Check patentability & draft patents in minutes with Patsnap Eureka AI!

Modified polyaniline/epoxy resin composite anticorrosive paint and preparation method thereof

A water-based epoxy resin and anti-corrosion coating technology, which is applied in epoxy resin coatings, anti-corrosion coatings, coatings, etc., can solve problems such as poor adhesion, low water resistance, and poor stability, and achieve improved corrosion resistance and water resistance. High performance and good stability

Active Publication Date: 2020-11-06
SHAANXI UNIV OF SCI & TECH
View PDF4 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The product of the invention can realize the unity of compatibility, rigidity and bonding strength of anti-corrosion coatings, and solve the common technical problems in the industry such as poor stability, low water resistance and poor adhesion of polyaniline / water-based epoxy resin composite anti-corrosion coatings. Surface anti-corrosion, which can greatly improve the anti-corrosion ability and water resistance of metal

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Modified polyaniline/epoxy resin composite anticorrosive paint and preparation method thereof
  • Modified polyaniline/epoxy resin composite anticorrosive paint and preparation method thereof
  • Modified polyaniline/epoxy resin composite anticorrosive paint and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0034] A kind of preparation method of modified polyaniline / waterborne epoxy resin composite anticorrosion coating of the present invention, comprises the following steps:

[0035] Dissolve 2-aminobenzenesulfonic acid and polymer surfactant in dilute hydrochloric acid, add aniline and dilute hydrochloric acid containing water-soluble initiator dropwise under ice-bath conditions, and continue the reaction after the dropwise addition is completed. Afterwards, the reaction solution is vacuum filtered and washed to neutrality, and the filter residue is vacuum-dried to obtain polyaniline;

[0036] Dissolve long-chain alkanes and tetramethylethylenediamine in ethanol solution and reflux at 80°C for continuous reaction. The resulting product is then recrystallized with a mixed solvent of acetone and isopropanol to obtain the cationic gemini surfactant N'N-bis(alkyldimethyl)-1,2-dibromide ethylenediammonium salt;

[0037] Add the polyaniline aqueous solution to the aqueous solution d...

Embodiment 1

[0055] 1) Dissolve 1 part of 2-aminobenzenesulfonic acid and 5 parts of polymer surfactant in 50 parts of 1M / L hydrochloric acid in parts by mass to obtain mixed solution A;

[0056] 2) Dissolving 5 parts of water-soluble initiator in 50 parts of 1M / L hydrochloric acid to obtain mixed solution B;

[0057] 3) Cool down the mixed solution A to 0°C, react for 0.5 hours, then add solution B and 5 parts of aniline dropwise separately and dropwise for 1 hour. Then continue to react for 4 hours to obtain mixed solution C;

[0058] 4) Carry out vacuum suction filtration on the mixed solution C and wash to neutrality, obtain the filter residue by suction filtration, and obtain polyaniline after vacuum drying;

[0059] 5) Dissolve 5 parts of dodecane bromide and 1.16 parts of tetramethylethylenediamine in 20 parts of ethanol solution, condense and reflux at 80°C, and react continuously for 33 hours to obtain solution D;

[0060] 6) Dry the solution D, then recrystallize it with a mixe...

Embodiment 2

[0070] 1) Dissolve 1 part of 2-aminobenzenesulfonic acid and 8 parts of polymer surfactant in 80 parts of 1M / L hydrochloric acid in parts by mass to obtain mixed solution A;

[0071] 2) Dissolving 8 parts of water-soluble initiator in 80 parts of 1M / L hydrochloric acid to obtain mixed solution B;

[0072] 3) Cool the mixed solution A to 2°C, react for 0.5 hours, then add solution B and 5 parts of aniline separately and dropwise for 1.5 hours. Then continue to react for 4 hours to obtain mixed solution C;

[0073] 4) Carry out vacuum suction filtration on the mixed solution C and wash to neutrality, obtain the filter residue by suction filtration, and obtain polyaniline after vacuum drying;

[0074] 5) Dissolve 5.54 parts of tetradecane bromide and 1.16 parts of tetramethylethylenediamine in 20 parts of ethanol solution, condense and reflux at 80°C, and react continuously for 33 hours to obtain solution D

[0075] 6) Dry the solution D, then recrystallize it with a mixed solu...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a modified polyaniline / epoxy resin composite anticorrosive paint and preparation method thereof. The preparation method comprises the following steps: dissolving 2-aminobenzenesulfonic acid and a macromolecular surfactant into diluted hydrochloric acid, and dropwise adding aniline and diluted hydrochloric acid containing a water-soluble initiator, so as to obtain polyaniline; dissolving a long-chain alkane and tetramethylethylenediamine in an ethanol solution, and carrying out condensation reflux continuous reaction to obtain a cationic gemini surfactant; adding a polyaniline aqueous solution into an aqueous solution dissolved with the cationic gemini surfactant to obtain a cationic gemini surfactant modified polyaniline; dissolving the modified polyaniline in waterto disperse the polyaniline, and adding an epoxy resin emulsion, a curing agent, water, an antifoaming agent, a leveling agent and a wetting agent for dispersion to obtain the cationic gemini surfactant modified polyaniline / epoxy resin composite anticorrosive paint. The paint disclosed by the invention is used for metal surface corrosion prevention, and can greatly improve the corrosion resistance, water resistance and the like of metal.

Description

technical field [0001] The invention belongs to the field of anticorrosion paint preparation, in particular to a modified polyaniline / epoxy resin composite anticorrosion paint and a preparation method thereof. Background technique [0002] Epoxy resin has excellent bonding strength and film-forming properties, and can be used in the field of metal anti-corrosion, but if the metal is only coated with epoxy resin, the anti-corrosion effect is not very good. Epoxy resin can be compounded with polyaniline, and polyaniline can undergo redox reaction on the metal surface to form a dense oxide film, thereby protecting the metal from corrosion. In order to solve the problems of poor solubility and mechanical properties of polyaniline, polyaniline will be modified by N'N-bis(alkyldimethyl)-1,2-dibromide ethylenediammonium salt The research on polyaniline and its use in the preparation of cationic gemini surfactant-modified polyaniline has not been reported. [0003] Compared with p...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C09D163/00C09D179/02C09D5/08C08G73/02
CPCC09D163/00C09D5/08C08G73/0266C08L79/02
Inventor 王海花张盼费贵强马永宁刘璇孙立宇
Owner SHAANXI UNIV OF SCI & TECH
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com