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Liquid water permeability of exterior wood coatings - Testing according to a proposed European standard method / J. Ekstedt in JOURNAL OF COATINGS TECHNOLOGY (JCT), Vol. 73, N° 914 (03/2001)
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Titre : Liquid water permeability of exterior wood coatings - Testing according to a proposed European standard method Type de document : texte imprimé Auteurs : J. Ekstedt, Auteur ; Gunilla Östberg, Auteur Année de publication : 2001 Article en page(s) : p. 53-59 Note générale : Bibliogr. Langues : Américain (ame) Tags : Bois Protection Extérieur Matériau revêtement Peinture Vernis Propriété physique Feuil Perméabilité eau Essai Norme CEN Absorption vieillissement accéléré Index. décimale : 667.9 Revêtements et enduits Résumé : The proposed European standard method for the assessment of liquid water permeability, prEN 927-5, gives significant differences in water absorption values for different types of paints on wood. The proposed limits in the performance standard for the water absorption values for coatings to be used in different types of construction seem to be at acceptable levels. There is a good correlation between the level of water absorption and outdoor experience of the performance of the paints. Aging can drastically influence the water protection properties of the coating. Some sort of aging of the samples is needed in the assessment of the water absorption properties of coatings. An artificial aging procedure is proposed in this paper. Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=5722
in JOURNAL OF COATINGS TECHNOLOGY (JCT) > Vol. 73, N° 914 (03/2001) . - p. 53-59[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 001222 - Périodique Bibliothèque principale Documentaires Disponible Mechanical stability of alkyd emulsions - Part 1 : influence of emulsion droplet size and the emulsifier / Gunilla Östberg in JOURNAL OF COATINGS TECHNOLOGY (JCT), Vol. 66, N° 832 (05/1994)
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Titre : Mechanical stability of alkyd emulsions - Part 1 : influence of emulsion droplet size and the emulsifier Type de document : texte imprimé Auteurs : Gunilla Östberg, Auteur ; Björn Bergenståhl, Auteur ; Margareta Huldén, Auteur Année de publication : 1994 Article en page(s) : p. 37-46 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Emulsifiants
Gouttelettes
Particules (matières)
Polyalkydes
Revêtements en phase aqueuse -- Additifs:Peinture en phase aqueuse -- Additifs
SurfactantsIndex. décimale : 667.9 Revêtements et enduits Résumé : The limited colloidal stability of alkyd emulsions compared to that of organic solvent-borne alkyd paints is a well-known problem. For environmental reasons, however, the alkyd emulsions have a great advantage since they are waterborne. In this study, the influence of emulsifier and initial droplet size on the mechanical stability of alkyd emulsions was investigated. Anionic emulsifiers have been shown previously to be more effective than nonionic emulsifiers in the formation of alkyd emulsions. This study showed that an anionic emulsifier also gave more stable emulsions at lower concentrations than did the nonionics. If the concentration was increased, emulsions stabilized with a nonionic emulsifier showed the same stability as the one with the anionic emulsifiers. However, too high a concentration of surfactants is undesirable in paints, since it increases the water sensitivity of the paint film. The mechanical stability of emulsions stabilized with anionic emulsions was less sensitive to the initial droplet size than emulsions stabilized with a nonionic emulsifier. Note de contenu : - EMULSION STABILITY : Methods for mechanical stability
- EXPERIMENTAL : Materials - Methods
- RESULTS AND DISCUSSIONS : Influence of initial droplet size - Influence of concentration of emulsifier - Different types of emulsifiersPermalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=18627
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Code-barres Cote Support Localisation Section Disponibilité 003466 - Périodique Bibliothèque principale Documentaires Disponible 003479 - Périodique Bibliothèque principale Documentaires Exclu du prêt