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A kind of graphene zinc-rich coating and preparation method thereof

A graphene and zinc-rich technology, applied in polyester coatings, anti-corrosion coatings, epoxy resin coatings, etc., can solve the problems of poor anti-corrosion performance and poor industrial application effect, and achieve enhanced anti-corrosion performance, improved cathodic protection effect, The effect of enhancing density

Active Publication Date: 2021-10-22
JIANGNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the disadvantages of poor anticorrosion performance and poor industrial application effect of the existing zinc-rich coatings, the present invention provides a graphene zinc-rich coating, which can improve the dispersibility of graphene in the epoxy resin matrix and the compactness of the paint film. properties, thereby enhancing the anti-corrosion performance, and improving the industrial application effect of graphene in anti-corrosion coatings, for this reason the present invention also provides a preparation method for graphene zinc-rich coatings

Method used

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  • A kind of graphene zinc-rich coating and preparation method thereof

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Comparison scheme
Effect test

Embodiment 1

[0031] The graphene zinc-rich coating comprises a matrix mixture, a redox agent mixture, an auxiliary mixture and a curing agent mixture, wherein,

[0032] The matrix mixture includes the following components in parts by weight: 5 parts of epoxy resin, 2 parts of alkyd resin, and 1 part of benzyl alcohol;

[0033] The redox agent mixture includes the following components in parts by weight: 90 parts of zinc powder, 0.5 parts of acid-doped polyaniline, acid-doped polyaniline is dilute hydrochloric acid doped polyaniline, and dilute hydrochloric acid-doped polyaniline is in powder form , obtained by freeze-drying a polyaniline dispersion doped with dilute hydrochloric acid with a concentration of 1 mol / L and pH=2.7, 0.1 part of graphene, 0.1 part of graphene oxide, and 4 parts of benzyl alcohol;

[0034] Auxiliary mixture comprises the following components by weight: 2 parts of anti-settling agent, anti-settling agent is polyethylene wax, 1 part of film-forming aid, and film-for...

Embodiment 2

[0042] The graphene zinc-rich coating comprises a matrix mixture, a redox agent mixture, an auxiliary mixture and a curing agent mixture, wherein,

[0043] The matrix mixture includes the following components in parts by weight: 9 parts of epoxy resin, 0 part of alkyd resin, and 1 part of benzyl alcohol;

[0044] The redox agent mixture includes the following components in parts by weight: 70 parts of zinc powder, 5 parts of acid-doped polyaniline, acid-doped polyaniline is citric acid-doped polyaniline, and citric acid-doped polyaniline is in powder form , obtained by freeze-drying a citric acid-doped polyaniline dispersion with a concentration of 2mol / L and pH=3.5, 1 part of graphene, 2 parts of graphene oxide, and 10 parts of benzyl alcohol;

[0045] The auxiliary mixture includes the following components in parts by weight: 1 part of anti-settling agent, the anti-settling agent is organic bentonite, 2 parts of film-forming aid, and the film-forming aid is BASF Efka PL 5381...

Embodiment 3

[0053] The graphene zinc-rich coating comprises a matrix mixture, a redox agent mixture, an auxiliary mixture and a curing agent mixture, wherein,

[0054] The matrix mixture includes the following components in parts by weight: 10 parts of epoxy resin, 8 parts of alkyd resin, and 1 part of benzyl alcohol;

[0055] The redox agent mixture includes the following components in parts by weight: 80 parts of zinc powder, 4 parts of acid-doped polyaniline, acid-doped polyaniline is dilute hydrochloric acid doped polyaniline, and dilute hydrochloric acid-doped polyaniline is in powder form , obtained by freeze-drying a polyaniline dispersion doped with dilute hydrochloric acid with a concentration of 1 mol / L and pH=2.7, 2 parts of graphene, 1 part of graphene oxide, and 6 parts of benzyl alcohol;

[0056] The auxiliary mixture includes the following components in parts by weight: 3 parts of anti-settling agent, the anti-settling agent is organic bentonite, 1 part of film-forming aid, a...

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Abstract

The invention provides a graphene zinc-rich coating, which can improve the dispersibility of graphene in the epoxy resin matrix and the compactness of the paint film, thereby enhancing the anti-corrosion performance and improving the industrial application of graphene in anti-corrosion coatings Effect, for this reason the present invention also provides the preparation method of graphene zinc-rich paint, graphene zinc-rich paint comprises matrix mixture, redox agent mixture, auxiliary mixture and curing agent mixture, and the preparation method of graphene zinc-rich paint comprises respectively The matrix mixture and the curing agent mixture are stirred with a rotary agitator, and the redox agent mixture is ground, sieved and ultrasonically oscillated, and then the pretreated matrix mixture, redox agent mixture, curing agent mixture and auxiliary mixture are mixed, and then The graphene zinc-rich coating is obtained by stirring with a frequency conversion disperser.

Description

technical field [0001] The invention relates to the technical field of coatings, in particular to the technical field of anti-corrosion coatings, in particular to a graphene zinc-rich coating and a preparation method thereof. Background technique [0002] Steel materials are an important raw material in industrial production, but steel materials are also susceptible to corrosion, which affects the service life and even production safety. Therefore, improving the corrosion resistance of steel materials plays an important role in industrial production. [0003] At present, the corrosion resistance of steel materials is generally improved by coating anti-corrosion coatings on the surface of steel. The existing anti-corrosion coatings are mainly zinc-rich coatings, which use the principle of cathodic protection, and the zinc in the anode area loses electrons and is corroded to make the cathode The electrons in the iron area are protected. [0004] The zinc powder content in the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D163/00C09D167/08C09D5/10C09D7/61C09D7/65
CPCC08K2003/0893C08K2201/014C08L2205/035C09D5/106C09D163/00C09D167/08C09D7/61C09D7/65C08L67/08C08L79/02C08K13/02C08K3/08C08K3/042C08L63/00
Inventor 朱相苗倪忠斌陈明清刘士荣
Owner JIANGNAN UNIV