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Monitoring the degree of curing in coatings using contact angle and surface reflectance measurements / Saminu Musa Magami in SURFACE COATINGS INTERNATIONAL, Vol. 97.5 (10/2014)  

[article]  inSURFACE COATINGS INTERNATIONAL > Vol. 97.5 (10/2014) . - p. 250-253 Titre : Monitoring the degree of curing in coatings using contact angle and surface reflectance measurements Type de document : texte imprimé Auteurs : Saminu Musa Magami, Auteur Année de publication : 2014 Article en page(s) : p. 250-253 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Angle de contact Dioxyde de titane Epoxydes Hautes températures Revêtement -- Séchage:Peinture -- Séchage Spectroscopie de réflectance Index. décimale : 667.9 Revêtements et enduits Résumé : Surface wetting and spectrophotometric reflectance are important properties that are commonly used in the characterisation of the products arising in the surface coating-related industries. In this study, these two techniques were used as simple methods of monitoring the curing behavior of coatings of interest to the packaging sector. The fluid coatings were cured at different temperatures (160, 180, 200, 220, and 240°C) for 10 minutes. In an extended study, the curing of the coatings was also carried out at 200°C for different time periods (5, 10 and 15 minutes, respectively). The results show that the techniques that were developed can be used as quality control procedures to monitor the extent to which the coatings are cured. Clear correlations were noted between instrumental measurements and visual assessments of the coatings. These techniques can be used to establish the consequences of employing variations in the curing conditions of the coatings because they lead to variation in molecular weight, structure development, film formation, cross-linking and interlocking in the coatings, as a consequence of increasing either the curing time or the curing temperature. Note de contenu : - MATERIALS AND METHODS : Materials - Coatings application and curing - Contact angle measurement and reflectance spectrophotometry - RESULTS AND DISCUSSION : Wetting characteristics- Visual region assessment - Surface spectrophotometric measurements En ligne : https://drive.google.com/file/d/13rCJZpFw7qbNeCU3F-A064rHr4pPEtTh/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=22162 [article]

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