期刊
PROGRESS IN ORGANIC COATINGS
卷 69, 期 4, 页码 322-329出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.porgcoat.2010.07.005
关键词
Epoxy coatings; Oxidation; Glass transition; Chain scission
Degradation induced by thermal (50-110 degrees C) and radio-oxidation of low T-g epoxy-amine networks has been studied. It has been found that oxidation leads mainly to amide groups formation at the vicinity of tertiary amines whatever ageing conditions (thermal or radio-oxidation at 200 Gy h(-1)). In addition, some species as acids, peracids or formates have been revealed indicating a chain scission process. Physical modifications as T-g decrease and soluble fraction increase due to chain scission process, have been correlated with chemical modifications. (C) 2010 Elsevier B.V. All rights reserved.
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