Graphene-based coating agent

A graphene-based, graphene dispersant technology, applied in the direction of metal material coating process, etc., can solve the problems of weak metal surface bonding force, insufficient surface film-forming performance, etc., and achieves short film-forming time, good film-forming property, The effect of high corrosion resistance

Active Publication Date: 2016-10-12
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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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. The graphene-based coating agent comprises, 0.1-1 part of nano-graphite, 1-3 parts of a graphene dispersing agent, 2-10 parts of fluorine-bearing acid, 2-10 parts of fluorine-bearing acid salt, 1-2 parts of a silane coupling agent, 2-5 parts of a complexing agent, 0-2 parts of a surface wetting agent and 70-95 parts of water. The graphene-based coating agent has the advantages of short film forming time, good film forming property and environment friendliness. An inorganic film formed on the surface of metal through the graphene-based coating agent has excellent lubricity and corrosion resistance and is thin. The formed inorganic nanofilm has excellent conductivity, lubricating property and corrosion resistance and has higher corrosion resistance and longer salt mist time, and therefore corrosion resistance of a metal substrate is better improved, surface impedance of the metal is not influenced after the film is formed, and finish machining of the metal is better facilitated.

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 & Authority Applications(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
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