Journal of Ocean Engineering and Technology (한국해양공학회지)

Korean Society of Ocean Engineers (한국해양공학회)
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Measurement of Water Absorption in Anticorrosive Organic Coatings Using Quartz Crystal Microbalance (QCM)

수정진동자 미세저울을 이용한 방식도막의 물 흡수 측정

  • 이근대 (부경대학교 응용화학공학부) ;
  • 도윤정 (부경대학교 응용화학공학부) ;
  • 김진호 (부경대학교 응용화학공학부) ;
  • 박성수 (부경대학교 응용화학공학부) ;
  • 홍성수 (부경대학교 응용화학공학부) ;
  • 서차수 (부경대학교 응용화학공학부) ;
  • 박진환 (부경대학교 응용화학공학부)
  • Published : 2003.12.01
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Abstract

The absorption of water into an anti-corrosive organic coating, such as alkyd and urethane resin coating, was investigated, using a quartz crystal microbalance (QCM). Anticorrosive properties of the coatings were also measured, by means of electrochemical impedance spectroscopy (EIS). The overall absorption of water in the coating is determined by the chemical nature of resin, and decreases with increasing thickness. The enhancement of anti-corrosive performance, through increase of coating thickness, was more remarkable in the case of the coating that hadlower equilibrium water absorption. The absorption kinetics curves were Fickian in nature. The EIS analysis confirmed that the resin, having lower equilibrium water absorption, shows higher anti-corrosive performan.

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