Zinc alloy electrolytic copper stripping agent

The technology of zinc alloy and complexing agent is applied in the field of zinc alloy electrolytic copper stripping agent, which can solve the problems affecting the recycling of workpieces, easy to corrode workpieces, waste gas pollution, etc., and achieve the effects of convenient transportation, corrosion inhibition, and high current efficiency.

Inactive Publication Date: 2016-11-23
HUIZHOU CITY HIROMI CHEM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, using strong corrosive agents such as nitric acid to peel off the coating will easily generate a large amount of exhaust gas to pollute the air, cause acid rain, easily corrode the workpiece, and affect the recycling of the workpiece.
However, dichromate and the like are toxic substances, and it is difficult and costly to treat them harmlessly.

Method used

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  • Zinc alloy electrolytic copper stripping agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Present embodiment provides a kind of zinc alloy electrolytic copper stripping agent, and its raw material comprises by weight:

[0037] Oxidizing agent: 85 parts;

[0038] Conductive salt: 150 parts;

[0039] Corrosion inhibitor: 45 parts;

[0040] The first complexing agent: 16 parts;

[0041] The second complexing agent: 4 parts;

[0042] Buffer: 30 parts;

[0043] Wherein, the oxidizing agent is nitrate, the conductive salt is pyrophosphate, the corrosion inhibitor is imidazolium salt, the first complexing agent is alcohol compound, and the second complexing agent is alcohol amine salt, and the buffer is acetate.

[0044] In this embodiment, the oxidant is ammonium nitrate, the conductive salt is calcium pyrophosphate, the corrosion inhibitor is 1-propyl-3-methylimidazolium chloride, and the first complexing agent is mannitol , the second complexing agent is triethanolamine, and the buffering agent is calcium acetate.

Embodiment 2

[0046] Present embodiment provides a kind of zinc alloy electrolytic copper stripping agent, and its raw material comprises by weight:

[0047] Oxidizing agent: 85 parts;

[0048] Conductive salt: 100 parts;

[0049] Corrosion inhibitor: 45 parts;

[0050] The first complexing agent: 16 parts;

[0051] The second complexing agent: 4 parts;

[0052] Buffer: 30 parts;

[0053]Wherein, the oxidizing agent is nitrate, the conductive salt is pyrophosphate, the corrosion inhibitor is imidazolium salt, the first complexing agent is alcohol compound, and the second complexing agent is alcohol amine salt, and the buffer is acetate.

[0054] In this embodiment, the oxidant is ammonium nitrate, the conductive salt is calcium pyrophosphate, the corrosion inhibitor is 1-propyl-3-methylimidazolium chloride, and the first complexing agent is mannitol , the second complexing agent is triethanolamine, and the buffering agent is calcium acetate.

Embodiment 3

[0056] Present embodiment provides a kind of zinc alloy electrolytic copper stripping agent, and its raw material comprises by weight:

[0057] Oxidizing agent: 85 parts;

[0058] Conductive salt: 150 parts;

[0059] Corrosion inhibitor: 30 parts;

[0060] The first complexing agent: 16 parts;

[0061] The second complexing agent: 4 parts;

[0062] Buffer: 30 parts;

[0063] Wherein, the oxidizing agent is nitrate, the conductive salt is pyrophosphate, the corrosion inhibitor is imidazolium salt, the first complexing agent is alcohol compound, and the second complexing agent is alcohol amine salt, and the buffer is acetate.

[0064] In this embodiment, the oxidant is ammonium nitrate, the conductive salt is calcium pyrophosphate, the corrosion inhibitor is 1-propyl-3-methylimidazolium chloride, and the first complexing agent is mannitol , the second complexing agent is triethanolamine, and the buffering agent is calcium acetate.

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Abstract

The invention discloses a zinc alloy electrolytic copper stripping agent. The zinc alloy electrolytic copper stripping agent comprises the following raw materials in parts by weight: 50-100 parts of oxidant, 100-180 parts of conducting salt, 30-60 parts of corrosion inhibitor, 10-20 parts of first complexing agent, 3-5 parts of second complexing agent, and 15-40 parts of buffer agent. The electrolytic copper stripping agent has the advantages of good deplating effect, high efficiency, greenness, environmental protection and facilitation of safe production, can reduce the cost, and improves the benefit.

Description

technical field [0001] The invention relates to the technical field of electroplating, in particular to a zinc alloy electrolytic copper stripping agent. Background technique [0002] In the field of electroplating technology, because electroplating factories will encounter various uncertain factors (such as machine equipment, materials, working methods, environment, management, etc.) in the actual electroplating process, in large-scale industrial production, electroplating often occurs. Defective products cause a lot of waste and increase the cost. In order to reduce waste and save costs, various methods are usually used to strip off the surface coating of defective workpieces to realize the recycling of workpieces. The commonly used stripping methods are divided into chemical stripping and electrolytic stripping. [0003] At present, zinc alloy substrate electroplating is widely used, and due to the metal material of zinc alloy itself, the qualified rate of electroplatin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25F5/00
CPCC25F5/00
Inventor 叶洪城叶洪源
Owner HUIZHOU CITY HIROMI CHEM CO LTD
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