Process for plating trivalent chromium on surfaces of plastic

A technology of trivalent chromium and trivalent chromium salts, which is applied in metal material coating process, liquid chemical plating, superimposed layer plating, etc. and human health hazards, to achieve the effect of excellent quality of finished products, highlighting substantive characteristics, and improving the degree of pollution

Inactive Publication Date: 2011-11-16
鹰普航空科技(南通)有限公司
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  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the existing deficiencies of uneven distribution of hexavalent chromium plating on plastic materials, poor binding force, and great harm to environmental protection and human health, the invention provides a process for electroplating trivalent chromium on the surface of plastics, so that it can be coated on the surface Uniform distribution, strong binding force, improving environmental pollution and significantly reducing harm to human body

Method used

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  • Process for plating trivalent chromium on surfaces of plastic
  • Process for plating trivalent chromium on surfaces of plastic

Examples

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Embodiment Construction

[0020] A process for electroplating trivalent chromium on a plastic surface, characterized in that the surface of a plastic material to be processed is treated in the following process steps:

[0021] (1) to remove surface grease, the composition and concentration (grams per liter) of the mixed solution used are:

[0022] Example

[0023] (2) Surface microscopic roughening treatment, the component concentration (g / L) of the mixed solution used is:

[0024] Example

[0025] (3) surface reduction treatment, the component concentration (gram / liter) of using solution is:

[0026] Example

[0027] (4) Surface colloidal palladium is activated, and the component concentration (gram / liter) of using mixed solution is:

[0028] Example

[0029] (5) surface degumming treatment, the solution component concentration (gram / liter) used is:

[0030] Example

[0031] (6) The surface is plated with chemical nickel, and the concentration of the...

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Abstract

The invention relates to a process for plating trivalent chromium on surfaces of plastic. The process is characterized by treating the surfaces of a plastic processing piece through the following steps: surface oil removal, surface micro-roughing treatment, reduction treatment, colloidal palladium activation, dispergation treatment, chemical nickel plating, watt nickel plating, bright copper plating, bright nickel plating, trivalent chromium plating, testing, packaging and storage. The process provided by the invention can be used for plating decorative chromium and nickel on the surfaces of plastic and rubber parts in communication, IT (information technology), digital, automobile and other industries, has the advantages of scientific and rational plating liquid and process, strong adhesion of a plating layer, uniform distribution of the plating layer, excellent quality of the plating layer and no use of extremely toxic and carcinogenic hexavalent chromium, and can be used for significantly reducing the environmental pollution.

Description

technical field [0001] The invention relates to a process method for electroplating trivalent chromium on the surface of plastic. Background technique [0002] Many components in the communication, IT, digital, automobile and other industries are made of plastic materials, and their surfaces are plated with chrome and nickel. The prior art is to plate and decorate hexavalent chromium on the surface of plastics. The disadvantage is that the surface uniformity of the coating is poor, the bonding force between the coating and the plastic material is weak, and the coating is easy to peel off and separate. In addition, hexavalent chromium has high carcinogenicity, which is harmful to Environmental protection and human health are extremely harmful. Contents of the invention [0003] In order to overcome the existing deficiencies of uneven distribution of hexavalent chromium plating on plastic materials, poor bonding force, and great harm to environmental protection and human he...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D5/56C23C18/36C23C18/20C23C18/22C23C28/02
Inventor 陶云峰仇士学黄修康陈建敏
Owner 鹰普航空科技(南通)有限公司
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