Graphene-reinforced heat-resistant anticorrosive paint and preparation method thereof

An anti-corrosion coating, graphene technology, applied in anti-corrosion coatings, coatings and other directions, can solve problems such as insufficient corrosion resistance, and achieve the effect of overcoming insufficient corrosion resistance

Inactive Publication Date: 2021-01-29
AVIC BEIJING INST OF AERONAUTICAL MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The object of the present invention is: propose a kind of formula of graphene enhanced heat-resistant anticorrosion coating, its preparation method and application method, so that overcome the problem that existing heat-resistant coating corrosion resistance is insufficient

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] (1) Preparation of epoxy silicone resin: bisphenol A epoxy resin and methylphenylsiloxane silicone resin are mixed according to the stoichiometric ratio of 1:1, and then dibutyltin dilaurate with a stoichiometric ratio of 1% is added . Heated to 120°C for 2h while stirring.

[0055] (2) Preparation of modified graphene: Weigh 0.1g graphene oxide, mix it with ethanol / water (30mL:10mL) solution, stir and ultrasonically disperse to obtain a homogeneous graphene oxide suspension, according to stoichiometric Add 0.1g of γ-aminopropyltriethoxysilane-modified graphene oxide, stir in an oil bath at 70°C and condense and reflux for 6 hours to make it react fully, then carry out vacuum filtration, use ethanol / water 50 mL of the mixed solution was washed 3 times, and subjected to critical freeze-drying to obtain amino-modified graphene;

[0056] (3) Ingredients: Weigh 64.9g of epoxy-modified silicone resin, 0.1g of amino-modified graphene, 32.4g of aluminum paste, 1g of polyacry...

Embodiment 2

[0064] (1) Preparation of epoxy silicone resin: bisphenol A epoxy resin and methylphenylsiloxane silicone resin are mixed according to the stoichiometric ratio of 2:1, and then dibutyltin dilaurate with a stoichiometric ratio of 2% is added . Heated to 120°C for 2h while stirring.

[0065] (2) Preparation of modified graphene: Weigh 0.1g graphene oxide, mix it with ethanol / water (30mL:10mL) solution, stir and ultrasonically disperse to obtain a homogeneous graphene oxide suspension, according to stoichiometric Add 0.1g of γ-aminopropyltriethoxysilane-modified graphene oxide, stir in an oil bath at 70°C and condense and reflux for 6 hours to make it react fully, then carry out vacuum filtration, use ethanol / water 50 mL of the mixed solution was washed 3 times, and subjected to critical freeze-drying to obtain amino-modified graphene;

[0066] (3) Ingredients: Weigh 63.9g of epoxy-modified silicone resin, 0.5g of amino-modified graphene, 33g of aluminum powder slurry, dispersa...

Embodiment 3

[0074] (1) Preparation of epoxy silicone resin: bisphenol A epoxy resin and methylphenylsiloxane silicone resin are mixed according to the stoichiometric ratio of 2:1, and then dibutyltin dilaurate with a stoichiometric ratio of 2% is added . Heated to 120°C for 2h while stirring.

[0075] (2) Preparation of modified graphene: Weigh 0.1g graphene oxide, mix it with ethanol / water (30mL:10mL) solution, stir and ultrasonically disperse to obtain a homogeneous graphene oxide suspension, according to stoichiometric Add 0.1g of γ-aminopropyltriethoxysilane-modified graphene oxide, stir in an oil bath at 70°C and condense and reflux for 6 hours to make it react fully, then carry out vacuum filtration, use ethanol / water 50 mL of the mixed solution was washed 3 times, and subjected to critical freeze-drying to obtain amino-modified graphene;

[0076] (3) Ingredients: Weigh 60g of epoxy-modified silicone resin, 0.5g of amino-modified graphene, 35g of aluminum powder slurry, dispersant...

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PUM

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Abstract

The invention relates to a graphene-reinforced heat-resistant anticorrosive paint and a preparation method thereof, and belongs to the technical field of surface treatment. The paint is formed by mixing a film forming substance, modified graphene, a filler, an auxiliary agent and a solvent, wherein the film forming substance is self-made epoxy organic silicon resin. The paint has high temperatureresistance and corrosion resistance. The problem of insufficient corrosion resistance of an existing heat-resistant paint is solved. Tests show that the paint is intact after the sample is subjected to heat preservation in an air environment at 650 DEG C for 4 hours, the weight gain rate of the sample is lower than 1%, and the sample can be soaked in distilled water for 30 days or more without corrosion after temperature resisting tests. After 1000 hours of neutral salt spray test, the paint does not fall off or blister.

Description

technical field [0001] The invention discloses a graphene-enhanced heat-resistant anticorrosion coating and a preparation method thereof, belonging to the technical field of surface treatment. Background technique [0002] Oxidative failure of metals at high temperatures and corrosion failures in acid, alkali and neutral salt environments are serious challenges in the industrial field. Applying protective coatings to substrate metal surfaces is an economical and effective means of protection, which can greatly Inhibits the damage to base metal caused by high temperature oxidation and corrosion in acid, alkali and neutral salt environment. Most heat-resistant coatings use silicate water glass as a binder, and add a system stabilizer to form a film to protect the coated surface against oxidation. However, in the fields of thermal power generation, ships, and aerospace, the use environment of metals is often both high temperature and high corrosion environment. Due to the high...

Claims

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Application Information

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IPC IPC(8): C09D183/10C09D5/08C09D7/62C09D7/65C08G77/42
CPCC08G77/42C08K2003/0812C08L2201/08C08L2205/02C08L2205/035C09D5/08C09D183/10C09D7/62C09D7/65C08L33/08C08L83/12C08L83/04C08K13/06C08K9/06C08K3/042C08K7/00C08K3/08
Inventor 田泳关振威李静王智勇
Owner AVIC BEIJING INST OF AERONAUTICAL MATERIALS
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