| Titre : |
On the role of water, temperature, and glass transition in the corrosion protection behavior of epoxy coatings for underground pipelines |
| Type de document : |
texte imprimé |
| Auteurs : |
Hung M. Ha, Auteur ; Akram Alfantazi, Auteur |
| Année de publication : |
2015 |
| Article en page(s) : |
p. 1095-1110 |
| Note générale : |
Bibliogr. |
| Langues : |
Américain (ame) |
| Catégories : |
Epoxydes
Hautes températures
Pipelines -- Revêtements protecteurs
Revêtements -- Corrosion
Revêtements -- Détérioration
Revêtements organiques
Transition vitreuse
|
| Index. décimale : |
667.9 Revêtements et enduits |
| Résumé : |
Water transport kinetics in the coatings were markedly enhanced and the coating impedances decreased exponentially as temperature increased. The effect of temperature on the coating impedance was attributed to the change in the defect area fraction caused by the thermal expansion of the polymers. The temperature dependence of coating impedance was reversible in a non-aqueous environment but was irreversible in an aqueous environment. This is attributed to the plasticization effect of water on the polymer chains. The effect of glass transition on coating impedances during a short period of exposure to heat source was insignificant. |
| Note de contenu : |
- EXPERIMENT : Materials and electrolytes - Differential scanning calorimetry (DSC) - Fourier transform infrared spectroscopy (FTIR) - Water uptake - Electrochemical impedance spectroscopy (EIS) - EIS data analysis
- RESULTS : Determination of Tg - Water absorption, desorption, and transport - Effect of water absorption and temperature on polymer chemistry - Effect of temperature on coating resistance and capacitance - Effect of repeated heating and cooling on coating performance |
| DOI : |
10.1007/s11998-015-9705-0 |
| En ligne : |
https://link.springer.com/content/pdf/10.1007%2Fs11998-015-9705-0.pdf |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=24968 |
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 12, N° 6 (11/2015) . - p. 1095-1110
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