PHOTO-AGING OF HIGH PERFORMANCE EPOXIES: SPECTROSCOPIC, MECHANICAL AND DYNAMIC-MECHANICAL INVESTIGATIONS

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 thermal analysis (DMTA) and compressive mechan...

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Bibliographic Details
Main Authors: Ragosta, G, Musto, P, Abbate, M, Scarinzi, G
Format: Conference Proceeding
Language:English
Online Access:Get full text
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Summary: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 thermal analysis (DMTA) and compressive mechanical tests. The FTIR measurements allowed us to monitor the degradation process of the several groups present in the TGDDM/DDS network and to obtain reliable kinetic data. On this basis the most likely photo-degradation mechanisms were proposed, and the main pathways through which the degradation reaction proceeds were identified. Dynamic-mechanical measurements and mechanical 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.
ISSN:0094-243X
DOI:10.1063/1.2988968