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Evaluating water transport through high solid polyurethane coating using the EIS method / F. Rezaei in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 7, N° 2 (03/2010)

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[article]
inJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 7, N° 2 (03/2010) . - p. 209-217

Titre :	Evaluating water transport through high solid polyurethane coating using the EIS method
Type de document :	texte imprimé
Auteurs :	F. Rezaei, Auteur ; F. Sharif, Auteur ; Ali Asghar Sarabi, Auteur ; S. M. Kasiriha, Auteur ; M. Rahmanian, Auteur ; E. Akbarinezhad, Auteur
Année de publication :	2010
Article en page(s) :	p. 209-217
Note générale :	Bibliogr.
Langues :	Américain (ame)
Tags :	'Canalisation enterrée' 'Polyuréthane haute teneur solides' 'Coefficient diffusion eau''Spectroscopie électrochimique impédance'
Index. décimale :	667.9 Revêtements et enduits
Résumé :	Buried pipelines are commonly coated with high solid polyurethane to prevent corrosion. The diffusion of water through the coating plays an essential role in the performance and endurance of the coating. This study focuses on the evaluation of water diffusion through polyurethane coatings. The effects of thickness and ambient temperature on water diffusion through polyurethane, which is coated on mild steel and immersed in 3.5% (weight fraction) NaCl solution, are evaluated using electrochemical impedance spectroscopy (EIS). Experimental observations clearly indicate that the water diffusion coefficient strongly depends on service temperature and the thickness of coating. Higher temperature (lower than T g) increases water uptake of the polymer but no measurable changes were observed for the temperature change studied. EIS results show that the mechanism of corrosion does not change in the range of thicknesses and temperature investigated in this study.
DOI :	10.1007/s11998-009-9173-5
En ligne :	https://link.springer.com/content/pdf/10.1007%2Fs11998-009-9173-5.pdf
Format de la ressource électronique :	Pdf
Permalink :	https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=9067

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