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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: 2015-07-22
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 method for preparing water-based polyaniline anticorrosive paint:

[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 1200-2000 rpm for 1 to 3 hours, sand for 0.5 to 2 hours, then, Add filler, non-ionic surfactant, defoamer and water-based dispersant, continue sanding for 3 to 5 hours, filter with 200 mesh filter cloth to obtain paint component A;

[0060] 2) Preparation of component B:

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

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

[0063] Spray the water-based polya...

Embodiment 1

[0073] 1) Preparation of component A:

[0074] Add 26 grams of epoxy resin E44, 2.6 grams of water-based film-forming cosolvent 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 In the medium, stirring was performed at a speed of 2000 rpm for 1.5 hours, and then sanded for 1 hour. Then, add 1.5 g of talc powder, 3.5 g of precipitated barium sulfate, 2.5 g of calcium carbonate, 0.2 g of non-ionic surfactant OP-10, 0.8 g of defoamer BYK055 and 0.5 g of dispersant BYK163, and continue sanding for 4 hours. Filter with 200 mesh filter cloth to obtain coating A component.

[0075] 2) Preparation of component B:

[0076] 40 grams of water-based curing agent H202B, 32 grams of deionized water, and 1.5 grams of leveling agent BYK366 were stirred in a sand mill at a speed of 1800 rpm for 1.5 hours, and filtered with a 200 mesh filter cloth to obtain coating B comp...

Embodiment 2

[0080] 1) Preparation of component A:

[0081] Add 45 grams of epoxy resin E51, 10 grams of water-based film-forming cosolvent 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 , Stir at 1200rpm for 3 hours, then sand mill for 2 hours. Then, add 12.5 g talc powder, 10.5 g precipitated barium sulfate, 7 g calcium carbonate, 0.8 g non-ionic surfactant Span-60, 1.5 g defoamer BYK088 and 2.5 g dispersant BYKP-105, and continue sanding for 5 hours , Filter with 200 mesh filter cloth to obtain paint component A.

[0082] 2) Preparation of component B:

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

[0084] 3) Mix component A and component B evenly at a weight...

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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 specifically relates to a water-based polyaniline anticorrosive coating and a preparation method thereof. Background technique [0002] The direct economic loss caused by metal corrosion in our country reaches hundreds of billions every year. Therefore, the study of metal anticorrosive 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 during use, which will cause serious damage to the environment. In particular, its anti-scratch ability is relatively poor. 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-corrosion coating. However, with ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
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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