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Water-based anticorrosive coating of nano montmorillonite and polypyrrole complex and preparation method thereof

A nano-montmorillonite, anti-corrosion coating technology, applied in anti-corrosion coatings, polyester coatings, polyurea/polyurethane coatings, etc., achieves the effects of simple preparation method, enhanced anti-corrosion performance, and improved electrical conductivity

Active Publication Date: 2013-08-07
XIAMEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In the existing reports, there is no use of nano-montmorillonite and polypyrrole composites with intercalation structure to prepare water-based coatings with high anti-corrosion performance

Method used

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  • Water-based anticorrosive coating of nano montmorillonite and polypyrrole complex and preparation method thereof
  • Water-based anticorrosive coating of nano montmorillonite and polypyrrole complex and preparation method thereof
  • Water-based anticorrosive coating of nano montmorillonite and polypyrrole complex and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Step 1: Add 1 g of montmorillonite to 20 mL of ethanol, stir evenly with a mixer at a speed of 800 r / min at 60 ° C to form a suspension system, and let it stand for 24 hours to remove non-swellable impurities in the montmorillonite. Then add 0.8mL of sulfuric acid to the suspension to form a suspension for later use; then dissolve 2mL of ethylenediamine in 15mL of ethanol solution and slowly add it dropwise to the spare suspension, stir for 1 hour while adding, and then centrifuge to obtain intercalation The nano-organic activated montmorillonite suspension was allowed to stand overnight, vacuum-dried at 60°C for 12 hours, ground and passed through a 100-mesh sieve to obtain nano-organic activated montmorillonite powder with a particle size of 10-100nm and an intercalation structure.

[0043] Step 2, under ice bath condition, 0.8gFeCl 3 ·6H 2 O was dissolved in 20 mL of twice distilled water, 4.5 g of tristyrylphenol polyoxyethylene ether phosphate was added to form a ...

Embodiment 2

[0047] Step 1. Add 12g of montmorillonite to 40mL of ethanol, 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 10mL of sulfuric acid to the suspension to form a suspension for subsequent use; then add 15mL of Ce(SO 4 ) 2 Dissolved in 200mL DMF solution and slowly added dropwise to the standby suspension, stirred for 3h while adding dropwise, and then centrifuged to obtain nano-organic activated montmorillonite suspension with intercalation structure, let stand overnight, and vacuum dried at 60°C for 20h, After being ground, it passes through a 100-mesh sieve to obtain nano organic activated montmorillonite powder with a particle size of 10-100nm and an intercalation structure.

[0048] Step 2, under ice bath condition, 15gFeCl 3 ·6H 2 O was dissolved in 50mL double-distilled water, and 11.5g of bis-alkoxy bisphosphate was added to form a suspensio...

Embodiment 3

[0052] Step 1. Add 25g of montmorillonite to 60mL of ethanol, 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. Then add 25mL of sulfuric acid to the suspension to form a suspension for later use; then dissolve 30mL of triethylamine in 65mL of ethanol solution and slowly add dropwise to the spare suspension, stir for 3 hours while adding, and then centrifuge to obtain an intercalated structure The nano-organic activated montmorillonite suspension was allowed to stand overnight, vacuum-dried at 60°C for 24 hours, ground and passed through a 100-mesh sieve to obtain nano-organic activated montmorillonite powder with an intercalation structure with a particle size of 10-100 nm.

[0053] Step 2, under ice bath condition, 28gFe 2 (SO 4 ) 3 Dissolve in 60mL double-distilled water, add 10g of isooctyl alcohol polyoxyethylene ether phosphate to form a suspensio...

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Abstract

The invention discloses a water-based anticorrosive coating of nano montmorillonite and polypyrrole complex and a preparation method thereof, and relates to a coating. The coating comprises the following raw materials in part by weight: 1 to 50 parts of montmorillonite, 20 to 300 parts of solvent, 0.8 to 55 parts of protonic acid, 0.07 to 18.5 parts of organic active agent, 8.5 to 50.6 parts of ferric trichloride hexahydrate or ferric sulfate, 0.8 to 56 parts of pyrrole, 4.5 to 50 parts of surfactant, 10 to 55 parts of resin matrix, 0 to 10 parts of modified resin, 0.34 to 5.6 parts of neutralizing agent, 0.6 to 10 parts of pigment, 20 to 100 parts of deionized water, 0.05 to 1.2 parts of defoaming agent, 0.22 to 1.34 parts of anti-settling agent, 0.13 to 1.15 parts of dispersant, 0.02 to1.08 parts of flatting agent and 0.05 to 1.04 parts of film-forming auxiliary agent. The method comprises the following steps of: preparing the nano montmorillonite and polypyrrole complex, namely pre-treating the montmorillonite and synthesizing the nano montmorillonite and polypyrrole complex; and preparing the coating.

Description

technical field [0001] The invention relates to a coating, in particular to a low-cost, high-corrosion-resistant nano-montmorillonite-polypyrrole composite water-based anti-corrosion coating and a preparation method thereof. Background technique [0002] In chemical, petroleum, food, light industry and other industries, most of the equipment and pipelines are often damaged by various corrosive media. In order to completely isolate metal equipment from corrosive media, prevent it from being corroded and abrasive, and improve the corrosion resistance, wear resistance, safety and service life of the equipment, people usually use various anti-corrosion materials to make covering layers or linings. Among various anti-corrosion technologies, coating anti-corrosion technology is the most widely used, because it is simple in construction, wide in adaptability, not restricted by equipment area and shape, low in recoating and repair costs, and coating anti-corrosion can also be combin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D163/00C09D175/04C09D161/20C09D133/00C09D167/08C09D167/00C09D179/04C09D7/12C09D5/08
Inventor 戴李宗邓胡军郭一宾陈光剑许一婷罗伟昂
Owner XIAMEN UNIV
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