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Graphene oxide modified water-based epoxy anticorrosive paint

A graphene-modified, water-based epoxy technology, which is applied in the direction of anti-corrosion coatings, epoxy resin coatings, coatings, etc., can solve the problems of easy agglomeration of single-layer graphene oxide, decreased wet adhesion of coatings, and failure to meet the size requirements, etc. problem, to achieve the effects of short dispersion time, reduced impact, improved corrosion resistance and impact resistance

Inactive Publication Date: 2017-03-15
上海碳源汇谷新材料科技有限公司
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Problems solved by technology

[0003] The present invention aims at the fact that the size of graphene oxide used in the prior art cannot meet the requirements, and graphene oxide is not completely single layer, or single layer graphene oxide is very easy to agglomerate under the action of common water-based paint additives, reducing or losing shielding effect, and may also cause adverse effects such as the decrease of wet adhesion of the coating. A graphene oxide modified waterborne epoxy anti-corrosion paint can significantly improve the impact resistance and anti-corrosion performance while maintaining the adhesion of the coating. Optimum, the hardness reaches 4H, which meets the mechanical properties of the coating

Method used

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  • Graphene oxide modified water-based epoxy anticorrosive paint

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Embodiment Construction

[0031] The following examples relate to the method for preparing the above-mentioned graphene-modified water-based epoxy anticorrosion paint, specifically comprising the following steps:

[0032] Step 1: Disperse single-layer graphene oxide in deionized water: add deionized water to the graphene oxide slurry or powder, ultrasonically stir and disperse for 20 minutes.

[0033] Step 2: Mix the water-based epoxy resin composite formula in proportion and disperse with high-speed stirring until the fineness is less than 30 μm.

[0034] Step 3: Mix the dispersed water-based epoxy resin compound formula with the water-based epoxy resin curing agent and use it up within 4 hours.

[0035] The waterborne epoxy resin composite formula in this embodiment is made up of the following raw materials in parts by weight: 0.2 parts of coupling agent, 0.3 parts of wetting and dispersing agent, 33 parts of fillers (wherein wollastonite powder accounts for 18 parts, mica powder accounts for 3 parts...

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Abstract

Disclosed is a graphene oxide modified water-based epoxy anticorrosive paint. The graphene oxide modified water-based epoxy anticorrosive paint is composed of paint modifying single-layer graphene oxide, water-based epoxy resin, rust-resisting pigment, filling, assistant water-based epoxy resin compound formula and water-based epoxy resin curing agent, wherein the single-layer graphene oxide is of a flake-shaped structure, which is 0.8-1.2 nm thick, and the inside of the layer is a hexagonal structure formed by carbon atom sp2 hybrid orbits. The graphene oxide modified water-based epoxy anticorrosive paint can significantly improve the shock-resisting performance and the anticorrosive performance, maintain optimal coating adhesion and reach up to a hardness level of 4H, thereby meeting the requirements on coating mechanical properties.

Description

technical field [0001] The invention relates to a technology in the field of chemical water-based coatings, in particular to a graphene oxide modified water-based epoxy anti-corrosion paint. Background technique [0002] Graphene is a monoatomic layer of graphite consisting of carbon atoms with sp 2 Hybrid link formation. This two-dimensional material exhibits many excellent physical and chemical properties, such as high strength, high carrier mobility, and high thermal conductivity, and has become one of the research hotspots in many fields. Graphene is oxidized to obtain graphene oxide. Due to the introduction of active functional groups such as carboxyl, hydroxyl, and epoxy groups on the sheet during the oxidation process, not only can it maintain a single-layer structure better than graphene, but these functional groups are active and can react with other groups. achieve the purpose of modification. Graphene oxide sheets can form a physical barrier in the coating, an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D163/00C09D5/08
CPCC08K2201/011C08K2201/014C08L2205/03C08L2205/035C09D5/08C09D163/00C08L83/12C08K13/06C08K3/04C08K3/34C08K2003/3045
Inventor 吴海霞戴梦玮郭立昂张虹
Owner 上海碳源汇谷新材料科技有限公司
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