Filler size effect in graphite/paraffine wax composite on electromagnetic interference shielding performance

作者: Sosan Hwang , Chae Lin Kim , Yongha Kim , Min Gyu Song , Jaewon Lee

DOI: 10.1007/S11814-020-0550-1

关键词:

摘要: Graphite exhibits electromagnetic wave attenuation and high electrical conductivity. In this study, we analyzed the interference shielding effectiveness (EMI SE) performance electric conductivity of composites fabricated by varying size (mean size: 6–100 µm) graphite fillers explained resulting attributes through relative permittivity geometrical characteristics filler. When graphite/paraffine wax composite was using large-sized (KS150), spacing between became widened, enabling waves to leak gap. The analysis results indicated that KS150 exhibited an EMI SE under 10 dB when filler content 30 wt%. However, increased 50 wt%, improved sharply 40 dB. contrast, filled with small-sized (KS6), having a ratio surface volume, greater than largesized at low loading. related graphite-filled revealed greatly affects SE. KS75 showed 53.0 2,000 S/m.

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