ASTM accelerated dirt pickup resistance method with correlation to natural outsdoor weathering / Keith Alderfer in COATINGS TECH, Vol. 19, N° 6 (07/2022)  

[article]  inCOATINGS TECH > Vol. 19, N° 6 (07/2022) . - p. 38-47 Titre : ASTM accelerated dirt pickup resistance method with correlation to natural outsdoor weathering Type de document : texte imprimé Auteurs : Keith Alderfer, Auteur ; James Maher, Auteur ; Partha Majumdar, Auteur ; Jeff Sweeney, Auteur Année de publication : 2022 Article en page(s) : p. 38-47 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Essais accélérés (technologie) Peinture -- Normalisation Résistance à la salissure Résistance aux conditions climatiques Revêtements en bâtiment:Peinture en bâtiment Index. décimale : 667.9 Revêtements et enduits Résumé : The Architectural Subcommittee of ASTM’s Paint and Related Coatings, Materials and Applications Committee (D01.42), in collaboration with industrial partners, investigated an accelerated laboratory method to assess the exterior dirt pickup resistance of architectural coatings. A concurrent exterior exposure study was conducted with seven commercial paints across seven locations with varied climates throughout the United States for 36 months. The accelerated laboratory method explored multiple variables including dry time of the coating and QUV exposure time. For the exterior study, to understand the impact of multiple variables and their interactions on final response, a robust statistical methodology was applied utilizing both a mixed model with fixed and random effects to account for repeated measure analysis and a standard least square linear regression. Finally, the results from the two methods, laboratory and exterior, were compared to understand the similarity of the overall trends. Note de contenu : - EXPERIMENTAL : Materials - TEST PROCEDURES : Accelerated lab DPUR method - Natural weathering of paints for assessment of DPUR - RESULTS AND DISCUSSION : Results of accelerated DPUR single lab study - Results and analysis of exterior weathering DPUR study - Data analysis/modeling - CORRELATION OF PROPOSED ACCELERATED METHOD WITH EXTERIOR EXPOSURE : Mixed model approach for RMA - Table 1 : Description of paints used in the study - Table 2 : Results of accelerated lab DPUR method by paint ID, sheen category, and quality category En ligne : https://drive.google.com/file/d/1o34aGmHLfPF0iufRg-pHqlLFbpKgxIbr/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=38225 [article]

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