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Hydrothermal aging of carbon reinforced epoxy laminates with nanofibrous mats as toughening interlayers
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2016 (English)In: Polymer degradation and stability, ISSN 0141-3910, E-ISSN 1873-2321, Vol. 126, 188-195 p.Article in journal (Refereed) PublishedText
Abstract [en]

Electrospun mats have been applied as toughening interlayers in high performance carbon fiber epoxy composites. While the toughening mechanism exerted by the mat at the interface is the subject of several recent studies, no investigations are reported on the aging behaviour of laminates comprising these nanostructured elements. This work investigates the influence of the combined effect of water and temperature (90 degrees C) on laminates with Nylon 6,6 electrospun membranes placed either at the middle plane only or at each interlayer. The water-uptake behaviour is modelled by a two-stage diffusion model and compared with the behaviour of the neat resin and of the laminate without mats. Interestingly, a lower water uptake is observed for the laminates with mat-modified interfaces and this is possibly due to a significantly reduced porosity. The effect of hydrothermal aging on the thermal (Tg) and mechanical properties (transverse flexural modulus and interlaminar shear strength) of the various laminates is also investigated.

Place, publisher, year, edition, pages
Elsevier, 2016. Vol. 126, 188-195 p.
Keyword [en]
Carbon reinforced epoxy composites, Electrospun nanofibers, Hydrothermal aging, Two-stage water uptake model, Thermo-mechanical properties, Interlaminar fracture toughness
National Category
Polymer Technologies
Identifiers
URN: urn:nbn:se:kth:diva-185352DOI: 10.1016/j.polymdegradstab.2016.02.011ISI: 000372764000022ScopusID: 2-s2.0-84959440635OAI: oai:DiVA.org:kth-185352DiVA: diva2:921757
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QC 20160421

Available from: 2016-04-21 Created: 2016-04-18 Last updated: 2016-04-21Bibliographically approved

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Dispenza, Clelia
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Fibre and Polymer Technology
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