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Thermal and radio-oxidation of epoxy coatings

By C GALANT, Bruno Fayolle, Matthias KUNTZ and Jacques Verdu

Abstract

International audienceDegradation induced by thermal (50-110 °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

Topics: Oxidation, Chain scission, Epoxy coatings, Glass transition, [SPI.MAT]Engineering Sciences [physics]/Materials
Publisher: 'Elsevier BV'
Year: 2010
DOI identifier: 10.1016/j.porgcoat.2010.07.005
OAI identifier: oai:HAL:hal-02458293v1
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