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A surface-treated metal and a method for surface treatment thereof, a metal-resin composite and a preparation method thereof

A surface treatment, metal resin technology, applied in anodizing and other directions, can solve problems such as weak bonding between metal and resin

Active Publication Date: 2015-08-26
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 metal and resin in the prior art when metal-resin composites are prepared from metal

Method used

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  • A surface-treated metal and a method for surface treatment thereof, a metal-resin composite and a preparation method thereof
  • A surface-treated metal and a method for surface treatment thereof, a metal-resin composite and a preparation method thereof
  • A surface-treated metal and a method for surface treatment thereof, a metal-resin composite and a preparation method thereof

Examples

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preparation example Construction

[0040] The present invention also provides a method for preparing the above-mentioned metal-resin composite body, which includes the following steps: injecting the resin composition on the surface of the metal base material that has undergone surface treatment, and obtaining the metal-resin composite body after molding. For example, the surface-treated metal substrate can be placed in a mold, and then the resin composition can be injected into the mold to combine with the surface-treated metal substrate, and a metal-resin composite can be obtained after molding. Wherein, the surface-treated metal substrate is the above-mentioned surface-treated metal.

[0041] According to the preparation method of the metal-resin composite body provided by the present invention, the main resin and the polyolefin resin are uniformly mixed to prepare a resin composition. The preparation method of the resin composition adopts the method of physical blending commonly used by those skilled in the ...

Embodiment 1

[0049] This example prepares an aluminum alloy resin composite body;

[0050] 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 30 seconds, and then wash with water to obtain a pretreated aluminum alloy sheet;

[0051] 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 for 5 minutes at 18°C, and bake at 80°C for 20 minutes;

[0052] 3. Surface treatment 2: Prepare 500ml of a mixed solution of 5wt% hydrochloric acid and 10wt% sodium chloride in a beaker, put it in a constant temperature bath at 25°C and raise the temperature to 25°C, immerse 10 PCS of ...

Embodiment 2

[0057] The same method as in Example 1 was used to prepare aluminum alloy resin composites A2 and B2, except that surface treatment 2 was to prepare 500ml of a mixed solution of 5wt% hydrochloric acid and 10wt% sodium chloride in a beaker and put it at 25°C The temperature was raised to 25°C in a constant temperature tank, and 10 PCS of the above-mentioned aluminum alloy sheets were immersed in it, taken out after 10 minutes, put into a beaker filled with water and soaked for 2 minutes, and then put the aluminum alloy in an oven at 80°C for drying. Using the same method as in Example 1, it was measured that a 6-7um thick loose layer, an 85-100nm thick barrier layer and a 20nm-40um corrosion layer were obtained on the surface of the aluminum alloy sheet after electrolysis. The pore diameter of the micropores of the anodized film in the loose layer is 15nm-1um; the pore diameter of the corrosion pores of the barrier layer in the barrier layer is 16-800nm; the pore diameter of the...

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Abstract

The invention provides a surface treated metal and a surface treatment method thereof and a metal resin complex and a preparation method of the metal resin complex. The surface treated metal comprises a metal body and an anodic oxidation film layer which is located on the surface of the metal body, the anodic oxidation film layer includes a barrier layer which is in contact with the metal body and a loose layer located on the outer surface of the barrier layer, the loose layer contains anodic oxidation film micropores, the pore diameter of the anodic oxidation film micropores is 10 nm-800 mum, the barrier layer contains barrier layer corrosion pores, the pore diameter of the barrier layer corrosion pores is 10 nm-800 mum, the metal body includes a corrosion layer which is in contact with the barrier layer, the corrosion layer contains metal corrosion pores, the pore diameter of the metal corrosion pores is 10 nm-1 mm, the metal is aluminum alloy or aluminum, the bonding force between the metal and resin is strong, and the surface treated metal is simple in process, is easy for large-scale production, and has no pollution.

Description

technical field [0001] The invention relates to a surface-treated metal and its surface treatment method, a metal-resin composite and its preparation method, more specifically, to a surface-treated metal with three layers of pores and the surface treatment of this metal The method and the metal-resin composite formed by integrating the surface-treated metal and thermoplastic resin and its preparation method. 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 resis...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25D11/04B29C45/14
Inventor 章晓程云郭强陈梁
Owner BYD CO LTD
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