文章基本信息

标题：Influence of gamma irradiation on the chemical and physical properties of DGEDDS / PDA and DGEDDS / MDA epoxy resins
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作者：Rami N. ; Meghraoui H. ; Ziraoui R. 等
期刊名称：Journal of Materials and Environmental Science
印刷版ISSN：2028-2508
出版年度：2010
卷号：1
期号：4
页码：277-288
出版社：University of Mohammed Premier Oujda
摘要：In this work we studied the effects of exposure to gamma radiation on two type epoxy resins: diglycidyléther of bisphenol A (DGEBA) and diglycidyether 4,4 '- dihydroxydiphenyl sulfone (DGEDDS) crosslinked with methylenedianiline (MD A) and 1,2-phenylenediamine (PDA). These resins were synthesized by condensing mass of the diol with epichlorohydrin in a basic medium. IRTF spectrometry and 1H NMR was used to identify their structures before crosslinking. Then we followed the aging ATG by X microanalysis also allowed us to highlight the phenomenon of oxidation of the surface observed by SEM photos. Knowledge of the glass transition temperature and the starting temperature of degradation indicates a correlation between thermal stability and structure. The improvement of thermal properties could be a key issue to ensure structural stability of a matrix and therefore a better resistance to radiation
关键词：Epoxy resin; gamma irradiation; TGA; SEM