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COLOR STEEL MATERIAL HAVING EXCELLENT PREVENTING EFFECT AGAINST DEPOSITION OF MARINE ORGANISM
COLOR STEEL MATERIAL HAVING EXCELLENT PREVENTING EFFECT AGAINST DEPOSITION OF MARINE ORGANISM
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机译:具有出色的防止海洋生物沉积作用的彩色钢材料
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摘要
PROBLEM TO BE SOLVED: To prevent deposition and growth of marine organisms and to maintain good appearance and scenery for a long time by forming a color plastic film having a specified thickness and containing one or more kinds of zinc, zinc oxide and zinc compds. in a specified total volume ratio on the surface of a steel material. ;SOLUTION: A color plastic coating film 2 is formed on the surface of a steel piling sheet 1 having a component compsn. usually used. The color plastic coating film 2 contains one or more kinds of zinc, zinc oxide and zinc compds. which prevent deposition of marine organism such as shellfish and algae by 2 to 40 vol.% in total. If the volume ratio is 2%, the contamination prevention effect is not enough, and if it exceeds 40%, the adhesion strength with the steel poling sheet 1 degrades. The thickness of the color plastic coating film 2 is controlled to 2 to 4 mm in order to satisfy the long-term durability required for the steel poling sheet 1. The lower limit of 2 mm is determined so as to prevent damages of the film by soil and sand or drift wood, and the upper limit of 4 mm is determined from economical viewpoints.;COPYRIGHT: (C)1999,JPO
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