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Fast drying high solids latices / Fred Bückmann in EUROPEAN COATINGS JOURNAL (ECJ), N° 12/95 (12/1995)
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Titre : Fast drying high solids latices Type de document : texte imprimé Auteurs : Fred Bückmann, Auteur ; Folkert Bakker, Auteur Année de publication : 1995 Article en page(s) : p. 922-929 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Acrylate de butyle
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Humidité -- Absorption
Latex
Liants
Mélanges (chimie)
Méthacrylate de méthyle
Revêtement -- Séchage:Peinture -- Séchage
Revêtements en phase aqueuse:Peinture en phase aqueuse
Rhéologie
Taille des particules
ViscositéIndex. décimale : 667.9 Revêtements et enduits Résumé : This paper describes a study of several model bimodal particle size distribution latex systems produced by blending large and small particle size anionically stabilised latices over a wide range of blend ratios. Minimum film forming temperature (MFT), drying rate and water uptake measurements were carried out. At a 80/20 weight ratio large/small particles, a minimum was observed in the MFT and also in the extent of water absorption of latex films with short drying times, although for films dried for longer periods, no such minimum in water absorption was observed. Drying profiles fit well with existing models, except for the 80/20 I/s blend which exhibits more complex drying behaviour. Low shear rate viscosity of selected blends was measured over a range of latex solids contents. The rheological data was fitted by the Krieger-Dougherty equation which was used to calculate the maximum volume packing fraction. An 80/20 blend (large/small) was found to exhibit a higher maximum volume fraction than that of either pure component of the blend, demonstrating the better packing achievable by blending. Finally several different application areas will be discussed. Note de contenu : - Selection of application areas for bimodal dispersions Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=11377
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