the resin degradation products was also successful.

Microwave, Degradation, Carbon Fiber Reinforced Plastics, Choline Chloride, Chemical Recycling

Published online 5/20/2023, 8 pages
Copyright © 2023 by the author(s)
Published under license by Materials Research Forum LLC., Millersville PA, USA

Citation: KAZUTOSHI Ikenaga, MASYU Miyakawa, KATSUKI Kusakabe, Microwave degradation of carbon fiber reinforced plastics in choline chloride, Materials Research Proceedings, Vol. 29, pp 43-50, 2023

DOI: https://doi.org/10.21741/9781644902516-6

The article was published as article 6 of the book Sustainable Processes and Clean Energy Transition

Content from this work may be used under the terms of the Creative Commons Attribution 3.0 license. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.

[1] S. Pimenta, S.T. Pinho, Recycling carbon fibre reinforced polymers for structural applications: technology review and market outlook, Waste Management, 31 (2011) 378-392; https://doi.org/10.1016/j.wasman.2010.09.019
H. Sukanto, W. W. Raharjo, D. Ariawan, J. Triyono, Carbon fibers recovery from CFRP recycling process and their usage: A review, 2021 IOP Conference Series Materials Science and Engineering, 1034, 012087. https://doi.org/10.1088/1757-899X/1034/1/012087
[2] H. Itazu, H. Kamiyoshi, H. Moritomi, Recycling of Carbon Fiber using Two-stage Thermal Treatment System, Haikibutu shigenjunkan gakkaishi, 24 (2013) 371-378; H. Itazu, M. Itazu, H. Moritomi, Apparatus for regenerative treatment of carbon fiber, JP4949123. https://doi.org/10.3985/mcwmr.24.371
[3] I. Okajima, K. Watanabe, S. Haramiishi, M. Nakamura, Y. Shimamura, T. Sako, Recycling of carbon fiber reinforced plastic containing amine-cured epoxy resin using supercritical and subcritical fluids Author links open overlay panel, J. Supercrit. Fluids, 119 (2017) 44-51; https://doi.org/10.1016/j.supflu.2016.08.015
I. Okajima, K. Yamada, T. Sugeta, T. Sako, Decomposition of epoxy resin and recycling of CFRP with sub- and supercritical water, Kagaku Kogaku Ronbunshu, 28 (2002) 553-558. https://doi.org/10.1252/kakoronbunshu.28.553
[4] L. Weihao, H. Haihong, L. Yun, L. Lei, C. Huanbo, L. Zhifeng, Life cycle assessment and energy intensity of CFRP recycling using supercritical N-butanol, Journal of Material Cycles and Waste Management, 23 (2021) 1303-1319. https://doi.org/10.1007/s10163-021-01206-7
[5] K. Shibata, CFRP Recycling Technology using Depolymerization of Epoxy Resin under Ordinary Pressure, Hitati-Kasei Tecnical Report, 24 (2013) 358-363. https://doi.org/10.3985/mcwmr.24.358
[6] D. Jianying, X. Lei, Z. Libo, P. Jinhui, G. Shenghui, L. Jianhua, K. Sivasankar, Recycling of carbon fibers from CFRP waste by microwave thermolysis, Processes (2019), 7(4), 207. https://doi.org/10.3390/pr7040207
[7] K. Ikenaga, H. Nagamitsu, T. Kikukawa, K. Kusakabe, A new recycling process for recycled plastic production from glass fiber reinforced plastics, 2018 OP Conference Series Materials Science and Engineering, 458, 012034. https://doi.org/10.1088/1757-899X/458/1/012034