Surface-treated aluminum material, manufacturing method thereof, and bonded body of the surface-treated aluminum material/resin layer

A technology of surface treatment and manufacturing method, applied in the direction of surface reaction electrolytic coating, chemical instrument and method, coating, etc. Adhesion and adhesion, and the effect of increasing the area

Active Publication Date: 2021-05-11
FURUKAWA SKY ALUMINUM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] However, even when the technique of Patent Document 1 is used and the treatment is performed under the same electrolysis conditions, there are still cases where resin adhesion decreases after a long period of time.

Method used

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  • Surface-treated aluminum material, manufacturing method thereof, and bonded body of the surface-treated aluminum material/resin layer
  • Surface-treated aluminum material, manufacturing method thereof, and bonded body of the surface-treated aluminum material/resin layer
  • Surface-treated aluminum material, manufacturing method thereof, and bonded body of the surface-treated aluminum material/resin layer

Examples

Experimental program
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Embodiment 1～33 and comparative example 1～12

[0080]As the aluminum material, a flat plate of JIS5052-H34 alloy of 200 mm in length×400 mm in width×1.0 mm in thickness was used. This aluminum alloy plate was used as one electrode, and a graphite plate having a flat plate shape of 300 mm in length x 500 mm in width x 2.0 mm in thickness was used as a counter electrode. One surface of the aluminum alloy plate faces the counter electrode, and two electrodes are arranged on the surface of the facing surface so that the porous aluminum oxide coating layer on the surface side and the barrier aluminum oxide coating layer on the substrate side are formed. An alkaline aqueous solution containing sodium pyrophosphate as the main component is used as the electrolytic solution. The concentration of the alkali component of the electrolytic solution was set to 0.5 mol / liter, and the pH was adjusted with hydrochloric acid and aqueous sodium hydroxide solution (both concentrations were 0.1 mol / liter). Under the electrolytic conditions s...

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Abstract

An object of the present invention is to provide a surface-treated aluminum material excellent in long-term resin adhesion over the entire surface of the aluminum material, and to provide a stable manufacturing method for such a surface-treated aluminum material. The solution to the problem is to provide a surface-treated aluminum material and a manufacturing method thereof, the surface-treated aluminum material is characterized in that it contains an aluminum material and an oxide film formed on at least one surface thereof, and the above-mentioned oxide film is formed by A porous aluminum oxide film layer with a thickness of 20 to 500 nm on the surface side and a barrier aluminum oxide film layer with a thickness of 3 to 30 nm formed on the substrate side, the porous aluminum oxide film layer is formed with a diameter of 5 Small pores of ~30nm, the moisture contained in the above oxide film is 10μg / cm 2 the following.

Description

technical field [0001] The present invention relates to a surface-treated aluminum material, a method for producing the same, and a bonded body of the surface-treated aluminum material / resin layer. Specifically, it relates to an aluminum material that has excellent long-term adhesion and adhesion over the entire surface of the aluminum material. A surface-treated aluminum material, a stable manufacturing method of the surface-treated aluminum material, and a bonded body of the surface-treated aluminum material / resin layer excellent in adhesiveness and adhesion. Background technique [0002] Pure aluminum or aluminum alloy materials (hereinafter referred to as "aluminum materials") are lightweight, have moderate mechanical properties, and have excellent features such as aesthetics, formability, and corrosion resistance, so they are widely used in various containers Classes, structural materials, mechanical parts, etc. These aluminum materials can be used directly. On the oth...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25D11/04B32B15/08B32B15/20C25D11/18
CPCB32B15/08B32B15/20C25D11/04C25D11/18
Inventor 长谷川真一三村达矢小山高弘村冈佑树
Owner FURUKAWA SKY ALUMINUM CORP
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