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http://dx.doi.org/10.14773/cst.2013.12.1.027

Improvement of anti-corrosive property for alloy plated steel sheet by UV curable organic-inorganic hybrid coatings  

Park, Jongwon (Ulsan Industrial Technology Research Center, Research Institute of Industrial Science & Technology)
Lee, Kyunghwang (Ulsan Industrial Technology Research Center, Research Institute of Industrial Science & Technology)
Na, Hyunju (Ulsan Industrial Technology Research Center, Research Institute of Industrial Science & Technology)
Park, Byungkyu (Surface Treatement Department, AK ChemTech Co., Ltd.)
Nam, Yeungsub (Surface Treatement Department, AK ChemTech Co., Ltd.)
Hong, Shinhyub (Surface Treatement Department, AK ChemTech Co., Ltd.)
Publication Information
Corrosion Science and Technology / v.12, no.1, 2013 , pp. 27-33 More about this Journal
Abstract
According to its merits about high curing speed and low emission of volatile organic compounds, UV curable inorganic-organic coating technology has been developed as an alternative for toxic and carcinogenic chromate-based treatments for years. It is consistently observed that ultra-thin films offer excellent corrosion protection as well as paint adhesion to metals. Based on the tetra-ethylorthosilicate(TEOS) and methacryloxypropyl trimethoxysilane(MPTMS), inorganic sol was synthesized and formed hybrid networks with UV curable acrylic monomer, 6-hexanediol diacrylate(HDDA), trimethylolpropane triacrylate(TMPTA), pentaerylthritol triacrylate(PETA). Several methods were used to test their properties such as salt spray test, potentiodynamic measurement, tape peel test, etc. It was shown that anti-corrosive property and stability of storage were affected by the molecular ratios of inorganic and organic compounds. It was not only the stability of storage, but had a excellent anti-corrosive, paint adhesive, and anti-solvent properties in a final molar ratios of 0.6/0.04/0.86/0.005 (TEOS/MPTMS/Acetone/HNO3) and 0.08/0.106/0.081/0.02 (TMPTA/HDDA/PETA/photo initiator).
Keywords
UV curable; hybrid coating; anti-corrosive; temporary corrosion protection; alloy plating coated steel;
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