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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]  inJOURNAL OF COATINGS TECHNOLOGY (JCT) > Vol. 75, N° 943 (08/2003) . - p. 37-43 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 : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=5575 [article]

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Specular gloss scales comparison between the national institute of standards and technology and the national research council of Canada / Maria E. Nadal in JOURNAL OF COATINGS TECHNOLOGY (JCT), Vol. 75, N° 943 (08/2003)

[article]  inJOURNAL OF COATINGS TECHNOLOGY (JCT) > Vol. 75, N° 943 (08/2003) . - p. 45-51 Titre : Specular gloss scales comparison between the national institute of standards and technology and the national research council of Canada Type de document : texte imprimé Auteurs : Maria E. Nadal, Auteur ; Mario Nöel, Auteur ; Joanne C. Zwinkels, Auteur Année de publication : 2003 Article en page(s) : p. 45-51 Note générale : Bibliogr. Langues : Américain (ame) Tags : Amérique  Nord  Propriété  optique  Mesure  comparative  Etalonnage  Canada  Organisation  nationale  Organisme  normalisation  Equation  état  Brillant Index. décimale : 667.9 Revêtements et enduits Résumé : The gloss value of a test sample is determined relative to a standard, generally a polished piece of black glass. Therefore, gloss is a dimensionless quantity whose accurate determination requires standardized experimental conditions such as spectral distribution of the incident beam of light, incident and viewing angles, and a gloss standard. To help manufacturers monitor and assess specular gloss, the National Institute of Standards and Technology (NIST) Physics Laboratory provides a special test service to calibrate gloss reference standards. This facility is built around a newly rebuilt reference goniophotometer—an instrument that measures flux as a function of angles of illumination or observation—and a newly developed primary gloss standard—three wedges of highly polished, high-quality optical glass. The system has an overall (k = 2) uncertainty of 0.4%. The new service offers calibration measurements of industry working gloss standards at the specular geometries of 20°, 60°, and 85°, in compliance with the International Standards Organization (ISO) 2813 and the American Society for Testing and Materials (ASTM) D 523 documentary standards. This article describes a bilateral comparison of specular gloss scales between NIST and the National Research Council of Canada (NRCC) that has been performed. The results of this comparison show agreement within the combined uncertainties for the measurement of specular gloss of highly polished black glass. Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=5576 [article]

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Analytical method for the release of isothiazolones from microtubules in artificial seawater / Ronald R. Price in JOURNAL OF COATINGS TECHNOLOGY (JCT), Vol. 75, N° 943 (08/2003)

[article]  inJOURNAL OF COATINGS TECHNOLOGY (JCT) > Vol. 75, N° 943 (08/2003) . - p. 53-59 Titre : Analytical method for the release of isothiazolones from microtubules in artificial seawater Type de document : texte imprimé Auteurs : Ronald R. Price, Auteur ; Joel Schnur, Auteur Année de publication : 2003 Article en page(s) : p. 53-59 Note générale : Bibliogr. Langues : Américain (ame) Tags : Isothiazolone  Cuivre  Microtubule  Hétérocycle  azote  Thiazole  dérivé  Chromatographie  HPLC  Eau  mer  Polymère  vecteur  Forme  libération  contrôlée  Vinylidène  polymère  Adjuvant  Biocide  Peinture  antisalissure  marine  Revêtement Index. décimale : 667.9 Revêtements et enduits Résumé : With restrictions on the use of metallic biocides in aquatic antifouling coatings, it is important to develop new methods to both contain and deliver these alternative compounds from marine coatings systems. Utilization of microencapsulation is one approach to the delivery of biocides that has not been utilized in the mainstream of antifouling paint formulations. When formulating next generation paints that utilize hydrophobic nonmetallic biocides, it is necessary to develop an understanding of the release kinetics of the compounds from model polymeric coatings in order to better develop methods for providing long term efficacy. The biocide 4,5-dichloro-2-n-octyl-4-isothiazolin-3-one is a nonmetallic and nonenvironmentally persistent biocide that has been registered in several countries for use as an antifouling agent and has gained approval by the U.S. Environmental Protection Agency. The release characteristics of this biocide from copper microtubules as well as polymeric films were determined by high performance liquid chromatography. Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=5577 [article]

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