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Scale inhibition anticorrosion functional coating, method for preparing same and method for applying scale inhibition anticorrosion functional coating

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

Active Publication Date: 2018-12-25
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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  • Scale inhibition anticorrosion functional coating, method for preparing same and method for applying scale inhibition anticorrosion functional coating

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 complete, 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 o...

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 scale inhibition anticorrosion functional coating, a method for preparing the same and a method for applying the scale inhibition anticorrosion functional coating. The scale inhibition anticorrosion functional coating and the methods have the advantages that two types of sheet structures with different degrees of electric conductivity are led into the scale inhibition anticorrosion functional coating in AB component forms, polyaniline is doped by acidic scale inhibitors and perfluorocaprylic acid, and accordingly the surfaces of the polyaniline contain hydrophilic groups and hydrophobic groups; the hydrophilic groups and the hydrophobic groups have scale inhibition performance, the addition amounts of two types of auxiliaries can be adjusted, accordingly, the hydrophilic and hydrophobic performance of the surfaces of fillers can be controlled, the influence of the electric conductivity of graphene oxide on the anticorrosion performance of coatings can be effectively prevented, and the problem of accelerated corrosion of graphene due to the electric conductivity can be 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 Applications(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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