Abstract
Metal-coated polymer bead based composites are promising as electromagnetic interference (EMI) shielding and thermally conductive materials because they form a percolation 3D metal shell network at very low filler content. Herein, we fabricated 3D Cu/Ag shell network composites through electroless plating of metal on polymer beads and a simple hot pressing technique. Cu and Ag shells provide a continuous network for electron and heat conduction; thus, yielding excellent EMI shielding effectiveness of 110 dB at a 0.5 mm thickness and a thermal conductivity of 16.1 W m−1K−1 at only 13 vol % of metal filler. The properties of composites depend on the size of polystyrene (PS) beads and large size metal-coated PS bead composites exhibit higher electrical conductivity, EMI shielding effectiveness, and thermal conductivity than small size bead composites. These results are ascribed to the reduction in the number of contact interfaces between metal-coated beads, which minimizes the interfacial resistance. This study is set to pave the way for designing advanced EMI shielding and thermal conductive materials by a scalable and efficient synthesis approach.
| Original language | English |
|---|---|
| Article number | 107778 |
| Journal | Composites Science and Technology |
| Volume | 182 |
| DOIs | |
| Publication status | Published - 2019 Sep 29 |
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Keywords
- 3D metal shell network
- EMI shielding
- Low percolation
- Thermal conductivity
ASJC Scopus subject areas
- Ceramics and Composites
- Engineering(all)
Cite this
Low percolation 3D Cu and Ag shell network composites for EMI shielding and thermal conduction. / Lee, Seung Hwan; Yu, Seunggun; Shahzad, Faisal; Hong, Junpyo; Noh, Seok Jin; Kim, Woo Nyon; Hong, Soon Man; Koo, Chong Min.
In: Composites Science and Technology, Vol. 182, 107778, 29.09.2019.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Low percolation 3D Cu and Ag shell network composites for EMI shielding and thermal conduction
AU - Lee, Seung Hwan
AU - Yu, Seunggun
AU - Shahzad, Faisal
AU - Hong, Junpyo
AU - Noh, Seok Jin
AU - Kim, Woo Nyon
AU - Hong, Soon Man
AU - Koo, Chong Min
PY - 2019/9/29
Y1 - 2019/9/29
N2 - Metal-coated polymer bead based composites are promising as electromagnetic interference (EMI) shielding and thermally conductive materials because they form a percolation 3D metal shell network at very low filler content. Herein, we fabricated 3D Cu/Ag shell network composites through electroless plating of metal on polymer beads and a simple hot pressing technique. Cu and Ag shells provide a continuous network for electron and heat conduction; thus, yielding excellent EMI shielding effectiveness of 110 dB at a 0.5 mm thickness and a thermal conductivity of 16.1 W m−1K−1 at only 13 vol % of metal filler. The properties of composites depend on the size of polystyrene (PS) beads and large size metal-coated PS bead composites exhibit higher electrical conductivity, EMI shielding effectiveness, and thermal conductivity than small size bead composites. These results are ascribed to the reduction in the number of contact interfaces between metal-coated beads, which minimizes the interfacial resistance. This study is set to pave the way for designing advanced EMI shielding and thermal conductive materials by a scalable and efficient synthesis approach.
AB - Metal-coated polymer bead based composites are promising as electromagnetic interference (EMI) shielding and thermally conductive materials because they form a percolation 3D metal shell network at very low filler content. Herein, we fabricated 3D Cu/Ag shell network composites through electroless plating of metal on polymer beads and a simple hot pressing technique. Cu and Ag shells provide a continuous network for electron and heat conduction; thus, yielding excellent EMI shielding effectiveness of 110 dB at a 0.5 mm thickness and a thermal conductivity of 16.1 W m−1K−1 at only 13 vol % of metal filler. The properties of composites depend on the size of polystyrene (PS) beads and large size metal-coated PS bead composites exhibit higher electrical conductivity, EMI shielding effectiveness, and thermal conductivity than small size bead composites. These results are ascribed to the reduction in the number of contact interfaces between metal-coated beads, which minimizes the interfacial resistance. This study is set to pave the way for designing advanced EMI shielding and thermal conductive materials by a scalable and efficient synthesis approach.
KW - 3D metal shell network
KW - EMI shielding
KW - Low percolation
KW - Thermal conductivity
UR - http://www.scopus.com/inward/record.url?scp=85070524146&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85070524146&partnerID=8YFLogxK
U2 - 10.1016/j.compscitech.2019.107778
DO - 10.1016/j.compscitech.2019.107778
M3 - Article
VL - 182
JO - Composites Science and Technology
JF - Composites Science and Technology
SN - 0266-3538
M1 - 107778
ER -