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Water-based graphene oxide composite anticorrosive paint and preparation method thereof

A technology for anti-corrosion coatings and graphene layers, applied in anti-corrosion coatings, conductive coatings, coatings, etc., can solve the problems of graphene materials such as easy agglomeration, complicated preparation process, and unstable dispersion, so as to improve salt spray resistance, High transparency and strong adhesion

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-based materials still have many problems and constraints, such as graphene-based materials are easy to agglomerate
Due to the large specific surface area of ​​graphene-based materials and their derivatives, there is a strong van der Waals force between them, and the phenomenon of agglomeration and entanglement is obvious, making them unable to disperse stably. After dispersion, they are easy to reunite and difficult to open.
Moreover, graphene oxide needs to be modified, and the preparation process is complicated.

Method used

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  • Water-based graphene oxide composite anticorrosive paint and preparation method thereof
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  • Water-based graphene oxide composite anticorrosive paint and preparation method thereof

Examples

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preparation example Construction

[0117] The present invention also provides a kind of preparation method of graphene oxide acrylic acid emulsion, comprises the following steps:

[0118] 1) After premixing styrene, crosslinking monomer and acrylic polymerizable monomer, mixture A is obtained;

[0119] After the water-based graphene dispersion is heated up, after adding protective colloid and emulsifier for mixing, mixture B is obtained;

[0120] 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.

[0121] 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 o...

Embodiment 1

[0167] See Table 1, Table 1 is the graphene oxide acrylic emulsion formula table prepared in Examples 1-3 of the present invention.

[0168] Table 1

[0169]

[0170] See Table 2. Table 2 is a list of components of graphene oxide acrylic emulsion prepared in Examples 1-3 of the present invention.

[0171] Table 2

[0172]

[0173] In Examples 1 to 3, the emulsifier is formed by intermixing alkylphenol polyoxyethylene ether sulfate and vinyl ether hydroxyalkylsulfonate with a mass ratio of 1:1.

[0174] The preparation method of the graphene oxide acrylic emulsion provided by table 1 and table 2 may further comprise the steps:

[0175] (1) Mix the ingredients in the first component evenly to obtain solution A;

[0176] (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;

[0177] (3) Add an emulsifier to the reaction vessel, and ultrasonically stir until complet...

Embodiment 2

[0182] The preparation method of the graphene oxide acrylic acid emulsion that table 1 provides may further comprise the steps:

[0183] (1) Mix the ingredients in the first component evenly to obtain solution A;

[0184] (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;

[0185] (3) Add an emulsifier to the reaction vessel, and ultrasonically stir until completely dissolved;

[0186] (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;

[0187] (5) Cool down and discharge.

[0188] 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.

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Abstract

The invention provides a water-based composite anticorrosive paint film, namely a coating film, in the paint film, graphene oxide sheets are uniformly and orderly arranged in the paint film structure to form a graphene oxide layer; the graphene oxide layer is located in the paint film structure; the thickness direction of the graphene oxide layer is the same as or similar to that of the paint film structure. In a film formed by the water-based composite anticorrosive paint provided by the invention, graphene oxide can be uniformly and orderly distributed and is in parallel-like staggered distribution, a labyrinth network formed by interweaving graphene oxide sheets is formed, and the graphene oxide sheets are uniformly distributed in the whole paint film, so that the salt spray resistance of the paint is improved, the paint has good anticorrosive performance, and moreover, the graphene oxide is low in consumption and the corrosion resistance is good. The graphene oxide anticorrosive paint provided by the invention is a single-component water-based coating, has extremely low VOC, is environment-friendly, is simple and convenient to operate and convenient to construct, does not increase the improvement cost, and is easy to popularize and apply on a large scale.

Description

technical field [0001] The invention belongs to the technical field of anti-corrosion coatings, and relates to a water-based composite anti-corrosion coating film, a water-based composite anti-corrosion coating and a preparation method thereof, in particular to a water-based composite anti-corrosion coating film, a water-based graphene oxide composite anti-corrosion coating 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 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 co...

Claims

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Application Information

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IPC IPC(8): C09D133/02C09D133/08C09D125/14C09D5/08C09D5/24C08F212/08C08F220/06C08F220/56C08F220/18
CPCC09D133/02C09D125/14C09D133/24C09D5/08C09D5/24C08F212/08C08F220/18C08K3/042C08F220/06C08F220/56
Inventor 董广利张生安周炜任海永
Owner SHANDONG OBO NEW MATERIAL CO LTD
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