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Water-based dip-coating graphene air-drying coating and preparation method thereof

A self-drying coating and graphene technology, applied in anti-corrosion coatings, coatings, etc., can solve problems such as poor water resistance, salt spray resistance time, limiting the development of water-based coatings, and difficult anti-corrosion performance, achieving improved scratch resistance. Anti-sedimentation performance, effect of improving anti-corrosion performance

Inactive Publication Date: 2020-04-21
上海缔朴水性涂料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, the current commercially available water-based anti-corrosion coatings are difficult to compete with solvent-based coatings in terms of anti-corrosion performance, poor water resistance, and salt spray resistance time is less than half of solvent-based coatings, which severely limits the development of water-based coatings

Method used

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  • Water-based dip-coating graphene air-drying coating and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] A water-based dip coating graphene self-drying coating, the water-based self-drying coating is: styrene-acrylic emulsion 56.5%, alcohol ether film-forming aid 9.5%, polysiloxane defoamer 1.0%, acrylic acid Leveling agent 1.0%, unsaturated polycarboxylic acid polymer 1.0%, graphene 5.0%, epoxy silane modified pigment 2.0%, acetylenic alcohol-based water-based metal slow-release anti-flash rust agent 2.0%, polyacrylic acid enhancer Thickener 2.0%, water 20.0%.

[0034] A kind of preparation method of aqueous dip coating graphene self-drying coating, comprises the steps:

[0035] (1) Premix unsaturated polycarboxylic acid polymer, polysiloxane defoamer, alcohol ether film-forming aid with water, and then add graphene to high-speed dispersion pulping;

[0036] (2) Grinding the slurry obtained in step (1) through a sand mill to a fineness below 15 μm;

[0037] (3) The slurry obtained in step (2) and other additives are added to the styrene-acrylic emulsion under stirring t...

Embodiment 2

[0042] A water-based dip coating graphene self-drying coating, the water-based self-drying coating is: styrene-acrylic emulsion 66.0%, alcohol ester twelve film-forming aids 6.8%, polyether defoamer 0.5%, fluorocarbon 0.7% leveling agent, 0.4% modified acrylic block copolymer, 2.8% graphene, 0.8% epoxy silane modified pigment, 1.7% acetylenic alcohol-based water-based metal slow-release anti-flash rust agent, polyurethane thickener Thickener 0.8%, water 19.5%.

[0043] A kind of preparation method of aqueous dip coating graphene self-drying coating, comprises the steps:

[0044] (1) Premix the modified acrylic acid block copolymer, polyether defoamer, alcohol ester twelve film-forming aids with water, and then add graphene for high-speed dispersion pulping;

[0045] (2) Grinding the slurry obtained in step (1) through a sand mill to a fineness below 15 μm;

[0046] (3) The slurry obtained in step (2) and other additives are added to the styrene-acrylic emulsion under stirrin...

Embodiment 3

[0051] A water-based dip-coating graphene self-drying coating, the water-based self-drying coating is: 70.0% of styrene-acrylic emulsion, 2.2% of alcohol ether film-forming aids, 0.4% of polyether modified polysiloxane defoamer according to mass percentage %, silicone leveling agent 0.5%, modified acrylic block copolymer 0.8%, graphene 4.0%, epoxy silane modified pigment 2.5%, acetylenic alcohol-based water-based metal slow-release anti-flash rust agent 0.9% , Polyoxyethylene thickener 1.5%, water 17.2%.

[0052] A kind of preparation method of aqueous dip coating graphene self-drying coating, comprises the steps:

[0053] (1) Premix the modified acrylic block copolymer, polyether-modified polysiloxane defoamer, and alcohol ether film-forming aid with water, and then add graphene for high-speed dispersion and pulping;

[0054] (2) Grinding the slurry obtained in step (1) through a sand mill to a fineness below 15 μm;

[0055] (3) The slurry obtained in step (2) and other add...

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Abstract

The invention discloses a water-based dip-coating graphene air-drying coating and a preparation method thereof. The water-based air-drying coating comprises, by mass, 50-70% of a styrene-acrylic emulsion, 2-10% of a coalescing agent, 0-1% of an antifoaming agent, 0-1% of a leveling agent, 0-1% of a dispersing agent, 1-5% of graphene, 0.5-3% of a liquid antirust pigment, 0-2% of an anti-flash-rustagent, 0-2% of a thickener, and the balance of water. The anti-settling performance of the dip-coating coating in a low-viscosity state is improved; the corrosion resistance of a film formed by the coating is improved, the film which is dried at normal temperature or forcibly dried at low temperature is adopted, and the neutral salt spray test can reach 200 h or above at the thickness of 20-30 [mu]m; and the hardness and the scratch resistance of the film are improved, the pencil hardness reaches F or above, and the scratch resistance is obviously improved. Therefore, the water-based dip-coating graphene air-drying coating provided by the invention has great application values.

Description

Technical field [0001] The invention belongs to the technical field of chemical water-based coatings, and specifically relates to a water-based dipping graphene self-drying coating and a preparation method thereof. Background technique [0002] Coating, the traditional name in China is paint. The so-called coating is coated on the surface of an object to be protected or decorated, and can form a continuous film that is firmly adhered to the object to be coated. It is usually based on resin, oil, or emulsion, with or without the addition of pigments, fillers, and Corresponding additives are viscous liquids prepared with organic solvents or water. [0003] With the implementation of national environmental protection policies, various provinces and cities across the country have introduced VOC emission limits and charging standards. The coating industry and coating processes have begun to develop towards low pollution, and water-based coatings are increasingly emerging. The u...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D125/14C09D5/08C09D7/45
CPCC09D5/08C09D125/14C09D7/45C08K3/042
Inventor 汤大炜顾明远台明
Owner 上海缔朴水性涂料有限公司
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