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A kind of ultra-large-size graphene water-based slurry for high-efficiency anticorrosion and preparation method thereof

A super-sized, graphene technology, used in anti-corrosion coatings, epoxy resin coatings, coatings, etc., can solve the problems of high physical barrier effect and limited application scope, achieve wide applicability, improve anti-corrosion performance, and improve dispersion. Effect

Active Publication Date: 2021-11-26
砥创(苏州)新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Aiming at the deficiencies of the prior art, the present invention provides a high-efficiency anti-corrosion ultra-large-size graphene water-based slurry and its preparation method, which solves the problem of high physical barrier effect of adding graphene to the coating as an anti-corrosion coating, and its application range Generates problems that are heavily restricted

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  • A kind of ultra-large-size graphene water-based slurry for high-efficiency anticorrosion and preparation method thereof
  • A kind of ultra-large-size graphene water-based slurry for high-efficiency anticorrosion and preparation method thereof
  • A kind of ultra-large-size graphene water-based slurry for high-efficiency anticorrosion and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0034]Weigh 0.1g graphene oxide was added to 100mL of deionized water, ultrasonic dispersion is formed 1mg / mL aqueous graphene oxide dispersion; mass ratio of 1: 1 was weighed hydrophilic monomers, hydrophobic monomers (the total mass of monomers 1g), was added to a 50mL volume ratio of 1: deionized water with a mixed solution of 0.25 of ethanol, and stirred to dissolve uniformly, transferred to graphene oxide aqueous dispersion is again stirred and dispersed uniformly transfer a three-necked flask, 90 under conditions ℃, magnetic stirring, reaction was 24h; the product was then washed with acetone, deionized water, ethyl acetate (mass ratio 1: 4: 1) mixed solution was repeatedly washed by centrifugation, thereby obtaining a block copolymer molecules conjugated modified level oversized graphene.

[0035] The large size of the graphene prepared slurry was added to the aqueous epoxy coatings, a high speed disperser to form a homogeneous system, the standby spray plate.

[0036] Th...

Embodiment 2

[0038] Weigh 0.15g graphene oxide was added to 100mL of deionized water, ultrasonic dispersion is formed 1.5mg / mL aqueous graphene oxide dispersion; mass ratio of 1: 3 to take said hydrophilic monomer, the hydrophobic monomer (the total mass of monomers 1.2 g of), was added to a 50mL volume ratio of 1: deionized water with a mixed solution of ethanol and stirred to dissolve uniformly, transferred to aqueous graphene dispersion, uniformly stirred and dispersed again, transferred three-neck flask, 80 under conditions ℃, magnetic stirring, reaction was 30h; the product was then washed with acetone, deionized water, ethyl acetate (mass ratio 1: 4: 1) mixed solution was repeatedly washed by centrifugation, thereby obtaining a block copolymer molecules conjugated modified level oversized graphene.

[0039] The large size of the graphene prepared slurry was added to the aqueous epoxy coatings, a high speed disperser to form a homogeneous system, the standby spray plate.

[0040] The sl...

Embodiment 3

[0042] Weigh 0.2g graphene oxide was added to 100mL of deionized water, ultrasonic dispersion is formed 2mg / mL aqueous graphene oxide dispersion; mass ratio of 1: 2 to take said hydrophilic monomer, the hydrophobic monomer (3g total mass of monomers ), was added to a 50mL volume ratio of 1: deionized water with a mixed solution of ethanol, and stirred to dissolve uniformly, transferred to a graphene aqueous dispersion, stirred and dispersed again uniformly transferred three-neck flask, 95 ℃ conditions under magnetic stirring, the reaction 36h; the product was then washed with acetone, ethyl acetate and deionized water, (mass ratio 1: 4: 1) mixed solution was washed repeatedly centrifuged to obtain a large size block copolymers of conjugated molecular level modified Graphene.

[0043] The large size of the graphene prepared slurry was added to the aqueous epoxy coatings, a high speed disperser to form a homogeneous system, the standby spray plate.

[0044] The slurry prepared in ...

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Abstract

The invention discloses a super-large-size graphene water-based slurry for high-efficiency anticorrosion and a preparation method thereof. A reducing agent is used to reduce super-large-size graphene oxide in situ, and block copolymerization occurs on the surface of graphene to form water-dispersible slurry at the molecular level. In the modification layer, the mass ratio of the reducing agent to the ultra-large graphene oxide is (8-15):1, wherein the reducing agent is a mixture of hydrophilic electroactive polymer monomers and hydrophobic electroactive polymer monomers, and the reducing agent is in situ The reduction of ultra-large-sized graphene oxide is carried out in a mixed solution, and the mixed solution includes deionized water and an organic solvent. The invention relates to the technical field of functional modification of graphene at the molecular level. The super-large-size graphene water-based slurry for high-efficiency anticorrosion and the preparation method thereof, the prepared graphene dispersion slurry has wide applicability, and is suitable for water-based epoxy resin systems, water-based acrylic resin systems, and water-based polyurethane systems, saving large-scale production A lot of cost.

Description

Technical field [0001] The present invention relates to the field of functionalized modification of graphene, in particular, a high-efficiency anti-corrosion ultra-large-size graphene slurry and a preparation method thereof. Background technique [0002] As a new two-dimensional material, graphene is a new type of two-dimensional material, due to its excellent physical and chemical characteristics. At present, graphene has been widely used in photoelectric devices, sensors, new functional composites, and energy storage. At present, graphene is prone to problems such as dispersibility and laminate, which is one of the bottlenecks that limit graphene to further industrial application of graphene. A large number of studies show that the presence of graphene dispersibility, the presence of the stacked problems is a certain relationship with the structure of the graphene itself, and the graphene is easily formed to form a large amount of oxygen-containing functional group (epoxy) duri...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D5/08C09D163/00
CPCC09D5/08C09D163/00C08K9/08C08K3/042
Inventor 胡南滔李志平赵杰孙浩
Owner 砥创(苏州)新材料科技有限公司