Recycled carbon fibre for high performance energy absorption

Meredith, James O.; Cozien-Cazuc, Sophie; Collings, Ed; Carter, Sam; Alsop, S.; Lever, Jon; Coles, Stuart R.; Wood, Benjamin M.; Kirwan, Kerry

doi:10.1016/j.compscitech.2012.01.017

Cited by 57 publications

(49 citation statements)

References 11 publications

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“…epoxy) matrix; the most common architecture is characterised by a discontinuous and randomly-oriented reinforcement [1]. RCFRPs have been usually characterised at the macro-scale in terms of stiffness and strength [3][4][5][6][7][8]. In a previous study [9], the authors provided new insight by showing that fibre bundles -held together by residual matrix not completely removed during fibre reclamation -locally toughened the material.…”

Section: Introductionmentioning

confidence: 90%

The influence of micromechanical properties and reinforcement architecture on the mechanical response of recycled composites

Pimenta

Pinho

2014

Composites Part A: Applied Science and Manufacturing

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Technologies for recycling carbon-fibre composites are now becoming mature, so a key challenge is to establish applications for the recycled products. This paper aims to further our understanding on the mechanical response of recycled composites, so as to guide the optimisation of recycling processes and support their use in non-critical structural components. This work thoroughly characterises three recycled composites and analyses the relations between fibre and interfacial properties, reinforcement architecture, and macroscopic mechanical response. An unequivocal relationship between the architecture of a recycled composite and its fracture toughness is established; this proves that fibre bundles are not necessarily a recycling defect, but can actually toughen the material by at least up to an order of magnitude without significantly reducing stiffness or strength.

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Section: Introductionmentioning

confidence: 90%

The influence of micromechanical properties and reinforcement architecture on the mechanical response of recycled composites

Pimenta

Pinho

2014

Composites Part A: Applied Science and Manufacturing

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“…Recent work indicates that scaled up processes may induce additional fibre damage [13], although its impact at composite level has not been investigated. Only one recycled woven composite is so far characterised in the literature [12]; results suggest that fibre properties are not directly translated into composite performance. This paper aims therefore at two complementary goals: 1.…”

Section: Introductionmentioning

confidence: 99%

“…ELG-RCF's conveyor-belt pyrolysis [3], can nevertheless preserve the virgin reinforcement architecture. This has been applied by Meredith et al [11,12] to recover structured fabrics from out-of-date woven prepreg rolls (which represent approximately 10% of the CFRP waste currently generated). The recycled weave was then prepreged and used to manufacture components of a racing car.…”

Section: Introductionmentioning

confidence: 99%

The effect of recycling on the mechanical response of carbon fibres and their composites

Pimenta

Pinho

2012

Composite Structures

101

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“…PEG200 has the capability to dissolve the epoxy resin from the CFRP. The percentage of the epoxy in the filtrates was tabulated in TABLE (2). It showed that the highest percentage of epoxy group was when 1.7% NaOH solution was used to catalyse the reaction.…”

Section: Characterisation Of Degraded Epoxy Resinmentioning

confidence: 99%

“…The increasing production of the CFRP contributes to increasing number of pre-preg scrap materials in the form of off-cut, out of specification and out-of-life rolls of prepreg [2]. These wastes are either being dumped in the landfills or being incinerated [3].…”

Section: Introductionmentioning

confidence: 99%

Glycolysis of carbon fiber-epoxy unidirectional mat catalysed by sodium hydroxide

Zaini

Badri

2014

AIP Conference Proceedings

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Abstract. This study was conducted to recycle carbon fibre-epoxy (CFRP) composite in woven sheet/ mat form. The CFRP was recycled through glycolysis with polyethlyene glycol (PEG 200) as the solvent. The CFRP was loaded into the solvent at a ratio of 4:1 (w/w). PEG200 was diluted with water to a ratio of 80:20 (v/v). This reaction was catalysed by sodium hydroxide (NaOH) solution with varying concentrations at 1.5, 1.7 and 1.9% (w/v). The glycolysis was conducted at 180-190 ºC. The recovered CF (rCF) was analysed using Fourier Transform Infrared (FTIR), Scanning Electron Microscopy (SEM) and Energy Dispersive X-Ray (EDX) while the degraded solution was analysed using FTIR and the epoxy content was determined. The FTIR spectrum of the rCF exhibited the disappearance of the COC peak belonged to epoxy and supported by the SEM micrographs that showed clear rCF. On the other hand, the analysed filtrate detected the disappearance of oxygen peak element in the EDX spectrum for all rCF samples. This gave an indication that the epoxy resin has been removed from the surface of the carbon fiber.

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Recycled carbon fibre for high performance energy absorption

Cited by 57 publications

References 11 publications

The influence of micromechanical properties and reinforcement architecture on the mechanical response of recycled composites

The influence of micromechanical properties and reinforcement architecture on the mechanical response of recycled composites

The effect of recycling on the mechanical response of carbon fibres and their composites

Glycolysis of carbon fiber-epoxy unidirectional mat catalysed by sodium hydroxide

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