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A kind of preparation method of aluminum alloy resin composite body and aluminum alloy resin composite body

An aluminum alloy and composite technology, applied in the direction of coating, surface reaction electrolytic coating, electrolytic coating, etc., can solve the problem of weak adhesion between aluminum alloy and resin, and achieve improved adhesion, no environmental pollution, and enhanced adhesion. Effect

Active Publication Date: 2016-04-13
BYD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The present invention aims to solve the technical problem of weak bonding between aluminum alloy and resin in the aluminum alloy resin composite prepared in the prior art

Method used

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  • A kind of preparation method of aluminum alloy resin composite body and aluminum alloy resin composite body
  • A kind of preparation method of aluminum alloy resin composite body and aluminum alloy resin composite body
  • A kind of preparation method of aluminum alloy resin composite body and aluminum alloy resin composite body

Examples

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preparation example Construction

[0019] The invention provides a method for preparing an aluminum alloy resin composite, comprising the following steps:

[0020] S1, anodizing the pretreated aluminum alloy substrate to obtain an aluminum alloy with an oxide film layer having nanopores on the surface; anodizing is an anodizing technique well known to those skilled in the art, and the present invention preferably includes The pretreated aluminum alloy is used as an anode and placed in 10wt%-30wt% sulfuric acid at a temperature of 10~30°C and electrolyzed at a voltage of 10~100V for 1-40min to obtain an aluminum alloy with an oxide film layer of 1~10μm on the surface. Anodic oxidation The equipment adopts known anodizing equipment, such as anodizing tank. Preferably, the thickness of the oxide film layer prepared by anodic oxidation is 1-5um, the pore diameter of the nano-micropores in the oxide film layer is 10-100nm, more preferably 20-80nm, and further 20-60nm, and the depth of the nano-micropores is 0.5 ~5μ...

Embodiment 1

[0039] This example prepares an aluminum alloy resin composite body;

[0040] 1. Pretreatment: Cut the commercially available 1mm thick 5052 aluminum alloy plate into 15mm*80mm rectangular pieces, put it into a polishing machine for grinding, and then wash it with absolute ethanol, and then dip the aluminum alloy substrate in 2wt% sodium hydroxide aqueous solution, after 2 minutes, take it out and rinse it with deionized water to obtain a pretreated aluminum alloy sheet;

[0041] 2. Surface treatment 1: Put the above aluminum alloy sheet as an anode into H 2 SO 4 In the anodizing tank, electrolyze at 15V, 20°C for 5min, and dry;

[0042] 3. Surface treatment 2: Prepare 500ml of 10wt% sodium carbonate (pH=12.2) in a beaker, soak the obtained aluminum alloy sheet in it at 20°C, take it out after 3min, put it in a beaker filled with water and soak for 1min, Cycle like this for 5 times, after the last soaking in water, dry the aluminum alloy sheet;

[0043] Use a metallographi...

Embodiment 2

[0048] The aluminum alloy resin composite was prepared by the same method as in Example 1, except that the annealing temperature was 75°C, and a polycarbonate (PC) resin composition containing 30wt% glass fiber was injection molded.

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Abstract

The invention provides a method for preparing an aluminum alloy resin composite and the prepared aluminum alloy resin composite. The steps of the preparation method include: S1, anodizing the pretreated aluminum alloy substrate to obtain a surface containing nano-micropores Aluminum alloy with an oxide film layer; S2, immerse the aluminum alloy with an oxide film layer having nanometer pores obtained in step S1 into an etching solution, and form corrosion holes on the outer layer of the oxide film layer to obtain a surface-treated aluminum alloy substrate material; S3, injecting a resin layer on the surface of the surface-treated aluminum alloy substrate containing corrosion holes; S4, annealing the aluminum alloy substrate injected with the resin layer to obtain an aluminum alloy resin composite. Not only can an aluminum oxide film layer with a unique double-layer three-dimensional hole structure be formed on the surface of the aluminum alloy to improve the bonding force between the resin and the aluminum alloy, but also the annealing after injection molding can make the resin change from a solid to a liquid state again in a high temperature environment. Penetrates into the pores of the nanometer level, thereby enhancing the bonding force between the resin and the metal.

Description

technical field [0001] The present invention relates to a preparation method of an aluminum alloy resin composite body and the prepared aluminum alloy resin composite body, more specifically, to an aluminum alloy resin formed by integrating an aluminum alloy with a stronger binding force and a thermoplastic resin Complexes and methods for their preparation. Background technique [0002] In the field of parts manufacturing of automobiles, household electrical appliances, industrial machines, etc., the integrated molding technology of metal and resin is required. At present, the industry uses adhesives to integrate metal and synthetic resin at room temperature or under heating. Although the above method can be used to prepare a composite body formed of metal and plastic, the bonding force between the metal and plastic of the composite obtained according to these methods is poor, and the adhesive has poor acid and alkali resistance, and the composite body cannot be subsequently...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25D11/04C25D11/24C22F1/04B29C45/14B29C45/78
Inventor 孙剑王国南耿鹏
Owner BYD CO LTD
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