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A kind of modified graphene and its preparation method and application

A graphene and graphene dispersion technology, applied in the field of materials, can solve the problems of limited adsorption of acidic substances, low compatibility, failure to meet the requirements, etc., and achieve the effect of improving binding force and compatibility

Active Publication Date: 2022-03-29
LUOYANG INST OF CUTTING EDGE TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Epoxy resin has better mechanical and electrical insulation properties than other resins, and is one of the three major film-forming substances of anti-corrosion coatings, so it plays an important role in anti-corrosion coatings. However, in epoxy anti-corrosion coatings with rust , the compatibility of organic acids and inorganic acids with epoxy resin systems is low, which restricts the application of organic acids and inorganic acids in epoxy anticorrosion coatings with rust
[0003] At present, molecular sieves are usually used to adsorb acidic substances, and then applied to epoxy resin systems to make acidic substances and epoxy resin systems have better compatibility. However, the analytical sieve used in this method has limited adsorption of acidic substances and cannot achieve Require

Method used

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  • A kind of modified graphene and its preparation method and application
  • A kind of modified graphene and its preparation method and application

Examples

Experimental program
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Effect test

Embodiment 1

[0027] Add 0.5 parts of dispersant BYK-190 and 10 parts of single-layer graphene to 30 parts of the first deionized water, and stir at 400 rpm for 2 hours to obtain a single-layer graphene dispersion;

[0028] Add 10 parts of phosphoric acid to 20 parts of the second deionized water, and stir at 400 rpm for 1 hour to obtain a phosphoric acid solution;

[0029] Add phosphoric acid solution to the single-layer graphene dispersion, stir rapidly at 700rpm for 20min, add 2 parts of silane coupling agent KH550, and freeze-dry for 5h below 0°C to obtain modified graphene coated with coupling agent and adsorbed with acid .

Embodiment 2

[0031] Add 0.7 parts of dispersant BYK-118 and 15 parts of oligolayer graphene to 50 parts of the first deionized water, and stir at 600 rpm for 2.5 hours to obtain a oligolayer graphene dispersion;

[0032] Add 12 parts of gallic acid to 30 parts of the second deionized water, and stir at 600 rpm for 2 hours to obtain a gallic acid solution;

[0033] Add the gallic acid solution to the oligolayer graphene dispersion, stir rapidly at 900rpm for 30min, add 3 parts of silane coupling agent A-1120, and freeze-dry for 8h below 0°C to obtain a modification coated with the coupling agent and adsorbed with acid. permanent graphene.

Embodiment 3

[0035] Add 0.2 parts of dispersant BYK-2155 and 13 parts of single-layer graphene to 20 parts of the first deionized water, and stir at 500 rpm for 1.5 hours to obtain a single-layer graphene dispersion;

[0036] Add 15 parts of polyphosphoric acid to 25 parts of the second deionized water, and stir at 400rpm for 1.5h to obtain a polyphosphoric acid solution;

[0037] Add the polyphosphoric acid solution to the single-layer graphene dispersion, stir rapidly at 800rpm for 25min, add 1 part of silane coupling agent A-1130, freeze-dry below 0°C for 8h, and obtain a graphene coated with the coupling agent and adsorbed with acid modified graphene.

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Abstract

The invention provides a modified graphene and its preparation method and application, comprising: adding a dispersant and graphene to the first deionized water to obtain a graphene dispersion; adding an acid to the second deionized water to obtain an acid solution and adding the acid solution to the graphene dispersion, stirring, adding a coupling agent, and drying to obtain modified graphene, wherein the modified graphene is coated with a coupling agent and adsorbed with acid. The modified graphene prepared by the method of the present invention improves the compatibility of organic acid and inorganic acid in the epoxy resin system, and solves the compatibility between the acidic substance and the epoxy resin system in the epoxy anti-corrosion paint with rust question.

Description

technical field [0001] The invention relates to the field of materials, more specifically, to a modified graphene and its preparation method and application. Background technique [0002] Epoxy resin has better mechanical and electrical insulation properties than other resins, and is one of the three major film-forming substances of anti-corrosion coatings, so it plays an important role in anti-corrosion coatings. However, in epoxy anti-corrosion coatings with rust , The compatibility of organic acids and inorganic acids with epoxy resin systems is low, which restricts the application of organic acids and inorganic acids in epoxy anticorrosion coatings with rust. [0003] At present, molecular sieves are usually used to adsorb acidic substances, and then applied to epoxy resin systems to make acidic substances and epoxy resin systems have better compatibility. However, the analytical sieve used in this method has limited adsorption of acidic substances and cannot achieve Re...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D163/00C09D7/62
CPCC09D163/00C08K7/00C08K9/02C08K9/04C08K9/06C08K9/12
Inventor 不公告发明人
Owner LUOYANG INST OF CUTTING EDGE TECH
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