Electrodeposition onto the Surface of Carbon Fiber and Its Application to Composites (II) - CFRC with MVEMA and EMA Interphase -

탄소섬유 표면에의 고분자 전착과 복합재료 물성 (II) - MVEMA 및 EMA 계면상을 갖는 탄소섬유 복합재료 -

  • Kim, Minyoung (Department of Chemical Engineering, Pusan National University) ;
  • Kim, Jihong (Department of Chemical Engineering, Pusan National University) ;
  • Bae, Jongwoo (Department of Chemical Engineering, Pusan National University) ;
  • Kim, Wonho (Department of Chemical Engineering, Pusan National University) ;
  • Hwang, Byungsun (Korea Institute of Machinery and Materials, Composite Material Group) ;
  • Choi, Youngsun (Hankook Fiber Co, Composites Research Center)
  • 김민영 (부산대학교 공과대학 화학공학과) ;
  • 김지홍 (부산대학교 공과대학 화학공학과) ;
  • 배종우 (부산대학교 공과대학 화학공학과) ;
  • 김원호 (부산대학교 공과대학 화학공학과) ;
  • 황병선 (한국기계연구원 복합재료그룹) ;
  • 최영선 ((주)한국화이바 복합재료연구소)
  • Received : 1998.05.18
  • Accepted : 1999.04.10
  • Published : 1999.05.10

Abstract

Various surface treatment techniques can be applied onto the surface of carbon fibers to increase interlaminar shear strength (ILSS). In a commerciaI treatment, first, surface of carbon fiber was oxidized, after that, a sizing agent was coated to improve handleability and adhesion to the matrix. Carbon fiber reinforced composites (CFRC) which is made of these fibers show excellent ILSS but show low vaIues of impact strength In this study, reactive and ductile interphase was introduced between fiber and matrix to increase both the ILSS and impact strength. By using electric conductivity of carbon fibers, flexible polymers which have ionizable group, i.e., MVEMA and EMA, were coated onto the surface (oxidized) of carbon fiber by the technique of electrodeposition. ILSS and impact strength of composites were evaluated according to the surface treatments, i.e., commercial sizing treatment, interphase introduction, and without sizing treatment. Izod impact strength and ILSS of CFRC were simultaneously improved in thc thickness range of $0.08{\sim}0.12{\mu}m$ of MVEMA interphase. Water resistance of the composites was decreased by introducing MVEMA interphase.

Keywords

Carbon Fibers;Electrodeposition;Composites;Polymeric Interphase

Acknowledgement

Supported by : 한국학술진흥재단

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