2023-10-27 ニューサウスウェールズ大学(UNSW)
◆これにより、炭素繊維のリサイクルが環境に優しく経済的になり、自動車産業などでの利用が可能になります。これは、製品の寿命が尽きた際の廃棄物を削減し、持続可能な選択肢を探求する一環として重要な研究です。
＜関連情報＞
- https://newsroom.unsw.edu.au/news/science-tech/carbon-copy-new-method-recycling-carbon-fibre-shows-potential
- https://www.sciencedirect.com/science/article/pii/S1359835X23003251?via%3Dihub
繊維構造保存による再生CFRP自動車部品の機械的性能とライフサイクル環境性能の向上 Improving mechanical and life cycle environmental performances of recycled CFRP automotive component by fibre architecture preservation
Di He, Hyung Chul Kim, Silvano Sommacal, Filip Stojcevski, Vi Kie Soo, Wojciech Lipiński, Evgeny Morozov, Luke C. Henderson, Paul Compston, Matthew Doolan
Composites Part A: Applied Science and Manufacturing Available online 18 August 2023
DOI:https://doi.org/10.1016/j.compositesa.2023.107749
Highlights
•CFRP with preserved unidirectional and woven recycled carbon fibres.
•Four-fold enhancement in flexural properties than current recycled CFRP.
•Life cycle energy and carbon emission benefits when used in a vehicle roof panel.
•Recycling with fibre architecture preservation as a sustainable future option for CFRP.
Abstract
Recycled carbon fibre reinforced polymer (rCFRP) is attracting interest for automotive applications but has reduced mechanical properties due to a loss of intact fibre architecture. This study investigates the effects of fibre architecture preservation during recycling of carbon fibres on the mechanical and life cycle environmental performances of rCFRP applied to a vehicle roof panel. Results show that rCFRPs with preserved unidirectional and woven fibre architectures have average flexural properties at least 4 times higher than those of current rCFRP with unpreserved fibre architecture. A hypothetical rCFRP roof panel with preserved plain woven rCF reduces the life cycle greenhouse gas emissions by 11% and 23% compared to the current rCFRP, respectively, when used in gasoline vehicle and battery electric vehicle. This paper demonstrates that the recycling approach with fibre architecture preservation offers great opportunities to improve the mechanical and environmental performances of rCFRP for use in the automotive industry.
