Accueil
Catégories
Ajouter le résultat dans votre panier Affiner la recherche
Etendre la recherche sur niveau(x) vers le bas
[article]
Titre : Framing the case for WVP : Water-vapour (WVP) - An important selection parameter for wood coatings ? Type de document : texte imprimé Auteurs : Niels Lutke Schipholt, Auteur ; Mathilde van't Oor, Auteur Année de publication : 2023 Article en page(s) : p. 22-26 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Bois -- Revêtements protecteurs
Perméabilité
Polyacryliques
Polyalkydes
Revêtements en bâtiment:Peinture en bâtiment
Revêtements en phase aqueuse:Peinture en phase aqueuseIndex. décimale : 667.9 Revêtements et enduits Résumé : For 30 years, our company has tested the performance of water-borne industrial paint systems for joinery applications. Performance requirements for coating systems specified for Dutch construction practice focus on water permeability and durability. Although these tests yield plenty of information, coating failures that occasionally occur in practice cannot always be explained. Note de contenu : - New sampling method and initial results
- Methodology
- Results
- Alkyd system : moisture accumulation
- Acrylic system : little changeEn ligne : https://drive.google.com/file/d/1rPbC8cGFof8AlEKEK0q-GGD8etP9nqxU/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=39460
in EUROPEAN COATINGS JOURNAL (ECJ) > (06/2023) . - p. 22-26[article]Réservation
Réserver ce document
Exemplaires (2)
Code-barres Cote Support Localisation Section Disponibilité 24072 - Périodique Bibliothèque principale Documentaires Disponible 24073 - Périodique Bibliothèque principale Documentaires Disponible FTIR studies of the effects of outdoor exposure on varnish-coated wood pretreated with CCB or water repellents / Mustafa Kemal Yalinkilic in JOURNAL OF COATINGS TECHNOLOGY (JCT), Vol. 71, N° 895 (08/1999)
[article]
Titre : FTIR studies of the effects of outdoor exposure on varnish-coated wood pretreated with CCB or water repellents Type de document : texte imprimé Auteurs : Mustafa Kemal Yalinkilic, Auteur ; Yuji Imamura, Auteur ; Munezoh Takahashi, Auteur ; Rifat Ilhan, Auteur ; Ahmet Cihangir Yalinkilic, Auteur ; Zafer Demirci, Auteur Année de publication : 1999 Article en page(s) : p. 103-112 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Bois -- Conservation
Bois -- Effets du climat
Bois -- Revêtements protecteurs
Bore
Chrome
Climat
Cuivre
Fourier, Spectroscopie infrarouge à transformée de
Hydrophobie
Matériaux -- Imprégnation
VernisIndex. décimale : 667.9 Revêtements et enduits Résumé : Scots pine (Pinus sylvestris L.) and chestnut (Castanea sativa Mill.) panels were coated with a polyurethane or an alkyd-based synthetic varnish. Some of the panels were impregnated with chromium-copper-boron (CCB) or the varnishes themselves before coating, as preservative-coating or water repellent (WR)-coating combination treatments, respectively. Earlier drastic changes in the intensity of the bands assigned to lignin and their shifts to some other stretching points were mostly attributed to chemical modification of lignin with the chromium in CCB, as well as the previously reported high color stability of CCB-impregnated wood. IR spectra of the nine months of weathering indicated that the synthetic varnish coating of non-impregnated or CCB-impregnated wood limited the reactions in lignin compared with polyurethane coating. Wood density and structural difference also seemed to play an important role since changes in lignin were mostly observed after six months of exposure for chestnut wood. Therefore, chemical reactions of CCB-wood cell wall components on the surface appeared likely to be affected from varnish type (their relative absorbency and distribution of sunlight), wood species (density and extractive substances), and exposure time and conditions. Note de contenu : - EXPERIMENTAL : Chemicals, impregnation process, and coating systems - Outdoor exposure - Infrared (IR) Spectral analysis
- RESULTS AND DISCUSSION : Weight gain - IR spectral analysisPermalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=17927
in JOURNAL OF COATINGS TECHNOLOGY (JCT) > Vol. 71, N° 895 (08/1999) . - p. 103-112[article]Réservation
Réserver ce document
Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité 003563 - Périodique Bibliothèque principale Documentaires Disponible 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]
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 bâtimentIndex. 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 balancePermalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=18481
in JOURNAL OF COATINGS TECHNOLOGY (JCT) > Vol. 68, N° 856 (05/1996) . - p. 31-34[article]Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité 003526 - Périodique Bibliothèque principale Documentaires Exclu du prêt Going green in Thailand - a life cycle of water-based wood coating systems in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 202, N° 4577 (10/2012)
[article]
Titre : Going green in Thailand - a life cycle of water-based wood coating systems Type de document : texte imprimé Année de publication : 2012 Article en page(s) : p. 12-14 Note générale : Encart "Goingreen" - Bibliogr. Langues : Anglais (eng) Catégories : Bois -- Revêtements protecteurs
Polymères en émulsion
Polyuréthanes
Revêtements en phase aqueuse:Peinture en phase aqueuseIndex. décimale : 667.9 Revêtements et enduits Résumé : A study of the life benefits of using waterborne polyrethane dispersions. Note de contenu : - LCA study for polyurethane coatings
- Boundary of the evaluation
- Life cycle impacts of WBPUC and SBPUCPermalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=16170
in POLYMERS PAINT COLOUR JOURNAL - PPCJ > Vol. 202, N° 4577 (10/2012) . - p. 12-14[article]Réservation
Réserver ce document
Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité 14225 - Périodique Bibliothèque principale Documentaires Disponible Green wood protection / Dirk Mestach in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 194, N° 4477 (06/2004)
[article]
Titre : Green wood protection Type de document : texte imprimé Auteurs : Dirk Mestach, Auteur ; Derrick Tweene, Auteur Année de publication : 2004 Article en page(s) : p. 18-21 Langues : Anglais (eng) Catégories : Analyse thermomécanique dynamique
Bois -- Revêtements protecteurs
Chromatographie sur gel
Formulation (Génie chimique)
Polyacryliques
Polyaddition
Résistance à l'humidité:Résistance à l'eau
Résistance chimique
Stabilisants (chimie)
Surfactants
Vernis en phase aqueuseIndex. décimale : 667.9 Revêtements et enduits Résumé : The authors explain which acrylic dispersions with polymer bound coatings are suitable for wood finishes.
Emulsion free-radical polymerisation has proven to be an environmentally friendly method for the production of a wide range of polymeric dispersions. In the emulsion polymerisation process, monomer is polymerised in an aqueous medium containing surfactant micelles. Surfactant plays a dual role in the process; it not only provides the locus of polymerisation but also stabilises the polymer particles.
Recent changes in the regulations concerning the emission of organic solvents in the European Community have led to a growing interest in the use of polymer dispersions in high performance waterborne coating systems.
One-pack systems, using the current state-of-the-art technology of combining carbonyl-hydrazide crosslinking with control of the morphology of the particles in the polymeric dispersion, have been studied extensively.
These acrylic dispersions are synthesised using conventional surfactants as an integral part of recipe. Even though some grafting might occur during the polymerisation, the surfactants are predominantly adsorbed onto the surface of the polymer particles.
The presence of surfactant has an influence on the final properties of the paint film. During film-formation coalescence is caused by self-diffusion and results in polymer inter-penetration. This process requires the disappearance of surfactant from the surface of the polymer particles.
Because most surfactants are not fully compatible with the polymer matrix, surfactant will have the tendency to migrate to the film-air interface. Therefore, the surface structure of a film cast from a dispersion will be different from its internal structure.
Because of the non-volatile nature of the surfactent, a permanent reduction of surface hardness is observed. In coatings this effect can lead to bad blocking resistance, inferior sanding properties and dirt pickup. In some cases the surfactant is completely exuded from the film.
As a result resin chemists have been actively pursuing alternatives for conventional low molecular weight surfactants.Note de contenu : - Surface active monomers
- Polymeric stabilisers
- Paint evaluation
- FIGURES : 1. Water whitening after soaking at 50°C for three hours. Left : dispersion with APEO surfactant, middle : dispersion with APEO-free surfactan, right : dispersion with anionic surfmer - 2. Carbonyl functional polymeric stabiliser - 2. Graft emulsion polymerisation process using a polymeric surfactant - 4. Clarity of clear-coat based on an acrylic dispersion made with a polymeric surfactant and a conventional surfactant - 5. Gel permeation chromatogram of the polymeric stabiliser (A) and the polymer dispersion (B). In B (1) is the second stage and (2) is the non-grafted polymeric stabiliser - DMTA of clear-coat based on polymer stabilised acrylic dispersion
- TABLES : 1. Typical properties of a polymer stabilised dispersion - 2. Formulation is made with polymers stabilised acrylic dispersion - 3. Hardness development - 4. Early water resistance - 5. Chemical resistance according to DIN NORM 68 861 1BPermalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=27728
in POLYMERS PAINT COLOUR JOURNAL - PPCJ > Vol. 194, N° 4477 (06/2004) . - p. 18-21[article]Réservation
Réserver ce document
Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité 000300 - Périodique Bibliothèque principale Documentaires Disponible PermalinkPermalinkHere comes sun protection for wood / B. Venkataraman in PAINTINDIA, Vol. LIX, N° 7 (07/2009)
PermalinkHigh molecular weight silicone emulsions as surface lubricating additives / Ogul Arseven in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 204, N° 4595 (04/2014)
PermalinkHigh-performance waterborne wood floor coatings / Mrunal Vaidya in PAINTINDIA, Vol. LXXI, N° 9 (09/2021)
PermalinkHow to optimize coating surfaces by using specialty modified siloxanes / Heike Semmler in SURFACE COATINGS INTERNATIONAL, Vol. 104.2 (03-04/2021)
PermalinkImprove on wood coatings / Klaus Schulte in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 195, N° 4486 (03/2005)
PermalinkImproved protection for outdoor furniture / Philippe Deligny in EUROPEAN COATINGS JOURNAL (ECJ), N° 6 (06/2013)
PermalinkImproving coating performance / Carlos Testa in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 201, N° 4564 (09/2011)
PermalinkImproving fungal decay resistance of solvent and waterborne polyurethane-coated wood by free and microencapsulated thyme essential oil / Seyed Mahmoud Miri Tari in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 19, N° 3 (05/2022)
PermalinkImproving the application and performance of UV-cured, field applied coatings / Jo Ann Arceneaux in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 204, N° 4601 (10/2014)
PermalinkImproving the performance of painted wood siding / Edward Burke in COATINGS TECH, Vol. 6, N° 4 (04/2009)
PermalinkImproving weather resistance, touch feel and scratch resistance / Mouhcine Kanouni in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 207, N° 4629 (03/2017)
PermalinkIn-situ phosphatizing coatings I : an air-dried lacquer system / Chaochua Wang in JOURNAL OF COATINGS TECHNOLOGY (JCT), Vol. 71, N° 892 (05/1999)
PermalinkPermalink