Anticorrosive paint and preparation method thereof

A technology of anti-corrosion coatings and polymers, applied in the direction of anti-corrosion coatings, coatings, etc., can solve the problems of harmful effects on the environment, poor environmental resistance of anti-corrosion coatings, easy aging and failure, etc., and achieve the effect of reducing the content

Active Publication Date: 2016-03-02
CASIC DEFENSE TECH RES & TEST CENT +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Currently commonly used anti-corrosion coatings contain a large amount of organic matter (VOC), which has harmful effects on the environment, and is limite...

Method used

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  • Anticorrosive paint and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] 1) Take 2g graphite powder, 4.5g sodium nitrate and 30mL concentrated sulfuric acid. After stirring for 15min in an ice water bath, add 10g potassium permanganate to the mixed solution several times. After adding potassium permanganate for about 15min, remove the ice water bath. , And use a warm water bath for about 35 ℃ to keep for 4 hours; then continue to drip 115mL of deionized water to the mixed solution, about 30 minutes after dripping the deionized water, then heat the mixed solution to 98 ℃ and keep it for about 15 minutes; then, remove the heating, Add deionized water dropwise to the mixed solution to dilute it to 350 mL (about 180 mL), continue to stir for 30 minutes and then add 3.5 mL of hydrogen peroxide. After reacting for 15 minutes, centrifuge the mixed solution to wash the centrifuged product with water, and then put the washed centrifuged product at 40 Vacuum drying at ℃ for 24h to obtain graphite oxide (GTO).

[0026] The prepared 1.5 g GTO was added to ...

Embodiment 2

[0031] 1) Take 7g graphite powder, 2g sodium nitrate and 22mL concentrated sulfuric acid, stir under ice water bath for 10 minutes, add 8.5g potassium permanganate to the mixed solution several times, add potassium permanganate in about 13min, then remove the ice water bath , And use a warm water bath to keep about 38 ℃ for 3.5 hours; then continue to drop 100mL deionized water to the mixed solution, about 35 minutes to finish the dripping of deionized water, then heat the mixed solution to 96 ℃ and keep it for about 13 minutes; then remove the heating , Add deionized water dropwise to the mixed solution to dilute to 360mL, continue to stir for 35 minutes and then add 6mL of hydrogen peroxide. After 12 minutes of reaction, centrifuge the mixed solution, wash the centrifuged product with water, and then vacuum dry the washed centrifuged product at 45°C for 22h. Graphite oxide (GTO) is obtained.

[0032] The prepared 2g GTO was added to 100 mL of pH=13 sodium hydroxide solution for...

Embodiment 3

[0037] 1) Take 1.7g graphite powder, 5.5g sodium nitrate and 18mL concentrated sulfuric acid, stir for 18min in an ice-water bath, add 5g potassium permanganate to the mixed solution several times, add potassium permanganate in about 17min, then remove the ice Water bath, and use a warm water bath for about 40 ℃ to keep for 5 hours; then continue to drip 120mL deionized water to the mixed solution, drip the deionized water for about 40 minutes, then heat the mixed solution to 98 ℃ and keep it for about 15 minutes; then remove the heating , Add deionized water dropwise to the mixed solution to dilute to 340mL, then continue to stir for 30 minutes and then add 1.5mL of hydrogen peroxide. After 15 minutes of reaction, centrifuge the mixed solution, wash the centrifuged product with water, and then dry the washed centrifuged product at 35°C for 25h. Graphite oxide (GTO) is obtained.

[0038] The prepared 1.7 g of GTO was added to 100 mL of pH=12 sodium hydroxide solution for ultrason...

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Abstract

The invention discloses anticorrosive paint and a preparation method thereof. The method comprises the steps that a polymer monomer is dispersed into an organic acid water solution, an oxidized graphene water solution is added, stirring and ultrasonic treatment are performed, then ammonium persulphate is added continuously, filtering is performed after stirring is performed for 6-18 h, a filtered product is washed with water and washed with alcohol repeatedly till the cleanout fluid is neutral, and precursor powder is obtained after drying is performed; 2, the precursor powder, pigment, epoxy resin, a curing agent and water are mixed to obtain a sizing agent, and stirring is performed to obtain a suspension, so that the anticorrosive paint is obtained. According to the anticorrosive paint and the preparation method thereof, on the basis of conducting polymer intercalation oxidized graphene, the nanometer environment-friendly coating material with the water-soluble conducting polymer-sheet material of the sandwich structure as the body material is obtained, and the organic content is greatly lowered.

Description

Technical field [0001] The invention relates to the technical field of anti-corrosion materials, in particular to an anti-corrosion coating for aluminum alloy anti-corrosion treatment and a preparation method thereof. Background technique [0002] Currently commonly used anti-corrosion coatings contain a large amount of organic compounds (VOC), which have harmful effects on the environment, and are limited to the characteristics of the organics themselves. Anti-corrosion coatings have poor environmental resistance and are prone to aging and failure after long-term use. In addition, the existing coatings usually reduce the corrosion current of aluminum alloy (for example, 2A12) from 10 -6 The power is reduced by 1 to 2 orders of magnitude. Some reports indicate that the corrosion current can be reduced to 10 -9 About the power. However, when potential fluctuations occur near the open-circuit potential of the metal, as the potential deviates from the initial potential, the corrosio...

Claims

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Application Information

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IPC IPC(8): C09D179/02C09D165/00C09D179/04C09D149/00C09D5/08C09D7/12C08G73/02C08G61/12C08G73/06C08F38/02
Inventor 刘迅郭方王山河宫锡生仲莹莹朱琳
Owner CASIC DEFENSE TECH RES & TEST CENT
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