Fluorinated additives for stain-resistant matt latex paints / J. Branquinho in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 6, N° 4 (12/2009)  

[article]  inJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 6, N° 4 (12/2009) . - p. 483-491 Titre : Fluorinated additives for stain-resistant matt latex paints Type de document : texte imprimé Auteurs : J. Branquinho, Auteur ; J. A. C. Alves, Auteur ; Susana Carvalho, Auteur ; Jorge Moniz, Auteur ; Fernanda Oliveira, Auteur ; M. H. Gil, Auteur Année de publication : 2009 Article en page(s) : p. 483-491 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Fluoropolymères Latex Polyacrylate de butyle Résistance aux taches Revêtements en phase aqueuse -- Additifs:Peinture en phase aqueuse -- Additifs Index. décimale : 667.9 Revêtements et enduits Résumé : Latex paints are often preferred over solvent-based paints due to their good gloss and color retention, ease of handling, and lower volatile organic contents. However, matt latex paints tend to show poor stain resistance since they develop highly porous and rough surfaces. In recent years, matt latex paints have been improved in their stain resistance with resulting better cleanability, by adding hydrocarbon acrylic polymers and fluorine-containing compounds. In this work, we prepared fluorinated acrylic emulsions of the copolymer of butyl acrylate (BA) and perfluorobutylethylene (PFBE), which were introduced in latex paint compositions. The properties of the modified paints were evaluated by performing stain resistance tests with several domestic products. It was observed that they had good stain release properties, thus conferring good properties to the final painting system. They contain the self-cleaning behavior typical of fluorinated coatings, which have been proven by the decrease of their surface energies. Since the cleaning procedures of a matt paint film can also impart some gloss increase, the wet and dry burnishes were also evaluated. The results have shown improvements in stain resistance and cleanability of the modified matt latex paints with the maintenance of their stability and the coatings gloss as required. DOI : 10.1007/s11998-009-9170-8 En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-009-9170-8.pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=7691 [article]

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Sensing paint thickness / Alphonso Leite in EUROPEAN COATINGS JOURNAL (ECJ), N° 7-8/2004 (07-08/2004)  

[article]  inEUROPEAN COATINGS JOURNAL (ECJ) > N° 7-8/2004 (07-08/2004) . - p. 44-48 Titre : Sensing paint thickness : Improving the accuracy of contrast radio assessment using a specially developed laser unit Type de document : texte imprimé Auteurs : Alphonso Leite, Auteur ; Ana Pereira, Auteur ; Fernanda Oliveira, Auteur ; Joaquim Mendes, Auteur ; Adélio Mendes, Auteur ; José Alves, Auteur ; José Nogueira, Auteur Année de publication : 2004 Article en page(s) : p. 44-48 Langues : Anglais (eng) Index. décimale : 667.9 Revêtements et enduits Résumé : Quality control - An automatic unit, based on a laser sensor, can accurately determine the thickness of wet paint films.This enables the contrast ratio (CR) to be determined with far better accuracy because it is possible to determine, with the proposed mathematical relationship, a CR corresponding to a certain thickness. This work could help the development of methods to measure the CR and the colour strength of tinting bases with improved accuracy and speed. This would greatly speed up the quality control normally performed before the approval of any batch of paint, without any loss in the reliability of the results. En ligne : https://drive.google.com/file/d/16K0iZCJYzPzCDFYP2LTZfXLz-RTQkFgw/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=9308 [article]

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