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A kind of chemical polishing solution and polishing method of titanium cathode roll for electrolytic copper foil

A technology for chemical polishing and electrolysis of copper foil, applied in the field of polishing liquid, can solve the problems of coarse crystals, affecting the growth of electrodeposited crystal form of copper foil, poor conductivity of cathode rollers, etc.

Active Publication Date: 2020-10-30
JIANGSU MINGFENG ELECTRONIC MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the process of producing copper foil by electrolysis of titanium cathode roller, due to electrochemical corrosion and mechanical corrosion on the surface of titanium cathode roller, the oxide film on the surface of the cathode roller gradually thickens, resulting in poor conductivity of the cathode roller
At the same time, it will be accompanied by uneven color on the surface of the cathode roller, resulting in some bright lines, which will affect the crystal growth of the copper foil during electrodeposition.
In addition, due to the increasing roughness of the surface of the titanium cathode roller, the electrodeposited crystals of copper ions on the surface of the cathode roller are coarse

Method used

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  • A kind of chemical polishing solution and polishing method of titanium cathode roll for electrolytic copper foil

Examples

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Effect test

Embodiment 1

[0012] Slowly dissolve monochloroacetic acid in deionized water, slowly add an aqueous solution of disodium edetate under stirring conditions, then add an aqueous solution of nonylphenol polyoxyethylene ether (NP-10), mix to obtain a polishing solution, and polish The concentration of monochloroacetic acid in the liquid is 10g / L, the concentration of disodium edetate is 10g / L, and the concentration of nonylphenol polyoxyethylene ether (NP-10) is 0.01g / L. After the titanium plate is cleaned and degreased, it is placed in a chemical polishing solution, soaked for 20 minutes under the condition of stirring the chemical polishing solution at 20°C, and the purpose of polishing the titanium plate can be achieved. The appearance and roughness results of the titanium plates are listed in Table 1.

Embodiment 2

[0014] Slowly dissolve dichloroacetic acid in deionized water, slowly add an aqueous solution of disodium edetate under stirring conditions, then add an aqueous solution of nonylphenol polyoxyethylene ether (NP-10), mix to obtain a polishing solution, and polish The concentration of dichloroacetic acid in the liquid is 50g / L, the concentration of disodium edetate is 20g / L, and the concentration of nonylphenol polyoxyethylene ether (NP-10) is 0.05g / L. After the titanium plate is cleaned and degreased, it is placed in a chemical polishing solution, soaked for 15 minutes under the condition of stirring the chemical polishing solution at 30°C, and the purpose of polishing the titanium plate can be achieved. The appearance and roughness results of the titanium plates are listed in Table 1.

Embodiment 3

[0016] Slowly dissolve trichloroacetic acid in deionized water, slowly add an aqueous solution of disodium edetate under stirring conditions, then add an aqueous solution of nonylphenol polyoxyethylene ether (NP-10), mix to obtain a polishing solution, and polish The concentration of trichloroacetic acid in the liquid is 75g / L, the concentration of disodium edetate is 30g / L, and the concentration of nonylphenol polyoxyethylene ether (NP-10) is 0.1g / L. After the titanium plate is cleaned and degreased, it is placed in a chemical polishing solution, soaked for 10 minutes under the condition of stirring the chemical polishing solution at 40°C, and the purpose of polishing the titanium plate can be achieved. The appearance and roughness results of the titanium plates are listed in Table 1.

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Abstract

The invention discloses titanium cathode roller chemical polishing liquid for electrolytic copper foil and a polishing method thereof, and belongs to the technical field of polishing liquid. The titanium cathode roller chemical polishing liquid is composed of a water solution composed by chlorinated acetic acid, ethylene diamine tetraacetic acid and surfactant nonylphenol polyoxyethylene ether. Inthe chemical polishing liquid, the concentration of the chlorinated acetic acid is 10-100g / L, the concentration of the ethylene diamine tetraacetic acid is 10-50g / L, and the concentration of the surfactant nonylphenol polyoxyethylene ether is 0.01-0.5g / L. The polishing method of the titanium cathode roller chemical polishing liquid for the electrolytic copper foil includes the steps that after atitanium cathode roller is cleaned and degreased, the titanium cathode roller is placed in the chemical polishing liquid, under the condition with the temperature being 20-60 DEG C, the titanium cathode roller is soaked for 5-20 minutes by rotating a roller cylinder. According to the titanium cathode roller chemical polishing liquid for the electrolytic copper foil and the polishing method thereof, operation is simple, the polished titanium cathode roller has a smooth surface, and is provided with a mirror face after polishing, and the manufactured electrolytic copper foil has the advantages of fine and compact crystallization and easy stripping; and the titanium cathode roller can meet the needs of copper foil for a lithium battery and copper foil for a printed circuit board through repairing of the chemical polishing liquid.

Description

technical field [0001] The invention belongs to the technical field of polishing liquid, and relates to a chemical polishing liquid and a polishing method for a titanium cathode roller for electrolytic copper foil. Background technique [0002] There are two methods of manufacturing copper foil: electrolysis and calendering. Among them, electrolysis is a more common method. In the process of manufacturing copper foil by electrolysis, titanium cathode roller is an important part of manufacturing electrolytic copper foil. During the electrolytic production of copper foil by titanium cathode roller, due to electrochemical corrosion and mechanical corrosion on the surface of titanium cathode roller, the oxide film on the surface of the cathode roller gradually thickens, resulting in poor conductivity of the cathode roller. At the same time, it will be accompanied by uneven color on the surface of the cathode roller, resulting in some bright lines, which will affect the crystal g...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23F3/06
CPCC23F3/06
Inventor 王钰如陈岢豪张凯淇张亚婷吴敏娴陈智栋
Owner JIANGSU MINGFENG ELECTRONIC MATERIALS CO LTD
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