Graphene antiseptic coating and preparation method thereof

Abstract

The invention discloses a graphene antiseptic coating. Raw materials of the graphene antiseptic coating comprises, in parts by weight, 30-70 parts of resin, 3-5 parts of graphene-modified carbon fiberpowder, 5-10 parts of zinc powder, 0.5-3 parts of a film-forming accelerator, 0.2-2 parts of a defoaming agent, 0.1-1 part of an auxiliary agent and 5-30 parts of water. Through the coating, the phenomenons of easily uneven dispersion and easy agglomeration caused by direct addition of graphene to the coating can be improved effectively, and meanwhile the corrosion resistance of the coating, theadhesion of the coating and the impact resistance and flexibility of the coating can be improved; and a preparation method of the graphene antiseptic coating has simple operation and easy industrialization.

Description

technical field

[0001] The invention relates to the technical field of anti-corrosion coatings, and specifically designs a graphene anti-corrosion coating and a preparation method thereof. Background technique

[0002] At present, oil and natural gas are the main energy sources in my country. Pipeline transportation is one of the main methods of oil and natural gas transportation, and most of them are buried pipeline transportation. Under the influence of soil environment, buried metal pipelines are prone to corrosion and damage, resulting in The leakage of oil and gas will cause serious consequences such as explosion, fire and environmental pollution. According to statistics, in recent years, the average annual economic loss caused by corrosion in the world is as high as 1 trillion U.S. dollars, which is about 6 times the sum of economic losses caused by natural disasters such as earthquakes, floods, and typhoons, accounting for 2% to 4% of the total gross national product. ...

Examples

preparation example Construction

[0026] A kind of preparation method of graphene anticorrosion coating, comprises the steps:

[0027] S1: Preparation of graphene oxide powder: the graphene oxide solid was prepared by the Hummer method, and the graphene oxide solid was ground and sieved to obtain graphene oxide powder with a particle size of 50-300 nm;

[0028] S2: Preparation of graphene-modified carbon fiber powder: Mix the graphene oxide powder and N,N-dimethylformamide in step S1, sonicate for 30 minutes until the suspension is uniform, add polyacrylonitrile, and reflux at 90°C to obtain the fiber Slurry, the weight ratio of graphene oxide powder to N,N-dimethylformamide is 1:2~4; use a spinning needle with an inner diameter of 1~2mm to draw the fiber slurry to 50cm 3 In the syringe, the polyacrylonitrile fiber was prepared by using an electrospinning device. The power supply voltage of the electrospinning device was 15-18KV, the distance from the needle tip to the collector was 20cm, the speed of the syri...

Embodiment 1

[0033] Proportioning each component by following raw material parts by weight:

[0034]

[0035] According to the ratio of the above-mentioned raw materials by weight, the resin, film-forming accelerator, defoamer, and auxiliary agent are mixed, stirred for 20 minutes under ultrasonic conditions, and the rotating speed is 500 rpm; Slowly add carbon fiber powder into the above mixture at a speed of 1200rpm, and stir ultrasonically for 30 minutes; under the condition of ultrasonic stirring, slowly add commercially available zinc powder into the mixture, the particle size of zinc powder is 2μm, and the speed is 1200-1500rpm , and ultrasonically stirred for 60 minutes to obtain a graphene anti-corrosion coating.

Embodiment 2

[0037] Proportioning each component by following raw material parts by weight:

[0038]

[0039]According to the ratio of the above-mentioned raw materials by weight, the resin, film-forming accelerator, defoamer, and auxiliary agent are mixed, stirred for 20 minutes under ultrasonic conditions, and the rotating speed is 600 rpm; The carbon fiber powder was slowly added to the above mixture at a speed of 1000rpm, and ultrasonically stirred for 30 minutes; under the condition of ultrasonic stirring, the commercially available zinc powder was slowly added to the mixture. Stir for 60min to obtain a graphene anticorrosion coating.

technical field

[0001] The invention relates to the technical field of anti-corrosion coatings, and specifically designs a graphene anti-corrosion coating and a preparation method thereof. Background technique

[0002] At present, oil and natural gas are the main energy sources in my country. Pipeline transportation is one of the main methods of oil and natural gas transportation, and most of them are buried pipeline transportation. Under the influence of soil environment, buried metal pipelines are prone to corrosion and damage, resulting in The leakage of oil and gas will cause serious consequences such as explosion, fire and environmental pollution. According to statistics, in recent years, the average annual economic loss caused by corrosion in the world is as high as 1 trillion U.S. dollars, which is about 6 times the sum of economic losses caused by natural disasters such as earthquakes, floods, and typhoons, accounting for 2% to 4% of the total gross national product. ...

Examples

preparation example Construction

[0026] A kind of preparation method of graphene anticorrosion coating, comprises the steps:

[0027] S1: Preparation of graphene oxide powder: the graphene oxide solid was prepared by the Hummer method, and the graphene oxide solid was ground and sieved to obtain graphene oxide powder with a particle size of 50-300 nm;

[0028] S2: Preparation of graphene-modified carbon fiber powder: Mix the graphene oxide powder and N,N-dimethylformamide in step S1, sonicate for 30 minutes until the suspension is uniform, add polyacrylonitrile, and reflux at 90°C to obtain the fiber Slurry, the weight ratio of graphene oxide powder to N,N-dimethylformamide is 1:2~4; use a spinning needle with an inner diameter of 1~2mm to draw the fiber slurry to 50cm 3 In the syringe, the polyacrylonitrile fiber was prepared by using an electrospinning device. The power supply voltage of the electrospinning device was 15-18KV, the distance from the needle tip to the collector was 20cm, the speed of the syri...

Embodiment 1

[0033] Proportioning each component by following raw material parts by weight:

[0034]

[0035] According to the ratio of the above-mentioned raw materials by weight, the resin, film-forming accelerator, defoamer, and auxiliary agent are mixed, stirred for 20 minutes under ultrasonic conditions, and the rotating speed is 500 rpm; Slowly add carbon fiber powder into the above mixture at a speed of 1200rpm, and stir ultrasonically for 30 minutes; under the condition of ultrasonic stirring, slowly add commercially available zinc powder into the mixture, the particle size of zinc powder is 2μm, and the speed is 1200-1500rpm , and ultrasonically stirred for 60 minutes to obtain a graphene anti-corrosion coating.

Embodiment 2

[0037] Proportioning each component by following raw material parts by weight:

[0038]

[0039]According to the ratio of the above-mentioned raw materials by weight, the resin, film-forming accelerator, defoamer, and auxiliary agent are mixed, stirred for 20 minutes under ultrasonic conditions, and the rotating speed is 600 rpm; The carbon fiber powder was slowly added to the above mixture at a speed of 1000rpm, and ultrasonically stirred for 30 minutes; under the condition of ultrasonic stirring, the commercially available zinc powder was slowly added to the mixture. Stir for 60min to obtain a graphene anticorrosion coating.

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