Development of high performance recycled carbon fibre composites with an advanced hydrodynamic fibre alignment process

JOURNAL OF CLEANER PRODUCTION

卷:278

Article

Liu, Zhe^1,2  Turner, Thomas A.²  Wong, Kok H.^2,3  Pickering, Stephen J.² 

[1] Univ Strathclyde, Lightweight Mfg Ctr LMC, Natl Mfg Inst Scotland NMIS, Glasgow PA4 8DJ, Lanark, Scotland

[2] Univ Nottingham, Fac Engn, Composites Res Grp, Nottingham NG8 1BB, England

[3] Univ Nottingham, Adv Composites Ctr, Ningbo 315100, Peoples R China

关键词: Carbon fibre reinforced composites;    Recycling and reuse;    Mechanical properties;    Mechanical testing;   

DOI  :  10.1016/j.jclepro.2020.123785

来源: Elsevier

【 摘 要 】

Carbon fibre composites have great potential for vehicle lightweighting but the high cost and environmental impact of their production tends to largely undermine the advantages in non-aerospace applications. Recycled fibre has the potential to significantly reduce both cost and environmental impact but has yet it has not been widely accepted by the composites industry due to reduced mechanical performance in components as well as the difficulties in handling and processing caused by the fluffy discontinuous form which is quite unlike any current material formats which suit existing processing methods. The developed alignment process allows discontinuous random recycled carbon fibre to be processed into tapes with a highly aligned orientation distribution. This allows composites with high fibre content to be manufactured at lower moulding pressures with the added benefit of keeping fibre length degradation to a minimum. To evaluate the effects of process factors on fibre orientation, a two level full factorial experimental plan was designed. This represents the first time a systematic study of input parameters on final part performance has been published in the open literature. With further improvements to the process, it is shown that it is possible to manufacture a composite achieving high fibre volume content (46%) under 7 bar moulding pressure in an autoclave, exhibiting competitive mechanical properties with almost 100 GPa tensile modulus and over 800 MPa tensile strength. (C) 2020 Elsevier Ltd. All rights reserved.

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