COATING COMPOSITION FOR GALVANIZED SHEET IRON AND GALVANIZED SHEET IRON COATED WITH THE SAME

摘要

The present invention relates to a composition for coating a galvanized steel sheet and a galvanized steel sheet coated with the composition, and more particularly, to a composition for coating a galvanized steel sheet comprising duck down flour, carbon white and polyol, and to a galvanized steel sheet having enhanced water resistance and corrosion resistance. The coating composition of the present invention can be coated in the thickness 10,000 times or less than that of a conventional titanium-based coating agent, and not only is excellent in water resistance and corrosion resistance, but also does not transfer corrosion even if corrosion occurs in a part due to a honeycomb structure. In addition, the nano-sized coating does not affect functions even if the product is bent, and is a highly functional coating to give a color tone as it is, thereby being applied to marine and automotive waterproofing products.