The growing use of carbon fibre reinforced polymers (CFRP) in the aerospace and wind industries is leading to increases in waste carbon fibres. The current recycling practice for this waste results in significant reductions in material properties. Preserving the reinforcement architecture of carbon fibre has the potential to enhance the mechanical reinforcement capability of the recycled fibre. Nevertheless, the impact of this approach on different woven fibre architectures with varying material characteristics remains unclear. This study presents an observation on applying fibre architecture preservation to the recycling of carbon fibres in two woven fibre architectures, namely twill and satin weaves. Carbon fibres are recycled by a pyrolysis technique and remanufactured into recycled CFRP. Flexural tests indicate increases in the flexural properties of CFRP with twill and satin weaves after recycling, differing from the results for plain weave in a previous study. The results suggest potential influences of weave architectures on the material compositions of the recycled composites, resulting in different flexural properties. Further research is encouraged to investigate the potential correlations and provide deeper insights into the use of this approach to reduce the down-cycling of various types of carbon fibre.

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Reducing the Down-Cycling of Carbon Fibre: An Observation on Preserving Different Woven Fibre Architectures

  • Di He,
  • Isaiah Pang,
  • Matthew Doolan

摘要

The growing use of carbon fibre reinforced polymers (CFRP) in the aerospace and wind industries is leading to increases in waste carbon fibres. The current recycling practice for this waste results in significant reductions in material properties. Preserving the reinforcement architecture of carbon fibre has the potential to enhance the mechanical reinforcement capability of the recycled fibre. Nevertheless, the impact of this approach on different woven fibre architectures with varying material characteristics remains unclear. This study presents an observation on applying fibre architecture preservation to the recycling of carbon fibres in two woven fibre architectures, namely twill and satin weaves. Carbon fibres are recycled by a pyrolysis technique and remanufactured into recycled CFRP. Flexural tests indicate increases in the flexural properties of CFRP with twill and satin weaves after recycling, differing from the results for plain weave in a previous study. The results suggest potential influences of weave architectures on the material compositions of the recycled composites, resulting in different flexural properties. Further research is encouraged to investigate the potential correlations and provide deeper insights into the use of this approach to reduce the down-cycling of various types of carbon fibre.