Two-component graphene heavy-duty anti-corrosive coating material and preparation method thereof

A graphene, heavy-duty anti-corrosion technology, applied in anti-corrosion coatings, epoxy resin coatings, coatings, etc., can solve the problems of low wet adhesion of coatings, easy sedimentation of epoxy zinc-rich coatings, etc., to improve wet adhesion, Excellent electrochemical anti-corrosion performance, improving the effect of anti-settling

Inactive Publication Date: 2019-05-14
SHENZHEN GRAPHENE LAND LEGEND TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to provide a two-component graphene heavy-duty anti-corrosion coating and a preparation method thereof, aiming at solving the problem of easy sedimentation of the epoxy zinc-rich coating due to the high content of zinc powder when the zinc powder is used to prepare the heavy-duty anti-corrosion coating, and the wet adhesion of the coating. low effort problem

Method used

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  • Two-component graphene heavy-duty anti-corrosive coating material and preparation method thereof
  • Two-component graphene heavy-duty anti-corrosive coating material and preparation method thereof
  • Two-component graphene heavy-duty anti-corrosive coating material and preparation method thereof

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preparation example Construction

[0045] And, the embodiment of the present invention also provides a kind of preparation method of two-component graphene heavy-duty anticorrosion coating, comprises the following steps:

[0046] (1) Preparation of component A:

[0047] (11) Put the graphene, dispersant, silane coupling agent, and first solvent in the amount of component A formula in a stirring container, and stir at a speed of 500 to 2000 r / min with a high-speed disperser to obtain a graphene dispersion .

[0048] Through this step, the silane coupling agent is compounded with the polymer dispersant to form an amphiphilic dispersant, which can effectively disperse the graphene in the first solvent, which is beneficial to prevent the agglomeration of the graphene nanopowder. Preferably, the stirring time is 10-30min.

[0049] (12) Add epoxy resin to the graphene dispersion, and continue stirring at a speed of 500-2000 r / min for 10-30 min to obtain a graphene resin slurry.

[0050] In this step, under the syn...

Embodiment 1

[0060] A two-component graphene zinc powder heavy-duty anti-corrosion coating, the A component includes the following raw materials by weight: 1.3 parts of graphene, 12 parts of flake zinc powder, 18 parts of spherical zinc powder, 24 parts of epoxy resin, dispersed 1 part of antifoaming agent, 1.2 parts of polyamide wax, 0.5 part of defoamer, 3 parts of titanium dioxide, 5 parts of talcum powder, 12 parts of composite zinc phosphate, 0.4 part of organic bentonite, 0.4 part of fumed silica, and 21.2 parts of the first solvent; The B component includes the following raw materials in parts by weight: 66 parts of polyamide 650, 2 parts of DMP-30, and 32 parts of the second solvent.

[0061] The preparation method of described two-component graphene zinc powder heavy-duty anticorrosion coating comprises the following steps:

[0062] (1) The preparation method of the A component is as follows:

[0063] (11) Put the graphene, dispersant, silane coupling agent, and first solvent of ...

Embodiment 2

[0071] A two-component graphene zinc powder heavy-duty anti-corrosion coating, the A component includes the following raw materials by weight: 1 part of graphene, 16 parts of flake zinc powder, 20 parts of spherical zinc powder, 24 parts of epoxy resin, dispersed 0.8 parts of polyamide wax, 0.5 parts of defoamer, 4 parts of talcum powder, 6 parts of composite zinc phosphate, 6 parts of aluminum tripolyphosphate, 0.5 parts of organic bentonite, 20.2 parts of the first solvent; the B component , including the following raw materials by weight: 66 parts of polyamide 125, 2 parts of DMP-30, and 32 parts of the second solvent.

[0072] The preparation method of the two-component graphene zinc powder heavy-duty anti-corrosion coating is the same as in Example 1.

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Abstract

The invention provides a two-component graphene heavy-duty anti-corrosive coating material, which comprises a component A and a component B, wherein the two-component graphene heavy-duty anti-corrosive coating material comprises the following components in percentage by weight based on 100% of the total weight of the component A: 0.2-2wt% of graphene; 10-30wt% of epoxy resin; 20-50wt% of zinc powder; 0.5-3wt% of a dispersant; 0.5-4wt% of an anti-settling agent; 0.2-1wt% of a defoaming agent; 0.2-2 wt% of a silane coupling agent; 0.3-2wt% of a thickener; 10-20wt% of a pigment filler; and 10-20wt% of a first solvent, wherein the zinc powder is a mixture of spherical zinc powder and flaky zinc powder; and the coating material comprises the following components in percentage by weight based on100% of the total weight of the component B: 50-75% of a curing agent; 1-5wt% of a curing accelerator; and 20-50wt% of a second solvent.

Description

technical field [0001] The invention belongs to the technical field of heavy-duty anti-corrosion coatings, in particular to a two-component graphene heavy-duty anti-corrosion coating and a preparation method thereof. Background technique [0002] Epoxy zinc-rich coating is a heavy-duty anti-corrosion coating with excellent corrosion resistance, which is widely used in various fields of industrial anti-corrosion. The anti-corrosion mechanism of epoxy zinc-rich coatings is mainly the electrochemical protection of zinc. Generally, when zinc-rich coatings play the role of cathodic protection, the dry film must contain a large amount of zinc powder particles, which is enough to make the gap between zinc powder And the degree of point contact between the zinc powder and the substrate. However, if the content of zinc powder in the coating is too high, it is easy to cause the coating to be porous, and the adhesion, flexibility and impact strength will decrease. [0003] On the oth...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D163/00C09D5/10
Inventor 孙学栋
Owner SHENZHEN GRAPHENE LAND LEGEND TECH CO LTD
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