Preparation method of aluminum alloy-resin composite and aluminum alloy-resin composite prepared by using same

A technology of aluminum alloy and composite body, applied in the direction of synthetic resin layered products, chemical instruments and methods, metal layered products, etc., can solve the problems of weak bonding force between aluminum alloy and resin, and achieve improved bonding force and small heat release , the effect of unique structure

Active Publication Date: 2013-09-11
BYD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] The present invention aims to solve the technical problem of weak bonding betw...

Method used

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  • Preparation method of aluminum alloy-resin composite and aluminum alloy-resin composite prepared by using same
  • Preparation method of aluminum alloy-resin composite and aluminum alloy-resin composite prepared by using same
  • Preparation method of aluminum alloy-resin composite and aluminum alloy-resin composite prepared by using same

Examples

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preparation example Construction

[0018] The invention provides a method for preparing an aluminum alloy resin composite, comprising the following steps:

[0019] S1, anodizing the pretreated aluminum alloy base material to obtain an aluminum alloy having an oxide film layer with nanopores on the surface; anodizing is an anodizing technique well known to those skilled in the art, and the present invention may include pretreatment The aluminum alloy is used as an anode and put in 10wt%-30wt% concentration H 2 SO 4 In the process, the temperature is 10-30°C and the voltage is 10V-100V for 1-40min to obtain an aluminum alloy with a 1-10um thick oxide film layer on the surface. The anodizing equipment adopts known anodizing equipment, such as anodizing tanks. Preferably, the thickness of the oxide film layer prepared by anodic oxidation is 1-10 um, more preferably 1-5 um, and the pore diameter of the nano-micropores in the oxide film layer is 10-100 nm, more preferably 20-80 nm, and even more preferably 20-60 nm ...

Embodiment 1

[0036] This example prepares an aluminum alloy resin composite body;

[0037] 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 40g / L sodium hydroxide aqueous solution, after 2min, take it out and rinse it with deionized water to obtain a pretreated aluminum alloy sheet;

[0038] 2. Surface treatment 1: Put the above aluminum alloy sheet as an anode into H 2 SO 4 In the anodizing tank, electrolyze at 20V for 10min at 20°C, and blow dry;

[0039] 3. Surface treatment 2: Prepare 75gNH in a beaker 3 - 27gNH 4 Cl aqueous solution 500ml (pH = 10.2), 20 ℃, soak the obtained aluminum alloy sheet in it, take it out after 5min, put it into a beaker filled with water and soak for 1min, and cycle like this 5 times, after the last water soaking, put Aluminum alloy sheet drying;

[0040]...

Embodiment 2

[0044] The aluminum alloy resin composite was prepared by the same method as in Example 1, except that the surface treatment 2 was to prepare 144gNH in a beaker. 3 -27gNH 4Cl aqueous solution 500ml (pH = 11.1), 20 ℃, soak the obtained aluminum alloy sheet in it, take it out after 5min, put it into a beaker filled with water and soak it for 1min, and cycle like this for 5 times, after the last water soaking, put The aluminum alloy sheet is blown dry, and the surface of the aluminum alloy sheet after electrolysis is measured by the same method as claimed in claim 1 to obtain a 5um thick aluminum oxide film layer, and the aluminum oxide film layer contains nano-micropores with a pore size of 40-60nm. It is measured that there are corrosion holes with a diameter of 300-1000nm on the surface of the soaked aluminum alloy sheet, the depth of the corrosion holes is 1um, and the depth of the nano-micropores is 4um. It can be observed that there are such as figure 1 The structure show...

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Abstract

The invention provides a preparation method of an aluminum alloy-resin composite and an aluminum alloy-resin composite prepared by using the same. The preparation method comprises the following steps: S1. anodizing a pretreated aluminum alloy substrate to obtain an aluminum alloy of which the surface contains a nanoporous oxide film layer; S2. contacting the aluminum alloy containing the nanoporous oxide film layer obtained in the step S1 with a corrosive substance to form corrosion pores on the outer surface layer of the oxide film layer, thereby obtaining the surface-treated aluminum alloy substrate, wherein the corrosive substance is selected from at least one of ammonia, hydrazines, hydrazine derivatives and water-soluble amine compounds; and S3. putting the surface-treated aluminum alloy substrate in a mold, injecting a resin composition into the mold to be combined with the surface-treated aluminum alloy substrate, and forming to obtain the aluminum alloy-resin composite. A unique double-layer stereoscopic porous structure can be formed on the surface of the aluminum alloy to enhance the binding force between the resin and the aluminum alloy; and the invention has the advantages of easier formation, basically no influence on the appearance of the aluminum alloy, wider application range and no environment pollution, and is more suitable for large-scale production.

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 The preparation method of the composite body and the prepared aluminum alloy resin composite body. 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 res...

Claims

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Application Information

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IPC IPC(8): B32B9/04B32B15/20B32B27/00C23F1/36C23F1/14
CPCB32B15/088B29C45/14311B29C45/14778B29K2705/02B32B15/08B32B15/085B32B27/286B32B2270/00B32B2509/00B32B2605/08C25D11/08C25D11/16C25D11/24C25D11/246Y10T428/249956
Inventor 孙剑吴彦琴郭强陈梁
Owner BYD CO LTD
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