Effects of Electrochemical Oxidation of Carbon Fibers on Mechanical Interfacial Properties of Carbon Fibers-reinforced Polarized-Polypropylene Matrix Composites

전기화학적 산화처리가 탄소섬유/극성화된 폴리프로필렌 복합재의 기계적 계면 특성에 미치는 영향

  • Kim, Hyun-Il (Korea Institute of Carbon Convergence Technology, R&D Division) ;
  • Choi, Woong-Ki (Korea Institute of Carbon Convergence Technology, R&D Division) ;
  • Oh, Sang-Yub (Korea Institute of Carbon Convergence Technology, R&D Division) ;
  • An, Kay-Hyeok (Korea Institute of Carbon Convergence Technology, R&D Division) ;
  • Kim, Byung-Joo (Korea Institute of Carbon Convergence Technology, R&D Division)
  • 김현일 (한국탄소융합기술원 연구개발본부) ;
  • 최웅기 (한국탄소융합기술원 연구개발본부) ;
  • 오상엽 (한국탄소융합기술원 연구개발본부) ;
  • 안계혁 (한국탄소융합기술원 연구개발본부) ;
  • 김병주 (한국탄소융합기술원 연구개발본부)
  • Published : 2013.10.31


In this work, the effects of electrochemical oxidation of carbon fiber surfaces on mechanical interfacial properties of carbon fibers-reinforced polarized-polypropylene matrix composites were studied with various current densities during the treatments. Surface properties of the fibers before and after treatments were observed by SEM, AFM, XPS, and contact angle measurements. Mechanical interfacial properties of the composites were measured in terms of critical stress intensity factor ($K_{IC}$). From the results it was found that $O_{1s}$ peaks of the fiber surfaces were strengthened after electrochemical oxidation which led to the enhancement of surface free energy of the fiber, resulting in good mechanical performance of the composites. It can be concluded that electrochemical oxidation of the carbon fiber surfaces can control the interfacial adhesion between the carbon fibers and polarized-polypropylene in this composites system.


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