Electrodeposition onto the Surface of Carbon Fiber and its Application to Composites(I) - Electrodeposition of MVEMA and EMA

탄소섬유 표면에의 고분자 전착과 복합재료 물성(I) - MVEMA와 EMA의 전착 -

  • Kim, Minyoung (Department of Chemical Engineering, Pusan National University,) ;
  • Kim, Jihong (Department of Chemical Engineering, Pusan National University,) ;
  • Kim, Wonho (Department of Chemical Engineering, Pusan National University,) ;
  • Kim, Booung (Department of Chemical Engineering, Pusan National University,) ;
  • Hwang, Byungsun (Korea Institute of Machinery and Materials) ;
  • Choi, Youngsun (Hankook Fiber Glass Co., Ltd.)
  • 김민영 (부산대학교 공과대학 화학공학과) ;
  • 김지홍 (부산대학교 공과대학 화학공학과) ;
  • 김원호 (부산대학교 공과대학 화학공학과) ;
  • 김부웅 (부산대학교 공과대학 화학공학과) ;
  • 황병선 (한국기계연구원 복합재료연구실) ;
  • 최영선 ((주)한국화이바 복합재료연구소)
  • Received : 1998.05.18
  • Accepted : 1998.07.31
  • Published : 1998.11.10

Abstract

An interphase between carbon fiber and epoxy matrix was introduced to increase impact strength of carbon fiber reinforced composites (CFRC) without sacrificing the interlaminar shear strength. Flexible polymers, I. e., MVEMA (poly(methyl vinyl ether-co-maleic anhydride)) and EMA(poly(ethylene-co-maleic anhydride)), which have reactive functional groups were considered as interphase materials. Weight hain of MVEMA and EMA onto the surface of carbon fibers was evaluated by changing the parameters of electrodeposition process. Electrodeposition mechanism of polymers which have anhydride functional group was identified by IR spectroscopy, that is, the generation of $RCOO^-$ functional group by the attack of hydroxide anion in the basic solution was observed. The weight gain was increased by increasing concentration of polymers, current density, and electrodeposition time. However the excess generation of oxygen gas decreased the weight gain by removing the deposited polymers. Washing in the running water easily removed the deposited polymers which are on the fiber surface without bonding, as a results, only 0.5 wt% of deposited polymers are remained.

Acknowledgement

Supported by : 한국학술진흥재단

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