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Multiply fully recyclable carbon fibre reinforced heat-resistant covalent thermosetting advanced composites

Author

Listed:
  • Yanchao Yuan

    (College of Materials Science and Engineering, South China University of Technology)

  • Yanxiao Sun

    (College of Materials Science and Engineering, South China University of Technology)

  • Shijing Yan

    (College of Materials Science and Engineering, South China University of Technology)

  • Jianqing Zhao

    (College of Materials Science and Engineering, South China University of Technology)

  • Shumei Liu

    (College of Materials Science and Engineering, South China University of Technology)

  • Mingqiu Zhang

    (Key Laboratory for Polymeric Composite and Functional Materials of Ministry of Education, School of Chemistry and Chemical Engineering, Sun Yat-sen University)

  • Xiaoxing Zheng

    (College of Materials Science and Engineering, South China University of Technology)

  • Lei Jia

    (College of Materials Science and Engineering, South China University of Technology)

Abstract

Nondestructive retrieval of expensive carbon fibres (CFs) from CF-reinforced thermosetting advanced composites widely applied in high-tech fields has remained inaccessible as the harsh conditions required to recycle high-performance resin matrices unavoidably damage the structure and properties of CFs. Degradable thermosetting resins with stable covalent structures offer a potential solution to this conflict. Here we design a new synthesis scheme and prepare a recyclable CF-reinforced poly(hexahydrotriazine) resin matrix advanced composite. The multiple recycling experiments and characterization data establish that this composite demonstrates performance comparable to those of its commercial counterparts, and more importantly, it realizes multiple intact recoveries of CFs and near-total recycling of the principal raw materials through gentle depolymerization in certain dilute acid solution. To our best knowledge, this study demonstrates for the first time a feasible and environment-friendly preparation-recycle-regeneration strategy for multiple CF-recycling from CF-reinforced advanced composites.

Suggested Citation

  • Yanchao Yuan & Yanxiao Sun & Shijing Yan & Jianqing Zhao & Shumei Liu & Mingqiu Zhang & Xiaoxing Zheng & Lei Jia, 2017. "Multiply fully recyclable carbon fibre reinforced heat-resistant covalent thermosetting advanced composites," Nature Communications, Nature, vol. 8(1), pages 1-11, April.
    • Handle: RePEc:nat:natcom:v:8:y:2017:i:1:d:10.1038_ncomms14657
    DOI: 10.1038/ncomms14657
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    Cited by:

    1. Bo Qin & Siyuan Liu & Zehuan Huang & Lingda Zeng & Jiang-Fei Xu & Xi Zhang, 2022. "Closed-loop chemical recycling of cross-linked polymeric materials based on reversible amidation chemistry," Nature Communications, Nature, vol. 13(1), pages 1-9, December.

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