Composite anti-oxidation coating and preparation method thereof

By constructing a composite antioxidant coating on the surface of copper foil, and utilizing the synergistic effect of L-methionine, 3-amino-1,2-propanediol, inositol hexaphosphate, silane coupling agents, and azole compounds, the problems of poor environmental performance and insufficient performance in copper foil production are solved, achieving high-efficiency antioxidant and corrosion-resistant properties, suitable for the industrial production of high-end electronic copper foil.

CN121319785APending Publication Date: 2026-01-13SHANDONG JINBAO ELECTRONICS
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Patent Information

Application Number
CN202511305200.2
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-09-12
Publication Date
2026-01-13

AI Technical Summary

Technical Problem

Existing copper foil production suffers from poor environmental performance, high water consumption, and insufficient performance of chromium-free technology. Traditional chromium plating processes cause environmental pollution, and the oxide film layer has poor oxidation resistance and salt spray resistance, making it difficult to meet industrial needs.

Method used

A composite antioxidant coating, comprising a first component and a second component, is used to form a dense and uniform passivation film on the copper foil surface through the synergistic effect of L-methionine, 3-amino-1,2-propanediol, inositol hexaphosphate, silane coupling agent, and azole compounds, thereby constructing a three-dimensional cross-linked protective layer and improving antioxidant and corrosion resistance.

Benefits of technology

It achieves a highly environmentally friendly antioxidant effect, significantly reduces water consumption, and improves the antioxidant and salt spray resistance of copper foil, meeting the industrial production needs of high-end electronic copper foil.

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Abstract

The invention belongs to the technical field of copper foil processing, and particularly relates to a composite anti-oxidation coating and a preparation method thereof.The composite anti-oxidation coating is prepared from a first component and a second component; the first component is prepared from the following components in percentage by mass: 0.5 percent to 1 percent of L-methionine, 0.2 percent to 0.26 percent of 3-amino-1, 2-propylene glycol, 0.05 percent to 0.12 percent of inositol hexaphosphate and the balance of solvent ultrapure water; the second component comprises the following components in percentage by mass: 4%-8% of a silane coupling agent and 0.02%-0.04% of an azole compound; the rest component is an alcohol solvent; the mass ratio of the first component to the second component is (3-5): (4-4.5). Through the synergistic effect of multiple components, a composite protective layer with high density, strong adhesive force and low resistance is constructed on the surface of the copper foil, so that an excellent anti-oxidation effect is achieved, the salt mist resistance and the corrosion resistance are also remarkably improved, and the industrial production requirements of high-end electronic copper foils can be met.
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