A kind of metal-resin composite body and preparation method thereof

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

Active Publication Date: 2016-03-02
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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preparation example Construction

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

[0027] S1, Scratches: A metal substrate with nicks formed on the surface of the pre-treated metal substrate. The method of forming a number of nicks on the surface of the pre-treated metal substrate is not limited in the present invention, for example, CNC, hand-engraving or etching solution can be used. The preferred method of scoring in the present invention is laser engraving to form laser scoring. For laser engraving, various laser engraving machines known to those skilled in the art can be used. The present invention is not limited. It is further preferred that the power of laser engraving is 10-80w and the speed is 100 ~3000mm / s, the frequency is 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 su...

Embodiment 1

[0046] In this embodiment, an aluminum alloy resin composite is prepared;

[0047] 1. Pre-treatment: Cut the commercially available 1mm thick 5052 aluminum alloy plate into 15mm*80mm rectangular pieces, put them in a polishing machine, grind them, and then degrease and clean them, and then hydrogenate them at 60℃ Sodium content of 40g / L solution is alkali-washed for 10s. After washing with water, put HNO with a content of about 6wt% 3 Neutralize in the neutralization tank for 30 seconds, and then rinse with clean water to obtain pre-treated aluminum alloy sheets.

[0048] 2. Notch: Put the above aluminum alloy sheet in the laser working area of ​​the LFS20 laser marking machine made by HG Laser, adjust the power of the laser machine to 20w, the speed to 300mm / s, and the frequency to 20kHz. The aluminum alloy sheet needs to be injection molded. Laser engraved on the surface of the aluminum sheet to engrave a straight concave groove parallel to the bottom edge of the aluminum sheet. ...

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 the step 2 was scoring: the aluminum alloy sheet was placed in the laser working area of ​​the LFS20 laser marking machine made by HG Laser , Adjust the power of the laser machine to 20w, speed to 300mm / s, 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, the width and depth of the score are 20um , Laser engraves multiple concentric circular notches on the surface of the aluminum alloy sheet that needs to be injection-molded to contact, the interval between adjacent circular notches is 20um, and 70 notches are carved 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 parts manufacturing fields of automobiles, household 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 under normal temperature or heating. Although the metal and plastic composites can be prepared by the above methods, the composites obtained according to these methods have poor bonding force between the metal and plastics, and the adhesive has poor acid and alkali resistance, and the composites cannot be subjected to subsequent anodization. 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 put forward nano-processing technology...

Claims

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Application Information

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Patent Type & Authority Patents(China)
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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