Flaky inorganic filler heavy-duty anti-corrosion epoxy composite coating with multi-layer structure

A technology of inorganic fillers and composite coatings, applied in anti-corrosion coatings, epoxy resin coatings, coatings, etc., can solve problems such as cracks or cracks in the coating, reduced corrosion resistance of the coating, and no dispersed stress, etc., to achieve The effect of improving reactivity, maintaining integrity, and improving the ability to resist external stress

Inactive Publication Date: 2021-11-12
ANHUI XINDALU SPECIAL PAINT CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the above technical solution, by filling the pores of the joints between the glass flakes and the scales with graphene, although the structural compactness of the glass flakes is effectively improved when they are stacked layer by layer, the shielding ability of the glass flakes is enhanced, thereby The coating has excellent corrosion resistance, but the dense structure formed by layered layers of glass flakes has good rigidity and does not have the effect of dispersing stress. Under the influence of external factors, the coating is prone to cracks or cracks, resulting in The coating will produce large defects during the corrosion process, which will reduce the corrosion resistance of the coating and cannot meet the demand

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] A kind of lamellar inorganic filler heavy anticorrosion epoxy composite coating of multi-layer structure, described epoxy composite coating is made with the mass ratio of 3:1 by component A and component B;

[0055] The component A includes the following raw materials in parts by weight: 55 parts of bisphenol A epoxy resin E44, 23 parts of butyl glycidyl ether, 0.5 parts of graphene, 6 parts of flake inorganic filler, airgel nano powder 2 parts, defoamer BYK-024 0.35 parts;

[0056] The component B is T31 curing agent;

[0057] The preparation method of described flaky inorganic filler comprises the steps:

[0058] 1) Weigh 20g of dehydrated glass flakes with a particle size of 40 mesh and pour them into a container, add 300mL of dehydrated xylene and 0.05g of stannous octoate, stir and disperse at a high speed of 800r / min for 20min at room temperature, and then weigh 10g of hexaethylene Methyl diisocyanate is dispersed in a beaker containing 100mL of dehydrated xylen...

Embodiment 2

[0067] A kind of lamellar inorganic filler heavy anticorrosion epoxy composite coating of multi-layer structure, described epoxy composite coating is made with the mass ratio of 3:1.2 by component A and component B;

[0068] The component A includes the following raw materials in parts by weight: 60 parts of bisphenol A epoxy resin E44, 25 parts of butyl glycidyl ether, 0.5-0.87 parts of graphene, 10 parts of flake inorganic filler, airgel nano 5 parts of powder, 0.45 parts of defoamer BYK-024;

[0069] The component B is T31 curing agent;

[0070] The preparation method of described flaky inorganic filler comprises the steps:

[0071] 1) Weigh 25g of dehydrated glass flakes with a particle size of 100 mesh and pour them into a container, add 400mL of dehydrated xylene and 0.1g of stannous octoate, stir and disperse at a high speed of 1000r / min for 25min at room temperature, and then weigh 13g of hexaethylene Methyl diisocyanate is dispersed in a beaker containing 120mL of d...

Embodiment 3

[0080] A kind of lamellar inorganic filler heavy anticorrosion epoxy composite paint of multilayer structure, described epoxy composite paint is made with the mass ratio of 3:1.4 by component A and component B;

[0081] The component A includes the following raw materials in parts by weight: 68 parts of bisphenol A epoxy resin E44, 29 parts of butyl glycidyl ether, 0.8 parts of graphene, 15 parts of flake inorganic filler, 6 parts of airgel nano powder parts, defoamer BYK-024 0.55 parts;

[0082] The component B is T31 curing agent;

[0083] The preparation method of described flaky inorganic filler comprises the steps:

[0084] 1) Weigh 30g of dehydrated glass flakes with a particle size of 150 mesh and pour them into a container, add 450mL of dehydrated xylene and 0.15g of stannous octoate, stir and disperse at a high speed of 1200r / min for 30min at room temperature, and then weigh 15g of hexaethylene Methyl diisocyanate is dispersed in a beaker containing 150mL of dehydrate...

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Abstract

The invention discloses a flaky inorganic filler heavy-duty anti-corrosion epoxy composite coating with a multi-layer structure, and relates to the technical field of anti-corrosion coatings. The heavy-duty anti-corrosion epoxy composite coating is prepared from a component A and a component B according to a mass ratio of 3:(1.0-1.4). The component A is prepared from the following raw materials in parts by weight: 55 to 68 parts of bisphenol A type epoxy resin E44, 23 to 29 parts of butyl glycidyl ether, 0.5 to 0.8 part of graphene, 6 to 15 parts of flaky inorganic filler, 2 to 6 parts of aerogel nano powder and 0.35 to 0.55 part of a de-foaming agent. The component B is a T31 curing agent. According to the invention, the sheet-shaped inorganic filler and the aerogel nanopowder are added into the epoxy resin, and the flaky inorganic filler and the aerogel nanopowder can coexist in the epoxy resin and can be laid layer by layer in the epoxy resin to form a compact elastic barrier, thus the external stress resistance of the epoxy composite coating is improved, and the coating does not easily generate gaps or cracks, so that the structural integrity of the coating can be maintained, and the epoxy resin has excellent corrosion resistance.

Description

technical field [0001] The invention belongs to the technical field of anti-corrosion coatings, and in particular relates to a multi-layer structure sheet-like inorganic filler heavy-duty anti-corrosion epoxy composite coating. Background technique [0002] In the high-salt and high-humidity environment of the ocean, metal substrates face many environmental tests such as seawater immersion, salt spray erosion, alternating wet and dry, and alternating pressure, which can easily cause corrosion and damage the original metal structure. Applying heavy-duty anti-corrosion coatings to marine equipment can effectively improve its anti-corrosion ability, and it is also a widely used anti-corrosion method at present. The existing zinc-rich and other heavy-duty anti-corrosion coatings have problems such as low filler usage, serious pollution, and poor construction performance, which need to be solved urgently. [0003] For example, Chinese patent CN2018103527486 discloses a solvent-f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D163/02C09D5/08C09D7/62C09D7/61C09D7/65
CPCC09D163/00C09D5/08C09D7/62C09D7/61C09D7/65C09D7/70C08L87/00C08L79/04C08K3/042C08K9/04C08K7/00C08K3/40
Inventor 王保军拾振洪李海洋金传亮回留柱王家振
Owner ANHUI XINDALU SPECIAL PAINT CO LTD
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