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Graphene heat-conducting anticorrosive water-based paint, and preparation and application methods thereof

A water-based coating and graphene technology, applied in anti-corrosion coatings, coatings, etc., can solve the problems of poor corrosion protection, large pollution, and narrow application range of coatings, so as to avoid environmental pollution, expand application range, and improve corrosion protection performance. Effect

Active Publication Date: 2017-02-01
北京石墨烯技术研究院有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, the Chinese patent CN 103627223A combines graphene with nano-diamonds and metal fibers to prepare a graphene heat-conducting coating. The disadvantage is that the system is a solvent-based coating, and the pollution is relatively large.
Chinese patent CN104693968A uses graphene, carbon nanotubes, graphite oxide, fullerene, and carbon nanocages as functional fillers, and water-based resins as binders to solve the heat dissipation problem of electronic components, but the corrosion protection of the coating is poor, and the scope of application narrower

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0017] The preparation method of graphene heat-conducting anticorrosion water-based coating as described above, it is characterized in that, the step of preparation is as follows:

[0018] 1. Prepare component I:

[0019] 1.1. Preparation of graphene dispersion: Weigh graphene oxide, amino acid modified graphene or silane modified graphene and deionized water according to the concentration ratio, mix and ultrasonically disperse at 100W~150W for 30min~60min to obtain graphite olefin dispersion;

[0020] 1.2. Ingredients: Weigh water-soluble amines, additives, graphene dispersions and fillers in proportion;

[0021] 1.3. Grinding: Add graphene dispersion, additives and fillers to the water-soluble amine, stir manually for at least 1 minute, then put it into a sand mill and grind until the fineness is lower than 40 μm, and then discharge to obtain component I;

[0022] 2. Mix Component I and Component II: Weigh Component I and Component II in proportion, then mix them, and stir...

Embodiment 1

[0028] 1. Preparation of graphene dispersion: Weigh 1 g of graphene oxide and 1000 g of deionized water respectively, mix them and disperse them by ultrasonic wave at 100 W power for 60 minutes to obtain graphene dispersion.

[0029] 2. Ingredients: Weigh 30g of water-soluble amine, 1g of ammonium salt dispersant, 0.3g of polysiloxane defoamer, 0.3g of acrylic wetting agent, 0.4g of polyurethane thickener, 40g of graphene dispersion, and 12g of sericite , talcum powder 8g, boron nitride 4g and basic zinc phosphate 4g;

[0030] 3. Grinding: Add ammonium salt dispersant, polysiloxane defoamer, acrylic wetting agent, polyurethane thickener, graphene dispersion, sericite, talcum powder, boron nitride and basic phosphoric acid to water-soluble amine Zinc, stirred by hand for 5 minutes, then put into a sand mill to grind until the fineness reaches 40 μm, and then discharge to obtain component Ⅰ;

[0031] 4. Weigh 100g of component I and 58g of bisphenol A epoxy resin emulsion and m...

Embodiment 2

[0038] 1. Preparation of graphene dispersion: Weigh 5 g of amino acid-modified graphene and 1000 g of deionized water respectively, and after mixing, ultrasonically disperse for 30 minutes at a power of 150 W to obtain a graphene dispersion.

[0039] 2. Ingredients: Weigh 30g of water-soluble amine, 1.5g of ammonium salt dispersant, 0.3g of polysiloxane defoamer, 0.2g of acrylic wetting agent, 1g of polyurethane thickener, 30g of graphene dispersion, and 20.6g of sericite g, talcum powder 8.2g, boron nitride 4.1g and basic zinc phosphate 4.1g;

[0040] 3. Grinding: Add ammonium salt dispersant, polysiloxane defoamer, acrylic wetting agent, polyurethane thickener, graphene dispersion, sericite, talcum powder, boron nitride and basic phosphoric acid to water-soluble amine Zinc, stirred by hand for 3 minutes, and then put into a sand mill to grind until the fineness reaches 40 μm and discharge to obtain component Ⅰ;

[0041] 4. Weigh 100g of component I and 65g of bisphenol A ep...

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Abstract

The invention belongs to a surface treatment technique, and relates to a graphene heat-conducting anticorrosive water-based paint, and preparation and application methods thereof. The invention is characterized in that the graphene heat-conducting anticorrosive water-based paint is formed by mixing a component I and a component II in a weight ratio of 100:(58-65). The preparation method comprises the following steps: preparing the component I; and mixing the component I and component II. The application method comprises the following steps: substrate pretreatment; coating; and curing. The graphene heat-conducting anticorrosive water-based paint avoids environment pollution, and has the advantages of higher anticorrosive property and wider application range.

Description

technical field [0001] The invention belongs to the surface treatment technology, and relates to a graphene heat-conducting and anti-corrosion water-based coating and a preparation and application method thereof. Background technique [0002] Thermally conductive anti-corrosion coating is a kind of metal surface coating widely used in heat exchangers and other industrial equipment. To ensure the normal operating temperature of the equipment, it has a wide range of uses. Most of the coatings are mixed systems with organic polymers as film-forming substances. The coatings after coating are mainly organic substances and have low thermal conductivity. They mainly rely on the inorganic fillers in them to perform the function of heat conduction. Graphene is a material with rapid research progress in recent years. Due to its two-dimensional structure, it exhibits excellent electrical, thermal, and mechanical properties. Due to its size effect and ultra-high specific surface area, ...

Claims

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Application Information

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IPC IPC(8): C09D1/00C09D5/08C09D7/12
CPCC09D1/00C09D5/08C09D7/61C09D7/63C09D7/65
Inventor 李静关振威王唯艾秋实
Owner 北京石墨烯技术研究院有限公司
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