Radiochemical ageing of epoxy coating for nuclear plants

Article dans une revue avec comité de lecture
Auteur
QUEIROZ, D. P.R.
FRAÏSSE, Frédéric
KUNTZ, Matthias
528389 EDF R&D [EDF R&D]
VERDU, Jacques
14421 Laboratoire d'Ingénierie des Matériaux [LIM]
301320 École Nationale Supérieure d'Arts et Métiers [ENSAM]
ccFAYOLLE, Bruno
86289 Laboratoire Procédés et Ingénierie en Mécanique et Matériaux [PIMM]

URI
http://hdl.handle.net/10985/15999
DOI
10.1016/j.radphyschem.2009.08.034
Date
2010
Journal
Radiation Physics and Chemistry

Résumé

The degradation of an epoxy-amine network exposed to gamma irradiation in oxygen atmosphere has been studied by using a variety of analytical methods, including infrared spectroscopy (FTIR), differential scanning calorimetry (DSC), and sol-gel analysis. Results show that the oxidation of epoxy systems grows with the irradiation dose. Hydroperoxides, which are species resulting from oxidation, were identified and quantified by DSC. As indicated by the sol-gel analysis, the mechanism of degradation of chain scission seems to be predominant over crosslinking. The modifications induced by irradiation reflect in a greater capacity of water absorption.

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