Adhesion promotion for UV coatings and inks onto difficult plastic substrates / Rebecca Banton in COATINGS WORLD, Vol. 23, N° 7 (07/2018)  

[article]  inCOATINGS WORLD > Vol. 23, N° 7 (07/2018) Titre : Adhesion promotion for UV coatings and inks onto difficult plastic substrates Type de document : texte imprimé Auteurs : Rebecca Banton, Auteur ; Brian Casey, Auteur ; Christian Maus, Auteur ; Matthew Carroll, Auteur Année de publication : 2018 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Copolymère époxy acrylate Encre Essais (technologie) Essais d'adhésion Formulation (Génie chimique) Liants Matières plastiques -- Revêtement Polyesters Promoteurs d'adhésion Revêtements -- Séchage sous rayonnement ultraviolet Revêtements organiques Viscosité Index. décimale : 667.9 Revêtements et enduits Résumé : Ensuring proper adhesion between energy-curable coatings and non-absorptive substrates has long been a significant challenge. Whether it’s high shrinkage seen with the coating itself or low surface energy of the substrate’s surface, multiple factors can negatively influence the adhesion properties of a finished formulation. Past solutions to overcome these various hurdles have included the use of pretreated substrates and the addition of solventborne adhesion promoters. However, escalating costs, increased processing times, and regulatory concerns have forced formulators to start searching for alternate solutions. This paper discusses the incorporation of specialty co-binder resins to improve adhesion onto difficult plastic substrates. Because these novel adhesion promoters are solvent-free, low viscosity, and widely compatible, formulators can tackle the industry’s problem without compromising the performance of their energy-curable coatings. Note de contenu : - Plastic substrates - Definition and mechanisms of adhesion - Parameters of adhesion - Co-binder technology - Experimental design - Polyester formulation results : Viscosity - Tape test - Epoxy acrylate formulation results : Viscosity - Tape test - Conclusion - Polyester formulation - Epoxy formulation - Fig. 1 : Amino-functional alkoxysilane - Fig. 2 : General reaction for the manufacture of specially modified polyester resins - Fig. 3 : General reaction for the manufacture of ketone aldehyde resins - Fig. 4 : Initial and stability viscosity for polyester formulations - Fig. 5 : Initial and stability viscosity for polyester formulations - Fig. 6 : Initial and stability viscosity for polyester formulations - Fig. 7 : Initial and stability tape test results on OPP for polyester formulations - Fig. 8 : Initial and stability tape test results on Cast PP for polyester formulations - Fig. 9 : Initial and stability tape test results on corrugated plastic for polyester formulations - Fig. 10 : Initial and stability tape test results on Metalized PET for polyester formulations - Fig. 11 : Initial and stability tape test results on Untreated OPP for polyester formulations - Fig. 12 : Initial and stability viscosity for epoxy acrylate formulations - Fig. 13 : Initial and stability viscosity for epoxy acrylate formulations - Fig. 14 : Initial and stability viscosity for epoxy acrylate formulations - Fig. 15 : Initial and stability tape test results on OPP for epoxy acrylate formulations - Fig. 16 : Initial and stability tape test results on Cast PP for epoxy acrylate formulations.formulations - Fig. 17 : Initial and stability tape test results on corrugated plastic for epoxy acrylate formulations.formulations - Fig. 18 : Initial and stability tape test results on Metalized PET for epoxy acrylate formulations - Fig. 19 : Initial and stability tape test results on Untreated OPP for epoxy acrylate formulations - Table 1 : Blank – Polyester formulation - Table 2 : Blank – Epoxy acrylate formulation En ligne : https://www.coatingsworld.com/issues/2018-07-01/view_features/adhesion-promotion [...] Format de la ressource électronique : Html Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=32518 [article]

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