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An integrated approach towards the study of scratch damage of polymers / G. T. Lim in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 2, N° 5 (01/2005)
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Titre : An integrated approach towards the study of scratch damage of polymers Type de document : texte imprimé Auteurs : G. T. Lim, Auteur ; H. J. Sue, Auteur ; J. N. Reddy, Auteur ; M. H. Wong, Auteur Année de publication : 2005 Article en page(s) : p. 361-369 Note générale : Bibliogr. Langues : Américain (ame) Tags : Propriété mécanique Etude expérimentale Méthode élément fini Modélisation Analyse surface Essai dureté par rayage mesure Endommagement Dureté Résistance rayure Thermoplastique Propène polymère Carbonate Index. décimale : 667.9 Revêtements et enduits Résumé : To seek a better understanding of the scratch damage of polymers, an integrated analysis approach is proposed in this article. This integrated approach essentially involves (a) the use of a new scratch test device for testing, (b) employing microscopy techniques and image an analysis tool, VIEEW®, for studying material damage and scratch visibility, and finally (c) performing finite element (FE) modeling to examine the mechanical response of the polymeric substrate involved during the scratch process. Applying this approach to five model material systems and employing linearly increasing load tests, the findings of the fundamental material science study of the scratch damage of these materials are presented. From the three-dimensional FE analysis, the numerical results generated were able to reasonably predict the scratch damage and provide corresponding mechanistic interpretation. The essential link between material science and mechanics outlines the uniqueness of this approach for studying the scratch damage of polymers. DOI : 10.1007/s11998-005-0004-z En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-005-0004-z.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=3726
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 2, N° 5 (01/2005) . - p. 361-369[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 000589 - Périodique Bibliothèque principale Documentaires Disponible Scratch resistance behavior of automotive plastic coatings / Rose Ann Ryntz in JOURNAL OF COATINGS TECHNOLOGY (JCT), Vol. 74, N° 925 (02/2002)
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Titre : Scratch resistance behavior of automotive plastic coatings Type de document : texte imprimé Auteurs : Rose Ann Ryntz, Auteur ; Dottie Britz, Auteur Année de publication : 2002 Article en page(s) : p. 77-81 Note générale : Bibliogr. Langues : Américain (ame) Tags : Microdureté Dureté Etude expérimentale Essai rayage Résistance rayure Feuil Propriété mécanique Matière plastique Peinture Matériau revêtement Industrie automobile Index. décimale : 667.9 Revêtements et enduits Résumé : The sensitivity of automotive coatings particularly coatings for plastics, to scratching, has been a growing concern among automakers. Scratching may result from such predelivery events as polishing of minor defects embedded in the paint, or post-delivery events such as car wash ristles, dirt embedded under a cloth utilized in polishing the car, tree branches, and the like. Warranty cannot separate out which event is the more prevalent (e.g., predelivery or post-delivery to the customer) form of damage on plastics. Data available on coatings for metal, however, does suggest thot isocyanate-based crosslinked systems perform more poorly than their melamine-based crosslinked counterparts when exposed to in-plant (predelivery) handling. This work attempts to correlate the scratch resistance behavior of hydroxyl-functional acrylic or polyester-isocyanate-functionalized carbamate-melamine-, functionalized silane-melamine-, and hydroxyl-functional acrylic or polyester-melamine-crosslinked systems, both in their green state (right out of the oven, less than one week post-cure time) and in their infancy in the field (simulated 250 kJ Xenon arc Weather-ometer), to surface attributes such as toughness, hardness, and elasticity. Known scratch methodologies, namely the crockmeter and Ford five-finger laboratory test methods, in addition to a newly described compressive shear loading device (herein termed Scratcho), are used to compare the clearcoat systems as applied over one-component hydroxyl functional acrylic or polyester melamine crosslinked black basecoats. It is shown that the scratch testing methodology utilized to assess the scratch resistance of the coating system dictates results, and that Scratcho compares very well with crockmeter results. Functional carbamate-melamine crosslinked one-component coatings and functionalized silane-melamine crosslinked one-component coatings appear to outperform selected two-component coatings, which in turn outperform one-component hydroxyl functional acrylic or polyester melamine crosslinked coatings. Material attributes such as surface hardness, toughness (as measured through the method of essential work), and the ability to recover from an applied load are most important in the ability of the coating to resist damage. Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=5676
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Code-barres Cote Support Localisation Section Disponibilité 001234 - Périodique Bibliothèque principale Documentaires Disponible 001235 - Périodique Bibliothèque principale Documentaires Disponible