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Aqueous polyaniline anti-corrosive paint and preparation method thereof

A technology of water-based polyaniline and anti-corrosion coatings, applied in the field of coatings, can solve problems such as human harm and environmental pollution, and achieve excellent water resistance and anti-corrosion effects

Active Publication Date: 2012-10-03
HUNAN BENAN YADA NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a water-based polyaniline anti-corrosion coating and a preparation method thereof in order to solve the problems that the existing polyaniline anti-corrosion coatings pollute the environment and are harmful to the human body

Method used

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  • Aqueous polyaniline anti-corrosive paint and preparation method thereof
  • Aqueous polyaniline anti-corrosive paint and preparation method thereof
  • Aqueous polyaniline anti-corrosive paint and preparation method thereof

Examples

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preparation example Construction

[0057] The invention provides a kind of preparation method of waterborne polyaniline anticorrosion coating:

[0058] 1) Preparation of component A:

[0059] Add epoxy resin, water-based film-forming co-solvent, water-based polyaniline nanofiber powder and deionized water into the sand mill tank, stir at a speed of 1200-2000rpm for 1-3 hours, sand mill for 0.5-2 hours, and then, Add fillers, non-ionic surfactants, defoamers and water-based dispersants, continue sanding for 3 to 5 hours, and filter with 200-mesh filter cloth to obtain coating A component;

[0060] 2) Preparation of component B:

[0061] Stir the water-based curing agent, deionized water, and leveling agent in a sand mill tank at a speed of 1800-2500rpm for 0.5-2 hours, and filter with a 200-mesh filter cloth to obtain component B of the coating;

[0062] 3) Mix component A obtained in step 1) with component B obtained in step 2) in a weight ratio of 2 to 12:1 to obtain a water-based polyaniline anti-corrosion ...

Embodiment 1

[0073] 1) Preparation of component A:

[0074] Add 26 grams of epoxy resin E44, 2.6 grams of water-based film-forming co-solvent ethylene glycol butyl ether, 0.1 grams of water-based conductive polyaniline nanofiber powder (average fiber diameter 19nm) and 30 grams of deionized water into the sand mill tank , stirred at 2000 rpm for 1.5 hours, then sanded for 1 hour. Then, add 1.5 grams of talcum powder, 3.5 grams of precipitated barium sulfate, 2.5 grams of calcium carbonate, 0.2 grams of nonionic surfactant OP-10, 0.8 grams of defoamer BYK055 and 0.5 grams of dispersant BYK163, and continue sanding for 4 hours. 200 mesh filter cloths were filtered to obtain the coating A component.

[0075] 2) Preparation of component B:

[0076] Stir 40 grams of water-based curing agent H202B, 32 grams of deionized water, and 1.5 grams of leveling agent BYK366 in a sand mill tank at a speed of 1800 rpm for 1.5 hours, and filter through a 200-mesh filter cloth to obtain component B of the ...

Embodiment 2

[0080] 1) Preparation of component A:

[0081] Add 45 grams of epoxy resin E51, 10 grams of water-based film-forming co-solvent diethylene glycol butyl ether, 3 grams of water-based conductive polyaniline fiber powder (average fiber diameter, 22nm) and 50 grams of deionized water into the sand mill tank , stirred at 1200 rpm for 3 hours, then sanded for 2 hours. Then, add 12.5 grams of talcum powder, 10.5 grams of precipitated barium sulfate, 7 grams of calcium carbonate, 0.8 grams of nonionic surfactant Span-60, 1.5 grams of defoamer BYK088 and 2.5 grams of dispersant BYKP-105, and continue sanding for 5 hours , and filtered with a 200-mesh filter cloth to obtain component A of the coating.

[0082] 2) Preparation of component B:

[0083] Stir 65 grams of water-based curing agent H206B, 62 grams of deionized water, and 5 grams of leveling agent BYK333 in a sand mill jar at a speed of 2500 rpm for 2 hours, and filter with a 200-mesh filter cloth to obtain component B of the ...

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Abstract

The invention provides an aqueous polyaniline anti-corrosive paint and a preparation method thereof, belongs to the technical field of paint, and is used for solving the problem that the traditional polyaniline anti-corrosive paint causes pollution to the environment and harms the human body. The paint comprises a component A and a component B, wherein the component A comprises 22-45 parts by weight of epoxy resin, 2-10 parts by weight of aqueous film-forming cosolvent, 25-50 parts by weight of deionized water, 0.1-3 parts by weight of aqueous polyaniline nano fiber powder, 5-30 parts by weight of filler, 0.2-0.8 part by weight of non-ionic surfactant, 0.5-1.5 parts by weight of defoaming agent, 0.2-2.5 parts by weight of aqueous dispersant; and the component B comprises 35-65 parts by weight of aqueous curing agent, 28-62 parts by weight of deionized water and 0.2-5 parts by weight of leveling agent. The aqueous polyaniline anti-corrosive paint is a green and environment-friendly type anti-corrosive paint and has an excellent anti-corrosive property.

Description

technical field [0001] The invention belongs to the technical field of coatings, and in particular relates to a water-based polyaniline anticorrosion coating and a preparation method thereof. Background technique [0002] The direct economic losses caused by metal corrosion in our country amount to hundreds of billions of yuan every year. Therefore, research on metal anti-corrosion coatings has become an important topic. At present, the most commonly used anti-corrosion coatings are organic coatings containing chromium, lead, and molybdenum compounds. Although such coatings are relatively effective, they will release a large amount of toxic and harmful heavy metal ions of chromium, lead, and molybdenum during use, causing serious damage to the environment. pollution, especially its poor scratch resistance, once the coating is slightly scratched, the anti-corrosion effect will be greatly reduced. Another important anti-corrosion coating is zinc-rich organic or inorganic anti...

Claims

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Application Information

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IPC IPC(8): C09D163/00C09D179/02C09D7/12C09D5/08
Inventor 张红明李季王献红王佛松
Owner HUNAN BENAN YADA NEW MATERIALS
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