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Water absorption mechanism and some anomalous effects on the mechanical and viscoelastic behavior of an epoxy system
Journal of applied polymer science, 2006-02, Vol.99 (4), p.1328-1339
Papanicolaou, G. C.
Kosmidou, Th.V.
Vatalis, A. S.
Delides, C. G.
2006
Volltextzugriff (PDF)
Details
Autor(en) / Beteiligte
Papanicolaou, G. C.
Kosmidou, Th.V.
Vatalis, A. S.
Delides, C. G.
Titel
Water absorption mechanism and some anomalous effects on the mechanical and viscoelastic behavior of an epoxy system
Ist Teil von
Journal of applied polymer science, 2006-02, Vol.99 (4), p.1328-1339
Ort / Verlag
Hoboken: Wiley Subscription Services, Inc., A Wiley Company
Erscheinungsjahr
2006
Quelle
Wiley Online Library - AutoHoldings Journals
Beschreibungen/Notizen
During the past decades there has been a great accumulation of important data on the diffusion of water molecules in polymeric solids and its effect on the mechanical and viscoelastic behavior of polymers. It has become apparent that in many cases diffusion in polymers as well as its effect exhibits features that cannot be expected from classical theories and that such departures are related to the molecular structure characteristics of polymers. In the present investigation, the mechanical and viscoelastic behavior of an epoxy resin system is studied as a function of absorbed water, temperature, and time of immersion. Water sorption was achieved by immersing the material in distilled water at constant temperature of 60°C and 80°C for 2, 5, 8, 13, 32, 74, 128, 266, 512, 1024, and 1536 h. Subsequently the specimens were tested in static and dynamic three‐point bending tests to study their mechanical and viscoelastic behavior. The variation of Tg, tan δ, bending modulus, and strength was measured as a function of exposure time and respective percentage of water uptake for both temperatures. Some anomalies in their behavior due to water absorption were observed, and a model for the description of the experimentally observed mechanical behavior due to hygrothermal aging is proposed. The results show that the model predictions are in good agreement with experimental findings. © 2005 Wiley Periodicals, Inc. J Appl Polym Sci 99: 1328–1339, 2006
Sprache
Englisch
Identifikatoren
ISSN: 0021-8995
eISSN: 1097-4628
DOI: 10.1002/app.22095
Titel-ID: cdi_proquest_miscellaneous_28718248
Format
–
Schlagworte
Ageing
,
Applied sciences
,
epoxy resin
,
Exact sciences and technology
,
mechanical degradation
,
Physical properties
,
Polymer industry, paints, wood
,
Properties and testing
,
Technology of polymers
,
water diffusion
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