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Manufacturing and characterization of coatings from polyamide powders functionalized with nanosilica

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dc.affiliation.dptoUC3M. Departamento de Ciencia e Ingeniería de Materiales e Ingeniería Químicaes
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.authorLobo, Flavia Cristina M.
dc.contributor.authorFernandes, Emmanuel M.
dc.contributor.authorReis, Rui L.
dc.date.accessioned2021-02-03T16:01:05Z
dc.date.available2021-02-03T16:01:05Z
dc.date.issued2020-10-08
dc.description.abstractPolyamide coatings are thermoplastics with great advantages such as a good corrosion protection of the base metal and wear resistance. Their application as powder coatings is an environmentally friendly option that is currently attracting growing interest. However, during their life service, they can sometimes be exposed to conditions that they are unable to stand. In this work, a polyamide 11 (PA11) powder was reinforced with different percentages of silica nanoparticles (1-3 wt. %). Powder mixtures were prepared through extrusion followed by compression molding processes to manufacture coatings. For the coatings under study, the effect of 500 h xenon exposure was studied in order to know their ultraviolet (UV) resistance. Attenuated total reflection-Fourier transform infrared spectroscopy (FTIR-ATR) and differential scanning calorimetry (DSC) tests were performed to study changes in polymer structure and if they are affected by nanoparticles. The effect of nanoadditions and xenon exposure on hardness and stiffness were also evaluated. Furthermore, reciprocal wear tests were performed before and after irradiation, and the wear tracks were analyzed using optoelectronic microscopy and scanning electron microscopy (SEM). Finally, the aesthetic properties were measured. The results reveal improvements in mechanical and wear properties when 1% nanosilica is added to the PA11, which then become more relevant after xenon radiation exposure.en
dc.description.sponsorshipThis research was funded by Interreg SUDOE, through KrEaTive Habitat project (grant SOE1/P1/E0307).en
dc.format.extent20es
dc.identifier.bibliographicCitationPolymers, 12(10), 2298, Oct. 2020, 20 pp., special Issue "State-of-the-Art Polymer Science and Technology in Spain (2020,2021)"en
dc.identifier.doihttps://doi.org/10.3390/polym12102298
dc.identifier.issn2073-4360
dc.identifier.publicationfirstpage1es
dc.identifier.publicationissue10, 2298es
dc.identifier.publicationlastpage20es
dc.identifier.publicationtitlePolymersen
dc.identifier.publicationvolume12es
dc.identifier.urihttps://hdl.handle.net/10016/31856
dc.identifier.uxxiAR/0000026142
dc.language.isoengen
dc.publisherMDPIen
dc.relation.projectIDinfo:eu-repo/grantAgreement/EC/KrEaTive Habitat - SOE1/P1/E0307en
dc.rights© 2020 by the authors. Licensee MDPI, Basel, Switzerland.en
dc.rightsThis article is an open access article distributed under the terms and conditions of the Creative Commons Attributionen
dc.rightsAtribución 3.0 España*
dc.rights.accessRightsopen accessen
dc.rights.urihttp://creativecommons.org/licenses/by/3.0/es/*
dc.subject.ecienciaMaterialeses
dc.subject.otherPolyamideen
dc.subject.otherPowder coatingen
dc.subject.otherSilica nanoparticlesen
dc.subject.otherXenon weatheringen
dc.subject.otherMechanical propertiesen
dc.subject.otherWear resistanceen
dc.titleManufacturing and characterization of coatings from polyamide powders functionalized with nanosilicaen
dc.typeresearch article*
dc.type.hasVersionVoR*
dspace.entity.typePublication
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