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Preparation method of metal resin complex and metal resin complex prepared thereby

A metal resin and composite technology, applied in the direction of metal layered products, chemical instruments and methods, coatings, etc., can solve the problems of poor tensile properties, reducing the bonding strength of aluminum alloy and resin, etc.

Active Publication Date: 2013-12-18
BYD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] There is also an aluminum oxide film layer with holes with a diameter of 0.05-0.08 microns prepared by anodizing on the surface of the aluminum alloy, and then combined with a resin to obtain an aluminum-plastic integrated product, but the holes formed on the surface of the aluminum alloy obtained by this method are too small and It is difficult for the resin to be directly injected into the nano-scale holes, which reduces the bonding strength between the aluminum alloy and the resin, that is, the tensile properties are poor

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0012] The invention provides a method for preparing a metal-resin composite, comprising the following steps:

[0013] S1, forming micropores on the surface of the pretreated metal substrate, the metal substrate is an aluminum alloy substrate or an aluminum substrate, the method of forming micropores on the surface of the pretreated metal substrate can be adopted by those skilled in the art Various well-known methods of forming micropores, such as direct acid-base etching and amine corrosion on the surface of metal substrates, etc., the pretreated metal substrates can be etched by acid etching, alkali etching or amine corrosion Micropores are formed on the surface of the metal substrate after being treated with the etching solution. The present invention is not limited, and the injected resin can be filled into the micropores, and the bonding force between the resin and the metal is strong.

[0014] The preferred step S1 of the present invention includes anodizing the pretreat...

Embodiment 1

[0043] This example prepares an aluminum alloy resin composite body;

[0044] 1. Pretreatment: Cut the commercially available 1mm thick 6063 aluminum alloy plate into 15mm*80mm rectangular pieces, put it into a polishing machine for grinding, then degrease and clean it, and then oxidize it at 60°C Alkaline etching treatment in a solution with a sodium content of 40g / L for 10s, rinse with water and put in HNO 3 Neutralize in a neutralization tank with a content of about 6wt% for 30s, and then wash with water to obtain a pretreated aluminum alloy sheet;

[0045] 2. Surface treatment 1: Put the above aluminum alloy sheet as an anode into H with a concentration of about 15wt%. 2 SO 4 In the anodizing tank, electrolyze at 15V for 5 minutes at 18°C, and bake at 80°C for 20 minutes;

[0046] 3. Surface treatment 2: Prepare 500ml of 10wt% HCl aqueous solution in a beaker, put it in a 25°C constant temperature tank and raise the temperature to 25°C, immerse 10PCS of the above-mentio...

Embodiment 2

[0052] The aluminum alloy resin composite S2 was prepared by the same method as in Example 1, except that step 4, soaking modification: immerse the above-mentioned surface-treated aluminum alloy sheet in 10wt% polyethylene glycol (the degree of polymerization is 500-600 ) in an aqueous solution at 30°C, take it out after 5 minutes, and dry it in an oven at 80°C.

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PUM

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Abstract

The invention provides a preparation method of a metal resin complex and the metal resin complex prepared thereby. The preparation method of the metal resin complex comprises the following steps: S1, micropores are formed on the surface of a pretreated metal substrate, and the metal substrate is an aluminum alloy substrate or aluminum substrate; S2, the metal substrate having the micropores on the surface thereof and obtained by the step S1 is soaked in a water-soluble polymer solution for modification; and S3, the surface of the treated metal substrate modified by soaking in the step S2 is coated with a resin composition, and after molding the metal resin complex is obtained. In the metal resin complex, the binding force between metal and resin is strong, and the process is simple, is easy for large-scale production, and has no pollution.

Description

technical field [0001] The present invention relates to a method for preparing a metal-resin composite body and the metal-resin composite body prepared therefrom, more specifically, to a metal-resin composite body formed by integrating a metal with a stronger binding force and a thermoplastic resin and the metal-resin composite body and the metal-resin composite body 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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C45/14C25D11/04C25D11/24B32B15/08B32B37/15
Inventor 章晓程云郭强
Owner BYD CO LTD
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