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A kind of carboxyl-containing polyphenolic compound secondary doping polyaniline epoxy resin coating and preparation method thereof

A polyaniline epoxy resin, secondary doping technology, applied in the field of coatings, can solve the problems of solvent-based coating pollution, polyaniline dispersion, poor stability, etc., to improve corrosion resistance, reduce viscosity, improve dispersion sexual effect

Active Publication Date: 2021-12-10
吉林省陆柒肆伍贰科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are many doped polyaniline coatings in the prior art, but most of them are solvent-based coatings and water-based coatings. The pollution of solvent-based coatings is serious, and the dispersion and stability of polyaniline in water-based coatings are not good.

Method used

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  • A kind of carboxyl-containing polyphenolic compound secondary doping polyaniline epoxy resin coating and preparation method thereof
  • A kind of carboxyl-containing polyphenolic compound secondary doping polyaniline epoxy resin coating and preparation method thereof
  • A kind of carboxyl-containing polyphenolic compound secondary doping polyaniline epoxy resin coating and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] 1. Synthesis of polyaniline:

[0035] Preparation of doped polyaniline once:

[0036] Preparation of liquid C: Add 4.65g of aniline monomer into 200mL of dichloroethane, and stir evenly;

[0037]Preparation of liquid D: Dissolve 20g of p-toluenesulfonic acid in 400mL of aqueous solution, then add 11.4g of ammonium persulfate into the aqueous solution and stir evenly; carefully transfer liquid C (liquid D) into liquid D (liquid C) and keep the reaction The temperature is 0°C, stirring slowly, after 24 hours, the reaction is complete, the product obtained is washed with deionized water until neutral, then washed with ethanol to obtain the product, washed with deionized water until neutral, washed with ethanol for 3 times, suction filtered and dried Obtain a p-toluenesulfonic acid doped polyaniline product;

[0038] Preparation of intrinsic polyaniline:

[0039] Put the polyaniline obtained by one-time doping into a sufficient amount of 0.1mol / L ammonia solution, stir i...

Embodiment 2

[0049] 1. Synthesis of polyaniline:

[0050] Preparation of doped polyaniline once:

[0051] Prepare liquid C: add 4.65g of aniline monomer and 5.4g of p-phenylenediamine into 250mL of toluene, and stir well;

[0052] Preparation of liquid D: Add 27.36g of ammonium persulfate into 400mL of 1M hydrochloric acid aqueous solution and stir evenly; carefully transfer liquid C (liquid D) into liquid D (liquid C), keep the reaction temperature at 0°C, and stir slowly. After 24 hours, the reaction Complete, wash the obtained product with deionized water to neutrality, then rinse with ethanol to obtain the product, wash with deionized water to neutrality, then rinse with ethanol for 3 times, filter with suction and dry to obtain a polyaniline product doped with hydrochloric acid once;

[0053] Preparation of intrinsic polyaniline:

[0054] Put a certain amount of polyaniline doped once into a sufficient amount of 0.1mol / L ammonia solution, stir evenly and let it stand for 2 hours. Af...

Embodiment 3

[0064] 1. Synthesis of polyaniline:

[0065] Preparation of doped polyaniline once:

[0066] Prepare liquid C: add 4.65g of aniline monomer into 250mL of chloroform, and stir evenly;

[0067] Preparation of liquid D: Dissolve 20g of citric acid in 400mL of aqueous solution, then add 11.4g of ammonium persulfate into the aqueous solution, and stir evenly; carefully transfer liquid C (liquid D) into liquid D (liquid C), and keep the reaction temperature at Stir slowly at 0°C. After 24 hours, the reaction is complete. Wash the obtained product with deionized water to neutrality, then rinse with ethanol to obtain the product, wash with deionized water to neutrality, then rinse with ethanol for 3 times, suction filter and dry to obtain lemon Acid doped polyaniline product once;

[0068] Preparation of intrinsic polyaniline:

[0069] Put a certain amount of polyaniline doped once into a sufficient amount of 0.1mol / L ammonia solution, stir evenly and let it stand for 2 hours. Afte...

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Abstract

The invention belongs to the technical field of coatings, and discloses a polyaniline epoxy resin coating twice doped with carboxyl-containing polyphenol compounds and a preparation method thereof. The carboxyl-containing polyphenolic compound secondary doping polyaniline epoxy resin coating comprises a component A coating body and a B component coating body, and the mass ratio of the A component coating body to the B component coating body is 4- 5:1; wherein, the A-component coating body contains epoxy resin, carboxyl-containing polyphenolic compound doped polyaniline, filler, leveling agent, anti-settling agent, thixotropic agent, dispersant, defoamer, xylene and n-butanol; the B-Part coating body contains curing agent and epoxy thinner. The coating contains carboxyl-containing polyphenolic compounds doped with polyaniline. Polyphenols can improve the compatibility of polyaniline with substrates and resins, facilitate the dispersion of polyaniline, and improve the adhesion of the coating. The resulting coating is a high-solid coating , good dispersion, good anti-corrosion performance.

Description

technical field [0001] The invention relates to the technical field of coatings, in particular to a polyaniline epoxy resin coating twice doped with carboxyl-containing polyphenolic compounds and a preparation method thereof. Background technique [0002] The damage of metal materials by the action of the surrounding medium is called metal corrosion, and the rust of metal is the most common form of corrosion. According to statistics, the annual loss of steel due to metal corrosion accounts for about 10-20% of the steel output of the year, and indirect losses such as production stoppages and power outages caused by metal corrosion accidents are even more incalculable. During the use of metal materials, corrosion seriously restricts the development of construction engineering, marine engineering and shipping. There are many methods of corrosion protection, such as electrochemical protection, corrosion inhibitor protection, organic coating protection, etc. Among them, the use...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D163/00C09D179/02C09D5/08C08G73/02
CPCC09D163/00C09D5/08C08G73/0266C08L2205/025C08L2205/03C08L63/00C08L79/02
Inventor 信欣
Owner 吉林省陆柒肆伍贰科技有限公司
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