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Preparation method and application of modified anti-corrosion super-hydrophobic integrated coating

A technology of super-hydrophobic and anti-corrosion materials, applied in anti-corrosion coatings, coatings, etc., can solve the problem of not meeting the service requirements of advanced equipment protection, and achieve the effects of economically feasible anti-corrosion super-hydrophobicity, improving dispersibility, and prolonging service life.

Inactive Publication Date: 2021-02-02
SUN YAT SEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, the marine environment involves many complex factors such as meteorology, fluid, physics, chemistry, and biology. With the gradual deepening of the development of the marine engineering equipment industry, traditional spraying protective materials (such as aluminum, zinc, zinc-aluminum alloy, zinc-aluminum-magnesium ( Rare earth) alloys, cermets and ceramic coatings, etc.) have gradually been unable to meet the service requirements of advanced equipment protection in harsh marine environments

Method used

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  • Preparation method and application of modified anti-corrosion super-hydrophobic integrated coating
  • Preparation method and application of modified anti-corrosion super-hydrophobic integrated coating
  • Preparation method and application of modified anti-corrosion super-hydrophobic integrated coating

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Embodiment 1

[0063] Embodiment 1 A kind of preparation method of modified anticorrosion superhydrophobic integrated coating comprises the following steps:

[0064] (1) Preparation of graphene-titanium dioxide composite:

[0065] S11. Weigh 0.1 g of graphene and disperse it in 80 mL of organic solvent (absolute ethanol), and disperse it ultrasonically for 2 hours to obtain a graphene dispersion;

[0066] S12. Weigh 10mL of tetrabutyl titanate, 60mL of absolute ethanol and 10mL of deionized water to form a mixed solution, fully stir for 20min at room temperature with a magnetic stirrer at 200rpm, and slowly add glacial acetic acid dropwise to the stirred solution to adjust the pH to 5.5 , to slow down the hydrolysis process to obtain a hydrolysis solution;

[0067] S13. Mix the graphene dispersion and the hydrolysis solution, mechanically stir it at room temperature for 1.5 hours, put it into a polytetrafluoroethylene reaction kettle, and conduct a solvothermal reaction at 140° C. for 8 hou...

Embodiment 2

[0079] Embodiment 2 A kind of preparation method of modified anticorrosion superhydrophobic integrated coating comprises the following steps:

[0080] (1) Preparation of graphene-titanium dioxide composite:

[0081] S11. Weigh 0.15g of graphene and disperse it in 80mL of organic solvent (absolute ethanol), and ultrasonically disperse it for 2h to obtain a graphene dispersion;

[0082] S12. Weigh 15mL of tetrabutyl titanate, 90mL of absolute ethanol and 15mL of deionized water to form a mixed solution, fully stir for 20min at room temperature with a magnetic stirrer at 300rpm, and slowly add glacial acetic acid dropwise to the stirred solution to adjust the pH to 5.6 , to slow down the hydrolysis process to obtain a hydrolysis solution;

[0083] S13. Mix the graphene dispersion with the hydrolysis solution, stir mechanically at room temperature for 1.5 h, put it into a polytetrafluoroethylene reaction kettle, and conduct a solvothermal reaction at 180° C. for 12 h; after cooli...

Embodiment 3

[0095] Embodiment 3 A kind of preparation method of modified anticorrosion superhydrophobic integrated coating comprises the following steps:

[0096] (1) Preparation of graphene-titanium dioxide composite:

[0097] S11. Weigh 0.2g graphene and disperse it in 80mL organic solvent (absolute ethanol), and ultrasonically disperse it for 2h to obtain a graphene dispersion;

[0098] S12. Weigh 20mL of tetrabutyl titanate, 120mL of absolute ethanol and 20mL of deionized water to form a mixed solution, fully stir for 20min at room temperature with a magnetic stirrer at 300rpm, and slowly add glacial acetic acid dropwise to the stirred solution to adjust the pH to 6.0 , to slow down the hydrolysis process to obtain a hydrolysis solution;

[0099] S13. Mix the graphene dispersion with the hydrolysis solution, stir mechanically at room temperature for 1.5 hours, put it into a polytetrafluoroethylene reaction kettle, and conduct a solvothermal reaction at 180° C. for 6 hours; after cool...

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Abstract

The invention belongs to the technical field of preparation of anticorrosive coatings, and particularly relates to a preparation method and application of a modified anticorrosive super-hydrophobic integrated coating, the method comprises the following steps: respectively preparing a graphene titanium dioxide compound from graphene and tetrabutyl titanate, preparing a zinc-aluminum hydrotalcite anticorrosive material from sodium metavanadate, zinc chloride and aluminum chloride, preparing a PDMS organic emulsion from polydimethylsiloxane and tetrahydrofuran, then performing surface modification on the graphene titanium dioxide compound through dopamine hydrochloride and a zinc-aluminum hydrotalcite anticorrosive material to obtain a dopamine modified composite material, and finally, preparing the modified anticorrosive super-hydrophobic integrated coating from the dopamine modified composite material and a PDMS organic emulsion. Performance tests show that compared with a conventionalmarine anticorrosive coating, the coating prepared by the invention has better anticorrosive and super-hydrophobic effects, is applied to the field of marine corrosion prevention, and can effectivelyprolong the service life of the coating on a protective substrate.

Description

technical field [0001] The invention belongs to the technical field of anticorrosion coating preparation, and in particular relates to a preparation method and application of a modified anticorrosion superhydrophobic integrated coating. Background technique [0002] The ocean is an important strategic space for the sustainable development of mankind and a strategic commanding height for countries in the world to gain competitive advantages. The development of marine economy is inseparable from the large-scale application of marine engineering equipment. Marine engineering equipment is the cornerstone of the development of marine economy and an important part of promoting and implementing the national marine strategy. However, marine equipment has served in the harsh marine environment for a long time, and what cannot be avoided is the corrosion damage, abrasion failure and biofouling of marine engineering materials, which bring huge economic losses. Marine corrosion behavio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D183/04C09D5/08C09D7/61C09D7/62
CPCC08K2003/2241C09D5/08C09D183/04C09D7/61C09D7/62C08K13/06C08K9/04C08K3/042C08K3/22C08K3/26
Inventor 刘法谦赖宏达胡雅辉罗舒文谭旗清林美金郭辉杨皓程
Owner SUN YAT SEN UNIV
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