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Chromate-free coated metal plate

A metal plate and coating technology, which is applied to metal layered products, metal material coating processes, devices for coating liquids on surfaces, etc., can solve problems such as insufficient damage resistance, and achieve low price and damage resistance. excellent effect

Active Publication Date: 2014-12-17
NIPPON STEEL CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The clear coat film used here has a film thickness of 10 μm or less, is relatively thin, and is chrome-free, but since solvent-based paint is used for the paint used to form the clear coat film, dedicated coating equipment is required
In addition, although the decoration and workability are excellent, there is still a problem of insufficient damage resistance

Method used

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  • Chromate-free coated metal plate
  • Chromate-free coated metal plate
  • Chromate-free coated metal plate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0150] Embodiments of the present invention will be described below. However, the present invention is not limited by these Examples.

[0151] (1) metal plate

[0152] Table 1 shows the types of metal plates used. A mild steel plate with a plate thickness of 0.5 mm was used as the base material of the plated metal plate. The SUS plate uses a ferritic stainless steel plate (steel composition: C: 0.008 mass%, Si: 0.07 mass%, Mn: 0.15 mass%, P: 0.011 mass%, S: 0.009 mass%, Al: 0.067 mass%, Cr : 17.3% by mass, Mo: 1.51% by mass, N: 0.0051% by mass, Ti: 0.22% by mass, the balance being Fe and unavoidable impurities). The surface of the metal plate is degreased with alkali, washed with water and dried before use.

[0153] Table 1

[0154]

[0155] (2) base treatment layer

[0156] The coating agent used to form the surface treatment layer was blended with an organic resin (Table 2), a silane coupling agent (Table 3), and a polyphenol compound (Table 4) in the amount shown ...

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Abstract

This chromate-free coated metal plate has a coating film (a) containing an organic resin (A), silica particles (C), and polyolefin resin particles (D) on at least one surface of a metal plate. When considering the average particle size of the polyolefin resin particles (D) to be a µm and the thickness of the coating film (a) to be b µm, the relationships 0.5 = a = 3, 2 = b = 10, and 0.1 = a / b = 0.8 are satisfied, and the silica particles (C) include both spherical silica particles (C1) having an average particle size of 5-50 nm and spherical silica particles (C2) having an average particle size of 0.3-5 µm. The result is a low-cost, aesthetic, chromate-free coated metal plate having highly superior workability, corrosion resistance, damage resistance, and the like without including hexavalent chromium, which has a high environmental impact,

Description

technical field [0001] The present invention relates to a low-cost decorative non-metallic metal sheet having excellent workability, corrosion resistance, scratch resistance, etc., in which a coating film (α) free of hexavalent chromium having a high environmental load is formed on at least one side of a metal plate. Chrome painted sheet metal. Background technique [0002] In home appliances, building materials, automobiles, etc., instead of conventional post-coating products that are painted after molding, pre-coated metal sheets covered with colored organic films and directly expressing Transparent pre-coated metal sheets with a metallic feel to the metal surface, etc. These decorative metal sheets have the following characteristics: the antirust-treated steel sheet or plated steel sheet is covered with a colored organic film, or a metal sheet with a metallic luster is provided with a clear coating film, so it has a beautiful appearance and has a Good processability and...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B15/08B05D7/14C09D7/12C09D123/00C09D161/28C09D167/00C09D175/00C09D201/00C23C26/00C09D7/48C09D7/61C09D7/65
CPCC08K3/36C09D7/125C08G2150/90C09D167/02C09D175/04C09D5/084C08L2205/03C09D7/1216C09D7/1283C09D7/1266C09D5/02C09D7/61C09D7/65C09D7/67C09D7/69C09D7/48C08L23/10C08L75/04B05D7/14B32B15/08C23C26/00
Inventor 森下敦司林公隆布田雅裕和田裕介佐藤梨惠奥村豪治
Owner NIPPON STEEL CORP
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