Compound composition and process for surface treating of metal material

A surface treatment and metal material technology, applied in the direction of metal material coating technology, etc., can solve the problems of bad influence of paint adhesion, reduce the appearance of metal materials, insufficient blackening resistance, etc., and achieve excellent paint adhesion and practical value High, excellent corrosion resistance effect

Active Publication Date: 2006-08-09
NIHON PARKERIZING
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  • Abstract
  • Description
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Problems solved by technology

However, zinc and aluminum used in these metal materials have disadvantages in that they corrode in the atmosphere and produce a corrosion product called white rust, which degrades the appearance of the metal material and adversely affects paint adhesion
[0012] Corrosion resistance is generally greatly improved when using these metal surface treatment compositions, but blackening resistance is not enough

Method used

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  • Compound composition and process for surface treating of metal material
  • Compound composition and process for surface treating of metal material
  • Compound composition and process for surface treating of metal material

Examples

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Embodiment

[0077] Next, although an Example and a comparative example are given and this invention is demonstrated concretely, the scope of this invention is not limited by these Examples. Metal materials used in the following examples and comparative examples, methods for cleaning their surfaces, and the surface treatment composition of the present invention are described below.

[0078] 1. Sample material

[0079] ·Cold-rolled steel plate (SPC)

[0080] Commercially available, plate thickness 0.6mm JIS G314

[0081] · Zinc-containing metal plated steel sheet

[0082] (A) Commercially available product, plate thickness 0.6mm, double-sided electrogalvanized steel plate (EG), adhesion amount 20g / m 2

[0083] (B) Commercially available product, plate thickness 0.6mm, hot-dip galvanized steel sheet (GI), adhesion amount 40g / m 2

[0084] ・Aluminum plate (AL): commercially available, plate thickness 0.8 mm, JIS A5052

[0085] 2. Cleaning method of sample plate

[0086] Use the aqueous...

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Abstract

To provide a composition for surface treatment of a non-chromium metallic material capable of depositing a film having excellent corrosion resistance, black discoloration resistance and coating adhesivity on the surface of the metallic material, and to provide a surface treatment method using the composition. In the composition for surface treatment of the metallic material, (A) at least one kind of phosphoric compound to be selected from a group consisting of phosphoric acid, condensed phosphoric acid, organic phosphonic acid, and ammonium salt thereof, (B) fluoro acid having at least one element selected from a group consisting of at least four fluorine atoms, titanium, zirconium, silicon, hafnium, aluminum and boron, and (C) silane coupling agent (C1) having at least one active hydrogen containing amino radical, and silane coupling agent (C2) having at least one epoxy radical are dissolved in aqueous medium or blended in a dispersive state, and the ratio of the solid of the component (A) to the total solids of the components (A)-(C) is 0.1-80 mass%. The composition is used for the surface treatment method of the metallic material.

Description

technical field [0001] The present invention relates to a surface treatment composition and a treatment method. The surface treatment composition can impart high corrosion resistance to the surface of a metal material and can form a coating film excellent in blackening resistance and paint adhesion. Background technique [0002] Zinc-containing metal plated steel sheets, aluminum sheets, and other metal materials are used in many fields related to automobiles, building materials, and home appliances. However, zinc and aluminum used in these metal materials have disadvantages in that they corrode in the atmosphere and produce a corrosion product called white rust, which degrades the appearance of the metal material and adversely affects paint adhesion. [0003] Therefore, in order to improve corrosion resistance and paint adhesion, the surface of the metal material is usually treated with chromate using a treatment solution containing chromic acid, dichromic acid or its salts...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C22/07C23C22/23C23C22/34
CPCC23C2222/20
Inventor 袁江南中村充
Owner NIHON PARKERIZING
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