화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Korean Chemical Engineering Research, Vol.54, No.2, 145-151, April, 2016
DOI10.9713/kcer.2016.54.2.145  Export Citation
판상형 Glass-flake를 이용한 내캐비테이션 도료 개발 및 성능평가
Development and Performance Evaluation of Anti-cavitation Paint with a Lamella Glass-flake
박혜영†, 김성길1, 김상석1, 최이찬2, 김병우2, 김승진3
  • 성균관대학교 화학공학과 바이오나노융합재료연구센터, 16419 경기도 수원시 장안구 서부로 2066
  • 1(주)비앤비 기술연구소, 11168 경기도 포천시 가산면 가산로 96번길 56
  • 2성균관대학교 화학공학과, 16419 경기도 수원시 장안구 서부로 2066
  • 3한국건설생활환경연구원, 06711 서울특별시 서초구 남부순환로 319길 7
Hyeyoung Park†, Sung-gil Kim1, Sang-suk Kim1, I-chan Choi, Byungwoo Kim, and Seung-jin Kim2
  • Dept. of Chemical Eng., Sungkyunkwan University, 2066, Seobu-ro, Jangan-gu, Suwon, Gyeonggi, 16419, Korea
  • 1BNB Technology Reserch Center, 56, Gasan-ro 96beon-gil, Gasan-myeon, Pocheon, Gyeonggi, 11168, Korea
  • 2Korea Conformity Laboratories, 7, Nambusunhwan-ro 319-gil, Seocho-gu, Seoul, 06711, Korea
E-mail:
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 20~30 μm 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 4.8~6N/mm2 이상, 파단연신률 30%이상, 마식속도 10 mm2/h이하, 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 20~30 μm, 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 4.8~6 N/mm2 or more, rupture elongation 30% or higher, abrasive speed 10 mm2/h or less. In particular, it showed more than twice the superior performance compared to existing advanced foreign products in anti-cavitation performance evaluation.
Keywords:Paint;Cavitation;Glass-flake;Lamella shaped;NBR
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