Surface-Treated Aluminum Material Having Excellent Resin Adhesion, Method For Manufacturing Same, And Surface-Treated Aluminum Material/Resin Joined Body
A surface treatment and adhesion technology, applied in the field of the surface-treated aluminum material/resin joint, can solve the problem that the resin adhesion is not necessarily improved, and the resin adhesion cannot be exerted, and achieves the effect of excellent adhesion
Active Publication Date: 2018-02-16
FURUKAWA SKY ALUMINUM CORP
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Problems solved by technology
[0005] However, in recent years, it has been found that even if the technology of Patent Document 1 is used and the treatment is performed under the same electrolytic conditions, the resin adhesiveness may not necessarily be improved depending on the configuration of the manufacturing equipment.
Specifically, it has been found that when the electrolytic treatment is performed on a wide aluminum material such as an aluminum plate wound into a coil shape or a long extruded aluminum profile, so-called continuous processing is performed, that is, in order to improve productivity, the electrolytic treatment is performed on the aluminum material When the current is always applied to the counter electrode and the aluminum material is continuously conveyed and supplied to the electrolytic tank, the resin adhesion may not be exhibited
Method used
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[0066] Hereinafter, preferred embodiments of the present invention will be specifically described based on examples.
[0067] Examples 1-24 of the present invention and comparative examples 1-12
[0068] As the aluminum material, a coil-shaped JIS5052-H34 alloy plate having a width of 200 mm×a plate thickness of 1.0 mm was used. The aluminum alloy plate was used for one of the electrodes, and a flat graphite plate having a width of 300 mm x a length of 10 mm x a plate thickness of 2.0 mm was used for the counter electrode. Such as figure 1 As shown, one side of the aluminum alloy plate 5 is made to face the counter electrode 6, and the porous aluminum oxide coating film layer on the surface side and the isolation type aluminum oxide coating film layer on the substrate side are formed on the opposite surface layer, The two electrodes are arranged in the electrolytic solution 4 added to the electrolytic cell 1 . The electrolytic solution 4 used an alkaline aqueous solution ma...
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Abstract
The present invention is: a surface-treated aluminum material having excellent resin adhesion, an oxide coating being formed on a surface thereof, the oxide coating comprising a porous aluminum oxidecoating layer having a thickness of 20-500 nm formed on a surface side thereof and a barrier-type aluminum oxide coating layer having a thickness of 3-30 nm formed on a substrate side thereof, pores having a diameter of 5-30 nm being formed in the porous aluminum oxide coating layer, and the length of cracks occurring at an interface of the porous aluminum oxide coating layer and the barrier-typealuminum oxide coating layer being 50% or less of an interface length; a method for manufacturing the surface-treated aluminum material; and a surface-treated aluminum material / resin joined body comprising the surface-treated aluminum material and a resin covering the surface on which the oxide coating is formed.
Description
technical field [0001] The present invention relates to a surface-treated aluminum material and a method for producing the same. Specifically, it relates to a surface-treated aluminum material having an aluminum oxide coating film on the surface and excellent resin adhesion, and a method for stably producing the same. The present invention relates to a bonded body of the surface-treated aluminum material / resin. Background technique [0002] Pure aluminum or aluminum alloy (hereinafter referred to as "aluminum") is lightweight and has moderate mechanical properties, and has excellent characteristics such as aesthetics, formability, and corrosion resistance, so it is widely used in various containers. , structural materials, mechanical parts, etc. These aluminum materials are sometimes used directly, and on the other hand, various surface treatments are often added to improve corrosion resistance, wear resistance, resin adhesion, hydrophilicity, water resistance, antibacteria...
Claims
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IPC IPC(8): C25D11/04C25D11/06C25D11/18
CPCC25D11/24C25D11/06C25D11/024B05D3/007B05D7/24C25D11/04C25D11/18
Inventor 长谷川真一三村达矢本川幸翁前园利树
Owner FURUKAWA SKY ALUMINUM CORP