A metal protective layer based on copper oxide nanowires

A copper oxide nanowire, metal protective layer technology, applied in anodizing, coating, anti-corrosion coating and other directions, can solve the problem of accelerated corrosion rate, etc., to enhance catalytic oxidation, reduce porosity, and enhance corrosion resistance. Effect

Active Publication Date: 2019-03-12
江苏裕铭铜业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, due to the inherent porosity of the polyaniline coating and the problem of accelerated local corrosion after the coating is damaged, it cannot be used as a perfect physical barrier to block the intrusion of corrosive media, so it is necessary to dope polyaniline with inorganic particles. Or prepare composite coating materials to improve the corrosion resistance of polyaniline materials

Method used

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  • A metal protective layer based on copper oxide nanowires

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] The preparation process of the metal protective layer is:

[0031] Step 1, cleaning the copper substrate 11

[0032] Cut the copper plate base into the required size, sand it evenly with 400-mesh, 800-mesh, and 1200-mesh sandpaper in turn, ultrasonically clean it in isopropanol for 15 minutes, and then clean it with deionized water.

[0033] Step 2, preparing the middle layer 12

[0034] Place the above-mentioned copper plate substrate after ultrasonic cleaning as an anode, graphite as a cathode, and a KOH solution with a concentration of 2mol / L as an electrolyte, add a small amount of polyvinyl alcohol, and 2 Oxidation was carried out under the current density, and after 30 minutes, the copper plate substrate was taken out, rinsed repeatedly with deionized water, and then dried naturally;

[0035] The above-obtained copper plate substrate was put into a muffle furnace, firstly calcined at 150° C. for 2 h, then calcined at 300° C. for 3 h, and after natural cooling, cop...

Embodiment 2

[0041] The specific steps are as in Example 1, the difference is that the filler in the polyaniline film is Mn 2 O 3 porous microspheres.

[0042] For the metal protective layer obtained in the above steps, the corrosion resistance test is carried out. The test medium is 3.5% NaCl solution, and the sample is sealed with epoxy resin, and the exposed area is 3cm 2 , using the traditional three-electrode system to conduct corrosion resistance tests, it is shown that the metal protection layer of the present application has good corrosion resistance and can effectively protect the metal substrate and reduce the impact of corrosion.

Embodiment 3

[0044] The specific steps are as in Example 1, the difference is that the filler in the polyaniline film is TiO 2 Nanoparticles.

[0045] For the metal protective layer obtained in the above steps, the corrosion resistance test is carried out. The test medium is 3.5% NaCl solution, and the sample is sealed with epoxy resin, and the exposed area is 3cm 2 , using the traditional three-electrode system to conduct corrosion resistance tests, it is shown that the metal protection layer of the present application has good corrosion resistance and can effectively protect the metal substrate and reduce the impact of corrosion.

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Abstract

The invention relates to a metal protecting layer based on copper oxide nanowires. The metal protecting layer comprises a copper plate substrate, a middle layer with the copper oxide nanowires growing vertically on the copper plate substrate, and a polyaniline film coated on a copper oxide nanowire thin film of the middle layer. Filler is added into the polyaniline film, and the filler refers to a mixture of Mn2O3 porous micro-spheres and TiO2 nano particles.

Description

technical field [0001] The present application relates to the field of metal protection, in particular to a metal protection layer based on copper oxide nanowires. Background technique [0002] Metal corrosion is due to the contact between easily corroded metals and the surrounding aggressive media, chemical or electrochemical interactions occur between each other, changing the original stable state of the metal, and generating new compounds at the reflection interface, which can trigger physical and chemical reactions of metal materials. , The process of changing mechanical properties, the corrosion process is a spontaneous process. Statistics show that 30-40% of the losses caused by metal corrosion can be avoided through effective protective measures. Therefore, metal protection issues have been paid more and more attention. [0003] At present, there are two main methods of metal anticorrosion: 1) using metal and its alloy materials that are not easy to react with the su...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25D11/34C09D179/02C09D5/08C08G73/02
CPCC08G73/0266C08K7/24C08K2003/2241C08K2201/011C09D5/08C09D7/61C09D7/70C09D179/02C25D11/34
Inventor 不公告发明人
Owner 江苏裕铭铜业有限公司
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