Modified graphene anti-corrosion coating as well as preparation method and application thereof

An anti-corrosion coating and graphene technology, applied in anti-corrosion coatings, coatings and other directions, can solve the problems of difficult peeling and uneven distribution of epoxy resin, and achieve the effects of good acid-base stability, extended service life, and good UV resistance.

Active Publication Date: 2021-07-23
INNER MONGOLIA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the intrinsic van der Waals interaction of graphene oxide, it exhibits a close-packed structure, causing problems of uneven distribution in epoxy resin and difficult exfoliation.

Method used

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  • Modified graphene anti-corrosion coating as well as preparation method and application thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] A preparation method for modified graphene anticorrosion coating, comprising the steps:

[0040] (1) Preparation of paint paste:

[0041] After dissolving the acrylic resin in xylene, adding an anti-precipitation agent therein, dispersing until uniform, and then filtering to obtain solution A;

[0042] Dissolving tannic acid in ethanol, dispersing until uniform and filtering to obtain solution B;

[0043] Mix solution A and solution B under magnetic stirring for 3 hours to obtain a millbase;

[0044] Wherein, the mass ratio of acrylic resin and tannic acid is 80:1;

[0045] (2) Preparation of graphene oxide@ZrO 2 Material:

[0046] S1, uniformly mixing nano zirconia and graphene oxide to obtain a mixed powder;

[0047] Wherein, the mass of the nano-zirconia accounts for 50wt% of the total amount of the mixed powder;

[0048] S2. Sintering of the mixed powder: the mixed powder in step S1 is sintered by discharge plasma, the heating rate is 70°C / min, the sintering tem...

Embodiment 2

[0056] A preparation method for modified graphene anticorrosion coating, comprising the steps:

[0057] (1) Preparation of paint paste:

[0058] After dissolving the acrylic resin in xylene, adding an anti-precipitation agent therein, dispersing until uniform, and then filtering to obtain solution A;

[0059] Dissolving tannic acid in isopropanol, dispersing until uniform, and filtering to obtain solution B;

[0060] Mix solution A and solution B under magnetic stirring for 2.5 hours to obtain a paint slurry;

[0061] Wherein, the mass ratio of acrylic resin and tannic acid is 90:1;

[0062] (2) Preparation of graphene oxide@ZrO 2 Material:

[0063] S1, uniformly mixing nano zirconia and graphene oxide to obtain a mixed powder;

[0064] Wherein, the mass of the nano-zirconia accounts for 40wt% of the total amount of the mixed powder;

[0065] S2. Sintering of the mixed powder: the mixed powder in step S1 is sintered by discharge plasma, the heating rate is 90°C / min, the ...

Embodiment 3

[0073] A preparation method for modified graphene anticorrosion coating, comprising the steps:

[0074] (1) Preparation of paint paste:

[0075] After dissolving the acrylic resin in xylene, adding an anti-precipitation agent therein, dispersing until uniform, and then filtering to obtain solution A;

[0076] Dissolving tannic acid in n-amyl alcohol, dispersing until uniform, and then filtering to obtain solution B;

[0077] Mix solution A and solution B for 2 hours under magnetic stirring to obtain a millbase;

[0078] Wherein, the mass ratio of acrylic resin and tannic acid is 100:1;

[0079] (2) Preparation of graphene oxide@ZrO 2 Material:

[0080] S1, uniformly mixing nano zirconia and graphene oxide to obtain a mixed powder;

[0081] Wherein, the mass of the nano-zirconia accounts for 30wt% of the total amount of the mixed powder;

[0082] S2. Sintering of the mixed powder: the mixed powder in step S1 is sintered by discharge plasma, the heating rate is 110°C / min, ...

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Abstract

The invention relates to the technical field of anti-corrosion coating materials, in particular to a modified graphene anti-corrosion coating and a preparation method and application thereof. The preparation method comprises the following steps of: blending acrylic resin and tannic acid to obtain paint slurry, preparing a graphene oxide@ZrO2 material, reducing the surface of graphene oxide, and enabling reduced amino groups to react with the acrylic resin in the paint slurry, so as to enable graphene oxide@ZrO2 to be stably grafted on the acrylic resin. A corrosion medium is prevented from entering the acrylic resin coating through the graphene oxide@ZrO2 material, so that the acrylic resin is protected. The acrylic resin is adopted as the anti-corrosion coating, chloride ions are effectively prevented from damaging a metal oxide film protection layer, and pitting corrosion or pit corrosion is effectively avoided. Tannic acid and iron ions on the surface of a steel structure are subjected to rapid reaction, so that tannic acid and iron ions are chelated, then paint paste with physical and chemical dual protection effects is formed, and the modified graphene anti-corrosion coating with excellent anti-corrosion performance is obtained.

Description

technical field [0001] The invention relates to the technical field of anti-corrosion coating materials, in particular to a modified graphene anti-corrosion coating and its preparation method and application. Background technique [0002] data show , ocean to the east of our country coastal Regional economy and Social development play huge The role of the 12 coastal provinces, autonomous regions and municipalities ground It occupies only 14% of the country's land area, but its GDP accounts for the whole country The output value of the national marine economy was 8 billion yuan in 1980, 43.8 billion yuan in 1990, 413.3 billion yuan in 2000, and 3.8 trillion yuan in 2010, with a growth rate of over 20%. With the rapid development, anticorrosion of ships and marine engineering facilities has become an important problem that needs to be solved urgently in the development. [0003] Marine seawater corrosion is mainly chloride ion corrosion. Marine chloride ions can...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D133/04C09D5/08C09D7/62C09D7/63
CPCC08K2003/2244C08K2201/011C09D5/08C09D133/04C09D7/62C09D7/63C08K5/1545C08K9/04C08K3/042C08K3/22C08K9/02
Inventor 冀国俊吴继鹏吴强
Owner INNER MONGOLIA UNIV OF TECH
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