Heavy-duty anticorrosive polyaniline coating and preparation method thereof

A polyaniline and heavy-duty anti-corrosion technology, applied in anti-corrosion coatings, polyester coatings, polyurea/polyurethane coatings, etc., can solve the problems of inapplicable anti-corrosion treatment of large metal parts, economic benefits to be improved, and inapplicability to industrial production. , to achieve the effect of improving the intercalation effect, enhancing the anti-corrosion performance and reducing the surface energy

Active Publication Date: 2012-08-15
XIAMEN UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, because polyaniline is insoluble and infusible, its wide application in technology is limited.
Existing polyaniline anti-corrosion coatings mainly contain the following two types: (1) Electrochemical formation of polyaniline coatings, but this method is not suitable for on-site construction and anti-

Method used

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  • Heavy-duty anticorrosive polyaniline coating and preparation method thereof
  • Heavy-duty anticorrosive polyaniline coating and preparation method thereof
  • Heavy-duty anticorrosive polyaniline coating and preparation method thereof

Examples

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Example Embodiment

[0044] Example 1

[0045] Step 1: Add 50g of montmorillonite to 500mL of distilled water, stir evenly at a speed of 800r / min with a mixer at 60°C to form a suspension system, and let it stand for 24h to remove non-swelling impurities in the montmorillonite. Add a small amount of 1mol / L hydrochloric acid solution to the suspension, control the pH of the suspension at 1 to 3, and perform proton activation to form a suspension for use; add 5g of bis[N,N-dimethyldodecyl ( Octadecyl) amide] ethyl diammonium chloride was dissolved in 50 mL of distilled water and slowly added dropwise to the suspension, while stirring for 4 hours, and then centrifuged to obtain an intercalated organic activated montmorillonite suspension , Filter, vacuum dry at 60℃ for 12h, grind and pass through 800 mesh sieve to obtain organic activated montmorillonite powder with intercalation structure with particle size of 15-20μm;

[0046] Step 2: Add 50g of organic activated montmorillonite to 500ml of 1mol / L hydr...

Example Embodiment

[0052] Example 2

[0053] Step 1. Add 50 g of montmorillonite to 500 mL of distilled water, stir uniformly at a speed of 800 r / min with a mixer at 60° C. to form a suspension system, and let it stand for 24 hours to remove non-swelling impurities in the montmorillonite. Add a small amount of 1mol / L sulfuric acid solution to the suspension, control the pH of the suspension at 1 to 3, and perform proton activation to form a suspension for later use; then add 5g of bis(2-hydroxy-5-nonylphenyl) Methane-oxygen-bis(2-hydroxypropyltrihydroxyethyl)ammonium chloride was dissolved in 50mL of distilled water and slowly added dropwise to the standby suspension, while stirring for 3h, and then centrifuged to obtain the organic activation of the intercalation structure The montmorillonite suspension is allowed to stand, filter, and vacuum-dried at 60°C for 20 hours. After grinding, it is passed through an 800 mesh sieve to obtain an organically activated montmorillonite powder with an intercal...

Example Embodiment

[0058] Example 3

[0059] Step 1. Add 50 g of montmorillonite to 500 mL of distilled water, stir uniformly at a speed of 800 r / min with a mixer at 60° C. to form a suspension system, and let it stand for 24 hours to remove non-swelling impurities in the montmorillonite. Add a small amount of 1mol / L sulfosalicylic acid solution to the suspension, control the pH of the suspension at 1 to 3, perform proton activation, and form a suspension for later use; then add 5g of ethylene [(tetradecyl Dimethyl / hexadecamidopropyl dimethyl ammonium chloride] was dissolved in 50mL of distilled water and slowly added dropwise to the standby suspension, while stirring for 4h, and then centrifuged to obtain the organic activation of the intercalation structure The montmorillonite suspension is allowed to stand, filter, and vacuum-dried at 60°C for 24 hours. After grinding, it is passed through an 800-mesh sieve to obtain an organic activated montmorillonite powder with an intercalation structure wit...

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Abstract

The invention relates to anticorrosive coating and provides the heavy-duty anticorrosive polyaniline coating with strong anticorrosive property and antifouling and antistatic capabilities, and a preparation method of the heavy-duty anticorrosive polyaniline coating. The heavy-duty anticorrosive polyaniline coating comprises the following raw materials according to weight percent: 8-15% of polyaniline and montmorillonite composite material, 10-15% of mica powder, 10-15% of talcum powder, 15-20% of quartz powder, 30-40% of matrix resin, 0-5% of modified resin, 0-3% of pigment, 0.5-1.0% of defoaming agent, 0.5-1.0% of dispersant, 0.5-1.0% of leveling agent, 0.5-1.0% of film-forming agent and 30-40% of solvent. According to the preparation method, the polyaniline and montmorillonite composite material is prepared firstly through the steps: pretreatment of montmorillonite, in-situ intercalation reaction of polyaniline and synthesis of a polyaniline and montmorillonite intercalation compound; and finally, the heavy-duty anticorrosive polyaniline coating is prepared.

Description

technical field [0001] The invention relates to an anticorrosion coating, in particular to a heavy anticorrosion coating mainly composed of polyaniline and montmorillonite intercalation compound and a preparation method thereof. Background technique [0002] As we all know, the harm and loss caused by metal corrosion to human beings is astonishing. According to statistics, the annual production of metals due to corrosion and rust is about 20% to 40% of the annual output in the world, and the resulting economic losses are about 1 trillion US dollars. According to incomplete statistics, the annual economic losses caused by corrosion in my country account for about 4% of the gross national product, exceeding the sum of the losses caused by fire, wind disasters and earthquakes, reaching at least 20 billion yuan. The development and application of metal anti-corrosion technology is imminent. [0003] Among various anti-corrosion technologies, coating anti-corrosion coatings is t...

Claims

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Application Information

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IPC IPC(8): C09D179/02C09D163/00C09D127/12C09D175/04C09D161/20C09D133/00C09D167/08C09D167/00C09D161/24C09D161/28C09D161/06C09D5/08C09D7/12
Inventor 许一婷郭一宾王诗榕戴李宗张龙胡建林钟丽娜赵宁何凯斌曾碧榕罗伟昂
Owner XIAMEN UNIV
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