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http://dx.doi.org/10.7234/composres.2015.28.6.333

Characterization of FeCo Magnetic Metal Hollow Fiber/EPDM Composites for Electromagnetic Interference Shielding  

Choi, Jae Ryung (Functional Composites Department, Korea Institute of Materials Science (KIMS))
Jung, Byung Mun (Functional Composites Department, Korea Institute of Materials Science (KIMS))
Choi, U Hyeok (Functional Composites Department, Korea Institute of Materials Science (KIMS))
Cho, Seung Chan (Functional Composites Department, Korea Institute of Materials Science (KIMS))
Park, Ka Hyun (Functional Composites Department, Korea Institute of Materials Science (KIMS))
Kim, Won-jung (Functional Composites Department, Korea Institute of Materials Science (KIMS))
Lee, Sang-Kwan (Functional Composites Department, Korea Institute of Materials Science (KIMS))
Lee, Sang Bok (Functional Composites Department, Korea Institute of Materials Science (KIMS))
Publication Information
Composites Research / v.28, no.6, 2015 , pp. 333-339 More about this Journal
Abstract
Electromagnetic interference shielding composite with low density ($1.18g/cm^3$) was fabricated using electroless plated FeCo magnetic metal hollow fibers and ethylene propylene diene monomer (EPDM) polymer. Aspect ratio of the fibers were controlled and their hollow structure was obtained by heat treatment process. The FeCo hollow fibers were then mixed with EPDM to manufacture the composite. The higher aspect ratio of the magnetic metal hollow fibers resulted in high electromagnetic interference shielding effectiveness (30 dB) of the composite due to its low sheet resistance (30 ohm/sq). The enhanced electromagnetic interference shielding effectiveness was mainly attributed to the formation of conducting network over the percolation threshold by high aspect ratio of fibers as well as an increase of the reflection loss by impedance mismatch owing to low sheet resistance, absorption loss, and multiple internal reflections loss.
Keywords
Electromagnetic interference shielding composite; Electroless plating; Magnetic metal hollow fiber; Sheet resistance; Electromagnetic interference shielding effectiveness;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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