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Painting and finishing exterior wood / William C. Feist in JOURNAL OF COATINGS TECHNOLOGY (JCT), Vol. 68, N° 856 (05/1996)

[article]  inJOURNAL OF COATINGS TECHNOLOGY (JCT) > Vol. 68, N° 856 (05/1996) . - p. 23-26 Titre : Painting and finishing exterior wood Type de document : texte imprimé Auteurs : William C. Feist, Auteur Année de publication : 1996 Article en page(s) : p. 23-26 Langues : Américain (ame) Catégories : Bois -- Revêtements protecteurs Bois extérieurs Revêtements Revêtements -- Finition Revêtements en bâtiment Vernis Index. décimale : 667.9 Revêtements et enduits Résumé : Wood continues to play an important role as a structural material in today's high-tech society. As lumber and in reconstituted products, wood is commonly used for house siding, trim, decks, fences, and countless other exterior and interior applications. When wood is exposed to the elements, particularly sunlight and moisture, special precautions must be taken in structural design as well as in the selection and application of the finish. This report briefly describes the characteristics of wood finishes and their proper application to solid and reconstituted wood products. It describes how manufacturing and construction practices affect the surfaces of wood products, how various types of finishes interact with the surface, and how weathering affects the finished surfaces. Methods for selecting various exterior wood finishes are presented. Note de contenu : - Wood properties and finish durability - Finishing characteristics - Wood products used outdoors - Weathering of wood - Types of exterior wood finishes Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=18474 [article]

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003526	-	Périodique	Bibliothèque principale	Documentaires	Exclu du prêt

Field study on the effect of acidic conditions on the adhesion of paint to western redcedar / Mark T. Knaebe in JOURNAL OF COATINGS TECHNOLOGY (JCT), Vol. 68, N° 856 (05/1996)

[article]  inJOURNAL OF COATINGS TECHNOLOGY (JCT) > Vol. 68, N° 856 (05/1996) . - p. 27-30 Titre : Field study on the effect of acidic conditions on the adhesion of paint to western redcedar Type de document : texte imprimé Auteurs : Mark T. Knaebe, Auteur ; R. Sam Williams, Auteur ; John W. Spence, Auteur Année de publication : 1996 Article en page(s) : p. 27-30 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Adhésion Conifères Pluies acides Revêtements Revêtements -- Effets du climat Index. décimale : 667.9 Revêtements et enduits Résumé : Previous research results involving sulfur accumulation on cross sections of wood coated with latex paint led us to investigate whether acidic conditions could affect the bonding strength of paint and be a factor in catastrophic paint peeling. Through simulation of acidic dew under outdoor conditions, the study reported herein determined the effect of acid rain and/or dew on painted wood siding. Painted wood was soaked before dawn in various acid solutions for two hours each day, then exposed outdoors for the remainder of the day and night during the summer near Madison, WI. From October to May, the specimens were exposed but not soaked. After four years of exposure to weather and acid, only the painted wood interface for specimens soaked in sulfurous acid at pH 2 indicated deterioration as measured by fracture toughness testing. Note de contenu : - EXPERIMENTAL : Acid solution - Western redcedar panels - Specimens for machanical testing Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=18475 [article]

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Full-scale method for testing moisture conditions in painted wood paneling / S. Hjort in JOURNAL OF COATINGS TECHNOLOGY (JCT), Vol. 68, N° 856 (05/1996)

[article]  inJOURNAL OF COATINGS TECHNOLOGY (JCT) > Vol. 68, N° 856 (05/1996) . - p. 31-34 Titre : Full-scale method for testing moisture conditions in painted wood paneling Type de document : texte imprimé Auteurs : S. Hjort, Auteur Année de publication : 1996 Article en page(s) : p. 31-34 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Bois -- Revêtements protecteurs Essais (technologie) Peinture sur panneau Revêtements -- Effets du climat:Peinture -- Effets du climat Revêtements en bâtiment:Peinture en bâtiment Index. décimale : 667.9 Revêtements et enduits Résumé : Recognition of the critical problems of wood rot in exterior panel structures has led to the initiation of several research projects in the Nordic countries, in order to prevent damage of this kind. The moisture conditions in a panel are crucial to determining the risk of wood rot, unless the wood has been treated with a preservative. Presented here is a laboratory computer-based method for monitoring the moisture conditions in a test panel during a specific climate cycle. To measure the moisture content distribution, an electrical resistance method was used. The probes are connected to a computer, which monitors the moisture conditions. The method makes it possible to determine the capacity of a paint or a paint system to keep a panel in good condition. More than 40 paneled structures have been studied by this method. Panels from old structures, painted in a way found to be inadequate, were used as references. System painting has given the best results. It has also been shown that treatment of the end grain with the priming system is crucial. Note de contenu : - Reference calibration - The paint systems tested - Comparing results with the time-moisture-content value - The importance of treating the end grain - The moisture balance of waterborne paints - System painting offers the best moisture balance Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=18481 [article]

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Release of photoinitiator fragments from UV-cured furniture coatings / T. Salthammer in JOURNAL OF COATINGS TECHNOLOGY (JCT), Vol. 68, N° 856 (05/1996)

[article]  inJOURNAL OF COATINGS TECHNOLOGY (JCT) > Vol. 68, N° 856 (05/1996) . - p. 41-47 Titre : Release of photoinitiator fragments from UV-cured furniture coatings Type de document : texte imprimé Auteurs : T. Salthammer, Auteur Année de publication : 1996 Article en page(s) : p. 41-47 Note générale : Bibliogr. Langues : Américain (ame) Tags : 'Peinture  photodurcissable'  Vernis  Utilisation  Bois  Meuble  Durcissement  'Rayonnement  UV'  'Emission  polluant'  Amorceur  'Pollution  intérieur'  'Acrylate  polymère'  'Ester  polymère''Etude  expérimentale' Index. décimale : 667.9 Revêtements et enduits Résumé : Radiation cured furniture coatings for indoor use have often been criticized for strong odor. For a better understanding of the emission characteristics, the release of volatile organic compounds from some specially manufactured furniture was studied in 1 m3 climate chambers. Special attention was given to the detection of photoinitiator fragments, which can significantly contribute to the pollution of indoor air. It was shown that the fragmentation products contributed 20-60% to the total emission, which was typically found in a range of 100 μ/m3 to 250 μg/m3 within the testing period of about 600 hr. One main compound was the strongly odorous benzaldehyde that is generated by many applied photoinitiators via α-cleavage. It was also observed that the curing time has a strong effect on the emission potential. Note de contenu : - EXPERIMENTAL : Sample preparation - Chamber tests - Sampling and analysis - RESULTS : Comparison of different curing times : Acrylate coating - Test of furniture : Acrylate coating - Test of furniture : UPE coating Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=18482 [article]

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Viscosity reduction via monomer selection in solvent-borne high-solids styrene/acrylic coating resins / Charles A. Zezza in JOURNAL OF COATINGS TECHNOLOGY (JCT), Vol. 68, N° 856 (05/1996)

[article]  inJOURNAL OF COATINGS TECHNOLOGY (JCT) > Vol. 68, N° 856 (05/1996) . - p. 49-54 Titre : Viscosity reduction via monomer selection in solvent-borne high-solids styrene/acrylic coating resins Type de document : texte imprimé Auteurs : Charles A. Zezza, Auteur ; Kimberly D. Talmo, Auteur Année de publication : 1996 Article en page(s) : p. 49-54 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Copolymère styrène acrylique Haut extrait sec Liants Méthacrylate de méthyle Monomères Revêtement en phase solvant:Peinture en phase solvant Viscosité Index. décimale : 667.9 Revêtements et enduits Résumé : The ability to prepare solvent-borne, high-solids, coating resins has been hampered by the need to use resins which have lower than desired Tgs or use more solvent than would be preferred to reach application viscosity. Recent work has indicated that cyclic, higher Tg, methacrylate monomers that are incorporated into a styrene/acrylic copolymer may be effective in reducing solution viscosity. This work will discuss the effect of incorporating different cyclic methacrylate monomers on solution viscosities of several styrene/acrylic polymers. The high Tg cyclic monomers studied were : isobornyl methacrylate, cyclohexyl methacrylate, t-butylcyclohexyl methacrylate, and 3,5,5-trimethylcyclohexyl methacrylate. The monomers were incorporated into two polymers of different Tgs (30°C and 60°C) at between 60-65% solids level. Viscosities were measured and distinct differences in solution viscosities were noted. The polymers were characterized by various measurements. This paper will discuss these observations and the impact that this data provides. Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=18486 [article]

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003526	-	Périodique	Bibliothèque principale	Documentaires	Exclu du prêt