Lee, Seung Hwan Yu, Seunggun Shahzad, Faisal Hong, Jun Pyo Kim, Woo Nyon Park, Cheolmin Hong, Soon Man Koo, Chong Min 2024-01-20T01:31:50Z 2024-01-20T01:31:50Z 2021-09-01 2017-05-26 0266-3538 https://pubs.kist.re.kr/handle/201004/122723 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. (C) 2017 Elsevier Ltd. All rights reserved. English ELSEVIER SCI LTD GRAPHENE NANOCOMPOSITES CONDUCTIVITY FILMS Highly anisotropic Cu oblate ellipsoids incorporated polymer composites with excellent performance for broadband electromagnetic interference shielding Article 10.1016/j.compscitech.2017.03.016 1 COMPOSITES SCIENCE AND TECHNOLOGY, v.144, pp.57 - 62 COMPOSITES SCIENCE AND TECHNOLOGY 144 57 62 scie scopus 000401205900008 2-s2.0-85015728657 Materials Science, Composites Materials Science Article GRAPHENE NANOCOMPOSITES CONDUCTIVITY FILMS EMI shielding Percolation threshold Cu ellipsoid High anisotropy Nanocomposite