Density-tunable lightweight polymer composites with dual-functional ability of efficient EMI shielding and heat dissipation
- Authors
- Lee, Seung Hwan; Yu, Seunggun; Shahzad, Faisal; Kim, Woo Nyon; Park, Cheolmin; Hong, Soon Man; Koo, Chong Min
- Issue Date
- 28-9월-2017
- Publisher
- ROYAL SOC CHEMISTRY
- Citation
- NANOSCALE, v.9, no.36, pp.13432 - 13440
- Indexed
- SCIE
SCOPUS
- Journal Title
- NANOSCALE
- Volume
- 9
- Number
- 36
- Start Page
- 13432
- End Page
- 13440
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/82187
- DOI
- 10.1039/c7nr02618h
- ISSN
- 2040-3364
- Abstract
- Lightweight dual-functional materials with high EMI shielding performance and thermal conductivity are of great importance in modern cutting-edge applications, such as mobile electronics, automotive, aerospace, and military. Unfortunately, a clear material solution has not emerged yet. Herein, we demonstrate a simple and effective way to fabricate lightweight metal-based polymer composites with dual-functional ability of excellent EMI shielding effectiveness and thermal conductivity using expandable polymer bead-templated Cu hollow beads. The low-density Cu hollow beads (rho similar to 0.44 g cm(-3)) were fabricated through electroless plating of Cu on the expanded polymer beads with ultralow density (rho similar to 0.02 g cm(-3)). The resulting composites that formed a continuous 3D Cu network with a very small Cu content (similar to 9.8 vol%) exhibited excellent EMI shielding (110.7 dB at 7 GHz) and thermal conductivity (7.0 W m(-1) K-1) with isotropic features. Moreover, the densities of the composites are tunable from 1.28 to 0.59 g cm(-3) in accordance with the purpose of their applications. To the best of our knowledge, the resulting composites are the best lightweight dual-functional materials with exceptionally high EMI SE and thermal conductivity performance among synthetic polymer composites.
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Collections - College of Engineering > Department of Chemical and Biological Engineering > 1. Journal Articles
- Graduate School > KU-KIST Graduate School of Converging Science and Technology > 1. Journal Articles
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