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Film formation of 2K waterborne polyurethane systems / Philippe Olier in COATINGS TECH, Vol. 7, N° 7 (07/2010)
[article]
Titre : Film formation of 2K waterborne polyurethane systems Type de document : texte imprimé Auteurs : Philippe Olier ; Imke Ludwig ; Mathias Kind ; Wilhelm Schabel ; Joachim Krenn ; Steve Meeker Année de publication : 2010 Article en page(s) : p. 38-42 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Formation de film
Polyuréthanes
Revêtements
Revêtements bi-composant:Peinture bi-composant
Revêtements en phase aqueuse -- Séchage:Peinture en phase aqueuse -- Séchage
Revêtements en phase aqueuse:Peinture en phase aqueuse
Spectroscopie RamanIndex. décimale : 667.9 Revêtements et enduits Résumé : Two-pack (2K) waterborne polyurethanes are increasingly used in coatings technologies. Examples of such coatings can be encountered in many different fields including metal coatings (for railway carriage, car refinish ... ), wood coatings (e.g., parquet flooring, furniture) or soft-feel coatings for plastic in the automotive industry. The benefits brought by waterborne technology can explain this growth. It is fully compliant with the new volatile organic compounds (VOC) regulations and contributes to better health and safety conditions for both workers and end users. Of course, switching from solvent-based to waterborne technology implies technical challenges. Many improvements have been achieved during the past years to develop waterborne systems that can compete with solvent-based coatings. In the case of polyisocyanates, for instance, the ease of miwing in the formulation and the control of side reactions with water have been greatly improved by using hydrophilically modified polyisocyanates.
However, a deeper understanding of the film formation mechanisms and the impact of different key parameters is still essential in order to finetune the formulation and achieve optimal results. Many techniques have been used to investigate these aspects such as Fourier transform infrared spectroscopy (FTIR), differential scanning calorimetry (DSC), or even mechanical measurements. Confocal Raman spectroscopy has also been widely used but only a few reports mention its use for the investigation of aqueous systems.
Here we present the use of Inverse Micro Raman spectroscopy (IMRS in order to investigate the drying behavior and fim composition of 2K waterborne polyurethanes.Note de contenu : - INVESTIGATION OF 2K WATERBORNE POLYURETHANE SYSTEMS USING IMRS : PRINCIPLES
- QUANTITATIVE EVALUATION
- EXPERIMENTAL : Inverse Micro Raman Spectroscopy (IMRS) experimental setup - Materials
- RESULTS : Influence of the dry content of the polyol - Investigation of film drying and compositionPermalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=18462
in COATINGS TECH > Vol. 7, N° 7 (07/2010) . - p. 38-42[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 012368 - Périodique Bibliothèque principale Documentaires Disponible
[article]
Titre : Fine-tuning formulations : Effective resin modifiers that take polyurethane formulations tothe next level Type de document : texte imprimé Auteurs : Pär Jörgensen, Auteur Année de publication : 2019 Article en page(s) : p. 34-39 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Auto-réticulation
Durée de vie en pot
Dureté (matériaux)
Essais de résilience
Formulation (Génie chimique)
Poly-e-caprolactone
Résistance à l'abrasion
Résistance au chocs
Revêtements -- Propriétés mécaniques
Revêtements bi-composant
Revêtements organiques
Rhéologie
ViscositéIndex. décimale : 667.9 Revêtements et enduits Résumé : Polycaprolactones are aliphatic solvent-free liquid polyols suitable for various crosslinked coating systems. They offer advantages as effective resin modifiers to be used directly in two-component polyurethane formulations. Replacing a small amount of a hydroxyl-functional resin with a four-functional polycaprolactone significantly improves vital mechanical properties and sustainability. Note de contenu : - Low-viscosity = compatibility and flow gains
- Experimental
- Shorter pot life
- Increased crosslink density improves hardness and scratch resistance
- Low TG boosts impact resistance
- Abrasion resistance
- Big mechanical impact from small quantities
- Fig. 1 : Principle structure of a four-functional polycaprolactone initiated by pentaerythritol
- Fig. 2 : Pot life - influence of addition of polycaprolactone on application viscosity (Brookfield) after mixing
- Fig. 3 : König hardness measured on Q-Panels without primer
- Fig. 4 : Self-healing measured on primed panels. Initial gloss 95-97
- Fig. 5 : Direct impact and reverse impact at -10C° measured on Q-panels
- Fig. 6 : Abrasion test, using CS17 wheel, 1000 g load and 1000 cycles, on primed panels
- Table 1 : Properties of hydroxyl functional components in test formulations
- Table 2 : Summary of formulations
- Table 3 : Scratch resistance - pencil hardness. 173 g standard weight applied applied to stylus with pencil measured on unprimed panelsEn ligne : https://drive.google.com/file/d/13TKe473e35qOpOJQjdGNLsBYzxNK_k0_/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=32297
in EUROPEAN COATINGS JOURNAL (ECJ) > N° 4 (04/2019) . - p. 34-39[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 20844 - Périodique Bibliothèque principale Documentaires Disponible Fine-tuning the tactile perception of coatings / Lisa Skedung in EUROPEAN COATINGS JOURNAL (ECJ), N° 6 (06/2021)
[article]
Titre : Fine-tuning the tactile perception of coatings : The glass transition temperature of filler beads as a proxy descriptor for small changes in tactile properties Type de document : texte imprimé Auteurs : Lisa Skedung, Auteur ; Elizabeth S. Collier, Auteur ; Kathryn L. Harris, Auteur ; Viveca Wallqvist, Auteur ; Anne Kari Nyhus, Auteur ; Lene K. Bjorndal, Auteur Année de publication : 2021 Article en page(s) : p. 32-37 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Caractérisation
Microbilles
Polyuréthanes
Revêtements bi-composant
Revêtements organiques
Toucher
Transition vitreuseIndex. décimale : 667.9 Revêtements et enduits Résumé : Human tactile evaluations were cobined with tactile friction measurements to quantify the perceptual experience of touching coated panels. Monosized beads of nine different polymer compositions were added to a soft-touch waterborne two-component PUR coating. Introducing beads of different composition affected tactile perception. Note de contenu : - Influencing the tactile perception of coatings
- Sample selection and production
- Material characterisation
- Quantitative perceptual tasks
- Tactile friction varied across the coated panels
- The relationship between bead composition and tactile perception
- Systematic design of bead properties for future perception delivery
- Table 1 : Description of the coated panels used as stimuli in the experimentEn ligne : https://drive.google.com/file/d/17p5AbV4NVqEQiAAMvyKGfaz6cY1HtKcw/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=35908
in EUROPEAN COATINGS JOURNAL (ECJ) > N° 6 (06/2021) . - p. 32-37[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 22779 - Périodique Bibliothèque principale Documentaires Disponible Formaldehyde-free waterborne acrylic wood coatings / Min-Chi in EUROPEAN COATINGS JOURNAL (ECJ), N° 5/95 (05/1995)
[article]
Titre : Formaldehyde-free waterborne acrylic wood coatings Type de document : texte imprimé Auteurs : Min-Chi, Auteur ; von Trentini, Auteur Année de publication : 1995 Article en page(s) : p. 362-367 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Bois
Formulation (Génie chimique)
Polyacryliques
Polyuréthanes
Revêtements bi-composant
Revêtements en phase aqueuse:Peinture en phase aqueuseIndex. décimale : 667.9 Revêtements et enduits Résumé : Environmental regulations are demanding the wood finishing market to shift to coatings with increasingly lower amount of solvents, volatile organic compounds and hazardous air pollutants. Recent advancement in waterborne wood coatings has led to various waterborne technologies that exhibit the appearance as well as performance requirement of solvent-borne lacquers. Described here are four formaldehyde-free waterborne technologies that incorporate acrylic dispersion polymers specially designed for the high-end wood industry. Note de contenu : - One-pack self-crosslinking acrylic dispersion
- Aqueous UV curable multi-functional acrylate-free acrylic dispersion
- Two-pack polyurethane based on acrylic polyol and water dispersible polyisocyanate
- Two-pack ambient cure waterborne acrylic coating crosslinked with aromatic polycarbodiimidePermalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=11339
in EUROPEAN COATINGS JOURNAL (ECJ) > N° 5/95 (05/1995) . - p. 362-367[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 002504 - Périodique Bibliothèque principale Documentaires Disponible Formulation of 2K waterborne concrete floor coatings to meet new low VOC standards / Ming Tsang in PAINTINDIA, Vol. LX, N° 6 (06/2010)
[article]
Titre : Formulation of 2K waterborne concrete floor coatings to meet new low VOC standards Type de document : texte imprimé Auteurs : Ming Tsang, Auteur ; Karl Sundberg, Auteur Année de publication : 2010 Article en page(s) : p. 77-84 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Epoxydes
Formulation (Génie chimique)
Matériaux cimentaires -- Revêtements protecteurs
Revêtements bi-composant:Peinture bi-composant
Revêtements en phase aqueuse:Peinture en phase aqueuseIndex. décimale : 667.9 Revêtements et enduits Résumé : Organic solvents are commonly used in 2-pack waterborne epoxy coatings such as high performance floor finishes. Generally, these solvents provide various benefits, such as facilitating proper film formation, making it easier to mix parts A & B together, and are also thought to extend the pot-life. However, due to new lower VOC limits on floor coatings enacted in the south coast region of California, the reduction or removal of organic solvents is desired. By using specific raw materials and formulation techniques, it is possible to formulate garage concrete floor topcoats with VOC contents below 50g/L, while maintaining good performance properties and ease of field applications by do-it-yourselfers (DIY) Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=9837
in PAINTINDIA > Vol. LX, N° 6 (06/2010) . - p. 77-84[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 012409 - Périodique Bibliothèque principale Documentaires Disponible Functional blend for two-component coatings / Michael Ludewig in EUROPEAN COATINGS JOURNAL (ECJ), (01-02/2024)
PermalinkFunctional & specialty coatings for enhanced end use performance / Mukesh Kumar Madhup in PAINTINDIA, Vol. LXIX, N° 11 (11/2019)
PermalinkFurther development of low-viscosity polyester polyols for high-solids 2K polyurethane coatings in COATINGS WORLD, Vol. 24, N° 3 (03/2019)
PermalinkGeneral information on polyurethane chemistry and its application in coatings / Anand Khot in PAINTINDIA, Vol. LXI, N° 4 (04/2011)
PermalinkPermalinkGoing from strength to strength / Gerald A. Vandezande in EUROPEAN COATINGS JOURNAL (ECJ), N° 2 (02/2015)
PermalinkGreen technology for the construction industry - two component waterborne polyurethane coatings / Prashant Gangwar in PAINTINDIA, Vol. LXI, N° 8 (08/2011)
PermalinkPermalinkPermalinkPermalinkHigh performance polyurethane coating systems utilizing oxazolidine-based reactive diluents / G. N. Robinson in JOURNAL OF COATINGS TECHNOLOGY (JCT), Vol. 66, N° 839 (12/1994)
PermalinkHigh performance polyurethane coatings for wall / Kumar Iyer in PAINTINDIA, Vol. LXVII, N° 5 (05/2017)
PermalinkHigh performance protective coatigs - III / Mukund Hulyalkar in PAINTINDIA, Vol. LXIV, N° 8 (08/2014)
PermalinkHigh performance protective coatings - II / Mukund Hulyalkar in PAINTINDIA, Vol. LXIV, N° 7 (07/2014)
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