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Aqueous acrylic-polyurethane hybrid dispersions and their use in industrial coatings / Charles R. Hegedus in JOURNAL OF COATINGS TECHNOLOGY (JCT), Vol. 68, N° 860 (09/1996)
[article]
Titre : Aqueous acrylic-polyurethane hybrid dispersions and their use in industrial coatings Type de document : texte imprimé Auteurs : Charles R. Hegedus, Auteur ; Kristen A. Kloiber, Auteur Année de publication : 1996 Article en page(s) : p. 39-48 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Liants
Polyacryliques
Polymères en émulsion
Polyuréthanes
Réseaux polymères
Revêtements
Revêtements -- Propriétés mécaniques:Peinture -- Propriétés mécaniques
Revêtements -- Propriétés thermiques:Peinture -- Propriétés thermiques
Revêtements en phase aqueuse:Peinture en phase aqueuseIndex. décimale : 667.9 Revêtements et enduits Résumé : Acrylic and polyurethane aqueous dispersions have been used extensively in coating applications, both independently and as physical blends. The resulting coatings display a balance of properties from the inherent characteristics of acrylics and polyurethanes. Nonetheless, these properties often fall short of those predicted front the traditional rule of mixtures. In contrast, a process has been developed whereby acrylic monomers and urethane prepolymers are intimately mixed and mutually polymerized in an aqueous dispersion, thereby resulting in hybrid polymer dispersions. This process causes an interpenetrating network (IPN) of the polymers which subsequently display unique properties compared to standard acrylic, polyurethane, or macroscopically blended acrylic/urethane dispersions. These properties appear to be directly attributable to the acrylic-polyurethane hybrid morphology. Note de contenu : - EXPERIMENTAL : Materials - Procedures
- RESULTS AND DISCUSSION : Thermal properties - Surface topography - Clear coating properties - Pigmented coating propertiesPermalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=18440
in JOURNAL OF COATINGS TECHNOLOGY (JCT) > Vol. 68, N° 860 (09/1996) . - p. 39-48[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 003518 - Périodique Bibliothèque principale Documentaires Disponible 003529 - Périodique Bibliothèque principale Documentaires Exclu du prêt Aqueous bio-polymer dispersion for coating industry / Vivek L. Patil in PAINTINDIA, Vol. LXVI, N° 2 (02/2016)
[article]
Titre : Aqueous bio-polymer dispersion for coating industry Type de document : texte imprimé Auteurs : Vivek L. Patil, Auteur ; Pandit Devchandra, Auteur Année de publication : 2016 Article en page(s) : p. 67-75 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Biopolymères
Développement durable
Dispersions et suspensions
Ressources renouvelables
Revêtements en phase aqueuse:Peinture en phase aqueuseIndex. décimale : 667.9 Revêtements et enduits Résumé : Coating industry significantly contributes to the carbon footprint and VOC (Volatile organic compound) considering high volumes of coatings are still solvent borne. Recent technological trends of the coating industry are showing sustainability as the key approach to achieve reduced carbon footprint and low VOC. This is also driven by various eco-friendly & green initiatives across the globe. This article emphasises the use of water as replacement for organic solvents during the manufacture and application of coatings. Of late many water based technologies have emerged as against solvent based system in the coating industry. Here resin / paint need to be designed in such a way to achieve dilution with water during manufacture and application in order to minimize any hazard, odour and VOC during the entire chain of paint processing and its use. Since polymers are most vital ingredient responsible for the performance of a coating system, it becomes imperative to make them water thinnable in place of organic solvent while ensuring acceptable performance as expected from them. Therefore, in this article, different formulation techniques and principles have been reviewed for water based polymer synthesis. Polymers can be sustainable if synthesised from bio-derived raw materials. Various binders used in the coating industry and their respective bio based raw materials have also been covered in this review as use of bio derived polymers and water as carrier opens doors for sustainable growth in the coating industry. Note de contenu : - WHAT ARE BIO-POLYMERS ? : Bio-polymer verses synthetic polymers
- BIOPOLYMERS AND THEIR DERIVATIVES
- FEW INDUSTRIAL BACKBONE RESINS AND THEIR BIOLOGICAL GENERICS ARE : Epoxy resins derived from bio-based building blocks - A. Bio derived epichlorohydrin - B. Other bio derived building block - C. Bio-based epoxy curing agent - Bio derived acrylic monomers
- FACTS ABOUT POLYMER DISPERSIONS : Techniques for biopolymer dispersions - Volatile organic solvent-based techniques - A. Emulsification diffusion technique - B. Precipitation technique - C. Salting out technique - D. Emulsification-diffusion - Thermo-mechanical techniques - Correlation of appearance and particle size - Film formation of dispersion binder - Stabilization of dispersions - Primary dispersion - Emulsion of liquid polymers - Secondary dispersions - Secondary polymer dispersion commercially available - Epoxy dispersions - Alkyd/polyester dispersions - Acrylic dispersion - Polyurethane dispersionsEn ligne : https://drive.google.com/file/d/1N__c16u8gprf8jXSSNGqbczyLPCfAzK7/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=25667
in PAINTINDIA > Vol. LXVI, N° 2 (02/2016) . - p. 67-75[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 17901 - Périodique Bibliothèque principale Documentaires Disponible Aqueous dispersions for ultraviolet light curable coatings / Jeffrey Wang in JOURNAL OF COATINGS TECHNOLOGY (JCT), Vol. 68, N° 862 (11/1996)
[article]
Titre : Aqueous dispersions for ultraviolet light curable coatings Type de document : texte imprimé Auteurs : Jeffrey Wang, Auteur ; Jo Ann Arceneaux, Auteur ; Jodi Hall, Auteur Année de publication : 1996 Article en page(s) : p. 33-36 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Couches minces
Dispersions et suspensions
Liants
Polyacrylates
Réticulation (polymérisation)
Revêtements
Revêtements -- Propriétés mécaniques:Peinture -- Propriétés mécaniques
Revêtements en phase aqueuse -- Séchage sous rayonnement ultraviolet:Peinture en phase aqueuse -- Séchage sous rayonnement ultraviolet
Revêtements en phase aqueuse:Peinture en phase aqueuse
Rhéologie
ViscositéIndex. décimale : 667.9 Revêtements et enduits Résumé : Aqueous dispersions of ultraviolet light (UV) curable resins have been prepared and evaluated. The physical and rheological properties of these dispersions have been determined, and the performance of these dispersions in coating systems has been studied. Coatings based on these dispersions have faster UV cure speed, better surface hardness, and better flexibility compared with coatings based on undispersed resins. Note de contenu : - RESULTS AND DISCUSSION : Particle size - Rheological bahavior - Stability - Film performance Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=18452
in JOURNAL OF COATINGS TECHNOLOGY (JCT) > Vol. 68, N° 862 (11/1996) . - p. 33-36[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 003520 - Périodique Bibliothèque principale Documentaires Disponible 003531 - Périodique Bibliothèque principale Documentaires Exclu du prêt Assessment of various analytical techniques on naturally weathered paints as a predictor of long-term gloss retention for waterborne acrylic architectural paints / Matthew S. Gebhard in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 3, N° 1 (01/2006)
[article]
Titre : Assessment of various analytical techniques on naturally weathered paints as a predictor of long-term gloss retention for waterborne acrylic architectural paints Type de document : texte imprimé Auteurs : Matthew S. Gebhard, Auteur ; Michael B. Clark, Auteur ; Kenneth. F. Willey, Auteur ; Robert F. Antrim, Auteur ; Francis V. Acholla, Auteur ; John B. Newman, Auteur ; Kristin Weidemaier, Auteur Année de publication : 2006 Article en page(s) : p. 15-27 Note générale : bibliogr. Langues : Américain (ame) Catégories : Colloides
Durée de vie (Ingénierie)
Essais accélérés (technologie)
Formulation (Génie chimique)
Latex
Polyacryliques
Revêtements -- Analyse:Peinture -- Analyse
Revêtements décoratifs:Peinture décorative
Revêtements en bâtiment -- Détérioration:Peinture en bâtiment -- Détérioration
Revêtements en phase aqueuse:Peinture en phase aqueuse
Revêtements organiquesIndex. décimale : 667.6 Peintures Résumé : Gloss retention of waterborne acrylic architectural paints is one of many properties defining exterior durability. Assessing gloss retention is a time consuming process, and accelerated weathering protocols (Weather-Ometer®) typically have poor correlation with natural exposures for this class of paints. The recent development of new analytical techniques for assessing automotive paint durability raises the possibility of detecting subtle changes in short-term natural exposures that would be predictive of long-term gloss retention; however, extension to architectural paints has yet to be demonstrated. To test the concept, seven paints based on different aqueous emulsion polymers were exposed to natural weathering at the same time for 12 weeks at the Paint Quality Institute (PQI) test site, and were then examined using scanning probe microscopy, optical profilometry, chemiluminescence, XPS, and FTIR. These paints were also exposed for 1000 hr in a Weather-Ometer (WOM). Scanning probe microscopy, optical profilometry, chemiluminescence, FTIR, and the WOM results all showed poor correlation with 96-week natural exposure at the PQI test site. The lack of correlation for the WOM results emphasizes the crucial importance of using natural weathering to assess gloss retention. In contrast, the XPS shows some promise for qualitatively predicting subsequent gloss loss and appears worthy of further exploration. As employed here, the XPS was used to monitor the ratio of pigment (Al, Si, and Ti) to carbon coming from the TiO2 in the top few nanometers of the paint surface. A correlation (R2 = 0.731) was found between gloss retention after 96 weeks and the change (2 versus 12 weeks of exposure) in pigment to carbon ratio. This correlation is probably sufficient to rank a series of paints and allow for an assessment against well-established controls. While promising, XPS has some issues. Surface contamination, equipment expense, the considerable expertise required, and precision make utility for screening less than ideal. Note de contenu : - GLOSS RETENTION
- ALTERNATIVE APPROACH TO PREDICTING GLOSS RETENTION
- APPROPRIATE ANALYTICAL METHODS FOR ASSESSING COATING DEGRADATION : Scanning probe microscopy - Optical profilometry - Chemiluminescence - Photoacoustic spectroscopy - X-ray photoelectron spectroscopy
- ASSESSMENT PROTOCOL
- EXPERIMENTAL DETAILS : Paint formulations
- Gloss measurements - Scanning probe microscopy - Optical profilometry - Chemiluminescence - Photoacoustic spectra - X-ray photoelectron spectroscopy
- RESULTS AND DISCUSSION : Gloss - Weather-ometer - Surface topography - Chemiluminescence - PAS - XPS
- Table 1 : Paint formulatio used to prepara paints using the seven emulsion polymers
- Table 2 : Initial 60° gloss values for the paints based on the seven latex emulsion polymers
- Table 3 : PAS-FTIR parametersPermalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=3709
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 3, N° 1 (01/2006) . - p. 15-27[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 003762 - Périodique Bibliothèque principale Documentaires Disponible Automated dynamic testing for drying, hardness, and adhesion of paints, coatings, and adhesives / Ronald T. Obie in COATINGS TECH, Vol. 19, N° 2 (02/2022)
[article]
Titre : Automated dynamic testing for drying, hardness, and adhesion of paints, coatings, and adhesives Type de document : texte imprimé Auteurs : Ronald T. Obie, Auteur ; Cameron R. Anderson, Auteur Année de publication : 2022 Article en page(s) : p. 40-59 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Adhésifs -- Séchage
Adhésion
Essai de dureté
Essais dynamiques
Revêtement -- Séchage
Revêtement -- Séchage:Peinture -- Séchage
Revêtement en phase solvant
Revêtements en phase aqueuse
Temps de séchageIndex. décimale : 667.9 Revêtements et enduits Résumé : Characterization of dry and cure is very important in the development of paints, coatings, and adhesives. It can be challenging to assess dry and cure of these products on a quantitative, non-biased basis.
Although there are many different techniques utilized to assess drying, curing, and performance, some are often qualitative at best. It would be
useful to have quantitative techniques available to access these properties. In this paper, we introduce a novel automated dynamic dry time recorder (ADDTR) device that measures dry and cure of coatings similar to mechanical dry time recorders that meet ASTM Method D 5895.
The novel device is capable of recording and graphically displaying the coating drying profile as it dries so that drying time events may be easily identified, archived, and analyzed, even for clear coatings. Such analysis allows easy and quantitative comparison between different coating systems, chemistries, driers, etc. In certain configurations, the tester may also be utilized as a hardness, toughness, and adhesion tester.Note de contenu : - Drying time determination - Solvent-based coatings
- Drying time determinationa - Water-based coatings
- Hardness testing of filmsEn ligne : https://drive.google.com/file/d/1jS37p5GhUTprXBX57mpbyIctul1kid2w/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=37244
in COATINGS TECH > Vol. 19, N° 2 (02/2022) . - p. 40-59[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 23310 - Périodique Bibliothèque principale Documentaires Disponible Basic concepts of dry & wet opacity & refractive index and various RMs, water softeners / Mukund Hulyalkar in PAINTINDIA, Vol. LXXII, N° 10 (10/2022)
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PermalinkPermalinkPermalinkBeyond green : a toolbox for uncompromised industrial flooring / Rob Rasing in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 203, N° 4584 (05/2013)
PermalinkPermalinkBinding together - whatever the weather / Maurille Secher in EUROPEAN COATINGS JOURNAL (ECJ), N° 3 (03/2020)
PermalinkBiocoatings : challenges to expanding the functionality of waterborne latex coatings by incorporating concentrated living microorganisms / Michael C. Flickinger in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 14, N° 4 (07/2017)
PermalinkBlasting, straightening and priming steel sheets and profiles for cruise liners in INTERNATIONAL SURFACE TECHNOLOGY (IST), Vol. 8, N° 3 (2015)
PermalinkPermalinkBoltorn W3000 / Göran Ziegler in PAINTINDIA, Vol. LVII, N° 3 (03/2007)
PermalinkBoosting performance of preferred technology / Erin Vogel in EUROPEAN COATINGS JOURNAL (ECJ), N° 6 (06/2016)
PermalinkBoosting protective properties of latex binders / Jo Grade in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 201, N° 4560 (05/2011)
PermalinkBreaking technology barriers / Randy Funston in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 202, N° 4568 (01/2012)
PermalinkBreaking with convention / Joanne Mitchell in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 198, N° 4522 (03/2008)
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