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Towards a smaller footprint / Eva Tejada in EUROPEAN COATINGS JOURNAL (ECJ), N° 12 (12/2022)
[article]
Titre : Towards a smaller footprint : Contributing to the development of more sustainable solutions for wood coatings Type de document : texte imprimé Auteurs : Eva Tejada, Auteur ; Daniel Steinke, Auteur Année de publication : 2022 Article en page(s) : p. 32-37 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Biomatériaux
Bois -- Revêtements
Durée de vie (Ingénierie)
Gaz à effet de serre -- Réduction
Réticulants
Revêtement monocomposant
Revêtements bi-composant
Revêtements en phase aqueuse -- AdditifsIndex. décimale : 667.9 Revêtements et enduits Résumé : With the EU Green Deal targeting climate neutrality by 2050, the need to reduce the environmental impact of industrial processes like wood coatings is increasing. Using tools like the life cycle assessment (LCA), we demonstrate how water-borne polyurethane systems can help us to reduce the carbon footprint of wood coatings in comparison to two component solvent-borne polyurethanes. We highlight the latest developments, such as a hardener ("Bayhydur quix") which can additionally contribute to a significant reduction of the environ-mental footprint in a high-performance wood coating system by accelerating the drying process. We also present different available solutions for further reducing CO, emissions by using partially bio-based raw materials, both for solvent-borne and water-borne technologies. Note de contenu : - Carbon footprint comparison of solvent-borne vs water-borne coatings
- Systems description and calculation assumptions
- Results and discussions
- Bio-based raw materials
- Note : limitation of the study
- Table 1 : Wood coating systems used in this study based on formulations given by Hesse : 2K solvent-borne aliphatic polyurethane (2K SB PU), standard 2K water-borne polyurethane (2K WB PU) and fast-drying 2K water-borne polyurethane using "Bayhydur quix" as hardener (2K WB PU hardener)
- Table 2 : Characteristics of some examples of partially bio-based polymers available for wood coatings
- Table 3 : Performance of a 1K and 2K partially bio-based wood coatingPermalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=38529
in EUROPEAN COATINGS JOURNAL (ECJ) > N° 12 (12/2022) . - p. 32-37[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 23759 - Périodique Bibliothèque principale Documentaires Disponible 23767 - Périodique Bibliothèque principale Documentaires Disponible Two-component waterborne polyurethanes : The rheology of mixing / H. Bui in EUROPEAN COATINGS JOURNAL (ECJ), N° 5/97 (05/1997)
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Titre : Two-component waterborne polyurethanes : The rheology of mixing Type de document : texte imprimé Auteurs : H. Bui, Auteur ; M. Dvorchak, Auteur ; K. Hudson, Auteur ; J. Hunter, Auteur Année de publication : 1997 Article en page(s) : p. 476-481 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Bois -- Revêtements
Composés organiques volatils
Formulation (Génie chimique)
Mélanges (chimie)
Polyisocyanates
Polyols
Polyuréthanes
Revêtements bi-composant:Peinture bi-composant
Revêtements en phase aqueuse:Peinture en phase aqueuse
RhéologieIndex. décimale : 667.9 Revêtements et enduits Résumé : Two-component waterborne polyurethane systems for wood can be formulated with ultralow Volatile Organic Compounds (VOC) and Volatile Hazardous Air Pollutants (VHAPs). Due to the high surface tension of these systems, and the high viscosity of polyisocyanates relative to the polyol dispersion, problems still remain with mixing in industrial applications. The high viscosity causes gel formation in the in-line mixing apparatus, and the high surface tension and air entrapment cause microfoam in the final film. Therefore, the rheology of dynamic and static mixing of the system was studied in detail. The results show that the critical parameters for controlling the properties of the coatings are 1) viscosity of polyisocyanates and 2) particle size of the mixture of polyol and polyisocyanate under both low and high shear flow fields. With this knowledge, the spray equipment and formulation were modified for wood applications to give better spraying with no gel formation and reduced microfoam. Note de contenu : - Chemistry of two-component waterborne polyurethanes
- Problems with two-component waterborne polyurethane coatings
- Materials
- Experimental
- Formulation for wood coatings applications
- Morphology of polyisocyanate and polyol latex in water
- Batch mixing
- Dynamic Mixing
- Modification of spray equipment
- Comparisons of mixing methodsPermalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=11403
in EUROPEAN COATINGS JOURNAL (ECJ) > N° 5/97 (05/1997) . - p. 476-481[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 002527 - Périodique Bibliothèque principale Documentaires Disponible
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Titre : A unique combination Type de document : texte imprimé Année de publication : 2021 Article en page(s) : p. 22-23 Langues : Anglais (eng) Catégories : Bois -- Revêtements
Polyisocyanates
Polyols
Polyuréthanes
Produits commerciaux
Revêtements (produits chimiques)Index. décimale : 667.9 Revêtements et enduits Résumé : Applications for polyurethane coatings are more or less universal, the endless combinations of polyols and hardeners open many possibilities. In this overview we concentrate on the world of wood coatings. The table consists of an exemplary selection of isocyanates and polyols with different properties to cover the still large field of wood coatings. En ligne : https://drive.google.com/file/d/1B4Cd7JdIO4LqC7szEdnch41-hfUhfHLp/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=36046
in EUROPEAN COATINGS JOURNAL (ECJ) > N° 7-8 (07-08/2021) . - p. 22-23[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 22830 - Périodique Bibliothèque principale Documentaires Disponible Unique waterborne alternatives to traditional solvent-based coatings for industrial wood applications / Laurie Morris in COATINGS TECH, Vol. 15, N° 6 (06/2018)
[article]
Titre : Unique waterborne alternatives to traditional solvent-based coatings for industrial wood applications Type de document : texte imprimé Auteurs : Laurie Morris, Auteur ; Alberdingk Boley, Auteur Année de publication : 2018 Article en page(s) : p. 30-37 Langues : Américain (ame) Catégories : Bois -- Revêtements
Dispersions et suspensions
Essai de dureté
Essais (technologie)
Essais de résilience
Formulation (Génie chimique)
Polyacryliques
Polymères en émulsion
Polyuréthanes
Résistance chimique
Résistance thermique
Revêtements -- Propriétés mécaniquesIndex. décimale : 667.9 Revêtements et enduits Résumé : Water-based coatings made from WB UV resins, acrylic emulsions, and polyurethane dispersions all are good candidates for industrial wood coatings. They have very good chemical resistance and mechanical propertie. They can be formulated at low VOCs and have low toxicity. They are viable alternatives to solvent-based chemistries. Note de contenu : - EXPERIMENTAL : WATERBORNE UV COATINGS : Panel preparation (UV coatings - Other coatings) - Test methods (Chemical/stain resistance - Scrape adhesion - Ball point pen indentation - Plasticizer resistance - Green print resistance - Hot print resistance - Boiling water resistance - Hot and cold check resistance - Edge soak - Formulations) - Testing - results
- EXPERIMENTAL : ACRYLIC EMULSION : Formulations - Panel preparation (Birch plywood - glass) - Testing - Results
- EXPERIMENTAL : POLYURETHANE DISPERSION : Formulations - Panel preparation (3BH leneta cards - Birch plywood) - Testing - Results
- Fig. 1 : Chemical resistance (KCMA) 24-hour dwell (except mustard 1-hour dwell)
- Fig. 2 : Chemical resistance (other) 16-hour dwell
- Fig. 3 : Scrape adhesion and ball point pen indentation resistance
- Fig. 4 : Plasticizer, green print, and hot print resistance
- Fig. 5 : Boiling weter resistance
- Fig. 6 : Edge soak and hot cold check resistance
- Fig. 7 : Results from Koening pendulum hardness testing after 7 and 14 days
- Fig. 8 : Mustard
- Fig. 9 : Coffee, ethanol, and red wine
- Fig. 10 : Block resistance-room temperature, 1ib/sq in., overnight
- Fig. 11 : Block resistance - 50°C, 1000 g/sq in., 30 min.
- Fig. 12 : Boiling water resistance
- Fig. 13 : Scrape adhesion
- Fig. 14 : ABI emulsion vs competitive emulsion
- Fig. 15 : Chemical resistance-Leneta card
- Fig. 16 : Chemical resistance-birchpanel
- Fig. 17 : Boiling water resistance
- Fig. 18 : Scrape adhesion-5 kg
- Fig. 19 : Edge soak
- Fig. 20 : Taber abrasion-mg lost
- Fig. 21 : Koenig pendulum hardness
- Table 1 : Waterborne UV coatings formulations
- Table 2 : Waterborne UV coatings testing data
- Table 3 : Acrylic emulsion formulations
- Table 4 : Polyurethane dispersion formulationsEn ligne : https://drive.google.com/file/d/1pvbStFXZOZrDs2hfll7o9-pFugyYKIJE/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=31204
in COATINGS TECH > Vol. 15, N° 6 (06/2018) . - p. 30-37[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 20269 - Périodique Bibliothèque principale Documentaires Disponible Using "high performance two-component waterborne polyurethane" wood coatings / Michael J. Dvorchak in JOURNAL OF COATINGS TECHNOLOGY (JCT), Vol. 69, N° 866 (03/1997)
[article]
Titre : Using "high performance two-component waterborne polyurethane" wood coatings Type de document : texte imprimé Auteurs : Michael J. Dvorchak, Auteur Année de publication : 1997 Article en page(s) : p. 47-52 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Bois
Bois -- Revêtements
Formulation (Génie chimique)
Liants
Mélanges (chimie)
Polyuréthanes
Projection de matériaux
Revêtements bi-composant
Revêtements en phase aqueuse:Peinture en phase aqueuse
Taille des particulesIndex. décimale : 667.9 Revêtements et enduits Résumé : Recent developments in coatings technology have resulted in two-component waterborne polyurethane wood coating formulations which offer the benefits of traditional solvent-borne systems ; however, these 2K WB/PUR systems offer significant reductions over solvent-borne systems in VOCs and HAPs, meeting stringent environmental regulations. In addition, 2K WB/ PUR systems meet specifications for finishes for kitchen cabinets, office, laboratory, and household furniture. This paper looks at the differences between solvent-borne polyurethane systems (2K SOV/PUR) and 2K WB/PUR systems. Also discussed are physical properties, formulation parameters, application techniques, and industrial hygiene issues. Note de contenu : - Chemistry
- Chemistry in the solution
- Chemistry in the film
- Variability in system performance via formulating techniques
- mixing and particle size
- Batch mixing
- Two-component mixing
- Electrostatic application of two-component waterborne polyurethanes
- Industrial hygiene
- Loss of hexamethylene diisocyanate monomer in the paint solutionPermalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=18107
in JOURNAL OF COATINGS TECHNOLOGY (JCT) > Vol. 69, N° 866 (03/1997) . - p. 47-52[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 003535 - Périodique Bibliothèque principale Documentaires Disponible UV-waterborne polyurethane-acrylate nanocomposite coatings containing alumina and silica nanoparticles for wood : mechanical, optical, and thermal properties assessment / Caroline Sow in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 8, N° 2 (03/2011)
PermalinkWater-based energy curable polyurethane dispersion / Michel Tielemans in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 205, N° 4614 (11/2015)
PermalinkWaterborne acrylic dispersions for wood lacquers / Ulrich Désor in EUROPEAN COATINGS JOURNAL (ECJ), N° 12/96 (12/1996)
PermalinkWaterborne coatings and sustainability in industrial wood coatings / Beth Earnst in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 207, N° 4635 (10/2017)
PermalinkWaterborne wood coatings made easy / Maria Almató in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 206, N° 4619 (04/2016)
PermalinkPermalinkWood coatings / Jorge Prieto / Hannover [Germany] : Vincentz Network GmbH & Co. (2018)
PermalinkWood made beautiful / Paul Swan in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 203, N° 4583 (04/2013)
PermalinkWood substrate - The foundation / E. R. Miller in SURFACE COATINGS INTERNATIONAL. PART B : COATINGS TRANSACTIONS, Vol. 88, B3 (09/2005)
PermalinkWood surfaces protected with transparent multilayer UV-cured coatings reinforced with nanosilica and nanoclay. Part II : Application of a standardized test method to study the effect of relative humidity on scratch resistance / William Nguegang Nkeuwa in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 11, N° 6 (11/2014)
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