Composite material structure and its preparation method

Abstract

The invention relates to a composite material structure and a preparation method thereof. The composite material structure includes a plastic base layer, a physical vapor deposition layer, a first electroplating layer, a second electroplating layer and a third electroplating layer. The physical vapor deposition layer includes a first deposition layer and a second deposition layer. The first deposition layer is attached to the plastic base layer, and the second deposition layer is attached to the side of the first deposition layer away from the plastic base layer. The first electroplating layer is attached to the side of the second deposition layer away from the first deposition layer. The second electroplating layer is attached to the side of the first electroplating layer away from the second deposition layer. The third electroplating layer is attached to the side of the second electroplating layer away from the first electroplating layer. The above-mentioned composite material structure can make the bonding force between the various layer structures stronger and the adhesion better by sequentially superimposing the plastic base layer, the physical vapor deposition layer, the first electroplating layer, the second electroplating layer and the third electroplating layer, and When preparing the above-mentioned composite structure, there is less toxicity.

Description

technical field [0001] The invention relates to the technical field of plastic surface treatment, in particular to a composite material structure and a preparation method thereof. Background technique [0002] At present, on the surface of plastic substrates, the metallization process can not only increase the appearance, but also compensate for the shortcomings of plastics, endow the properties of metals, and uniformly combine the characteristics of plastics and metals. [0003] Furthermore, there are mainly two methods for metallizing the surface of plastic substrates: traditional water electroplating process and physical vapor deposition process. However, there are defects in using these two processes to realize metallization of plastic substrates respectively. [0004] Among them, the traditional water electroplating electroless nickel layer has the characteristics of strong adhesion, high binding force and good conductivity, and can provide a stable and mature pretreatm...

AI Technical Summary

Problems solved by technology

However, the traditional water electroplating electroless nickel process needs to go through the processes of hydrophilicity, roughening, neutralization, palladium water, degelling, and electroless nickel electroplating. Utilization and protection; and, especially due to the existence of the electroplating hexavalent chromium layer process in this structure, hexavalent chromium is highly toxic, easy to cause cancer, and has the disadvantages of high sewage treatment costs, and the product cannot meet the requirements of the EU WEEE and ROHS directives, resulting in It is difficult to export, and the clean production of electroplating cannot be truly realized

[0005] Among them, due to the lack of processing procedures for the plastic base layer in the physical vapor deposition process, the film layer formed by it is not enough to meet the requirements in terms of adhesion and bonding. Although this deficiency can be made up by adding a spray coating, the cost is high. It is difficult to promote the application

If the alternative solution of combining spray paint coating with physical vapor deposition film layer is adopted, the cost of this solution is high, and mass production is limited accordingly

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