A graphene-based coating agent

A graphene-based and graphene dispersant technology, which is applied in the coating process of metal materials, etc., can solve the problems of insufficient film-forming performance on the surface and weak bonding force on the metal surface, and achieve short film-forming time, simple and diverse operations, and improved The effect of corrosion resistance

Active Publication Date: 2019-01-15
苏州禾川化学技术服务有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, although the new type of coating agent can basically meet the requirements of industrial applications, because the formed coating is an inorganic nano-material, the binding force with the metal surface is weak, and it has the defect of insufficient surface film-forming performance.

Method used

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  • A graphene-based coating agent
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Prepare material A and material B respectively in parts by mass.

[0039] 1) Material A:

[0040]

[0041] 2) Material B

[0042] Monolayer graphene oxide 0.1 parts

[0043] 1 part polyvinyl alcohol

[0044] 30 parts of water

[0045] 3) Mix material A and material B evenly to make the graphene-based coating agent of the present invention.

[0046] Dilute the graphene-based coating agent 20 times with water for use.

[0047] Clean the surface of the aluminum alloy with an acidic or neutral cleaning solution to remove oil and dust on the surface of the aluminum alloy; then clean other impurities remaining on the surface of the aluminum alloy with water; directly soak the aluminum alloy in the diluent of the graphene-based coating agent, The temperature is room temperature, the drying time is about 2 minutes, and it is dried at 80-120°C, or it can be dried at room temperature.

Embodiment 2

[0049] Prepare material A and material B respectively in parts by mass.

[0050] 1) Material A:

[0051]

[0052] 2) Material B

[0053] Few-layer graphene oxide 0.3 parts

[0054] Sodium polyacrylate 2 parts

[0055] 30 parts of water

[0056] 3) Mix material A and material B evenly to make the graphene-based coating agent of the present invention.

[0057] Dilute the graphene-based coating agent 15 times with water for use.

[0058] First clean the surface of the steel parts with an acidic or neutral cleaning solution to remove oil and dust on the surface of the steel parts; then clean other impurities remaining on the surface of the steel parts with water; soak the steel parts directly in the graphene-based coating agent dilution, The temperature is room temperature, the drying time is about 2 minutes, and it is dried at 80-120°C, or it can be dried at room temperature.

Embodiment 3

[0060] Prepare material A and material B respectively in parts by mass.

[0061] 1) Material A:

[0062]

[0063]

[0064] 2) Material B

[0065] Few-layer graphene oxide 0.3 parts

[0066] 2 parts polyacrylamide

[0067] 20 parts of water

[0068] 3) Mix material A and material B evenly with the graphene-based coating agent of the present invention.

[0069] Dilute the graphene-based coating agent 20 times with water for use.

[0070] Clean the surface of the aluminum alloy with an acidic or neutral cleaning solution to remove oil and dust on the surface of the aluminum alloy; then clean other impurities remaining on the surface of the aluminum alloy with water; directly soak the aluminum alloy in the diluent of the graphene-based coating agent, The temperature is room temperature, the drying time is about 2 minutes, and it is dried at 80-120°C, or it can be dried at room temperature.

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Abstract

The invention discloses a graphene-based coating agent, which is composed of: 0.1-1 parts of nano-graphene, 1-3 parts of graphene dispersant, 2-10 parts of fluoric acid, 2-10 parts of fluoric acid salt, 1-2 parts of silane coupling agent, 2-5 parts of complexing agent, 0-2 parts of surface wetting agent, 70-95 parts of water. The invention has the advantages of short film-forming time, good film-forming property and environmental protection. The inorganic film formed on the metal surface by the present invention has excellent lubricity, corrosion resistance, thin film layer, and the formed inorganic nano-film has excellent electrical conductivity, Lubricating performance and corrosion resistance, with higher corrosion resistance and salt spray time, so as to better improve the corrosion resistance of metal substrates, and after film formation, it will not affect the surface impedance of the original metal, which is more conducive to metal finishing .

Description

technical field [0001] The invention belongs to the technical field of metal surface treatment, in particular to a graphene-based coating agent. Background technique [0002] Graphene is a two-dimensional carbon film with a thickness of only one atom. It is the only material composed of a single layer of atoms discovered so far. A semi-metallic material, in which the Fermi level density of electrons is 0, when a metal or other material is doped with a small amount of graphene, its performance will be greatly improved. [0003] Steel parts, zinc materials and aluminum materials usually need to be pre-treated before painting, including oil removal, rust removal and other processes. Chemical pre-treatment methods usually also form a chemical conversion film on the surface of the metal. The conversion film is both It has a certain anti-corrosion ability, which can prevent the parts from returning to rust in a short period of time before spraying, and can also increase the surfa...

Claims

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Application Information

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Patent Type & AuthorityPatents(China)
IPC IPC(8): C23C22/34
CPCC23C22/34C23C2222/20
Inventor景欣欣窦和琴王婷婷陈珍珍杜威劲
Owner苏州禾川化学技术服务有限公司