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Thermal recycling of glass fibre composites: A Circular Economy Approach

2023Journal article Open access
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dc.contributor.authorIglésias, Maria
dc.contributor.authorSantos, Paulo
dc.contributor.authorLima, Tânia M.
dc.contributor.authorLeite, Laura
dc.date.accessioned2024-01-26T10:37:02Z
dc.date.available2024-01-26T10:37:02Z
dc.date.issued2023
dc.description.abstractComposite materials are used in a wide range of applications, but due to their inherent nature of heterogeneity, particularly for thermoset-based polymer composites, their recycling is a problem, and their life cycle management remains one, too. This study applies a circular economy approach to the problem of excess waste of glass fibre (GF) composites and seeks a solution by testing a methodology for thermal recycling of GF composites by combining different times and temperatures. Through the by-hand lay-up process, diverse laminates were manufactured with recycled GF, and the mechanical results were compared with those of the control laminate; in this way, we sought to reinsert recycled fibres into a new life cycle, closing the loop of the material. The static properties, tensile tests, and three-point bending (3PB) tests were studied as well as the viscoelastic behaviour of the recycled fibres and respective laminates. For woven fibres, we highlight the recycling process at 600 °C for 15 min, which revealed a loss of only 15.3% of the tensile strength. The laminates with fibres recycled at 400 °C for 180 min presented a reduction of 52.14% and 33.98% for tensile and flexural strength, respectively, representing the best solution. For all laminates, the bending stress, stiffness, and strain are sensitive to the strain rate, and the tendency observed for these properties can be supported by linear models. Subsequently, for the best results, the stress–relaxation and creep behaviour were analysed, and it is possible to conclude that temperature and time of fibre recycling influence the viscoelastic response of laminates.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationIglésias, M.; Santos, P.; Lima, T.M.; Leite, L. Thermal Recycling of Glass Fibre Composites: A Circular Economy Approach. Sustainability 2023, 15, 1396. https:// doi.org/10.3390/su15021396pt_PT
dc.identifier.doi10.3390/su15021396pt_PT
dc.identifier.urihttp://hdl.handle.net/10400.6/14163
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherMDPIpt_PT
dc.relationCentre for Mechanical and Aerospace Science and Technologies
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt_PT
dc.subjectCircular economypt_PT
dc.subjectGlass fibre compositespt_PT
dc.subjectThermal recyclingpt_PT
dc.subjectMechanical characterisationpt_PT
dc.subjectViscoelastic behaviourpt_PT
dc.titleThermal recycling of glass fibre composites: A Circular Economy Approachpt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleCentre for Mechanical and Aerospace Science and Technologies
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDB%2F00151%2F2020/PT
oaire.citation.issue15pt_PT
oaire.citation.startPage1396pt_PT
oaire.citation.titleSustainabilitypt_PT
oaire.citation.volume2pt_PT
oaire.fundingStream6817 - DCRRNI ID
person.familyNamePina dos Santos
person.familyNameLima
person.givenNamePaulo Sérgio
person.givenNameTânia
person.identifier1710267
person.identifier.ciencia-id771E-3B60-A936
person.identifier.orcid0000-0001-9026-5966
person.identifier.orcid0000-0002-7540-3854
person.identifier.ridV-5052-2017
person.identifier.scopus-author-id48661120000
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
relation.isAuthorOfPublicationb175c7c6-f6f4-4848-95e0-6059bfbcf58d
relation.isAuthorOfPublicationef58bc1e-8e06-46cc-93e3-bba8e6ed8388
relation.isAuthorOfPublication.latestForDiscoveryb175c7c6-f6f4-4848-95e0-6059bfbcf58d
relation.isProjectOfPublicationc1aeadcb-d7fa-4d70-959a-2447dc0b2276
relation.isProjectOfPublication.latestForDiscoveryc1aeadcb-d7fa-4d70-959a-2447dc0b2276

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