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Zinc alloy environment-friendly coloring liquid and coloring process thereof

A technology of coloring liquid and zinc alloy, which is applied in the field of chemical coloring, can solve the problems of short service life, difficulty, and slow film forming speed of the plating liquid, and achieve the effects of good bonding, strong bonding force, and cost reduction

Active Publication Date: 2022-06-14
东莞振顺五金制品有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, electroless plating has the disadvantages of short service life of plating solution, large amount of wastewater discharge, slow film forming speed and high cost.
[0005] Whether it is electroplating or electroless plating, the surface coating treatment of zinc alloys has always been difficult, so the surface coating process of zinc alloys needs further research

Method used

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  • Zinc alloy environment-friendly coloring liquid and coloring process thereof
  • Zinc alloy environment-friendly coloring liquid and coloring process thereof
  • Zinc alloy environment-friendly coloring liquid and coloring process thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] A zinc alloy environmentally friendly coloring solution that contains the following concentrations of raw materials:

[0036]

[0037]

[0038] The pH of the colorant is 3-5.

[0039] Zinc alloy environmentally friendly coloring process, including the following steps:

[0040] The zinc alloy is successively carried out ultrasonic degreasing, water washing, pickling activation, and then washed, and then the above-mentioned zinc alloy environmental protection coloring solution is used to soak it for 10-20 minutes at 25 to 30 °C, and then cleaned and dried. The above-mentioned ultrasonic degreasing, water washing, pickling activation, and re-washing operations are conventional technical means in the art.

Embodiment 2

[0042] A zinc alloy environmentally friendly coloring solution that contains the following concentrations of raw materials:

[0043]

[0044]

[0045] The pH of the colorant is 5-6.

[0046] Zinc alloy environmentally friendly coloring process, including the following steps:

[0047] The zinc alloy is successively carried out ultrasonic degreasing, water washing, pickling activation, and then water washing, and then the above-mentioned zinc alloy environmental protection coloring solution is used to soak it for 20-25 minutes at 35 to 40 °C, and then clean and dry. The above-mentioned ultrasonic degreasing, water washing, pickling activation, and re-washing operations are conventional technical means in the art.

Embodiment 3

[0049] A zinc alloy environmentally friendly coloring solution that contains the following concentrations of raw materials:

[0050]

[0051]

[0052] The pH of the colorant is 3-4.

[0053] Zinc alloy environmentally friendly coloring process, including the following steps:

[0054] The zinc alloy is successively carried out ultrasonic degreasing, water washing, pickling activation, and then washed, and then the above-mentioned zinc alloy environmental protection coloring solution is used to soak it for 20-25 minutes under 20 to 25 °C conditions, and then clean and dry. The above-mentioned ultrasonic degreasing, water washing, pickling activation, and re-washing operations are conventional technical means in the art.

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Abstract

According to the zinc alloy environment-friendly coloring liquid and the coloring process thereof, the coloring process is neither electroplating nor chemical plating, the cost is reduced, a compact and stable film layer is obtained on the surface of the zinc alloy by controlling the components, the pH value and the reaction temperature of the coloring liquid, and the binding property is good. In the coloring liquid disclosed by the invention, when the zinc alloy is immersed into the solution containing the copper salt and the oxidizing agent, the matrix zinc alloy with relatively negative potential, copper ions with relatively positive potential and the oxidizing agent easily form a microscopic corrosion battery, and a redox reaction is carried out, so that a layer of oxidation film is formed on the surface of the zinc alloy. According to the method, the reaction process and the deposition speed of the film layer can be easily controlled, the compact film layer with high binding force is obtained, and the film layer has good corrosion resistance, decoration performance and high hardness.

Description

Technical field [0001] The present invention belongs to the field of chemical coloring technology, specifically relates to a zinc alloy environmental protection coloring liquid and its coloring process. Background [0002] In daily life, zinc alloys are widely used, such as architectural decoration, toys, various accessories and decorations. Zinc alloy is easy to oxidize and be corroded in actual use, affecting the aesthetics of the product and the performance of use. Therefore, most of the prior art is to add a protective film on the surface of the zinc alloy, and the method used includes electroplating and chemical coating on the surface of the zinc alloy. [0003] Plating requires a low-voltage, high-current power supply that supplies power to the plating bath and an electrolytic device consisting of the plating solution, the parts to be plated (cathode) and the anode. When plating, the coated metal or other insoluble materials are anodized, the workpiece to be plated is the c...

Claims

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Application Information

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IPC IPC(8): C23C22/42C23C22/44
CPCC23C22/42C23C22/44
Inventor 熊梓仁冯政勇李梅菱梁爽杨军
Owner 东莞振顺五金制品有限公司
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