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Functionalizing organic powder coatings with nanoparticles through ball milling for wear applications

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dc.affiliation.dptoUC3M. Departamento de Físicaes
dc.affiliation.dptoUC3M. Departamento de Ciencia e Ingeniería de Materiales e Ingeniería Químicaes
dc.affiliation.grupoinvUC3M. Grupo de Investigación: Materiales avanzados para aplicaciones en energía solares
dc.affiliation.grupoinvUC3M. Grupo de Investigación: Comportamiento en Servicio de Materialeses
dc.contributor.authorFernández Álvarez, María
dc.contributor.authorVelasco López, Francisco Javier
dc.contributor.authorBautista Arija, María Asunción
dc.contributor.authorGaliana Blanco, Beatriz
dc.contributor.funderMinisterio de Economía y Competitividad (España)es
dc.date.accessioned2021-02-01T11:58:52Z
dc.date.available2022-05-30T23:00:04Z
dc.date.issued2020-05-30
dc.description.abstractEpoxy powder coatings were functionalized with nanosilica to improve wear resistance. Ten different organic coatings were studied: 0.25&-1% (by wt.) of SiO2 nanoparticles (both hydrophilic -HL- and hydrophilic -HB-) were added to epoxy powders. The homogeneity of the distribution of the silica nanoparticles in the epoxy powder matrix was achieved with an innovative ball-milling mixing method. This homogeneity was confirmed through transmission electron microscopy (TEM) observations. Powder coatings were sprayed and cured on steel sheets. The wear resistance of the coatings was evaluated in reciprocating wear equipment, measuring the depth and the width of the wear tracks obtained by an optoelectronic microscopy. Results reveal very significant improvement in wear resistance, with the best wear performance being observed for the epoxy reinforced with 0.75%HB SiO2 nanoparticles. This is related to the enhanced crosslinking of the matrix in the coatings due to SiO2, as shown by the mechanical properties. The curing kinetics of the functionalized epoxy powders was studied by non-isothermal differential scanning calorimetry (DSC). Activation energies (Ea) calculated from DSC are related to in the diffusion-controlled reactions.en
dc.description.sponsorshipThe authors acknowledge Cubson International Consulting for their help with the coating process. This work was supported by Interreg SUDOE, through the KrEaTive Habitat project, grant number SOE1/P1/E0307 and the Spanish Ministry of Science, Innovation and Universities (MICINN) through the Spanish project RTI2018-101020-B-100.en
dc.description.statusPublicadoes
dc.format.extent20
dc.identifier.bibliographicCitationApplied Surface Science, (2020), 513, 145834.en
dc.identifier.doihttps://doi.org/10.1016/j.apsusc.2020.145834
dc.identifier.issn0169-4332
dc.identifier.publicationfirstpage1
dc.identifier.publicationissue145834
dc.identifier.publicationlastpage20
dc.identifier.publicationtitleAPPLIED SURFACE SCIENCEen
dc.identifier.publicationvolume513
dc.identifier.urihttps://hdl.handle.net/10016/31828
dc.identifier.uxxiAR/0000025702
dc.language.isoengen
dc.publisherElsevier
dc.relation.projectIDGobierno de España. RTI2018-101020-B-100es
dc.rights© 2020 Elsevier B.V. All rights reserved.en
dc.rightsAtribución-NoComercial-SinDerivadas 3.0 España*
dc.rights.accessRightsopen accessen
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/3.0/es/*
dc.subject.ecienciaMaterialeses
dc.subject.otherEpoxy powder coatingen
dc.subject.otherSilica nanoparticlesen
dc.subject.otherTEMen
dc.subject.otherCuring kineticsen
dc.subject.otherWear resistanceen
dc.titleFunctionalizing organic powder coatings with nanoparticles through ball milling for wear applicationsen
dc.typeresearch article*
dc.type.hasVersionAM*
dspace.entity.typePublication
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