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Resin anticorrosion paint containing graphene/epoxy resin composite material and preparation method thereof

A technology of anti-corrosion coatings and epoxy resins, applied in the direction of epoxy resin coatings, anti-corrosion coatings, coatings, etc., can solve the problems of easy agglomeration of graphene, difficulty in opening, poor effect, etc., achieve high-strength paint film thickness and improve performance , Environmentally friendly effect

Inactive Publication Date: 2019-03-05
SHANDONG OBO NEW MATERIAL CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In recent years, coating products containing graphene-based materials have gradually been reported. However, in practical applications, graphene still has many problems and restrictive factors, such as graphene is very easy to agglomerate.
Due to the large specific surface area of ​​graphene and its derivatives, there is a strong van der Waals interaction between them, and the phenomenon of agglomeration and entanglement is obvious, so that it cannot be dispersed stably, and it is easy to reunite and difficult to open after dispersion.
Although there are a lot of studies to improve the dispersion effect of graphene by adding different types of dispersants or modification methods, the effect is poor in practical applications, and additional impurities will be introduced, which will have a negative impact on subsequent research, and graphene As a flexible material, it is more likely to agglomerate when mixed with other materials in the coating, such as zinc powder, which directly affects the effect of graphene-based materials in coatings

Method used

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  • Resin anticorrosion paint containing graphene/epoxy resin composite material and preparation method thereof
  • Resin anticorrosion paint containing graphene/epoxy resin composite material and preparation method thereof
  • Resin anticorrosion paint containing graphene/epoxy resin composite material and preparation method thereof

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preparation example Construction

[0090] The present invention also provides a kind of preparation method of resin anticorrosion coating, comprises the following steps:

[0091] A) after mixing graphene and epoxy resin for the first time, obtain graphene composite epoxy resin;

[0092] B) the composite material, filler and solvent of graphene and epoxy resin obtained in the above steps are mixed, and after grinding again, intermediate products are obtained;

[0093] C) after the intermediate product obtained in the above steps, zinc powder, auxiliary agent and solvent are mixed again, the resin anticorrosion coating is obtained;

[0094] The auxiliary agent includes one or more of dispersant, anti-settling agent, defoamer, filler, curing agent and accelerator.

[0095] The present invention can correspond to the selection and composition of the raw materials required in the above-mentioned preparation process, as well as the corresponding optimization principles, and the selection and composition of the corre...

Embodiment 1

[0185] Graphene / epoxy composites

[0186] Weigh 40g of epoxy resin 601, 30g of xylene, and 3g of n-butanol and mix them uniformly under the condition of ultrasonic stirring, the stirring speed is between 200-500, and the ultrasonic frequency is 40kHz.

[0187] Then weigh 10 g of graphene slurry with a solid content of 2%, add 30 g of n-butanol and ultrasonically stir for 30 min to disperse the graphene evenly in n-butanol at a stirring speed of 200-500. The ultrasonic frequency is 40kHz.

[0188] Then, the dispersed graphene solution was added dropwise into the epoxy resin 601 solution under ultrasonic stirring to obtain a precursor solution.

[0189] The precursor solution obtained in the above steps was then subjected to wet ball milling at a ball milling speed of 300 r / s for 30 minutes, followed by ultrasonic stirring for 30 minutes to obtain a mixed solution.

[0190] Then, the graphene-epoxy resin mixed solution is processed by rotary evaporation until about 95% of the ...

Embodiment 2

[0193] 1) Graphene composite epoxy resin 601 was prepared with reference to the method of Example 1, wherein the graphene produced by Shandong Oupo New Materials Co., Ltd. was 0.56g, the solvent xylene was 22.8g, and the epoxy resin was 28g.

[0194] 2) Add the graphene composite resin obtained in step 1) into the stirrer; add propylene carbonate 11.3g, propylene glycol methyl ether 6.6g, defoamer 0.3g, and stir at a rotating speed of 1000r / min for 30min;

[0195] 3) In the graphene composite resin solution obtained in step 2), add calcium carbonate 40g, ferrophosphorus powder 28.3g, organoclay 2.15g, and stir to obtain mother liquor 1, rotating speed 3000r / min, stirring for 50min;

[0196] 4) Grinding with a three-roll machine for 30 minutes to obtain mother liquor 2;

[0197] 5) To the mother liquor 2 obtained in step 4), add 100.7g spherical zinc powder, 0.65g propylene carbonate, 1g Monoral3300, 5g aluminum powder slurry and stir for 30 minutes to obtain component A;

[0...

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Abstract

The invention provides resin anticorrosion paint. The resin anticorrosion paint includes, by mass, 20-40 parts of graphene / epoxy resin, 70-130 parts of zinc powder, 45-75 parts of solvents, and otherauxiliary agents. The invention also provides a preparation method of the resin anticorrosion paint. The method changes an adding mode of graphene materials, firstly graphene and epoxy resin in the paint are compounded to obtain a composite material of the graphene and the epoxy resin, and then the treated graphene and epoxy resin are combined with other components of specific proportions to obtain the resin anticorrosion paint, and so, the problem of graphene dispersion can be better solved, perfect production of its excellent performance is ensured, other additives do not need to be added, introduction of impurities is reduced, the disadvantage of uneven mixing of flexible graphene materials in a paint system is fundamentally solved, uniform dispersion of the graphene can be ensured, thereby obtaining better performance.

Description

technical field [0001] The invention belongs to the technical field of anti-corrosion coatings, and relates to a resin anti-corrosion coating and a preparation method thereof, in particular to a resin anti-corrosion coating containing a graphene material / epoxy resin composite material and a preparation method thereof. Background technique [0002] Graphene is a new material with a single-layer sheet structure composed of carbon atoms. As a two-dimensional crystal composed of carbon atoms with only one atomic thickness, it is currently the thinnest in the application field. material and the strongest material, the breaking strength is 200 times higher than that of steel, and it has good elasticity, and the stretching range can reach 20% of its own size; at the same time, graphene also has excellent electrical conductivity, which can reduce the inner In addition, graphene is almost completely transparent, absorbing only 2.3% of light, and is so dense that even the smallest gas...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D163/00C09D5/10C09D7/61
CPCC08K2003/0812C08K2003/265C09D5/103C09D5/106C09D163/00C08L83/04C08K13/06C08K7/18C08K3/04C08K3/08C08K3/26
Inventor 李伟铭张在忠赵永彬刘海波
Owner SHANDONG OBO NEW MATERIAL CO LTD
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