Mass transport mechanism for the formation of latex-modified epoxy coatings by evaporation from aqueous dispersions / Sidney L. Phillips in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 1, N° 4 (10/2004)  

[article]  inJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 1, N° 4 (10/2004) . - p. 315-327 Titre : Mass transport mechanism for the formation of latex-modified epoxy coatings by evaporation from aqueous dispersions Type de document : texte imprimé Auteurs : Sidney L. Phillips, Auteur ; M. Troy Davis, Auteur ; Daniel J. Phillips, Auteur Année de publication : 2004 Article en page(s) : p. 315-327 Note générale : Bibliogr. Langues : Américain (ame) Tags : Etude  expérimentale  comparative  théorique  Transfert  chaleur  masse  Modèle  cinétique  Modélisation  Mécanisme  formation  Cinétique  Formation  film  Séchage  Dispersion  aqueuse  Matériau  revêtement  Epoxyde  résine Index. décimale : 667.9 Revêtements et enduits Résumé : The transport mechanism for the evaporation of dispersing liquid during the solidification of an epoxy dispersion that had been stabilized to prevent crack formation with a latex dispersion was studied. Aqueous dispersions consisting of an experimentally determined ratio of epoxy resin and nitrile latex were evaporated at 35°C. When the dispersion was evaporated under controlled conditions without forced air flow, a flexible and adherent polymer material formed. The mechanism for coalescence was related to the loss in weight of dispersing liquid during an initial zero order kinetics stage. This was followed by a rate-controlled Fick's law diffusion through the developing coating with subsequent evaporation to the atmosphere. Experimental measurements are compared with theoretical predictions. The rate constant for the zero order time frame is 0.086 ± 0.02 h-1. In the second time frame, Ficks's law evaporation rate constant is 0.046 ± 0.017 cm.h-1 with a diffusion coefficient of 0.00092 ± 0.00051 cm2.hr-1 at 35 ± 1 °C and RH 35 ± 7%. Applications for evaporation kinetics are discussed. DOI : 10.1007/s11998-004-0033-z En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-004-0033-z.pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=3862 [article]

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Code-barres	Cote	Support	Localisation	Section	Disponibilité
000588	-	Périodique	Bibliothèque principale	Documentaires	Disponible

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