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Mechanical, electrical, and electromagnetic properties of hybrid graphene/glass fiber/epoxy composite

Publikation: Bidrag til tidsskrift/Konferencebidrag i tidsskrift /Bidrag til avis › Tidsskriftartikel › Forskning › peer review

DOI

  • Kamila Kunrath
  • Eduardo Fischer Kerche, Universidade Federal do Rio Grande do Sul
    • ,
  • Mirabel Cerqueira Rezende, Universidade Federal de Sao Paulo
    • ,
  • Sandro Campos Amico, Universidade Federal do Rio Grande do Sul

This study presents the development of a novel three-component composite based on glass fiber/epoxy resin/graphene nanoplatelets (GNPs) aiming to obtain radar absorbing material (RAM). The composite was produced by vacuum-assisted resin transfer molding and characterized under tensile and flexural testing, reflectivity, and electrical conductivity analyses. The mechanical properties were not significantly affected by the incorporation of GNP nanofiller. However, electrical conductivity of the three-component composites increased sharply and the percolation threshold was reached with around 3 wt% GNP (surface conductivity) and 4 wt% GNP (volumetric conductivity). Furthermore, reflectivity showed excellent attenuation (up to 99.99%) in the 8.2-12.4 GHz frequency range. These attenuation levels were obtained even at low concentrations (0.1 wt%) of GNP nanofiller, indicating the possibility of producing composites with low cost and easy processing for advanced applications as RAMs.

OriginalsprogEngelsk
TidsskriftPolymers and Polymer Composites
Vol/bind27
Nummer5
Sider (fra-til)262-267
Antal sider6
ISSN0967-3911
DOI
StatusUdgivet - jun. 2019
Eksternt udgivetJa

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