期刊
COMPOSITE STRUCTURES
卷 94, 期 12, 页码 3669-3684出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.compstruct.2012.05.024
关键词
Recycling; Carbon fibre reinforced polymers; Mechanical analysis
资金
- Portuguese Foundation for Science and Technology [SFRH/BD/44051/2008]
- Fundação para a Ciência e a Tecnologia [SFRH/BD/44051/2008] Funding Source: FCT
The development of processes for recycling carbon-fibre composite waste rises a question yet to be answered: how good can the performance of recycled composites be? This paper analyses fibres reclaimed in commercial facilities, and compares the performance of subsequently manufactured recycled woven composites to that of the virgin precursor (with the same fibre architecture). Different pyrolysis cycles resulted into different compromises between complete resin removal and full fibre strength retention. At the composite level, this paper shows how strength varies with the reclamation cycle, re-impregnation process and loading direction, while stiffness remains virtually unaffected. It is shown that composite tensile strength is favoured by gentle pyrolysis cycles generating little fibre damage, while compressive strength is fully retained after more aggressive cycles which completely remove the matrix. This work proves that the mechanical response of recycled composites can rival that of virgin precursors, while highlighting the benefits of application-driven optimisation of reclamation processes. (C) 2012 Elsevier Ltd. All rights reserved.
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