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Acrylic powder coatings / S. G. Yeates in SURFACE COATINGS INTERNATIONAL, Vol. 78, N° 10 (10/1995)
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Titre : Acrylic powder coatings Type de document : texte imprimé Auteurs : S. G. Yeates, Auteur ; T. Annable, Auteur ; B. J. Denton, Auteur ; G. Ellis, Auteur ; R. Nazir, Auteur ; D. W. Cornwell, Auteur Année de publication : 1995 Article en page(s) : p. 422-425 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Liants
Polyacryliques
Réticulation (polymérisation)
Revêtement poudre -- Additifs:Peinture poudre -- Additifs
Revêtements organiques
Revêtements poudre:Peinture poudre
Rhéologie
ViscositéIndex. décimale : 667.9 Revêtements et enduits Résumé : This paper describes the use of dynamic melt rhology in powder coatings designe, focusing on the ability of this technique to describe and predict coating performance in readily quantifiable rheology terms. Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=17000
in SURFACE COATINGS INTERNATIONAL > Vol. 78, N° 10 (10/1995) . - p. 422-425[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 006566 - Périodique Bibliothèque principale Documentaires Disponible Nano-mechanical properties and topography of thermosetting acrylic powder coatings / D. C. Andrei in JOURNAL OF COATINGS TECHNOLOGY (JCT), Vol. 73, N° 912 (01/2001)
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Titre : Nano-mechanical properties and topography of thermosetting acrylic powder coatings Type de document : texte imprimé Auteurs : D. C. Andrei, Auteur ; D. Parsonage, Auteur ; B. J. Briscoe, Auteur ; S. G. Yeates, Auteur ; J. N. Hay, Auteur ; Joseph L. Keddie, Auteur Année de publication : 2001 Article en page(s) : p. 65-73 Note générale : Bibliogr. Langues : Américain (ame) Tags : Matériau revêtement Peinture poudre Propriété mécanique Feuil Structure surface Thermodurcissable Acrylique dérivé polymère Résistance rayure Vernis Dureté Microdureté Module élasticité Topographie Etude expérimentale Index. décimale : 667.9 Revêtements et enduits Résumé : Both nano-scratching and nano-indentation techniques have been used to evaluated the mechanical properties of the surface of acrylic coatings, with and without added pigment. The coatings were formed from thermosetting, acrylic powders. Both types of coatings-clear and pigmented-do not exhibit any significant differences in their hardness with an increase in baking time from 7 to 15 min. According to the scratching profiles, the deformation induced at the surface is virtually elastic. Introducing the pigment causes a slight increase in the elastic modulus but not significant variation in hardness. In all coatings, the computed hardness and the elastic modulus vaues are higher near the surface (perhaps as a result of tip geometry effects), but these readily reach plateau values that are consistent with other work available in the literature. A long-range surface profiler, which provided two-dimensional and three-dimensional topographical maps of the coatings surfaces, reveals undulations in the surface with a wavelength on the order of 2-4 mm. Moreover, the topography of the pigmented coating is significantly smoother than that of the clear coating in which shallow pits (about 100 µm in diameter) are randomly distributed at the surface. The nano-mechanical properties within these pits are similar to the bulk of the coating. Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=5688
in JOURNAL OF COATINGS TECHNOLOGY (JCT) > Vol. 73, N° 912 (01/2001) . - p. 65-73[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 001220 - Périodique Bibliothèque principale Documentaires Disponible Recent developments in polymer design / S. G. Yeates in SURFACE COATINGS INTERNATIONAL, Vol. 79, N° 10 (10/1996)
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Titre : Recent developments in polymer design Type de document : texte imprimé Auteurs : S. G. Yeates, Auteur ; S. N. Richards, Auteur Année de publication : 1996 Article en page(s) : p. 437-440 Note générale : Bibliogr. Langues : Anglais (eng) Tags : Polymère 'Procédé revêtement' Polymérisation 'Masse moléculaire' 'Polymère vivant' 'Copolymère greffé' Morphologie Index. décimale : 667.9 Revêtements et enduits Résumé : Environmental legislation continues to be a major force for change within the surface coatings industry. This is motivated, both by concern for human health ( classifiction / labelling, occupational exposure limits, notifiation / testing and market restrictions / bans ), as well as the environment ( reduced emissions, VOC controls, waste minimisation ). There is, therefore, a move towards cleaner technologies which take a holistic view of the whole coatings process. Products are becoming ever more complex in order to provide comparable, or superior, in-use performance, coupled with enhanced environmental characteristics.
It is possible to identify aspects at all points in the coating life-cycle from raw materials suply, manufacture, use and disposal. This paper discusses some of these newer possibilities in terms of emerging polymerisation processes, and highlights possibilities for the design of environmentally-compliant coatings especially in the move to lower VOC content materials. In solvent-borne technology there is a move, both to higher solids, as well as towards the use of more benign solvents. In water-borne coatings we can see the need for greater control of macroscopic structure ( core-shell ) for improved film formation and balance of properties, as well as the trend towards co-solvent removal. In solvent-free materials ( ie thermoset powder ) there is the move to lower temperature stoving coupled with a desire to exploit further acrylic technology.Note de contenu : - CONTROLLED POLYMERISATION : Molecular weight control - Chain structure - Living polymerisation - Graft copolymers using CCTP - Dendrimers Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=17114
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Code-barres Cote Support Localisation Section Disponibilité 006576 - Périodique Bibliothèque principale Documentaires Disponible Rheology of acrylic powder coatings / S. G. Yeates in JOURNAL OF COATINGS TECHNOLOGY (JCT), Vol. 68, N° 861 (10/1996)
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Titre : Rheology of acrylic powder coatings Type de document : texte imprimé Auteurs : S. G. Yeates, Auteur ; T. Annable, Auteur ; B. J. Denton, Auteur ; G. Ellis, Auteur ; R. M. D. Nasir, Auteur ; D. Perito, Auteur ; I. Parker, Auteur Année de publication : 1996 Article en page(s) : p. 107-114 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Copolymères
Modèles mathématiques
Polyacryliques
Réticulation (polymérisation)
Revêtements poudre:Peinture poudre
Rhéologie
ThermodurcissablesIndex. décimale : 667.9 Revêtements et enduits Résumé : Flexibility in the functional design of acrylic powder coatings has enabled a wide range of different crosslinking chemistries to be developed, based upon carboxyl, hydroxyl, and glycidyl functional binders. The use of dynamic viscosity/time (temperature) cure curves is seen as a powerful technique to quantify formulation and resin design parameters. This paper describes how the technique can be used to highlight differences in the available crosslinking chemistries and begins to show how this can be used to predict coating performance on a more quantitative level. A simple model describing the viscosity changes during the curing process is presented, which shows good qualitative agreement with the experimental results. Note de contenu : - INTRODUCTION : Crosslinking chemistries - Chemorheology
- EXPERIMENTAL : Acrylic copolymers - Powder paint formulation - Rheology - Modeling
- RESULTS AND DISCUSSION : Acid functional acrylics - Comparison of different functional types - ModelingPermalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=18447
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Code-barres Cote Support Localisation Section Disponibilité 003519 - Périodique Bibliothèque principale Documentaires Disponible 003530 - Périodique Bibliothèque principale Documentaires Exclu du prêt