环氧树脂
材料科学
复合材料
动态力学分析
聚合物
作者
G. Ragosta,Mario Abbate,Pellegrino Musto,Gennaro Scarinzi
标识
DOI:10.1002/masy.200951204
摘要
Abstract The photo‐oxidative degradation of a densely cross‐linked epoxide/diamine network based on tetraglycidyl‐4,4′ diaminodiphenylmethane (TGDDM) and 4,4′ diaminodiphenyl sulphone (DDS) has been investigated by FTIR spectroscopy, dynamic‐mechanical analysis (DMA) and compressive mechanical tests. The FTIR measurements allowed us to monitor the degradation process of the different groups present in the TGDDM/DDS network and to obtain reliable kinetic data. On this basis the most likely photo‐degradation mechanisms were proposed. Dynamic‐mechanical measurements and mechanical compressive tests were used to gain an insight in the effect of the photo‐oxidative degradation on the relaxation processes of the epoxy network and on the mechanical performances.
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