Journal of Powder Materials (한국분말재료학회지)

The Korean Powder Metallurgy & Materials Institute (한국분말재료학회 (*구 분말야금학회))
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Effects of Morphologies of Carbon Nanomaterials on Conductivity of Composites Containing Copper/Carbon Nanomaterial Hybrid Fillers

탄소 나노 물질의 형상에 따른 구리/탄소나노물질 하이브리드 필러의 전도성 향상 거동 분석

  • Lee, Yeonjoo (Dept. of Advanced Materials Engineering, Kookmin University) ;
  • Hong, Sung-uk (Incheon Regional Division, Korea Institute of Industrial Technology) ;
  • Choi, Hyunjoo (Dept. of Advanced Materials Engineering, Kookmin University)
  • 이연주 (국민대학교 신소재공학부) ;
  • 홍성욱 (한국생산기술연구원 뿌리산업기술연구소 주조공정그룹) ;
  • 최현주 (국민대학교 신소재공학부)
  • Received : 2018.10.16
  • Accepted : 2018.10.21
  • Published : 2018.10.28
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Abstract

In the present study, we develop a conductive copper/carbon nanomaterial additive and investigate the effects of the morphologies of the carbon nanomaterials on the conductivities of composites containing the additive. The conductive additive is prepared by mechanically milling copper powder with carbon nanomaterials, namely, multi-walled carbon nanotubes (MWCNTs) and/or few-layer graphene (FLG). During the milling process, the carbon nanomaterials are partially embedded in the surfaces of the copper powder, such that electrically conductive pathways are formed when the powder is used in an epoxy-based composite. The conductivities of the composites increase with the volume of the carbon nanomaterial. For a constant volume of carbon nanomaterial, the FLG is observed to provide more conducting pathways than the MWCNTs, although the optimum conductivity is obtained when a mixture of FLG and MWCNTs is used.

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