Effects of the preparation, curing and hygrothermal conditions on the viscoelastic response of a structural epoxy adhesive

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dc.contributor.authorCruz, Ricardopor
dc.contributor.authorCorreia, Luíspor
dc.contributor.authorCabral-Fonseca, Susanapor
dc.contributor.authorSena-Cruz, Josépor
dc.date.accessioned2022-05-30T22:13:11Z
dc.date.available2023-01-01T07:01:10Z
dc.date.issued2021
dc.date.submitted2021
dc.description.abstractThis paper addresses the viscoelastic behaviour of a commercially available cold-curing structural epoxy adhesive, under different preparation, curing and hygrothermal conditions. The main parameters studied were the preparation method (influence of the degassing and the temperature of the initial curing), the creep stress level, and the hygrothermal conditions. Tensile creep tests last up to 2400 hours. Test results revealed that the preparation method has great influence on the tensile properties of the adhesive, particularly on the viscoelastic response where degassing and curing at 20 ºC showed lower creep deformations. Specimens under 98% of relative humidity faced tertiary creep and then rupture. For the adopted levels of creep stress, the adhesive shows a linear creep behaviour, being parameterized using the Burgers and the modified Burgers equations.por
dc.description.abstractThis paper addresses the viscoelastic behaviour of a commercially available cold-curing structural epoxy adhesive, under different preparation, curing and hygrothermal conditions. The main parameters studied were the preparation method (influence of the degassing and the temperature of the initial curing), the creep stress level, and the hygrothermal conditions. Tensile creep tests last up to 2400 hours. Test results revealed that the preparation method has great influence on the tensile properties of the adhesive, particularly on the viscoelastic response where degassing and curing at 20 ºC showed lower creep deformations. Specimens under 98% of relative humidity faced tertiary creep and then rupture. For the adopted levels of creep stress, the adhesive shows a linear creep behaviour, being parameterized using the Burgers and the modified Burgers equations.por
dc.description.sponsorshipThis work was carried out in scope of the project FRPLongDur POCI-01-0145-FEDER-016900 (FCT PTDC/ECM-EST/1282/2014) funded by national funds through the Foundation for Science and Technology (FCT) and co-financed by the European Fund of the Regional Develop-ment (FEDER) through the Operational Program for Competitiveness and Internationalization (POCI) and the Lisbon Regional Operational Program and, partially financed by the project POCI-01-0145-FEDER-007633. This work was also partly financed by FCT/MCTES through national funds (PIDDAC) under the R&D Unit Institute for Sustainability and Innovation in Structural Engineering (ISISE) , under reference UIDB/04029/2020. The authors also like to thank the S&P Clever Reinforce-ment Iberica Lda.com pany for providing the materials. The first author wishes also to acknowledge the grant SFRH/BD/131259/2017 provided by Fundacao para a Ciencia e a Tecnologia (FCT) , while the fourth author acknowledge his sabbatical grant SFRH/BSAB/150266/2019, provided by FCT, financed by European Social Fund and by national funds through the FCT/MCTES.por
dc.distributioninternationalpor
dc.identifier.articlenumber102961por
dc.identifier.citationCruz, R., Correia, L., Cabral-Fonseca, S., & Sena-Cruz, J. (2021). Effects of the preparation, curing and hygrothermal conditions on the viscoelastic response of a structural epoxy adhesive. International Journal of Adhesion and Adhesives, 110, 102961. doi: https://doi.org/10.1016/j.ijadhadh.2021.102961por
dc.identifier.doi10.1016/j.ijadhadh.2021.102961por
dc.identifier.issn0143-7496por
dc.identifier.urihttps://hdl.handle.net/1822/78072
dc.language.isoengpor
dc.peerreviewedyespor
dc.publisherElsevierpor
dc.relationinfo:eu-repo/grantAgreement/FCT/9471 - RIDTI/PTDC%2FECM-EST%2F1282%2F2014/PTpor
dc.relationinfo:eu-repo/grantAgreement/FCT/9471 - RIDTI/PTDC%2FECM-EST%2F1282%2F2014/PTpor
dc.relationinfo:eu-repo/grantAgreement/FCT/POR_NORTE/SFRH%2FBD%2F131259%2F2017/PTpor
dc.relationinfo:eu-repo/grantAgreement/FCT/OE/SFRH%2FBSAB%2F150266%2F2019/PTpor
dc.relation.publisherversionhttps://www.sciencedirect.com/science/article/pii/S0143749621001597por
dc.rightsopenAccesspor
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/por
dc.subjectEpoxy adhesivepor
dc.subjectEpoxy adhesivepor
dc.subjectViscoelasticitypor
dc.subjectViscoelasticitypor
dc.subjectCreeppor
dc.subjectCreeppor
dc.subjectCuring conditionspor
dc.subjectCuring conditionspor
dc.subject.fosEngenharia e Tecnologia::Engenharia Civilpor
dc.subject.odsIndústria, inovação e infraestruturaspor
dc.subject.odsCidades e comunidades sustentáveispor
dc.subject.wosScience & Technologypor
dc.titleEffects of the preparation, curing and hygrothermal conditions on the viscoelastic response of a structural epoxy adhesivepor
dc.typearticle
dspace.entity.typePublicationen
oaire.citationVolume110por
oaire.versionAMpor
sdum.journalInternational Journal of Adhesion and Adhesivespor

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