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Accelerated weathering of wood surfaces coated with multifunctional alkoxysilanes by sol-gel deposition / Mandla A. Tshabalala in JOURNAL OF COATINGS TECHNOLOGY (JCT), Vol. 75, N° 943 (08/2003)
[article]
Titre : Accelerated weathering of wood surfaces coated with multifunctional alkoxysilanes by sol-gel deposition Type de document : texte imprimé Auteurs : Mandla A. Tshabalala, Auteur ; John E. Gangstad, Auteur Année de publication : 2003 Article en page(s) : p. 37-43 Note générale : Bibliogr. Langues : Américain (ame) Tags : Propriété physique surface Décoloration Feuil Revêtement protecteur Rayonnement UV Absorption eau Procédé sol gel Siloxane polymère Vieillissement accéléré Bois Utilisation Index. décimale : 667.9 Revêtements et enduits Résumé : Accelerated weathering of wood surfaces coated with hexadecyltrimethoxysilane (HDTMOS) in the presence of methyltrimethoxysilane (MTMOS) by the sol-gel process was investigated. The sol-gel process allowed the deposition of a covalently bound thin layer of polysiloxane networks on the wood surface that was resistant to water sorption and water leaching. The rate of weight loss resulting from surface erosion and the extent of surface color loss caused by photo-induced discoloration were decreased for coated specimens compared to uncoated specimens. En ligne : http://www.fpl.fs.fed.us/documnts/pdf2003/tshab03b.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=5575
in JOURNAL OF COATINGS TECHNOLOGY (JCT) > Vol. 75, N° 943 (08/2003) . - p. 37-43[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 000568 - Périodique Bibliothèque principale Documentaires Disponible Colorant-induced exterior discoloration of latex paints / Lakshmi Sadasivan in JOURNAL OF COATINGS TECHNOLOGY (JCT), Vol. 73, N° 920 (09/2001)
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Titre : Colorant-induced exterior discoloration of latex paints Type de document : texte imprimé Auteurs : Lakshmi Sadasivan, Auteur ; Usha R. Gandhi, Auteur Année de publication : 2001 Article en page(s) : p. 81-86 Note générale : Bibliogr. Langues : Américain (ame) Tags : Matériau revêtement Peinture eau émulsion Feuil Exposition intempérie Dégradation chimique Décoloration Colorant Pigment minéral Titane Oxyde Etude expérimentale Index. décimale : 667.9 Revêtements et enduits Résumé : Exterior discoloration of latex paint films has been attributed to known causes such as tannin and stain bleeding, mildew and sap staining, color fading and chalking due to certain pigments, and yellowing due to mildewcides and alkyd modification. This paper refers to exterior discoloration of latex paint films containing specific colorant(s). A simple and quick method was adopted to screen paint formulations that may discolor upon exposure to sunlight and water. The exterior discoloration of latex paint films tinted with raw umber colorant is primarily dependent on the manganese oxide(s) present as impurity in the colorant. The role of titanium dioxide in discoloration of raw umber containing latex paint films is also demonstrated. Using this method, the grades of titanium dioxide could be differentiated that facilitate exterior discoloration. A clear correlation was established between the types of surface treatment on titanium dioxide pigment (alumina, zirconia, or silica) versus colorant-dependent discoloration. The investigation demonstrates that the colorant-dependent discoloration is independent of binders, pigment volume concentrations, and mildewcide used in a formulation. Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=5764
in JOURNAL OF COATINGS TECHNOLOGY (JCT) > Vol. 73, N° 920 (09/2001) . - p. 81-86[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 001228 - Périodique Bibliothèque principale Documentaires Disponible