Single-component graphene zinc powder coating and preparation method thereof

A graphene, one-component technology, used in anti-corrosion coatings, epoxy coatings, coatings, etc.

Inactive Publication Date: 2021-04-23
北京三棵树新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] In order to overcome the problems of high zinc powder content and unstable graphene dispersion in existing heavy-duty anti-corrosion coatings, as well as the disadvantages of heavy-duty anti-corrosion coatings such as cold-sprayed zinc coatings with poor neutral salt spray resistance and poor adhesion due to zinc reduction, this paper The invention provides a single-component graphene zinc powder coating and its preparation method. Through the synergistic effect of graphene, epoxy resin, dispersant and other preferred components in the system and their dosage ratios, graphene microchips and epoxy resin are formed. The resin uniformly dispersed system solves the problem of graphene dispersion and stability. With a very low addition of graphene, an excellent shielding and conductive network can be formed in the coating film, so that the coating can be used at a lower zinc content. It also has excellent anti-corrosion performance and bonding strength, and has the advantages of neutral salt spray resistance and good adhesion

Method used

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  • Single-component graphene zinc powder coating and preparation method thereof
  • Single-component graphene zinc powder coating and preparation method thereof
  • Single-component graphene zinc powder coating and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0034] A kind of one-component graphene zinc powder coating of the present invention is mainly prepared according to the following parts by weight ratio by following components:

[0035]

[0036] Wherein, the solvent is formulated according to the mass ratio of 6:3:1 by xylene, n-butanol and methyl isobutyl ketone or cyclohexanone;

[0037] The graphene is redox graphene or mechanically exfoliated graphene, and the number of layers is ≤10 layers;

[0038] The epoxy resin is a bisphenol A type epoxy resin with a molecular weight of 2500-5500.

[0039] The preparation method of described one-component graphene zinc powder coating mainly comprises the following steps carried out in sequence:

[0040] (1) Start the mixer, and adjust the stirring speed to 200r / min, add the solvent that accounts for 90% of its own weight percentage in the mixer, then add epoxy resin and dispersant in turn, stir until mixed evenly,

[0041] (2) keep the stirring speed of 200r / min, add graphene a...

Embodiment 2

[0045] A kind of one-component graphene zinc powder coating of the present invention is mainly prepared according to the following parts by weight ratio by following components:

[0046]

[0047]

[0048] Wherein, the solvent is formulated according to the mass ratio of 5:3:1 by xylene, n-butanol and methyl isobutyl ketone or cyclohexanone;

[0049] The graphene is redox graphene or mechanically exfoliated graphene, and the number of layers is 4-6 layers;

[0050] The epoxy resin is a bisphenol A type epoxy resin with a molecular weight of 3000-5000.

[0051] The preparation method of described one-component graphene zinc powder coating mainly comprises the following steps carried out in sequence:

[0052] (1) Start the mixer, and adjust the stirring speed to 300r / min, add the solvent accounting for 93.03% of its own weight percentage in the mixer, then add epoxy resin and dispersant in turn, stir until mixed evenly,

[0053] (2) keep the stirring speed of 300r / min, ad...

Embodiment 3

[0057] A kind of one-component graphene zinc powder coating of the present invention is mainly prepared according to the following parts by weight ratio by following components:

[0058]

[0059] Wherein, the solvent is prepared from xylene, n-butanol and methyl isobutyl ketone or cyclohexanone according to the mass ratio of 7:3:1;

[0060] The graphene is redox graphene or mechanically exfoliated graphene, with 4-6 layers.

[0061] The epoxy resin is a bisphenol A type epoxy resin with a molecular weight of 3000-5000.

[0062] The preparation method of described one-component graphene zinc powder coating mainly comprises the following steps carried out in sequence:

[0063] (1) Start the stirrer, and adjust the stirring speed to 250r / min, add the solvent accounting for 92% of its own weight percentage in the stirrer, then add epoxy resin and dispersant in turn, stir until mixed evenly,

[0064] (2) keep the stirring speed of 250r / min, add graphene and anti-sedimentation ...

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Abstract

The invention relates to a single-component graphene zinc powder coating and a preparation method thereof. The single-component graphene zinc powder coating is mainly prepared from the following components in parts by weight. The problems of high zinc powder content and unstable graphene dispersion of the existing heavy anti-corrosion coating are solved, and the defects ofpoor neutral salt mist resistance and poor adhesion of a heavy anti-corrosion coating, such as a cold spraying zinc coating due to zinc reduction can be overcome. Through the synergistic effect of graphene, the super dispersant, other preferred components in the system and the use amount ratio of the other preferred components, the dispersion stability problem of graphene is solved, the cold zinc spraying coating can be replaced, and the advantages of low zinc content, good neutral salt mist resistance and good adhesion can be realized.

Description

technical field [0001] The invention relates to a single-component graphene zinc powder paint and a preparation method thereof, which are applied in the field of heavy-duty anti-corrosion paint production. Background technique [0002] Heavy-duty anti-corrosion coatings refer to a type of anti-corrosion coatings that can be applied in relatively harsh corrosive environments and have a longer protection period than conventional anti-corrosion coatings. The dry film thickness of heavy-duty coatings is generally above 200 μm or above 300 μm, even as high as 500-1000 μm, or as high as 2000 μm. The dry film thickness of conventional anti-corrosion coatings is only about 100 μm or 150 μm. Therefore, the heavy-duty anti-corrosion coating can be used under harsh conditions and has a long anti-corrosion life. [0003] At present, the types of heavy-duty anti-corrosion coatings mainly include hot-dip galvanized, hot-sprayed zinc, cold-sprayed zinc, organic zinc-rich and inorganic zi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D163/00C09D5/10C09D7/61
CPCC08K2003/0893C09D5/106C09D163/00C09D7/61C08K3/08C08K3/042
Inventor 崔定伟张胜军
Owner 北京三棵树新材料科技有限公司
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