A preparation method of copper foil and a modification additive for the production of the copper foil

An additive, copper foil technology, applied in electrolytic components, electrolytic process, electroforming and other directions, can solve the problem of organic impurities cannot be removed, achieve convenient and fast installation and replacement, improve purity, and achieve the effect of flattening

Active Publication Date: 2019-09-17
GUANGDONG FINE YUAN SCI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In the process of producing copper foil in the present invention, by setting the filter and adsorption components, the activated carbon in the filter and adsorption components can adsorb the filtered electrolyte, so that the organic impurities can be fully removed, and the influence of organic impurities on the electrolysis process can be prevented. The problem that the organic impurities in the electrolyte cannot be removed in the existing filtration process

Method used

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  • A preparation method of copper foil and a modification additive for the production of the copper foil
  • A preparation method of copper foil and a modification additive for the production of the copper foil
  • A preparation method of copper foil and a modification additive for the production of the copper foil

Examples

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Effect test

Embodiment 1

[0053] The concrete preparation process of modified additive is as follows:

[0054] Step 1: Add 1kg of fuchsin into 5.5L ethanol solution, stir to dissolve, heat up to 70°C and reflux, add 0.65kg of thiourea to it, stir to dissolve, then add 1.13kg of 1,6-diisocyanate to the reaction vessel Acyl hexane, constant temperature reaction 2h, then filter and wash to obtain mercapto fuchsin (BF-SH);

[0055] Step 2: Add 1kg of 5,8-dicarboxynaphthalene-2-sulfonate sodium and 8L of water into the reaction vessel, raise the temperature to 80°C, add 1.34kg of thionyl chloride to it, react at constant temperature for 5 hours, and then proceed at 90°C Evaporated and crystallized to obtain 5,8-diacylchloronaphthalene-2-sulfonyl chloride;

[0056] Step 3: Add 1kg of the mercapto fuchsin prepared in Step 1 into the reaction vessel, and at the same time add 7L of dimethyl sulfoxide to it. After mixing evenly, add 0.077kg of sodium hydroxide into the reaction vessel, and then raise the temper...

Embodiment 2

[0058] The concrete preparation process of modified additive is as follows:

[0059] Step 1: Add 1kg of fuchsin into 5.5L ethanol solution, stir to dissolve, heat up to 70°C and reflux, add 0.68kg of thiourea to it, stir to dissolve, then add 1.15kg of 1,6-diisocyanate to the reaction vessel Acyl hexane, react at constant temperature for 2 hours, then filter and wash to obtain thiolated fuchsin (BF-SH); add 5.5L of ethanol to each kilogram of fuchsin, add 0.65-0.68kg of thiourea, and add 1,6-diisocyanate Acyl hexane 1.13-1.15kg;

[0060] Step 2: Add 1kg of 5,8-dicarboxynaphthalene-2-sulfonate sodium and 8L of water into the reaction vessel, raise the temperature to 80°C and add 1.35kg of thionyl chloride to it, react at constant temperature for 5 hours, and then proceed at 90°C Evaporated and crystallized to obtain 5,8-diacylchloronaphthalene-2-sulfonyl chloride;

[0061]Step 3: Add 1kg of the mercapto fuchsin prepared in Step 1 into the reaction vessel, and at the same time...

Embodiment 3

[0063] A preparation method of copper foil, the specific preparation process is as follows:

[0064] Step 1: Clean the broken copper pieces and add them to the dissolving tank. At the same time, add deionized water to the dissolving tank, then add concentrated sulfuric acid, and blow air into the dissolving tank, and heat to slowly oxidize the copper in the dissolving tank into Copper oxide, the generated copper oxide reacts with sulfuric acid to form a copper sulfate aqueous solution, real-time detection of the concentration of copper ions in the dissolution tank, and the concentration of copper ions is controlled to 120-150g / L;

[0065] In the second step, the copper sulfate aqueous solution prepared in the dissolution tank is added to the storage tank, and multi-stage adsorption filtration is carried out through a multi-layer plate filter, and the organic impurities are removed through the filtration and adsorption components in the multi-layer plate filter. The multi-stage...

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Abstract

The invention discloses a copper foil preparation method. The specific preparation process includes the following steps that crushed copper sheets are cleaned and then added into a dissolving tank, and deionized water is added into the dissolving tank; then concentrated sulfuric acid is added, air is blown into the dissolving tank, copper in the dissolving tank is heated to be slowly oxidized intocopper oxide, and the generated copper oxide reacts with sulfuric acid to generate a copper sulfate aqueous solution; multi-stage adsorption filtration is carried out on the copper sulfate aqueous solution prepared in the dissolving tank through a multi-layer plate type filter; then filtered electrolyte is added into an electrolytic precipitation tank, a modified additive solution is added into the electrolytic precipitation tank, and an electrochemical reaction is carried out under the action of an electric field to prepare the electrolytic copper foil. The multi-layer plate type filter is used for filtering in the production process, the number of filtering plate pieces can be adjusted as needed, layer-by-layer multi-stage filtration of the electrolyte is achieved, and the loss of the electrolyte is avoided. The purity of the electrolyte is improved through multi-layer filtration, and the performance of the prepared electrolytic copper foil is improved.

Description

technical field [0001] The invention belongs to the field of copper foil production, and relates to a copper foil preparation method and a modification additive for copper foil production. Background technique [0002] As the basic raw material of the electronics industry, electrolytic copper foil can be used to produce copper-clad laminates, and then used to make printed circuit boards. After the dissolved electrolyte is mechanically filtered, the filter instrument currently used is a bag filter, and the electrolyte is pumped into the bag filter. In order to improve the purity of the electrolyte, it is often necessary to filter through multiple filters, not only Increase the cost, and there is a large loss in the electrolyte after passing through multiple filtering instruments, and when using a filter bag, due to the effect of gravity, the solid insoluble matter in the electrolyte is deposited at the bottom of the bag, and the long-term accumulation causes the bottom of the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25D1/04C25D3/38C25D21/06
Inventor 叶敬敏廖平元李建国王俊锋王崇华黄勇
Owner GUANGDONG FINE YUAN SCI TECH CO LTD
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