Composition and method for surface treatment of metal materials

A metal material and surface treatment technology, applied in the direction of metal material coating process, etc., can solve the problem that the blackening resistance is not enough, and achieve the effect of high practical value and excellent fingerprint resistance

Active Publication Date: 2005-05-11
NIHON PARKERIZING
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Problems solved by technology

[0012] In the case of using these metal surface treatment compositions, the corrosion resistance can generally be greatly improved, but not enough can be said about the blackening resistance

Method used

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  • Composition and method for surface treatment of metal materials
  • Composition and method for surface treatment of metal materials

Examples

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Embodiment

[0064] The present invention will be specifically described below with examples and comparative examples, but the scope of the present invention is not limited to these examples. The metal materials used in the following examples and comparative examples, the cleaning method of the surface thereof, and the surface treatment composition of the present invention are described below.

[0065] 1. Test plate

[0066] ·Cold-rolled steel plate (SPC)

[0067] Commercial product, plate thickness 0.6mm JIS G 314

[0068] · Zinc-coated steel sheet

[0069] (A) Marketed products, plate thickness 0.6mm double-sided galvanized steel sheet (EG) coating weight 20g / m 2

[0070] (B) Marketed products, plate thickness 0.6mm hot-dip galvanized steel sheet (GI) coating weight 40g / m 2

[0071] ・Aluminum plate (AL): commercially available, plate thickness 0.8mm JIS A 5052

[0072] 2. Purification method of the test plate

[0073] Use an aqueous solution (drug concentration: 20g / L) of an alka...

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Abstract

The present invention provides a surface treatment composition and a surface treatment method capable of forming a film having excellent corrosion resistance, fingerprint resistance, blackening resistance, paint adhesion, etc. on the surface of a metal material. It contains an aqueous medium and the following components: (A) metal ions selected from Mn ions, Co ions, Zn ions, Mg ions, Ni ions, Ti ions, V ions and Zr ions, (B) having at least 4 fluorine atoms and elements selected from Ti, Zr, Si, Hf, Al and B, (C) has active hydrogen-containing amino, epoxy, vinyl, mercapto and methacryloxy Silane coupling agent with selected reactive functional groups, and (D) aqueous emulsification using resin selected from cationic or nonionic polyurethane resin, acrylic resin, epoxy resin, polyester resin and polyamide resin as the resin component Resin composition for surface treatment of metal materials and method for surface treatment of metal materials using the same.

Description

technical field [0001] The present invention relates to a surface treatment composition and a surface treatment method capable of imparting high corrosion resistance to the surface of a metal material and forming a film having excellent fingerprint resistance, blackening resistance, paint adhesion, and the like. Background technique [0002] Metal materials such as metal-coated steel sheets and aluminum sheets containing zinc are widely used in the fields of automobiles, construction materials, and home appliances. However, zinc and aluminum used in these metal materials are corroded in the atmosphere to form a corrosion product called white rust, which degrades the appearance quality of the metal material and also deteriorates paint adhesion. [0003] In order to improve corrosion resistance and paint adhesion, chromate treatment is generally performed on the surface of metal materials by using a treatment solution containing chromic acid, dichromic acid or its salts as the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C22/34
Inventor 中村充河上克之和田泰幸
Owner NIHON PARKERIZING
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