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Method for improving binding force of coating on plastic surface

A bonding force and coating technology, applied in the field of plastic surface metallization, can solve the problems of complex surface roughening process of injection molded parts, and achieve the effects of light weight, cost saving and good dimensional stability

Pending Publication Date: 2021-10-29
SHENZHEN SUNWAY COMM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In order to overcome the defects of the above-mentioned prior art, the technical problem to be solved by the present invention is: to solve the problem of complex surface roughening process of traditional injection molded parts

Method used

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  • Method for improving binding force of coating on plastic surface

Examples

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Embodiment 1

[0036] A method for improving the binding force of the plastic coating, the base material is a carbon fiber reinforced polyetherimide composite material, wherein the carbon fiber content is 30%, the bottom layer material of the seed layer is Ti (about 50nm), and the material of the outer layer is Cu ( about 250 nm); the material of the intermediate layer is Cu (about 7 μm); the material of the protective layer is Ag (about 5 μm).

[0037] A method for improving the binding force of plastic coatings, comprising the steps of:

[0038] 1. Injection molding: use a high-speed injection molding machine to inject the base material into an injection mold with a pre-roughened surface to a certain roughness (surface roughness is 1 μm, 3 μm and 5 μm), and obtain injection molded parts with different roughness (Surface roughness is 3 μm, 5 μm and 7 μm).

[0039] 2. Electroless plating: Electroless plating is performed on the surface of injection molded parts to obtain a seed layer.

[0...

Embodiment 2

[0045] The difference from Example 1 is that the base material is a glass fiber reinforced polyphenylene sulfide composite material, wherein the glass fiber content is 40%, the bottom layer material of the seed layer is Cr (about 50nm), and the material of the outer layer is Cu (about 250nm ); the material of the intermediate layer is Cu (about 7 μm); the material of the protective layer is Au (about 2 μm).

Embodiment 3

[0047] The difference with Example 1 is: the base material is a glass fiber reinforced syndiotactic polystyrene composite material, wherein the glass fiber content is 40%, the bottom layer material of the seed layer is NiCu alloy (about 50nm), and the outer layer material is Cu ( about 250nm); the intermediate layer material is Cu (about 7μm); the protective layer material is Sn (about 5μm).

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Abstract

The invention belongs to the technical field of plastic surface metallization, and particularly relates to a method for improving the binding force of coating on plastic surface. The method comprises the following steps of, performing injection molding on an injection molding part by using an injection mold with a roughness molded surface; and directly chemically plating and / or electroplating a metal coating on the surface of the injection molding part. According to the method for improving the binding force of the coating on the plastic surface, the cost of metallization of the surface of the injection molding part can be effectively reduced, and a plastic device which is lighter in mass and better in dimensional stability can be obtained on the premise that the binding force of the metal coating is 5B.

Description

technical field [0001] The invention belongs to the technical field of plastic surface metallization, and in particular relates to a method for improving the binding force of plastic surface coatings. Background technique [0002] Nowadays, plastic materials are widely used, and plastic parts have become indispensable components in home appliances, automobiles, mobile phones, base stations, medical equipment, and lighting appliances. Compared with metal parts, plastic parts can not only achieve a good metal texture, but also reduce the weight of the product. While effectively improving the appearance and decoration of plastics, it also improves its performance in terms of electricity, heat and corrosion resistance. In order to realize the above-mentioned characteristics of plastic parts, it is usually necessary to metallize the surface of plastic parts. The purpose is to cover the surface of plastic parts with metal, which not only increases the appearance, but also compensa...

Claims

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Application Information

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IPC IPC(8): C23C28/02C23C18/40C23C18/48C23C18/50C23C18/52C25D3/30C25D3/38C25D3/46C25D3/48C25D5/48C25D5/56B29C45/17
CPCC25D5/56C23C18/1641C23C18/52C23C18/40C23C18/48C23C18/50C25D3/38C25D5/48C23C28/023C23C28/021C25D3/48C25D3/46C25D3/30B29C45/1769
Inventor 游超群宋喆刘飞华虞成城
Owner SHENZHEN SUNWAY COMM