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Template-method dyeing method for metal surfaces

A technology of metal surface and dyeing method, which is applied in the direction of electrolytic coating, electrophoretic plating, coating, etc., can solve the problems of natural environment and workers' operating environment hazards, and achieve the effect of rich colors, low energy consumption and high efficiency

Active Publication Date: 2016-06-15
ZHEJIANG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But so far, only alloys such as aluminum and zinc can be dyed, and chromic acid passivation is required to obtain a loose and porous film layer, which is extremely harmful to the natural environment and the operating environment of workers.

Method used

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  • Template-method dyeing method for metal surfaces
  • Template-method dyeing method for metal surfaces
  • Template-method dyeing method for metal surfaces

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] (1) Prepare 100mL of electrophoresis solution: Put 50ml of methyl 2-methacrylate (47.2g) and 250ml of water into a three-necked flask, heat the water bath to 70°C, put in 0.17g of recrystallized potassium persulfate, and react for 4h. Then the water bath was cooled to 50°C, filtered with 300-mesh gauze to obtain the template suspension, and kept at 6°C for use. Measure 10 ml of the template suspension prepared above into a beaker, add 90 ml of absolute ethanol, and stir evenly to obtain an electrophoresis solution.

[0030] (2) The zinc flakes (Shenzhen Ketianhua Glass Instrument Co., Ltd., with a zinc content of 99.5%) are smoothed on different types of sandpaper, cleaned with water, and then placed in a 2:1 ethanol-acetone mixture. Ultrasound at 40KHz for 20min, then rinse with water and set aside.

[0031] (3) Put the zinc flakes processed in step (2) into the electrophoresis solution prepared in step (1), use the zinc flakes as the anode, and the stainless steel flakes ...

Embodiment 2

[0037] (1) Prepare 100mL of electrophoresis solution: put 150ml of ethyl acrylate (141g) and 250ml of water into a three-necked flask, heat the water bath to 70℃, put 4g of recrystallized sodium persulfate, react for 4h, then cool to 50 ℃, filter with 300 mesh gauze to obtain the template suspension, and refrigerate at 6 ℃ for later use. Measure 10 ml of the above-prepared template and suspend it in a beaker, add 90 ml of absolute ethanol, and stir evenly to obtain an electrophoresis solution.

[0038] (2) Polish the aluminum sheet (Shanghai Luyi Metal Material Co., Ltd., brushed aluminum sheet) on different types of sandpaper, clean it with water, and then place it in the ethanol-acetone mixture with a volume ratio of 2:1, and ultrasonicate at 40KHz for 20min , Then rinse with water and set aside.

[0039] (3) Put the aluminum sheet processed in step (2) into the electrophoresis solution prepared in step (1), use the aluminum sheet as the anode, and the stainless steel sheet (Wux...

Embodiment 3

[0045] (1) Prepare 100mL of electrophoresis solution: put 100ml of ethyl 2-methacrylate (91.2g) and 250ml of water into a three-necked flask, heat the water bath to 70℃, put in 8g of recrystallized ammonium persulfate, react for 4h, then Cool to 50°C in a water bath, filter with 300 mesh gauze to obtain the template suspension, and refrigerate at 6°C for later use. Measure 10 ml of the above-prepared template and suspend it in a beaker, add 90 ml of absolute ethanol, and stir evenly to obtain an electrophoresis solution.

[0046] (2) Polish the copper sheet (Shanghai Zicheng Copper Co., Ltd., QAL9-4 bronze plate) on different types of sandpaper, clean it with water, and then place it in the ethanol-acetone mixture with a volume ratio of 2:1. Ultrasound at 40KHz for 20min, then rinse with clean water and set aside.

[0047] (3) Put the copper sheet processed in step (2) into the electrophoresis solution prepared in step (1), use the copper sheet as the anode and the stainless steel...

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Abstract

The invention provides a template-method dyeing method for metal surfaces. The method includes the steps that a metal workpiece is polished with abrasive paper to be smooth; the metal workpiece is placed into ethyl alcohol-acetone mixing liquid after washed with water so as to be subject to ultrasonic treatment; then the metal workpiece is placed into electrophoresis liquid after washed with water, and electrophoresis is carried out with the metal workpiece as a positive pole and stainless steel as a negative pole at the normal temperature, wherein the voltage ranges from 1 V to 50 V, and the electrophoresis time ranges from 1 min to 60 min; the metal workpiece obtained after electrophoresis is directly placed into corrosion liquid -to be corroded for 1 min to 120 min; the corroded metal workpiece is thoroughly washed with water, dried and placed into dye liquor to be soaked for 1 min to 30 min, and then the metal workpiece is taken out, thoroughly washed with clean water, and placed into boiling water for hole sealing for 10 min to 30 min; and then the metal workpiece is taken out and dried, and finished products are obtained. By means of the dyeing technology, according to the design of characteristics of most of metal, the beneficial effects of being simple in processing technology, low in temperature, environment-friendly, less in energy dissipation, high in efficiency and even and abundant in color are achieved, and the wide application prospect is achieved.

Description

(1) Technical field [0001] The invention belongs to the technical field of metal surface treatment, and specifically relates to a template method dyeing method of metal surfaces. (2) Background technology [0002] Metal materials have the advantages of electrical conductivity, heat conduction, high melting point, high ductility, etc., are widely used in various industries such as industry, agriculture, construction, national defense, etc., and have always been an important foundation for the civilization and development of human society. In order to meet the needs of modern society, in addition to traditional metal processing and molding methods, people have also developed various surface treatment technologies to improve their various aspects of performance, such as hardness, plasticity, toughness, corrosion resistance, decoration, etc. The surface decoration of metals has also attracted more and more attention. Although my country is a big metal exporter, the domestic metal su...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D13/22
CPCC25D13/22
Inventor 唐谊平张欢乐洪良郑国渠
Owner ZHEJIANG UNIV OF TECH
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