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Thermal-induced recovery of small deformations and degradation defects on epoxy coating surface / Shi Xiaodong in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 7, N° 1 (01/2010)
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Titre : Thermal-induced recovery of small deformations and degradation defects on epoxy coating surface Type de document : texte imprimé Auteurs : Shi Xiaodong, Auteur ; Stuart G. Croll, Auteur Année de publication : 2010 Article en page(s) : p. 73-84 Note générale : Bibliogr. Langues : Américain (ame) Tags : Recovery/relaxation Scratch Defects Roughness Weathering Glass transition Coatings Index. décimale : 667.9 Revêtements et enduits Résumé : Surface defects, which are dependent on the surface properties, determine the appearance, toughness, and other properties of coatings; thus, changes to the morphology of a damaged epoxy coating surface were investigated on annealing. Changes in mechanically produced indentations and scratches with annealing indicate a surface transition temperature about 10 degree lower than the measured bulk glass transition temperature (T g). Polymer molecules at a free surface, even in a crosslinked coating, may have higher mobility, and thus allow different relaxation activity from the bulk material. The eventual extent of deformation is a function of the annealing temperature and time. Results showed that the deformation profile diminished, driven by viscoelastic deformation and surface energy; the effect of structural relaxation will be further studied. When the surface features were generated by photodegradation, the roughness increased initially when temperature was increased, possibly due to phase coarsening, and then the roughness diminished during extended annealing. DOI : 10.1007/s11998-009-9176-2 En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-009-9176-2.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=8349
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 7, N° 1 (01/2010) . - p. 73-84[article]Réservation
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