Hindering the decrease in wear resistance of UV-exposed epoxy powder coatings by adding nano-SiO2 through ball milling

Fernández Álvarez, María; Velasco López, Francisco Javier; Torres Carrasco, Manuel; Bautista Arija, María Asunción

Publication:
Hindering the decrease in wear resistance of UV-exposed epoxy powder coatings by adding nano-SiO2 through ball milling

carlosiii.embargo.terms	2023-09-15
dc.affiliation.dpto	UC3M. Departamento de Ciencia e Ingeniería de Materiales e Ingeniería Química	es
dc.affiliation.grupoinv	UC3M. Grupo de Investigación: Comportamiento en Servicio de Materiales	es
dc.affiliation.grupoinv	UC3M. Grupo de Investigación: Síntesis y Procesado de Materiales	es
dc.contributor.author	Fernández Álvarez, María
dc.contributor.author	Velasco López, Francisco Javier
dc.contributor.author	Torres Carrasco, Manuel
dc.contributor.author	Bautista Arija, María Asunción
dc.contributor.funder	European Commission	en
dc.date.accessioned	2021-06-07T09:40:42Z
dc.date.available	2023-09-15T23:00:04Z
dc.date.issued	2021-09-15
dc.description.abstract	The wear resistance of organic coatings has an important role in order to extend their in-service life. Epoxy powder coatings were mixed with nanosilica through ball milling to study their effect on the wear performance after ultraviolet (UV) exposure. Two types of SiO2 nanoparticles were added: hydrophilic (HL) and hydrophobic (HB) at different percentages (0.25–1% by wt.). Modified powders were applied by electrostatic spraying gun on carbon steel sheets. After curing, coatings were exposed to a xenon lamp for 500 h. The surface of coatings was analyzed by scanning electron microscope (SEM). Reciprocating sliding wear tests were performed at room temperature and dry conditions, under 5 N load and 10 Hz frequency. The countermaterial was a 6 mm-stainless steel ball. Wear tracks were analyzed by an optoelectronic microscope and SEM. In order to analyze possible chemical changes, attenuated total reflection Fourier transform infrared spectroscopy (ATR-FTIR) was performed. Finally, universal hardness was evaluated to study mechanical properties. Results reveal that small amounts of both types of nanosilica, make the epoxy-matrix coatings chemically degrade less than non-reinforced ones under irradiation, increasing their mechanical behavior and thus wear resistance. The 0.75-1HL and the 0.75HB coatings exhibit the best wear performance after UV exposure.	en
dc.description.sponsorship	The authors acknowledge Universidad Pontificia Comillas and Cubson International Consulting for their support with the ATR-FTIR tests and with the organic coating process respectively. Funding by Interreg SUDOE, through the KrEaTive Habitat project [grant number SOE1/P1/E0307], is also acknowledged.	en
dc.format.extent	10
dc.identifier.bibliographicCitation	Fernández-Álvarez, M., Velasco, F., Torres-Carrasco, M. & Bautista, A. (2021). Hindering the decrease in wear resistance of UV-exposed epoxy powder coatings by adding nano-SiO2 through ball milling. Wear, vol. 480-481, 203935.	en
dc.identifier.doi	https://doi.org/10.1016/j.wear.2021.203935
dc.identifier.issn	0043-1648
dc.identifier.publicationfirstpage	1
dc.identifier.publicationissue	203935
dc.identifier.publicationlastpage	10
dc.identifier.publicationtitle	Wear	en
dc.identifier.publicationvolume	480-481
dc.identifier.uri	https://hdl.handle.net/10016/32838
dc.identifier.uxxi	AR/0000027948
dc.language.iso	eng
dc.publisher	Elsevier	en
dc.relation.projectID	info:eu-repo/grantAgreement/EC/KrEaTive Habitat - SOE1/P1/E0307	es
dc.rights	© 2021 Elsevier B.V.
dc.rights	Atribución-NoComercial-SinDerivadas 3.0 España	*
dc.rights.accessRights	open access	en
dc.rights.uri	http://creativecommons.org/licenses/by-nc-nd/3.0/es/	*
dc.subject.eciencia	Materiales	es
dc.subject.other	Sliding wear	en
dc.subject.other	Hardness	en
dc.subject.other	Polymer-matrix composite	en
dc.subject.other	Surface analysis	en
dc.subject.other	Wear testing	en
dc.title	Hindering the decrease in wear resistance of UV-exposed epoxy powder coatings by adding nano-SiO2 through ball milling	en
dc.type	research article	*
dc.type.hasVersion	AM	*
dspace.entity.type	Publication