Korean Chemical Engineering Research

  • 제54권2호
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  • Pages.145-151
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  • 2016
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  • 0304-128X(pISSN)
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  • 2233-9558(eISSN)
한국화학공학회 (The Korean Institute of Chemical Engineers)
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판상형 Glass-flake를 이용한 내캐비테이션 도료 개발 및 성능평가

Development and Performance Evaluation of Anti-cavitation Paint with a Lamella Glass-flake

  • 박혜영 (성균관대학교 화학공학과 바이오나노융합재료연구센터) ;
  • 김성길 ((주)비앤비 기술연구소) ;
  • 김상석 ((주)비앤비 기술연구소) ;
  • 최이찬 (성균관대학교 화학공학과) ;
  • 김병우 (성균관대학교 화학공학과) ;
  • 김승진 (한국건설생활환경연구원)
  • 투고 : 2015.05.26
  • 심사 : 2015.10.01
  • 발행 : 2016.04.01
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초록

유체의 흐름에 의한 부분적 진공현상인 캐비테이션이 재료 표면에 충격을 주어 철강류 표면이 마모되는 현상에 대응하기 위해 판상형 glass-flake를 적용한 내캐비테이션용 도료를 개발하였다. 특히, 가소성이 좋고 내수성이 뛰어난 특성의 NBR (Acrylonitrile-butadiene rubber) 변성 에폭시 수지에 판상형 glass-flake를 필러로 상용하여 유 무기 복합 세라믹 코팅도료를 개발하였다. 특히 glass-flake는 두께는 100~200 nm 정도로 박막형이며, 길이는 $20{\sim}30{\mu}m$ 정도의 판상으로 종횡비가 약 200~300배에 달해 마모 및 내식성에 우수한 성능을 나타낸다. 본 도료로 도막형성 후 접착강도, 인장강도, 연신률, 내캐비테이션 성능을 평가한 결과, 인장강도 $4.8{\sim}6N/mm^2$ 이상, 파단연신률 30%이상, 마식속도 $10mm^2/h$이하, 복합사이클 내식성시험에서 모두 우수한 성능을 보였다. 특히 내 캐비테이션 성능 평가에서 기존 선진 외국 제품대비 2배 이상의 우수한 성능을 나타내었다.

In response to the cavitation caused by the partial vacuum caused by the fluid flow, a paint was developed by dispersing the lamella-shaped glass-flake in resin for anti-cavitation. This composite paint was developed by using the inorganic filler (lamella shaped glass-flake) and the NBR (Acrylonitrile-butadiene rubber) which was modified epoxy resin. Especially, the glass-flake was a thin film with a thickness of about 100~200 nm and length of about $20{\sim}30{\mu}m$, the aspect ratio was about 200 to 300 times that of the plate-shaped. So the paint for anti-cavitation have shown excellent performance in corrosion resistance. The results of evaluating anti-cavitation performance was below, tensile strength $4.8{\sim}6N/mm^2$ or more, rupture elongation 30% or higher, abrasive speed $10mm^2/h$ or less. In particular, it showed more than twice the superior performance compared to existing advanced foreign products in anti-cavitation performance evaluation.

키워드

참고문헌

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피인용 문헌

  1. 3급 아민 함유 아크릴수지 도료 개발 및 물성 vol.55, pp.5, 2016, https://doi.org/10.9713/kcer.2017.55.5.579
  2. Evaluation of Anti-Cavitation Performance of Polyurethane Coatings in Seawater using Ultrasonic Vibratory Method vol.37, pp.5, 2016, https://doi.org/10.5781/jwj.2019.37.5.4