Highly anisotropic Cu oblate ellipsoids incorporated polymer composites with excellent performance for broadband electromagnetic interference shielding. (26th May 2017)

• Record Type: Journal Article
• Authors: Lee, Seung Hwan; Yu, Seunggun; Shahzad, Faisal; Hong, Jun Pyo; Kim, Woo Nyon; Park, Cheolmin; Hong, Soon Man; Koo, Chong Min
• Is Part Of: Composites science and technology. Volume 144(2017)
• Page Start: 57
• Page End: 62
• Publication Date: 2017-05-26
• Subjects: EMI shielding -- Percolation threshold -- Cu ellipsoid -- High anisotropy -- Nanocomposite; Composite materials -- Periodicals; Composite materials; Fibrous composites; Periodicals; 620.118
• DOI: 10.1016/j.compscitech.2017.03.016
• Languages: English
• ISSNs: 0266-3538

Abstract

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.