Electromagnetic Interference Shielding Behaviors of Electroless Nickel-loaded Carbon Fibers-reinforced Epoxy Matrix Composites

무전해 니켈도금된 탄소섬유강화 에폭시기지 복합재료의 전자파 차폐특성

  • Hong, Myung-Sun (Carbon Valley R&D Division, Jeonju Institute of Machinery and Carbon Composites) ;
  • Bae, Kyong-Min (Department of Chemistry, Inha University) ;
  • Lee, Hae-Seong (Department of Nano Advanced Materials Engineering, Jeonju University) ;
  • Park, Soo-Jin (Department of Chemistry, Inha University) ;
  • An, Kay-Hyeok (Carbon Valley R&D Division, Jeonju Institute of Machinery and Carbon Composites) ;
  • Kang, Shin-Jae (Carbon Valley R&D Division, Jeonju Institute of Machinery and Carbon Composites) ;
  • Kim, Byung-Joo (Carbon Valley R&D Division, Jeonju Institute of Machinery and Carbon Composites)
  • 홍명선 (전주기계탄소기술원 탄소밸리사업단) ;
  • 배경민 (인하대학교 화학과) ;
  • 이해성 (전주대학교 나노신소재과) ;
  • 박수진 (인하대학교 화학과) ;
  • 안계혁 (전주기계탄소기술원 탄소밸리사업단) ;
  • 강신재 (전주기계탄소기술원 탄소밸리사업단) ;
  • 김병주 (전주기계탄소기술원 탄소밸리사업단)
  • Received : 2011.08.29
  • Accepted : 2011.10.13
  • Published : 2011.12.10

Abstract

In this work, carbon fibers were electrolessly Ni-plated in order to investigate the effect of metal plating on the electromagnetic shielding effectiveness (EMI-SE) of Ni-coated carbon fibers-reinforced epoxy matrix composites. The surfaces of carbon fibers were characterized by scanning electron microscopy (SEM) and X-ray photoelectron spectroscopy (XPS). Electric resistance of the composites was tested using a 4-point-probe electric resistivity tester. The EMI-SE of the composites was evaluated by means of the reflection and adsorption methods. From the results, it was found that the EMI-SE of the composites enhanced with increasing Ni plating time and content. In high frequency region, the EMI-SE didn't show further increasing with high Ni content (Ni-CF 10 min) compared to the Ni-CF 5 min sample. In conclusion, Ni content on the carbon fibers can be a key factor to determine the EMI-SE of the composites, but there can be an optimized metal content at a specific electromagnetic frequency region in this system.

Keywords

carbon fibers;EMI;carbon fiber reinforced plastics

Acknowledgement

Supported by : 지식경제부

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