Nano graphene fragment modified corrosion-resistant coating and preparation method thereof

A technology of nano-graphene and anti-corrosion coatings, applied in the direction of anti-corrosion coatings, coatings, etc., can solve the problems of complex coating formulations and narrow application ranges of coatings, and achieve the effects of good filling effect, low cost, and simple preparation methods

Active Publication Date: 2015-07-22
WUHAN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although these patented technologies involve graphene, the size of graphene is not limited, and the coating formula is complex, and the scope of application of the coating is narrow. For example, some are only suitable for marine environments, and some are only suitable for high-temperature environments.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] An anti-corrosion coating modified by nanometer graphene fragments and a preparation method thereof. The chemical composition and content thereof of the anticorrosion coating are: 20-35wt% film-forming agent, 25-30wt% solvent, 10-20wt% nano-graphene fragments, 7-10wt% pigment, and 6-10wt% filler %, additives are 10~20wt%.

[0030] Dosing according to the chemical composition and content of the coating, and then ultrasonically dispersing for 5-10 minutes to obtain the anti-corrosion coating modified by nano-graphene fragments.

[0031] In this embodiment: the film-forming agent is polyetherimide; the solvent is nitrogen methyl pyrrolidone; the pigment is titanium dioxide; the filler is aluminum powder; butyl ester.

Embodiment 2

[0033] An anti-corrosion coating modified by nanometer graphene fragments and a preparation method thereof. Except following chemical composition, all the other are with embodiment 1.

[0034] In this embodiment: the film-forming agent is polyurethane; the solvent is water; the pigment is toluidine red; the filler is glass flakes; the auxiliary agent is BYK-306.

Embodiment 3

[0036] An anti-corrosion coating modified by nanometer graphene fragments and a preparation method thereof. Except following chemical composition, all the other are with embodiment 1.

[0037] In this embodiment: the film-forming agent is a mixture of epoxy resin and phenol-formaldehyde resin; the solvent is a mixture of n-butanol and butyl acetate; the pigment is lead chrome yellow; the filler is titanium dioxide powder; The auxiliary agent is a mixture of dithiocarbamate and methyl ethyl ketone oxime.

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Abstract

The invention relates to a nano graphene fragment modified corrosion-resistant coating and a preparation method thereof. The invention adopts the technical scheme as follows: the corrosion-resistant coating comprises the following chemical components in percentage by weight: 20-80% of a film-forming agent, 10-30% of a solvent, 0.1-20% of nano graphene fragments, 1-10% of pigments, 1-10% of filler and 1-20% of auxiliaries. The preparation method comprises the following steps: proportioning the chemical components of the corrosion-resistant coating in percentage by weight; then carrying out ultrasonic dispersion for 5-20 minutes so as to obtain the nano graphene fragment modified corrosion-resistant coating. The nano graphene fragment modified corrosion-resistant coating and the preparation method provided by the invention have the characteristics of being simple in process and low in cost and the prepared nano graphene fragment modified corrosion-resistant coating is good in corrosion-resistant effect and wide in application range.

Description

technical field [0001] The invention belongs to the technical field of anticorrosion coatings. In particular, it relates to an anti-corrosion coating modified by nanometer graphene fragments and a preparation method thereof. Background technique [0002] The quasi-two-dimensional structure of graphene has unique physical, chemical and biological properties, attracting the attention of scientists in various fields such as materials, and has been widely used in super conductive films, sensors, high-performance electronic devices and energy storage materials. [0003] Graphene also has great potential in the field of anticorrosion of metal materials. First, the stable sp2 hybrid structure of graphene enables it to form a physical barrier between the metal and the active medium, preventing the diffusion and penetration of gas or liquid molecules. Bunch and others found that graphene can effectively hinder the passage of gas atoms when studying graphene to prepare tiny seale...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D7/12C09D5/08
CPCC08K3/04C08K2201/011C09D5/08C09D5/103C09D7/61C09D7/67C09D7/68
Inventor 黄飞黄峰蒋涛明刘静甘章华
Owner WUHAN UNIV OF SCI & TECH
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