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-corrosion treatment of large metal parts, nor is it suitable for industrial production
(2) Blend polyaniline with commonly used film-forming resins to prepare composite coatings. This method overcomes the shortcomings of electrochemical polymerization methods and is currently the main research field. improve

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

Experimental program
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Effect test

Embodiment 1

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

[0046] Step 2: Add 50g of organic...

Embodiment 2

[0053] Step 1. Add 50g of montmorillonite to 500mL of distilled water, stir evenly with a mixer at a speed of 800r / min at 60°C to form a suspension system, and let it stand for 24 hours to remove non-swellable impurities in the montmorillonite. Add a small amount of 1mol / L sulfuric acid solution into the suspension, control the pH value of the suspension at 1-3, carry out proton activation, and form a suspension for later use; then add 5g of bis(2-hydroxy-5-nonylphenyl) Dissolve methane-oxygen-bis(2-hydroxypropyltrihydroxyethyl)ammonium chloride in 50mL distilled water and slowly add it dropwise to the standby suspension, stir for 3 hours while adding it, and then centrifuge to obtain the organic activation of the intercalated structure The montmorillonite suspension was left to stand, filtered, vacuum-dried at 60°C for 20 hours, ground and passed through a 800-mesh sieve to obtain an organic activated montmorillonite powder with an intercalation structure with a particle size ...

Embodiment 3

[0059] Step 1. Add 50g of montmorillonite to 500mL of distilled water, stir evenly with a mixer at a speed of 800r / min at 60°C to form a suspension system, and let it stand for 24 hours to remove non-swellable impurities in the montmorillonite. Add a small amount of 1mol / L sulfosalicylic acid solution into the suspension, control the pH value of the suspension at 1 to 3, and perform proton activation to form a suspension for later use; dimethyl / hexadecylamidopropyl dimethyl)ammonium chloride] dissolved in 50mL distilled water and slowly added dropwise to the standby suspension, stirred for 4h while adding dropwise, and then centrifuged to obtain the organic activation of the intercalation structure The montmorillonite suspension was left to stand, filtered, vacuum-dried at 60°C for 24 hours, ground and passed through an 800-mesh sieve to obtain an organic activated montmorillonite powder with an intercalation structure with a particle size of 15-20 μm.

[0060]Step 2. Add 50g ...

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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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