A kind of preparation method of superhydrophobic polyaniline composite anticorrosion coating

A super-hydrophobic, anti-corrosion coating technology, applied in anti-corrosion coatings, epoxy resin coatings, coatings, etc., can solve the problems of high fluorine content, unfavorable industrialization, high raw material cost, and achieve low fluorine content, difficult migration, and high price. low cost effect

Active Publication Date: 2020-05-29
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But the disadvantage is that the fluorine content in the product is very large, and the raw material cost is high, which is not conducive to industrialization

Method used

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  • A kind of preparation method of superhydrophobic polyaniline composite anticorrosion coating
  • A kind of preparation method of superhydrophobic polyaniline composite anticorrosion coating

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preparation example Construction

[0026] The invention provides a kind of preparation method of superhydrophobic polyaniline composite anticorrosion coating, comprises the following steps:

[0027] The preparation technology of copolymer surfactant is as follows:

[0028] a. In parts by weight, add 0.05-0.15 parts of a compound of nonionic emulsifier and 0.05-0.15 parts of anionic emulsifier, 0.8-1.1 parts of hydrophilic monomer, 0.9-1.2 parts of hydrophobic monomer into the dry reactor body, fully stirred at a reaction temperature of 60-90°C for 10-30 minutes to obtain a monomer / emulsifier mixture A;

[0029] b. Under stirring conditions, add 2 to 3 parts of initiator to the mixed solution A to initiate the polymerization reaction between the monomers, and the reaction time is 15 to 30 minutes to prepare the pre-emulsion B;

[0030] c. Add 7.2-9.9 parts of hydrophilic monomer, 8.1-10.8 parts of hydrophobic monomer and 4-6 parts of initiator dropwise into pre-emulsion B at the same time. The reaction temperat...

Embodiment 1

[0038] Wherein, the preparation technology of copolymer surfactant is as follows:

[0039]1) 0.1 part of nonylphenol polyoxyethylene ether (TX-10), 0.1 part of sodium lauryl sulfate, 0.8 part of hydrophilic monomer 2-acrylamide-2-methylpropanesulfonic acid (AMPS), 1.2 Parts of hydrophobic monomer hexafluorobutyl acrylate were thoroughly mixed, the reaction temperature was 80°C, and the reaction was stirred for 10 minutes;

[0040] 2) Then add 2.5 parts of ammonium persulfate (APS), polymerize for 15 minutes, and finally add the remaining 7.2 parts of hydrophilic monomer 2-acrylamide-2-methylpropanesulfonic acid (AMPS), 10.8 parts of hydrophobic monomer Fluorobutyl ester and 5 parts of ammonium persulfate (APS) initiator are added dropwise at the same time, the monomer dropping time is controlled at 3.5h, the end time of the initiator dropping is 0.5h later than the monomer dropping end time, and then the stirring reaction is continued for 1h , After treatment, a fluorine-cont...

Embodiment 2

[0046] Wherein, the preparation technology of copolymer surfactant is as follows:

[0047] 1) Add 0.05 parts of octylphenol polyoxyethylene ether (OP-10), 0.05 parts of sodium dodecylbenzenesulfonate, and 0.85 parts of hydrophilic monomer 2-acrylamide-2-methylpropanesulfonic acid (AMPS) , 1.15 parts of hydrophobic monomer hexafluorobutyl acrylate were fully mixed, the reaction temperature was 70°C, and the reaction was stirred for 10 minutes;

[0048] 2) Then add 2 parts of ammonium persulfate (APS), polymerize for 15 minutes, and finally add the remaining 7.65 parts of hydrophilic monomer 2-acrylamide-2-methylpropanesulfonic acid (AMPS), 10.35 parts of hydrophobic monomer Fluorobutyl ester and 4 parts of ammonium persulfate (APS) initiators are added dropwise at the same time, the monomer dropping time is controlled at 3h, the initiator dropping end time is 0.5h later than the monomer dropping end time, and then the stirring reaction is continued for 1h, After treatment, a f...

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Abstract

The invention discloses a preparation method of super-hydrophobicity polyaniline composite anti-corrosion coating. Hydrophobic fluorine-containing monomer, hydrophilic sulfoacid monomer and an emulgator are subjected to free radical polymerization under the effect of an initiator, and a macromolecular fluorine-containing copolymer surface active agent with one end provided with a hydrophilic groupand the other end being a hydrophobic long-chain end is prepared. The self-made fluorine-containing copolymer surface active agent serves as a dopant, polyaniline with the super-hydrophobicity chainsegment is prepared through a chemical oxidative polymerization method, so that the product has the good super hydrophobicity. The long-acting anti-corrosion capability of polyaniline is further improved by combining with the anti-corrosion property of polyaniline. A composite anti-corrosion coating with a series of high properties is prepared by adopting the steps that cheap epoxy resin E-44 serves as substrate resin, super-hydrophobic polyaniline serves as a filler and added into epoxy resin, the super-hydrophobic polyaniline / epoxy resin composite anti-corrosion coating is prepared, then thecoating is evenly covered on the metal surface to form a membrane. The product has the advantages of simple preparation technology, low cost and good durability and the like, and has the wide marketapplication prospect.

Description

technical field [0001] The invention relates to the technical field of organic paint anticorrosion coatings and preparation thereof, in particular to a preparation method of superhydrophobic polyaniline composite anticorrosion coatings. Background technique [0002] With the rapid development of national science and technology and economy, the use of metal materials in engineering construction has also increased. However, in the process of using metal materials, corrosion is one of its fatal problems, which seriously restricts the development of construction engineering, marine engineering and shipping. Corrosion of metals may lead to huge economic losses and catastrophic accidents, threatening human safety. As a result, scientists began to pay attention to the research of metal corrosion, and expanded a new research field - anti-corrosion science. There are many methods of corrosion protection, such as electrochemical protection, corrosion inhibitor protection, organic co...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D163/00C09D5/08C09D7/65C08G73/02C08F220/24C08F220/58
CPCC08F220/24C08G73/0266C08L2205/03C09D5/08C09D7/65C09D163/00C08L79/02C08L33/16C08F220/585
Inventor 王海花李焱宇费贵强严涛王佼邵彦明朱科
Owner SHAANXI UNIV OF SCI & TECH
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