Application of microcalorimetry to the study of interactions in coating formulations / Charles Kan in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 8, N° 1 (01/2011)  

[article]  inJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 8, N° 1 (01/2011) . - p. 1-10 Titre : Application of microcalorimetry to the study of interactions in coating formulations Type de document : texte imprimé Auteurs : Charles Kan, Auteur ; Melinda Keefe, Auteur ; Keith Olesen, Auteur ; Peter Saucier, Auteur Année de publication : 2011 Article en page(s) : p. 1-10 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Calorimétrie Latex Pigments Résistance aux taches Revêtements:Peinture Surfactants Index. décimale : 667.9 Revêtements et enduits Résumé : Water-based coating formulations contain many components, such as latex binder, pigment, dispersant, thickener, and surfactant. Complex interactions between these components affect properties of the coating in both the wet and dried states. For example, rheology of the paint is dependent on the interactions of components in the formulation. Pigment interaction can affect the degree of dispersion and, therefore, have ramifications on end use properties such as hiding and tint strength of the paint film. Isothermal titration calorimetry has been used to determine the enthalpy of interaction of the coating components. Representative examples will be given to demonstrate structure–property relationships that correlate the interactions of latex, pigment, surfactant, dispersant, and thickener with paint viscosity as well as end use performance parameters such as adhesion and tint strength. Note de contenu : INSTRUMENTATION LATEX PIGMENT INTERACTION : - Effect of dispersant on the interaction of precipitated calcium carbonate with S/B latex - Effect of latex serum replacement on the interaction of PCC with S/B latex - Tint strength PIGMENT SURFACTANT INTERACTION STAIN RESISTANCE DOI : 10.1007/s11998-009-9234-9 En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-009-9234-9.pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=10917 [article]

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Quantitative method for evaluating fingernail induced mar damage of coatings / Jeff Anderson in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 10, N° 4 (07/2013)  

[article]  inJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 10, N° 4 (07/2013) . - p. 579-588 Titre : Quantitative method for evaluating fingernail induced mar damage of coatings Type de document : texte imprimé Auteurs : Jeff Anderson, Auteur ; Matthew Brown, Auteur ; Charles Kan, Auteur ; Nanjundiah Kumar, Auteur ; Vivek Kalihari, Auteur Année de publication : 2013 Article en page(s) : p. 579-588 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Ongles Résistance à l'abrasion Revêtements:Peinture Index. décimale : 667.9 Revêtements et enduits Résumé : A traditional method of coating qualification, known as fingernail mar resistance, historically has been practiced in industry where the back of a fingernail is “flicked” across a coating surface. Any resulting permanent mark from this qualitative analysis is deemed a failure. Lack of quantitative analysis and control over experimental parameters in this type of test limits its utility as an analytical test. Fundamental understanding of this specific type of mar damage is hindered, and research efforts to find unique solutions based on changes in polymer structure are frustrated by the binary response of the test. In an attempt to rectify the situation, a high speed mar tester was developed to mimic and quantify the effects of the fingernail flick test. The work described in this report demonstrates the applicability of this tester to produce similar damage to that of the fingernail test. In addition, a quantitative method enabling differentiation of the degree of mar damage of different coatings is described. Finally, the method is demonstrated by differentiating mar resistance of coatings that show similar qualitative results in fingernail flick testing. Note de contenu : - EXPERIMENTAL PROCEDURES : Stylus - Velocity of stylus - Coating selection and preparation - Surface profile - Image capture - Image analysis - Visual analysis - Dynamic friction - Evaluation of fingernail mar - RESULTS AND DISCUSSION : Surface profile of mar and scratch damage - Visual evaluation DOI : 10.1007/s11998-013-9478-2 En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-013-9478-2.pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=19107 [article]

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