Eco-friendly Recycling of Carbon Fiber Reinforced Plastics

탄소섬유강화 복합소재의 친환경 재활용 기술

  • Yu, Ayeong (Department of Chemical Enginering, Konkuk University) ;
  • Bang, Sangpil (Department of Chemical Enginering, Konkuk University) ;
  • Goh, Munju (Department of Chemical Enginering, Konkuk University)
  • 유아영 (건국대학교 화학공학과) ;
  • 방상필 (건국대학교 화학공학과) ;
  • 고문주 (건국대학교 화학공학과)
  • Published : 2021.04.30

Abstract

일반적으로 cross-link된 열경화성 에폭시수지는 유기용매에 용해되지 않고 열에 용융되지 않는 특성이 있다. 따라서 에폭시수지가 사용된 물질, 특히 탄소섬유강화플라스틱(carbon fiber reinforced plastic, CFRP)은 재활용이 어렵고, 사용 후 폐기물 처리에 막대한 비용이 소비되고 있다. 본 원고는 열경화성 에폭시수지 응용물 중 CFRP의 재활용을 중심으로 한 친환경적 재활용 기술에 관하여 정리하였다. 특히, CFRP의 구성요소인 탄소섬유(CF)와 기지재인 에폭시수지를 모두 재활용 할 수 있는 화학적 방법에 관하여 보고한다. 더 나아가 열경화성 에폭시수지의 화학적 분해물의 재이용기술에 관한 예를 소개한다.

Keywords

References

  1. Y. Liu, L. Meng, Y. Huang, and J. Du, Recycling of carbon/epoxy composites, Journal of Applied Polymer Science, 95, 1912-1916 (2004).
  2. Directive 2008/98/EC of the European Parliament and of the Council, Official Journal of the European Union, 4, 322 (2008).
  3. 자원순환기본법(2020. 5. 26 법률 제 17326호).
  4. L. O. Meyer, K. Schulte, and E. Grove-Nielsen, CFRP-recycling following a pyrolysis route: Process optimization and potentials, Journal of Composite Materials, 43, 1121-1132 (2009). https://doi.org/10.1177/0021998308097737
  5. S. J. Pickering, Recycling technologies for thermoset composite materials-current status, Composite: Part A, 37, 1206-1215 (2006). https://doi.org/10.1016/j.compositesa.2005.05.030
  6. E. Lester, S. Kingman, K. H. Wong, C. Rudd, S. Pickering, and N. Hilal, Microwave heating as a means for carbon fibre recovery from polymer composites: A technical feasibility study, Materials Research Bulletin, 39, 1549-1556 (2004). https://doi.org/10.1016/j.materresbull.2004.04.031
  7. R. Pinero-Hernanz, C. Dodds, J. Hyde, J. Garcia-Serna, M. Poliakoff, E. Lester, M. J. Cocero, S. Kingman, S. Pickering, and K. H. Wong, Chemical recycling of carbon fibre reinforced composites in nearcritical and supercritical water, Composite: Part A, 39, 454-461 (2008). https://doi.org/10.1016/j.compositesa.2008.01.001
  8. K. Shibata, and M. Nakagawa, Chemical recycling of carbon fibre reinforced composites in nearcritical and supercritical water, Hitachi Chemical Technical Report, 56, 6-11 (2004).
  9. J. Li, P. Xu, Y. Zhu, J. Ding, L. Xue, and Y. Wang, A promising strategy for chemical recycling of carbon fiber/thermoset composites: self-accelerating decomposition in a mild oxidative system, Green Chemistry, 14, 3260-3263 (2012). https://doi.org/10.1039/c2gc36294e
  10. D. H. Kim, M. Lee, and M. Goh, Enhanced and eco-friendly recycling of carbon-fiber-reinforced plastics using water at ambient pressure, ACS Sustainable Chemistry & Engineering, 8, 2433-2440 (2020). https://doi.org/10.1021/acssuschemeng.9b06371
  11. M. Lee, D. H. Kim, J. Park, N. You, and M. Goh, Fast chemical recycling of carbon fiber reinforced plastic at ambient pressure using an aqueous solvent accelerated by a surfactant, Waste Management, 118, 190-196 (2020). https://doi.org/10.1016/j.wasman.2020.08.014
  12. H. C. Kim, and T. J. Wallington, Life-cycle energy and greenhouse gas emission benefits of lightweighting in automobiles: Review and harmonization, Environmental Science & Technology, 47, 6089-6097 (2013). https://doi.org/10.1021/es3042115