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JOURNAL OF COATINGS TECHNOLOGY (JCT) . Vol. 73, N° 912Mention de date : 01/2001Paru le : 18/02/2001 |
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Ajouter le résultat dans votre panierHydrophobic coatings from emulsion polymers / D. R. Bassett in JOURNAL OF COATINGS TECHNOLOGY (JCT), Vol. 73, N° 912 (01/2001)
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Titre : Hydrophobic coatings from emulsion polymers Type de document : texte imprimé Auteurs : D. R. Bassett, Auteur Année de publication : 2001 Article en page(s) : p. 43-55 Note générale : Bibliogr. Langues : Américain (ame) Tags : Matériau revêtement Peinture eau émulsion Résistance Hydrophobicité Formulation Liant Polymérisation Vinylique ester polymère Polymère ramifié acétate copolymère Latex Teneur oxygène Propriété physique mécanique Feuil frottement Absorption Acrylate Paramètre solubilité Utilisation anticorrosion Bâtiment Article synthèse Index. décimale : 667.9 Revêtements et enduits Résumé : One of the chief requirements of protective coatings is the abilitity to confer water resistance to painted substrates. To accomplish this task, the coating itself must be water resistant but should also possess the additional performance properties expected of modern coatings. Branched vinyl esters provide the building blocks for preparing very hydrophobic binders by emulsion polymerization. Not only do these monomers have favorable reactivity with vinyl acetate but they also react affectivity with acrylates and can be formulated into a wide range of performance coatings. Hydrophobic polymers find use in a wide range of applications including architectural paints, building products and corrosion resistant coatings. In addition to the design of reliable measurements of water resistance, it would be beneficial to be able to predict the water sensitivity of materials based on composition. Calculations of oxygen contents and solubility parameters of polymers are proposed as useful approaches to estimating the hydrophilicity of coatings in order to define the hydrophilic limit imposed on coating by various water resistance tests. Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=5686
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Code-barres Cote Support Localisation Section Disponibilité 001220 - Périodique Bibliothèque principale Documentaires Disponible Novel coatings based on mixtures of blown soybean oil and acrylate prepolymers / Pehong Ni in JOURNAL OF COATINGS TECHNOLOGY (JCT), Vol. 73, N° 912 (01/2001)
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Titre : Novel coatings based on mixtures of blown soybean oil and acrylate prepolymers Type de document : texte imprimé Auteurs : Pehong Ni, Auteur ; Frank N. Jones, Auteur ; Shoukuan Fu, Auteur Année de publication : 2001 Article en page(s) : p. 57-64 Note générale : Bibliogr. Langues : Américain (ame) Tags : Matériau revêtement Peinture Liant Corps gras végétal Huile soja Soufflage Acrylate polymère Prépolymère Mélange Propriété physique mécanique Feuil Etude expérimentale Index. décimale : 667.9 Revêtements et enduits Résumé : Commercial blow soybean oil (BSBO) was shown by titration to contain a substantial level of (hydro)peroxy groups, presumably formed during the blowing process. Thus, BSBO can initiate free-radical polymerization. To explore the potential for film formation, BSBO was blended with (meth)acrylate monomers and/or prepolymers in different proportions. The monomers were trimethylopropane triacrylate esters (TMPTAE), 1,6-hexanediol dimethacrylate (HDDMA), and isobornyl acrylate (IBOA); the prepolymers were ethoxylated bisphenol A dimethacrylate (EBDMAE), and a hydrophobic aromatic urethane acrylate (HAUA).All blends required a catalyst (cobalt naphthenate) and temperatures of about 100°C to induce crosslinking and film formation. Blends with monomers gave formulations that could be applied with no added solvent, but film properties (pencil hardness, MEK double rub resistance, adhesion, and impact resistance) were not very good. Better film properties were obtained by blending prepolymers with BSBO and TMPTAE; these formulations required solvent for application, but VOC levels as low at 140 g/L were possible. FTIR spectra showed that free radical polymerization of the monomers and prepolymers occurred during film formation. Gel content studies indicated that part of the BSBO is incorporated into the crosslinked film, but a substantial fraction is not chemically bound to the network. Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=5687
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Code-barres Cote Support Localisation Section Disponibilité 001220 - Périodique Bibliothèque principale Documentaires Disponible Nano-mechanical properties and topography of thermosetting acrylic powder coatings / D. C. Andrei in JOURNAL OF COATINGS TECHNOLOGY (JCT), Vol. 73, N° 912 (01/2001)
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Titre : Nano-mechanical properties and topography of thermosetting acrylic powder coatings Type de document : texte imprimé Auteurs : D. C. Andrei, Auteur ; D. Parsonage, Auteur ; B. J. Briscoe, Auteur ; S. G. Yeates, Auteur ; J. N. Hay, Auteur ; Joseph L. Keddie, Auteur Année de publication : 2001 Article en page(s) : p. 65-73 Note générale : Bibliogr. Langues : Américain (ame) Tags : Matériau revêtement Peinture poudre Propriété mécanique Feuil Structure surface Thermodurcissable Acrylique dérivé polymère Résistance rayure Vernis Dureté Microdureté Module élasticité Topographie Etude expérimentale Index. décimale : 667.9 Revêtements et enduits Résumé : Both nano-scratching and nano-indentation techniques have been used to evaluated the mechanical properties of the surface of acrylic coatings, with and without added pigment. The coatings were formed from thermosetting, acrylic powders. Both types of coatings-clear and pigmented-do not exhibit any significant differences in their hardness with an increase in baking time from 7 to 15 min. According to the scratching profiles, the deformation induced at the surface is virtually elastic. Introducing the pigment causes a slight increase in the elastic modulus but not significant variation in hardness. In all coatings, the computed hardness and the elastic modulus vaues are higher near the surface (perhaps as a result of tip geometry effects), but these readily reach plateau values that are consistent with other work available in the literature. A long-range surface profiler, which provided two-dimensional and three-dimensional topographical maps of the coatings surfaces, reveals undulations in the surface with a wavelength on the order of 2-4 mm. Moreover, the topography of the pigmented coating is significantly smoother than that of the clear coating in which shallow pits (about 100 µm in diameter) are randomly distributed at the surface. The nano-mechanical properties within these pits are similar to the bulk of the coating. Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=5688
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Code-barres Cote Support Localisation Section Disponibilité 001220 - Périodique Bibliothèque principale Documentaires Disponible Fundamentals of polymer chemistry : I / Frederick H. Walker in JOURNAL OF COATINGS TECHNOLOGY (JCT), Vol. 73, N° 912 (01/2001)
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Titre : Fundamentals of polymer chemistry : I : Definitions and fundamental concepts Type de document : texte imprimé Auteurs : Frederick H. Walker, Auteur Année de publication : 2001 Article en page(s) : p. 75-79 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Polymères Index. décimale : 668.9 Polymères Résumé : This three-part series provides a basic introduction of the fundamentals of modern polymer chemistry. Beginning with the definitions and fundamental concepts discussed in Part I, the series is designed to broaden the understanding of polymer chemistry as utilized by the coatings industry. Part II focuses on a key factor in determining the properties of any polymer -molecular weight. In Part III, phase transitions in polymers, including melting point and glass transition temperature, are discussed. Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=5689
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Code-barres Cote Support Localisation Section Disponibilité 001220 - Périodique Bibliothèque principale Documentaires Disponible
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Code-barres | Cote | Support | Localisation | Section | Disponibilité |
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001220 | - | Périodique | Bibliothèque principale | Documentaires | Disponible |