Journal of the Korean Crystal Growth and Crystal Technology (한국결정성장학회지)

The Korea Association of Crystal Growth (한국결정성장학회)
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Morphology control of glassy carbon coating layer to additive ethylene glycol and phenolic resin

페놀수지 및 에틸렌 글리콜을 첨가한 유리질 카본 코팅층의 물성 제어

  • Joo, Sang Hyun (Convergence Transport Materials Center, Korea Institute of Ceramic Engineering and Technology) ;
  • Joo, Young Jun (Convergence Transport Materials Center, Korea Institute of Ceramic Engineering and Technology) ;
  • Lee, Hyuk Jun (Convergence Transport Materials Center, Korea Institute of Ceramic Engineering and Technology) ;
  • Sim, Young Jin (Convergence Transport Materials Center, Korea Institute of Ceramic Engineering and Technology) ;
  • Park, Dong Jin (GTI) ;
  • Cho, Kwang Youn (Convergence Transport Materials Center, Korea Institute of Ceramic Engineering and Technology)
  • 주상현 (한국세라믹기술원 융복합수송소재센터) ;
  • 주영준 (한국세라믹기술원 융복합수송소재센터) ;
  • 이혁준 (한국세라믹기술원 융복합수송소재센터) ;
  • 심영진 (한국세라믹기술원 융복합수송소재센터) ;
  • 박동진 ((주)지티아이) ;
  • 조광연 (한국세라믹기술원 융복합수송소재센터)
  • Received : 2022.06.03
  • Accepted : 2022.06.15
  • Published : 2022.06.30
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Abstract

In this study, glassy carbon coating was performed on the graphite using a phenolic resin and a curing agent was mixed with ethylene glycol as an additive to form the uniform surface. The phenolic resin was dried and cured under the environments of hot air, then converted into a glassy carbon layer by pyrolysis at 500~1,500℃. FTIR, XRD, SEM analysis, and density/porosity/contact angle measurement were performed for characterization of glassy carbon. The pyrolysis temperature for high-quality glassy carbon was optimized to be about 1,000℃. As the content of the additive increased, the effect of reducing surface defects on the coated surface, reduction of porosity, increase of contact angle, and increase of density were investigated in this study. The method of forming a glassy carbon coating layer through an additive is expected to be applicable to graphite coating and other fields.

본 연구에서는 페놀수지를 사용하여 흑연표면에 유리질 카본 코팅을 진행하였다. 코팅액은 균일한 표면을 가지는 유리질 카본 코팅층 형성을 위해 페놀수지와 경화제, 희석제, 첨가제 등을 혼합하였다. 코팅된 페놀수지는 25~60℃에서 건조 100~200℃에서 경화 500~1,500℃에서 열처리하여 유리질 카본으로 전환하였다. 유리질 카본의 특성 분석을 위해 FTIR, XRD, SEM 분석, 밀도/기공율/접촉각 측정을 진행하였다. 유리질 카본 형성에 있어 최적 온도는 약 1,000℃로 확인되었다. 그리고 첨가제의 함량이 높아질수록 코팅 표면의 결함감소, 기공율 감소, 접촉각 증가, 밀도 증가 등의 효과를 보였다. 첨가제를 통한 유리질 카본 코팅층 형성 방법은 흑연 코팅 및 다른 분야에 적용이 가능할 것으로 기대된다.

Keywords

Acknowledgement

본 논문은 중소벤처기업부가 지원한 '중소기업기술혁신개발사업'으로 지원을 받아 수행된 연구 결과입니다[과제명: Vitreous Carbon 함침코팅 및 열처리 공정의 국산화/과제고유번호: S2848495].

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