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Metal-resin composite and preparation method thereof

A technology of metal resin and composite body, applied in the direction of coating, etc., can solve the problem of weak bonding between metal and resin

Active Publication Date: 2014-01-15
BYD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In order to solve the technical problem of the weak metal-resin binding force of the metal-resin composite in the prior art, the present invention provides a metal-resin composite with strong metal-resin binding force, easy preparation and large-scale production and a preparation method thereof

Method used

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Examples

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Effect test

preparation example Construction

[0026] The present invention also provides a method for preparing the metal-resin composite, comprising the following steps:

[0027] S1, notch: a metal substrate with notches formed on the surface of the pretreated metal substrate. The method of forming several notches on the surface of the pretreated metal substrate is not limited in the present invention, for example, CNC, manual engraving or etching with etching solution. The preferred notch method of the present invention is laser engraving to form laser notches. Laser engraving can adopt various laser engraving machines known to those skilled in the art. The present invention is not limited. Further preferred laser engraving power is 10-80w, and the speed is 100 ~3000mm / s, frequency 20~80kHz, after setting the engraving parameters, put the surface of the pre-treated metal substrate to be engraved into the engraving machine, and engrave the designed pattern on the surface of the metal substrate, so as to obtain a surface ...

Embodiment 1

[0046] This example prepares an aluminum alloy resin composite body;

[0047]1. Pre-treatment: Cut the commercially available 1mm thick 5052 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 Wash with alkali in a solution with a sodium content of 40g / L for 10s, wash with water and put in HNO with a content of about 6wt% 3 Neutralize in a neutralization tank for 30 seconds, and then wash with water to obtain a pretreated aluminum alloy sheet.

[0048] 2. Scoring: Place the above-mentioned aluminum alloy sheet in the laser working area of ​​the LFS20 laser marking machine made by Huagong Laser, adjust the power of the laser machine to 20w, the speed to 300mm / s, and the frequency to 20kHz, and the aluminum alloy sheet needs to be injection-molded. Laser engraving on the surface of the aluminum alloy sheet, engraving a linear concave groove parallel to the bottom edge of th...

Embodiment 2

[0053] The aluminum alloy sheet sample A2 and the aluminum alloy resin composite S2 were prepared by the same method as in Example 1, except that step 2 was notched: the above aluminum alloy sheet was placed in the laser working area of ​​the LFS20 laser marking machine made by Huagong Laser , adjust the power of the laser machine to 20w, the speed to 300mm / s, and the frequency to 20kHz. Laser engrave on the surface of the aluminum alloy sheet that needs to be injection-molded, and engrave a circular concave groove with a width and depth of 20um. , Laser engrave multiple concentric circular notches on the surface of the aluminum alloy sheet to be in contact with injection molding, the interval between adjacent circular notches is 20 um, and engrave 70 notches on the surface of 15mm*5mm.

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Abstract

The invention provides a metal-resin composite and a preparation method thereof. The metal-resin composite comprises a metal basal material and a resin member, the surface of the metal basal material is provided with a plurality of nicks, the width of each nick is 10 to 200 [mu]m, the depth of each nick is 1 [mu]m to 200 [mu]m, and a resin composition forming the resin member is filled in the nicks. The prepared metal-resin composite has strong bonding force, especially allows the binding force to be improved in the transverse direction, the longitudinal direction and other multiple directions after being treated by an etching solution, and has better binding force of vertical combination end face contact, breaking protection and the like; and the method is simple and easy to implement, is wide in application range, and lays a foundation for industry development.

Description

technical field [0001] The invention relates to a metal-resin composite body and a preparation method thereof. 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 anodized. And other surface treatment. Therefore, people have been studying whether there is a more reasonable way to integrate high-strength engineering resins with alloys such as aluminum alloys. [0003] Those skilled in the art have proposed ...

Claims

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Application Information

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IPC IPC(8): B29C45/14B29C45/17B29B11/00
CPCB29C45/1418B29C45/14336B29C45/14344
Inventor 程云章晓赵桂网
Owner BYD CO LTD
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