Radiochemical ageing of epoxy coating for nuclear plants

被引：19

作者：

Queiroz, D. P. R. ^{[1
]}

Fraisse, F. ^{[1
]}

Fayolle, B. ^{[1
]}

Kuntz, M. ^{[2
]}

Verdu, J. ^{[1
]}

机构：

[1] Arts & Metiers Paristech, UMR 8006, Lab Ingn Mat, F-75013 Paris, France

[2] EDF R&D, Dept Mat & Mecan Composants, F-77250 Moret Sur Loing, France

来源：

RADIATION PHYSICS AND CHEMISTRY | 2010年 / 79卷 / 03期

关键词：

Epoxy network; Radiochemical ageing; Structure characterization; HYDROPEROXIDE TITRATION; RESINS; IRRADIATION; DEGRADATION; OXIDATION; POLYMERS; SYSTEM; DSC;

D O I：

10.1016/j.radphyschem.2009.08.034

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

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 (MR), 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. (C) 2009 Elsevier Ltd. All rights reserved.

引用

页码：362 / 364

页数：3

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