Preparation method of terpolymer doped polyaniline super-hydrophobic composite anticorrosive paint

A terpolymer, anti-corrosion coating technology, applied in anti-corrosion coatings, polyester coatings, epoxy resin coatings, etc., can solve the problems of poor water resistance and anti-corrosion performance, improve anti-corrosion performance, improve compatibility and weather resistance The effect of solving the problem of poor water resistance and anti-corrosion performance

Active Publication Date: 2019-09-13
SHAANXI UNIV OF SCI & TECH
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Problems solved by technology

This method solves the problem of poor water resistance and anti-corrosion performance of the resin matrix itself, and can greatly improve the long-term anti-corrosion performance of metals when used as an anti-corrosion coating

Method used

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  • Preparation method of terpolymer doped polyaniline super-hydrophobic composite anticorrosive paint

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preparation example Construction

[0023] A preparation method of a terpolymer-doped polyaniline super-hydrophobic composite anti-corrosion coating of the present invention comprises the following steps:

[0024] 1) In parts by weight, mix 10-20 parts of hydrophilic vinyl monomers and 12-24 parts of fluorine-containing acrylate monomers in 20-40 parts of N,N-dimethylformamide and heat up to After stirring at 80-90°C for 1-2 hours, a uniformly mixed mixed solution A was obtained.

[0025] 2) Add 0.4-0.8 parts of an oil-soluble initiator to the mixed solution A, and react at 80-90° C. for 0.5-2 hours to obtain component B.

[0026] 3) Add the third monomer, 0.1-0.5 part of functional acrylic monomer or 0.2-1 part of long-chain acrylate monomer dropwise into component B and continue to react for 3-4 hours to obtain fluorine-containing terpolymer Surfactant.

[0027] 4) 2.5-3.5 parts of fluorine-containing terpolymer surfactant, 4-4.8 parts of aniline monomer, and 40-60 parts of water are uniformly mixed and reac...

Embodiment 1

[0039] 1) In parts by weight, 10 parts of 2-acrylamide-2-methylpropanesulfonic acid and 12 parts of trifluoroethyl acrylate were mixed in 20 parts of N,N-dimethylformamide, and the temperature was raised to 80°C and stirred. After 1 h, a uniformly mixed mixed solution A was obtained.

[0040] 2) Add 0.4 part of benzoyl peroxide to mixed solution A, and react at 80° C. for 0.5 h to obtain component B.

[0041] 3) The third monomer, 0.1 part of glycidyl acrylate, was added dropwise to component B, and the reaction was continued for 3 hours to obtain a fluorine-containing terpolymer surfactant.

[0042] 4) 2.5 parts of fluorine-containing terpolymer surfactant, 4 parts of aniline monomer, and 40 parts of water are uniformly mixed and reacted at room temperature for 1 hour to obtain a milky white mixed solution C.

[0043] 5) Slowly add 9.8 parts of an aqueous solution of ferric chloride into the mixed solution C dropwise, continue to react for 12 hours, filter, wash and dry to o...

Embodiment 2

[0046] 1) In parts by weight, 20 parts of 2-methacrylamide dodecyl sulfonic acid, 24 parts of hexafluorobutyl acrylate were mixed in 40 parts of N,N-dimethylformamide, and the temperature was raised to 90 ° C and stirred After 2 h, a uniformly mixed mixed solution A was obtained.

[0047] 2) Add 0.8 part of azobisisoheptanenitrile to mixed solution A, and react at 90° C. for 2 h to obtain component B.

[0048] 3) Add the third monomer, 1 part of n-octyl acrylate dropwise into component B and continue to react for 4h to obtain a fluorine-containing terpolymer surfactant.

[0049] 4) 3.5 parts of fluorine-containing terpolymer surfactant, 4.8 parts of aniline monomer, and 60 parts of water are uniformly mixed and reacted at room temperature for 2 hours to obtain a milky white mixed solution C.

[0050] 5) Slowly add 11.8 parts of an aqueous solution of potassium dichromate dropwise to the mixed solution C, continue to react for 24 hours, filter, wash and dry to obtain superhydr...

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Abstract

The invention discloses a preparation method of a terpolymer doped polyaniline super-hydrophobic composite anticorrosive paint. The method includes: firstly adopting solution polymerization, stirringa hydrophilic vinyl monomer, a fluorine-containing acrylate monomer and an oil-soluble initiator in a solvent evenly and carrying out reaction for a period of time, then adding a functional acrylic monomer or long-chain acrylate monomer as a third monomer for further reaction for a period of time to obtain a fluorine-containing terpolymer surfactant; then mixing the fluorine-containing terpolymersurfactant with an aniline monomer and an oxidant evenly, and carrying out reaction for a period of time to obtain super-hydrophobic polyaniline; and finally dispersing the prepared super-hydrophobicpolyaniline evenly in a resin matrix to prepare the polyaniline super-hydrophobic composite anticorrosive paint with excellent anticorrosive performance. The terpolymer doped polyaniline super-hydrophobic composite anticorrosive paint provided by the invention solves the problems of poor waterproofness and corrosion resistance of the resin matrix itself, and can greatly improve the long-acting anti-corrosion performance of metals when used as an anticorrosive paint.

Description

technical field [0001] The invention belongs to the field of anti-corrosion coatings, in particular to a preparation method of a terpolymer-doped polyaniline super-hydrophobic composite anti-corrosion coating. Background technique [0002] Metal corrosion has caused huge losses to science and technology and economic construction. Applying organic coatings on the surface of metal substrates is one of the common strategies for metal corrosion protection. However, the anti-corrosion performance of the resin matrix itself can no longer meet the needs of anti-corrosion. Therefore, the corrosion resistance of the resin matrix is ​​often improved by adding corrosion inhibitors. Polyaniline can not only provide a physical barrier for anti-corrosion coatings, but also provide electrochemical protection for metals, and is often used as a corrosion inhibitor compounded with a resin matrix. The hydrophobic or super-hydrophobic coating has good water resistance and can effectively prev...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D167/08C09D133/04C09D163/00C09D5/08C08G73/02C08F220/24C08F220/58C08F220/32
CPCC09D167/08C09D133/04C09D163/00C09D5/08C08F220/24C08F220/58C08G73/0266C08F220/585C08L79/02C08L33/16C08L33/14C09D4/00C08F2/08C08F220/325C08F220/1808C08F220/1818C08F2/04C08F220/22C08F220/32C08F220/56C08G2150/90C08K5/14C08K5/23C09D5/084
Inventor 王海花孙立宇费贵强马永宁李焱宇
Owner SHAANXI UNIV OF SCI & TECH
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