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High-efficiency environment-friendly nickel stripper and preparation method thereof

An environmentally friendly and efficient technology, applied in the field of nickel stripping agent and preparation of nickel stripping agent, can solve the problems of slow nickel layer stripping speed, high stripping temperature, harsh operating environment, etc., to avoid high toxicity and harsh operating environment. , reducing the effect of a lot of smoke

Inactive Publication Date: 2013-11-27
英洛华科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The invention provides a high-efficiency and environment-friendly nickel stripper and its preparation method, which solves the problems of slow stripping speed of nickel layer, high stripping temperature and bad operating environment

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Based on 100 parts by weight, ethylenediamine contains 6.00 parts, sodium m-nitrobenzenesulfonate contains 6.00 parts, citric acid contains 0.85 parts, organic amine additives contains 1.70 parts, and pure water contains 85.45 parts. The preparation process is as follows: slowly dissolve 6.00 parts of ethylenediamine in water under continuous stirring, then dissolve 6.00 parts of sodium m-nitrobenzenesulfonate in the aqueous solution of ethylenediamine under continuous stirring, and finally add 0.85 35.45 parts of citric acid and 1.70 parts of organic amine additives, and 35.45 parts of pure water were added, and the nickel stripper was obtained after stirring evenly.

[0015] Adjust the pH of the nickel stripping agent to 9.0, keep the temperature of the nickel stripping agent at 70°C, immerse the nickel-plated test piece with a thickness of 5um into the nickel stripping agent, and keep stirring, and record the complete stripping time of the coating as 30 Minutes, obse...

Embodiment 2

[0017] Based on 100 parts by weight, the nickel stripper consists of 7.41 parts of ethylenediamine, 7.41 parts of sodium m-nitrobenzenesulfonate, 0.99 parts of citric acid, 1.81 parts of organic amine additives and 82.38 parts of pure water. The preparation process is: slowly dissolve 7.41 parts of ethylenediamine in water under continuous stirring, then dissolve 7.41 parts of sodium m-nitrobenzenesulfonate in the aqueous solution of ethylenediamine under continuous stirring, and finally Add 0.99 parts of citric acid and 1.81 parts of organic amine additives, add 32.38 parts of pure water, and stir well to obtain the nickel stripper.

[0018] Adjust the pH of the nickel stripping agent to 9.0, keep the temperature of the nickel stripping agent at 70°C, immerse the nickel-plated test piece with a thickness of 5um into the nickel stripping agent, and keep stirring, and record the complete stripping time of the coating at the same time as 28 Minutes, observe that there is no corr...

Embodiment 3

[0020] Based on 100 parts by weight, the nickel stripper consists of 8.74 parts of ethylenediamine, 8.74 parts of sodium m-nitrobenzenesulfonate, 1.11 parts of citric acid, 1.91 parts of organic amine additives and 79.5 parts of pure water. The preparation process is as follows: slowly dissolve 8.74 parts of ethylenediamine in water under continuous stirring, then dissolve 8.74 parts of sodium m-nitrobenzenesulfonate in the aqueous solution of ethylenediamine under continuous stirring, and finally add 1.11 1 part of citric acid and 1.91 parts of organic amine additives, and supplemented with 29.5 parts of pure water, after stirring evenly, the nickel stripper is obtained.

[0021] Adjust the pH of the nickel stripping agent to 9.0, keep the temperature of the nickel stripping agent at 70°C, immerse the nickel-plated test piece with a thickness of 5um into the nickel stripping agent, and keep stirring, and record the complete stripping time of the coating at the same time as 25 ...

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PUM

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Abstract

The invention discloses a high-efficiency environment-friendly nickel stripper and a preparation method thereof, which solve the problems of low stripping speed and high stripping temperature of a nickel layer and hostile operating environment. Based on 100 parts by weight, the high-efficiency environment-friendly nickel stripper comprises the following substances: 5.19 to 12.82 parts of ethanediamine, 5.19 to 12.82 parts of sodium metanitrobenzene sulfonate, 0.74 to 1.71 parts of citric acid, 1.48 to 2.56 parts of an organic amine additive and 70.09 to 87.40 parts of pure water. The invention also discloses the preparation method of the high-efficiency environment-friendly nickel stripper. According to the high-efficiency environment-friendly nickel stripper and the preparation method thereof, quick stripping of the nickel layer is promoted; in particular, after the organic amine additive is used, the stripping speed of the nickel layer is greatly increased, the stripping temperature is reduced, and a great deal of smoke generated during stripping is reduced.

Description

technical field [0001] The invention relates to a nickel stripping agent and a preparation method of the nickel stripping agent. Background technique [0002] With the rapid development of modern science and technology and industrial construction, electroplating nickel and its alloys have been widely used as a technology in aviation, aerospace, machinery, automobiles, molds, electronics, computers, food, medical and other fields, and electroplating nickel Output has gradually become one of the important indicators to measure the level of a country's electroplating technology. However, some unqualified products will inevitably be produced during the nickel plating process, such as partial failure of the nickel layer; poor corrosion resistance; for workpieces with strict tolerance dimensions, the thickness of the nickel plating cannot meet the requirements; needles appear on the surface of the nickel layer. Holes, spots, peeling, blistering and other defects. If these unqu...

Claims

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Application Information

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IPC IPC(8): C23F1/28
Inventor 高志强刘晓芳
Owner 英洛华科技股份有限公司
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