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Preparation method for graphene oxide modified polymer cement-based anti-corrosive paint

A graphene modification and anti-corrosion coating technology, applied in anti-corrosion coatings, coatings and other directions, can solve the problems of difficult to meet the long-term anti-corrosion of coatings, insufficient anti-corrosion performance, reduced service life, etc., to optimize mechanical properties, prevent cracking, improve The effect of abrasion resistance

Active Publication Date: 2019-04-23
青岛伟力商品混凝土有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Existing polymer cement-based coatings have disadvantages such as low mechanical strength, poor wear resistance, low compactness, and insufficient anti-corrosion performance. It is difficult to meet the performance requirements of long-term anti-corrosion coatings

Method used

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  • Preparation method for graphene oxide modified polymer cement-based anti-corrosive paint
  • Preparation method for graphene oxide modified polymer cement-based anti-corrosive paint

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] A preparation method for a graphene oxide modified polymer cement-based anticorrosion coating, comprising the following steps:

[0031] (1) Graphene oxide carboxylation

[0032] Add 15 parts of graphene oxide to 55 parts of 0.5 mol / L sodium hydroxide alkali solution, and ultrasonically disperse for 2 hours. Then add 8 parts of chloroacetic acid and ultrasonically disperse for 1-2h. Finally, the product was separated by suction filtration with a 0.22 μm PTFE filter membrane, and the filter cake was repeatedly centrifuged and washed to neutrality to remove impurities. The obtained product was dried under vacuum at 45 °C for 12 h to obtain a homogeneous carboxylated graphene oxide solution.

[0033] (2) Synthesis of graphene oxide modified polyacrylate emulsion

[0034] Stir 2 parts of anionic emulsifier, 2 parts of nonionic emulsifier, and 35 parts of deionized water evenly, then add 55 parts of acrylic monomer, and stir magnetically for 30 minutes to obtain a pre-emuls...

Embodiment 2

[0049] A preparation method for a graphene oxide modified polymer cement-based anticorrosion coating, comprising the following steps:

[0050] (1) Graphene oxide carboxylation

[0051] Add 20 parts of graphene oxide into 60 parts of 0.5 mol / L sodium hydroxide alkali solution, and ultrasonically disperse for 2 hours. Then add 10 parts of chloroacetic acid and ultrasonically disperse for 1-2h. Finally, the product was separated by suction filtration with a 0.22 μm PTFE filter membrane, and the filter cake was repeatedly centrifuged and washed to neutrality to remove impurities. The obtained product was dried under vacuum at 45 °C for 12 h to obtain a homogeneous carboxylated graphene oxide solution.

[0052] (2) Synthesis of graphene oxide modified polyacrylate emulsion

[0053] Stir 1 part of anionic emulsifier, 1 part of nonionic emulsifier, and 30 parts of deionized water evenly, then add 50 parts of acrylic monomer, and stir magnetically for 30 minutes to obtain a pre-emul...

Embodiment 3

[0068] A preparation method for a graphene oxide modified polymer cement-based anticorrosion coating, comprising the following steps:

[0069] (1) Graphene oxide carboxylation

[0070] Add 10 parts of graphene oxide into 50 parts of 0.5 mol / L sodium hydroxide alkali solution, and ultrasonically disperse for 2 hours. Then add 5 parts of chloroacetic acid and ultrasonically disperse for 1-2h. Finally, the product was separated by suction filtration with a 0.22 μm PTFE filter membrane, and the filter cake was repeatedly centrifuged and washed to neutrality to remove impurities. The obtained product was dried under vacuum at 45 °C for 12 h to obtain a homogeneous carboxylated graphene oxide solution.

[0071] (2) Synthesis of graphene oxide modified polyacrylate emulsion

[0072] Stir 3 parts of anionic emulsifier, 3 parts of nonionic emulsifier, and 35 parts of deionized water evenly, then add 60 parts of acrylic monomer, and stir magnetically for 30 minutes to obtain a pre-emu...

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Abstract

The invention provides a preparation method for graphene oxide modified polymer cement-based anti-corrosive paint. The preparation method comprises the following steps: performing carboxylation of a graphene oxide; synthesizing graphene oxide modified polyacrylate emulsion; and preparing the graphene oxide modified polymer cement-based anti-corrosive paint. The paint prepared by the preparation method has the advantages of high toughness, high bonding strength and high compactness and the like of an organic polymer, and has high mechanical strength and high weather resistance and durability ofa special cement-based material. The graphene oxide is used for modifying the polymer cement-based anti-corrosive paint, a mechanical property of a polymer film is further optimized, interface compatibility and a bonding force of a polymer organic component and a cement-based inorganic component are improved, thereby a paint microscopic structure is optimized, and anti-corrosion performance and stability are improved.

Description

technical field [0001] The invention designs a cement-based anticorrosion coating, and in particular relates to a preparation method of a graphene oxide modified polymer cement-based anticorrosion coating. Background technique [0002] Polymer cement-based coatings are composed of polymer emulsion (one or more of polypropylene emulsion, styrene-acrylic emulsion, silicon-acrylic emulsion, polyacrylate emulsion, VAE emulsion), sulphoaluminate cement, pigments and fillers (basalt , talcum powder, silicon dioxide, heavy calcium, fly ash, metakaolin) and various additives (defoamers, preservatives, dispersants, film-forming aids) Waterproof coating is a two-component coating with high toughness of polymer materials and good durability of inorganic materials. [0003] Graphene is a two-dimensional carbon nanomaterial in which carbon atoms form a hexagonal honeycomb lattice with sp² hybrid orbitals. Graphene has excellent thermal conductivity, electrical conductivity, and mechani...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D133/12C09D133/08C09D5/08C09D7/62C09D7/61C09D7/63C09D7/65C08F220/14C08F2/26C08F2/30C08F220/18
CPCC08F2/26C08F2/30C08F220/14C08F220/18C08F220/1804C08K2003/328C08K2201/014C09D5/08C09D7/61C09D7/62C09D7/63C09D7/65C09D133/08C09D133/12C08K13/06C08K9/04C08K3/042C08K3/36C08K3/34C08K3/32
Inventor 赵丕琪刘红花黄永波王守德孙传奎宫晨琛芦令超
Owner 青岛伟力商品混凝土有限公司
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