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Graphene oxide acrylic emulsion, preparation method thereof and water-based paint

A technology of graphene acrylic and acrylic acid, which is applied in the field of water-based coatings and graphene oxide acrylic emulsion films, which can solve problems such as difficulty in opening, easy agglomeration of graphene, and large specific surface area, and achieve improved salt spray resistance and impact resistance. Improve the effect of good static conductivity

Pending Publication Date: 2021-07-16
SHANDONG OBO NEW MATERIAL CO LTD
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  • Summary
  • 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.

Method used

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  • Graphene oxide acrylic emulsion, preparation method thereof and water-based paint
  • Graphene oxide acrylic emulsion, preparation method thereof and water-based paint
  • Graphene oxide acrylic emulsion, preparation method thereof and water-based paint

Examples

Experimental program
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preparation example Construction

[0093] The invention provides a kind of preparation method of graphene oxide acrylic acid emulsion, comprises the following steps:

[0094] 1) After premixing styrene, crosslinking monomer and acrylic polymerizable monomer, mixture A is obtained;

[0095] After the water-based graphene dispersion is heated up, after adding protective colloid and emulsifier for mixing, mixture B is obtained;

[0096] 2) The mixture A and the initiator obtained in the above steps are slowly added to the mixture B, and after the reaction, a graphene oxide acrylic emulsion is obtained.

[0097] 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 corresponding raw materials in the aforementioned graphene oxide acrylic emulsion, and the corresponding optimization principles. Let me repeat them one by one.

[0098]...

Embodiment 1

[0137] See Table 1, Table 1 is the graphene oxide acrylic emulsion formula table prepared in Examples 1-4 of the present invention.

[0138] Table 1 graphene oxide acrylic acid emulsion formulation table (parts by weight)

[0139]

[0140] See Table 2, Table 2 is the composition list of the graphene oxide acrylic emulsion prepared in Examples 1-4 of the present invention.

[0141] Table 2 graphene oxide acrylic emulsion component list

[0142]

[0143] In Examples 1 to 4, the emulsifier is formed by intermixing alkylphenol polyoxyethylene ether sulfate and vinyl ether hydroxyalkyl sulfonate with a mass ratio of 1:1.

[0144] The preparation method of the graphene oxide acrylic emulsion provided by table 1 and table 2 may further comprise the steps:

[0145] (1) Mix the ingredients in the first component evenly to obtain solution A;

[0146] (2) Add water-based graphene oxide dispersion liquid into the reaction vessel, heat up to 75-95°C, add protective glue, and ultra...

Embodiment 2

[0156] The preparation method of the graphene oxide acrylic acid emulsion that table 1 provides may further comprise the steps:

[0157] (1) Mix the ingredients in the first component evenly to obtain solution A;

[0158] (2) Add water-based graphene oxide dispersion liquid into the reaction vessel, heat up to 75-95°C, add protective glue, and ultrasonically stir until dissolved;

[0159] (3) Add an emulsifier to the reaction vessel, and ultrasonically stir until completely dissolved;

[0160] (4) Add the solution A and the initiator dropwise to the reaction vessel at the same time, and finish dropping at a constant speed within 2 to 2.5 hours, and keep warm for 30 minutes after dropping;

[0161] (5) Cool down and discharge.

[0162] In step (5), it is preferable to lower the temperature to 70°C first, add tert-butyl hydroperoxide, etc. to remove residual monomers, then lower the temperature, and discharge.

[0163] The graphene oxide acrylic emulsion prepared in Example 2...

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Abstract

The invention provides a graphene oxide acrylic emulsion film, which is characterized in that graphene oxide sheet layers are distributed in a staggered manner to form a graphene oxide sheet three-dimensional network; and the graphene oxide sheet layers are distributed in the whole thin film. The graphene oxide acrylic emulsion coating film provided by the invention has a special structure, graphene oxide can be uniformly and orderly distributed in a staggered manner to form the three-dimensional network with graphene oxide lamellae interwoven, so that the graphene oxide lamellae are embedded into a polymer formed by cross-linking an acrylic polymeric monomer and a cross-linking monomer; the graphene oxide can be uniformly distributed in the whole film, so that the agglomeration problem of the graphene oxide is solved; moreover, the special crosslinking monomers are added, so that the corrosion resistance and conductivity of the emulsion are improved, and the special crosslinking monomers and the emulsion supplement each other, thereby laying a solid foundation for better improving the performance of the applied water-based paint subsequently.

Description

technical field [0001] The invention belongs to the technical field of anti-corrosion coatings, and relates to a graphene oxide acrylic emulsion, a preparation method thereof, and a water-based coating, in particular to a graphene oxide acrylic emulsion film, a graphene oxide acrylic emulsion, a preparation method thereof, and an aqueous coating. 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 layer of atomic thickness, it is currently the lightest and most advanced material in the application field. The thinnest and strongest material with an electron mobility of 2×10 at room temperature 5 cm 2 ·V -1 ·s -1 , which is 1 / 300 of the speed of light, and the theoretical specific surface area can reach 2630m2·g -1 , the full-band light absorption is only 2.3%, and the thermal conductivity is as high as 5000W·m -1 ·K -1 , the Young's modu...

Claims

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Application Information

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IPC IPC(8): C09D125/08C09D133/02C09D133/10C09D5/08C09D5/24C08F212/08C08F220/06C08F220/56C08F220/58C08F220/18C08F216/14
CPCC09D125/08C09D133/24C09D133/26C09D5/08C09D5/24C08F212/08C08F220/06C08F220/18C08F2/44C08K3/042C08K2201/001
Inventor 李鹏宇张生安周炜任海永
Owner SHANDONG OBO NEW MATERIAL CO LTD