Highly anisotropic Cu oblate ellipsoids incorporated polymer composites with excellent performance for broadband electromagnetic interference shielding

Seung Hwan Lee, Seunggun Yu, Faisal Shahzad, Jun Pyo Hong, Woo Nyon Kim, Cheolmin Park, Soon Man Hong, Chong Min Koo

Research output: Contribution to journalArticle

20 Citations (Scopus)

Abstract

In this study, highly anisotropic Cu oblate ellipsoids incorporated polymer composites were prepared that revealed excellent broadband electromagnetic shielding effectiveness of 80.0 to 62.1 dB at a frequency region between 300.0 KHz and 12.0 GHz, at low Cu contents. Cu-coated hollow polymer beads were fabricated through electroless plating of Cu on the polymer hollow beads. The hollow polymer beads were prepared through thermal expansion of acrylonitrile-based polymer beads containing a blowing agent. These beads were capable of incorporating highly anisotropic 2-dimensional (2D) Cu oblate ellipsoids into polymer composite through simple compression molding process. The resulting broadband electromagnetic shielding performance attributes to a low percolation behavior of the composites due to high anisotropy of the conductive Cu filler and their multilayered structure in the composites.

Original languageEnglish
Pages (from-to)57-62
Number of pages6
JournalComposites Science and Technology
Volume144
DOIs
Publication statusPublished - 2017 May 26

Keywords

  • Cu ellipsoid
  • EMI shielding
  • High anisotropy
  • Nanocomposite
  • Percolation threshold

ASJC Scopus subject areas

  • Ceramics and Composites
  • Engineering(all)

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