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Title: Mechanical, thermal, and acoustic properties of aluminum foams impregnated with epoxy/graphene oxide nanocomposites
Author: Pinto, Susana C.
Marques, Paula A.A.P.
Vesenjak, Matej
Vicente, Romeu
Godinho, Luís
Krstulović-Opara, Lovre
Duarte, Isabel
Keywords: Open-cell aluminum foam
Epoxy resin
Graphene oxide
Hybrid structures
Mechanical, thermal and acoustic properties
Issue Date: Nov-2019
Publisher: MDPI
Abstract: Hybrid structures with epoxy embedded in open-cell aluminum foam were developed by combining open-cell aluminum foam specimens with unreinforced and reinforced epoxy resin using graphene oxide. These new hybrid structures were fabricated by infiltrating an open-cell aluminum foam specimen with pure epoxy or mixtures of epoxy and graphene oxide, completely filling the pores. The effects of graphene oxide on the mechanical, thermal, and acoustic performance of epoxy/graphene oxide-based nanocomposites are reported. Mechanical compression analysis was conducted through quasi-static uniaxial compression tests at two loading rates (0.1 mm/s and 1 mm/s). Results show that the thermal stability and the sound absorption coefficient of the hybrid structures were improved by the incorporation of the graphene oxide within the epoxy matrix. However, the incorporation of the graphene oxide into the epoxy matrix can create voids inside the epoxy resin, leading to a decrease of the compressive strength of the hybrid structures, thus no significant increase in the energy absorption capability was observed.
Peer review: yes
DOI: 10.3390/met9111214
ISSN: 2075-4701
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Appears in Collections:TEMA - Artigos
DECivil - Artigos
DEM - Artigos

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