한국수소및신에너지학회논문집 (Transactions of the Korean hydrogen and new energy society)

  • 제20권5호
  • /
  • Pages.424-431
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  • 2009
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  • 1738-7264(pISSN)
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  • 2288-7407(eISSN)
한국수소및신에너지학회 (The Korean Hydrogen and New Energy Society)
권호 표지

PTFE 입자 크기 변화와 Carbon Paper 발수 코팅 특성 변화

Characteristics of Coated Carbon Paper with PTFE Emulsion Have Different Particle Size

  • 전현 (단국대학교 응용화학공학과) ;
  • 송기세 (동국대학교 화공생물공학과) ;
  • 정문국 (단국대학교 응용화학공학과) ;
  • 이혜민 (단국대학교 응용화학공학과) ;
  • 조태환 (단국대학교 응용화학공학과) ;
  • 최원경 (단국대학교 공학대학)
  • Jeon, Hyeon (Applied chemistry engineering, Dpt. School of Engineering, Dankook Univ.) ;
  • Song, Ki-Se (Grad. School of Chemical & Biochemical Engineering, Dongguk Univ.) ;
  • Jeong, Moon-Gook (Applied chemistry engineering, Dpt. School of Engineering, Dankook Univ.) ;
  • Lee, Hye-Min (Applied chemistry engineering, Dpt. School of Engineering, Dankook Univ.) ;
  • Cho, Tae-Hwan (Applied chemistry engineering, Dpt. School of Engineering, Dankook Univ.) ;
  • Choi, Weon-Kyung (Grad. School of Applied Chemistry Engineering, Dankook Univ.)
  • 발행 : 2009.10.31
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초록

Treatment for water repellency on the carbon supports of GDL which composed a part of MEA has been suggested as a solution to prevent flooding. PTFE is a fluoropolymer that has hydrophobic property and a PTFE emulsion was selected as waterproof agent in this investigation. Carbon paper was coated by PTFE emulsion with different particle size of 5~500 nm and 3~$5\;{\mu}m$ as various concentration. PTFE coated carbon paper has difference in weight variation changed proportionally at PTFE concentration and coating times. Then gas permeability of the coated carbon paper with emulsion of 3~$5\;{\mu}m$ PTFE was changed vastly. Characteristics of carbon paper coated with different PTFE emulsion were analyzed by FE-SEM, FT-IR spcetroscopy and were evaluated by weight variations, gas permeability and water contact angle.

키워드

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