An evaluation of leading distemper paints and their cost optimisation using opacity pigments / Smita Shelar in PAINTINDIA, Vol. LXIX, N° 9 (09/2019)  

[article]  inPAINTINDIA > Vol. LXIX, N° 9 (09/2019) . - p. 86-90 Titre : An evaluation of leading distemper paints and their cost optimisation using opacity pigments Type de document : texte imprimé Auteurs : Smita Shelar, Auteur ; Andy White, Auteur ; Paul Dietz, Auteur Année de publication : 2019 Article en page(s) : p. 86-90 Langues : Anglais (eng) Catégories : Coût -- Contrôle Diluants Dioxyde de titane -- Suppression ou remplacement Dip-coating Formulation (Génie chimique) Opacité (optique) Pigments Index. décimale : 667.6 Peintures Résumé : Distemper paints have long been associated with and play an important part of the Indian paint market. Designed as economical paints that can refreshed frequently to help keep building walls clean and bright, many different brands are available from small local producers to the largest of multinational companies. This evaluation looked at six commercially available Distemper products, five from the leading, multination brands and one from a local (Mumbai) supplier. The chosen paints were all purchased from locations within Mumbai in September 2018. The paints were tested for their application and optical properties and the results compared to give a ranking of performance. The same paints were then evaluated, by various analytical techniques, to determine their approximate composition including titanium dioxide type and level and extender types and levels. Using the reverse-engineered formulations, the paints were then tested with various levels of FP-Pigments Opacity pigment replacing the titanium dioxide pigment. Note de contenu : - Part 1 : Comparison of the six commercial paints - Part 2 : Analysis and reverse engineering of the six commercial paints - Part 3 : Cost efficient distemper formulation with FP-pigments opacity pigments - Table 1 : Suggested let-down levels and effect on weight and volume solids - Table 2 : XRF data for main elemental composition - Table 3 : Pigment and extender type in each paint - Table 4 : Approximate pigment and extender content - Table 5 : Generic starting point formulation - Fig. 1 : Contrast ratio at 150µm wet film thickness - all paints diluted as recommended - Fig. 2 : Contrast ratio at a spreading rate of 15m2/l - all paints diluted as recommended - Fig. 3 : Spreading rate for a contrast ratio of 98% - all paints diluted as recommended - Fig. 4 : Contrast ratio vs dry film thickness - all paints diluted as recommended - Fig. 5 : SEM and approximated composition of Paint 1 - Fig. 6 : Chart of replacement ratio vs initial TiO2 loading En ligne : https://drive.google.com/file/d/1uXVGPKkbuKXBix6AS9Vk9LpexZ-wsaac/view?usp=share [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=33075 [article]

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