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

The Korean Hydrogen and New Energy Society (한국수소및신에너지학회)
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A Study on the Changes in Mechanical Properties by the Hydration of Polymer Electrolyte Membrane

고분자전해질막의 수화에 의한 기계적 특성의 변화 연구

  • EO, JUNWOO (Graduate School of Mechanical Engineering, Kumoh National Institute of Technology) ;
  • JUNG, YOUNGGUAN (Department of Mechanical Engineering, Kumoh National Institute of Technology) ;
  • SEO, YOUNGJIN (Department of Mechanical Engineering, Kumoh National Institute of Technology) ;
  • LEE, DONGBAE (Department of Industrial Installation, Jinju Campus of Korea Polytechnics) ;
  • HWANG, CHULMIN (Natural Energy Lab. Co.,Ltd) ;
  • KIM, SEUNGHWAN (Graduate School of Mechanical Engineering, Kumoh National Institute of Technology)
  • 어준우 (금오공과대학교 대학원 기계공학과) ;
  • 정영관 (금오공과대학교 기계공학과) ;
  • 서영진 (금오공과대학교 기계공학과) ;
  • 이동배 (한국폴리텍대학진주캠퍼스 산업설비과) ;
  • 황철민 ((주)자연에너지연구소) ;
  • 김승환 (금오공과대학교 대학원 기계공학과)
  • Received : 2022.05.23
  • Accepted : 2022.06.13
  • Published : 2022.06.30
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Abstract

In this study, as one part of the studies on the mechanical properties of the polymer electrolyte membrane, a study was conducted on the change in the mechanical properties due to hydration before and after aging of the polymer electrolyte membrane. The mechanical properties of the polymer electrolyte membrane changes due to hydration were confirmed through tensile tests of hydrated and non-hydrated Nafion 117. As results of this study, non-hydrated membrane showed higher mechanical properties than hydrated thing in the elastic region and some plastic regions. But, it was confirmed that hydrated membrane exhibited higher mechanical properties than non-hydrated thing in the large plastic region. Hydrated membrane has a lower glass transition temperature than non-hydrated thing due to the role of water as a plasticizer. In addition, the number of ion aggregates decreases, but the size increases, and the hydrated Nafion 117 is thought to have different mechanical properties from that of the non-hydrated thing due to the characteristic that the internal attraction is strengthened.

Keywords

References

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