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A kind of anti-scaling and anti-corrosion functional coating and its preparation method and application method

A technology of functional coatings and functional fillers, used in anti-corrosion coatings, conductive coatings, epoxy resin coatings, etc., can solve problems such as accelerated corrosion and achieve the effect of preventing the impact

Active Publication Date: 2020-06-19
NORTHEAST GASOLINEEUM UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of this, the present invention provides a scale-inhibiting and anti-corrosion functional coating and its preparation method and application method. The coating utilizes the excellent properties of graphene and simultaneously solves the problem of accelerated corrosion caused by its conductivity.

Method used

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  • A kind of anti-scaling and anti-corrosion functional coating and its preparation method and application method
  • A kind of anti-scaling and anti-corrosion functional coating and its preparation method and application method

Examples

Experimental program
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Effect test

Embodiment 1

[0057] (1) Metal surface pretreatment:

[0058] Use 400-mesh sandpaper to quickly polish the metal surface, then put it into an ethanol solution for ultrasonic cleaning to remove impurities such as grease and dust on the surface.

[0059] (2) Preparation of paint:

[0060] Take 2 parts of Tris-HCl (10mM, pH=8.5) buffer solution in a beaker and add 0.1 part of graphene oxide, add 0.05 part of dopamine after ultrasonic dispersion for 10 minutes, take 0.1 part of HEDP and 1 part of perfluorooctanoic acid after magnetic stirring at room temperature for 10 hours Add 0.05 parts of aniline dropwise into the solution, stir for 30 min until the aniline is completely dissolved, add 0.2 parts of ammonium persulfate and stir for 6 hours to end, filter and dry to obtain A functional filler.

[0061]Add 0.5 parts of hexagonal boron nitride to 15 parts of water and 10 parts of absolute ethanol and sonicate for 30 min, then add 0.1 part of KH550 and stir for 1 h. After complete reaction, he...

Embodiment 2

[0069] (1) Metal surface pretreatment:

[0070] Use 400-mesh sandpaper to quickly polish the metal surface, then put it into an ethanol solution for ultrasonic cleaning to remove impurities such as grease and dust on the surface.

[0071] (2) Preparation of paint:

[0072] Take 5 parts of Tris-HCl (10mM, pH=8.5) buffer solution in a beaker and add 0.05 parts of graphene oxide, add 0.05 parts of dopamine after ultrasonic dispersion for 10 minutes, take 0.001 parts of ATMP and 0.001 parts of perfluorooctanoic acid after magnetic stirring at room temperature for 10 hours Add 0.01 part of amino-terminated aniline dropwise into the solution, stir for 30 min until the amino-terminated aniline is completely dissolved, add 0.1 part of ammonium persulfate and stir for 4 hours to end, filter and dry to obtain component A, and set aside.

[0073] Add 0.1 part of hexagonal boron nitride to 15 parts of water and 5 parts of absolute ethanol and sonicate for 30 min, then add 0.1 part of KH5...

Embodiment 3

[0079] (1) Metal surface pretreatment:

[0080] Use 400-mesh sandpaper to quickly polish the metal surface, then put it into an ethanol solution for ultrasonic cleaning to remove impurities such as grease and dust on the surface.

[0081] (2) Preparation of paint:

[0082] Take 1 part of Tris-HCl (10mM, pH=8.5) buffer solution in a beaker and add 0.1 part of graphene oxide, add 0.5 part of dopamine after ultrasonic dispersion for 10 minutes, take 0.1 part of DTPMPA and 0.1 part of perfluorooctanoic acid after magnetic stirring at room temperature for 10 hours Add 0.1 part of aniline dropwise into the solution, stir for 30 minutes until the aniline is completely dissolved, add 0.2 part of ammonium persulfate and stir for 10 hours to complete, filter and dry to obtain component A, and set aside.

[0083] Add 5 parts of hexagonal boron nitride to 20 parts of water and 10 parts of absolute ethanol and sonicate for 10 min, add 5 parts of KH570 and stir for 1 h. After the complete...

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Abstract

The invention discloses a scale-inhibiting and anti-corrosion functional coating and its preparation method and application method. The coating introduces two kinds of flake structures with different conductivity in the form of AB components, and uses an acid scale inhibitor and perfluorooctanoic acid to dope polyaniline. It has hydrophilic groups and hydrophobic groups on the surface, and both groups have anti-scaling properties. The hydrophilicity and hydrophobicity of the filler surface can be controlled by adjusting the addition of the two additives, which can effectively prevent graphene oxide from The effect of electrical conductivity on the anticorrosion performance of coatings. The problem of accelerated corrosion caused by graphene's electrical conductivity is solved.

Description

technical field [0001] The invention relates to a functional coating with anti-scaling and anti-corrosion. Background technique [0002] At present, due to the rapid decrease of medium temperature in oilfield oil pumping pipelines at a distance of 500-1000 meters from the ground, prominent scaling and corrosion problems will occur. However, traditional three-proof coatings do not have long-life scale and anti-corrosion properties. Therefore The service life is very short in the inner wall of the oil pumping pipeline with harsh environment. Therefore, it is imperative to develop a functional coating with integrated functions of high-efficiency anti-corrosion and anti-scaling. [0003] Graphene has a special lamellar structure, which has a good physical shielding effect on the diffusion of water, oxygen and ions, and can increase the penetration distance of corrosive media in the coating, thereby achieving the anti-corrosion function of metal materials. At present, the appli...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D163/00C09D5/08C09D5/24C09D7/63C09D7/65
CPCC08K2003/385C09D5/08C09D5/24C09D7/63C09D7/65C09D163/00C08L79/02C08K13/06C08K9/06C08K9/04C08K3/042C08K3/38C08K5/09
Inventor 王池嘉汪怀远刘战剑朱艳吉
Owner NORTHEAST GASOLINEEUM UNIV
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