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Antirust paint emulsion and its preparation method

A technology of anti-rust coatings and emulsions, applied in anti-corrosion coatings, anti-fouling/underwater coatings, coatings, etc., can solve the problems of poor storage stability and high film-forming temperature, and achieve high water resistance and low film-forming temperature of the coating film , storage stability and good film performance

Active Publication Date: 2014-01-01
上海奇想青晨新材料科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, it also has the disadvantages of high film forming temperature and poor storage stability.

Method used

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  • Antirust paint emulsion and its preparation method
  • Antirust paint emulsion and its preparation method
  • Antirust paint emulsion and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] The preparation of ethylene-propylene (vinyl acetate-acrylate) emulsion: 240 parts (by weight, the same below) deionized water, 1.0 parts of sodium bicarbonate and 2.2 parts of anionic surfactants are added in the reactor, and then the first step Disperse the monomers, 85 parts of butyl acrylate and 35 parts of vinyl acetate, in the above aqueous solution, raise the temperature to 70°C, add the initiators, namely 0.17 parts of ammonium persulfate and 0.20 parts of sodium bisulfite, and keep stirring for 80 minutes to obtain a mixed emulsion ; Then dropwise the second step monomer at a rate of 20 to 30 milliliters per minute, i.e. the mixed solution after 108 parts of butyl acrylate, 20 parts of vinyl acetate and 12 parts of acrylic acid are combined evenly, after 1 hour, Slowly lower the temperature to 45-55°C, and control the temperature at 50-60°C, and continue to add component 1 dropwise at a rate of 100-120 ml per minute until the drop is complete. Then raise the te...

Embodiment 2

[0040] The preparation of ethylene-propylene emulsion is with embodiment 1.

[0041] The preparation of antirust paint emulsion: the conversion agent (gallic acid) of 8.0 parts, the conversion accelerator (glucinol) of 2.0 parts, the water of 13.0 parts, the film-forming aid (ethylene glycol ethyl ether) of 3.0 parts and 2.5 parts Mix one part freeze-thaw stabilizer (ethylene glycol) together, heat to 50°C and stir for 1 hour, then add it into 65.0 parts of ethylene-propylene emulsion at a rate of 100 ml per minute, maintain the temperature at 50-60°C, add all After that, add 0.5 parts of defoamer (tributyl phosphate), stir for 1 hour, then add 5.0 parts of thickener (14.2% aqueous solution of sodium polyacrylate), stir for 1 hour, then add 1.0 parts of preservative (5% sodium benzoate), stirred for 1 hour to obtain the water-based rust coating.

[0042] The properties of the antirust paint emulsion prepared in this example are as follows: milky white aqueous dispersion, no l...

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Abstract

The invention relates to antirust paint emulsion, which mainly consists of a transforming agent, a transformation accelerator, water, a film forming additive, a freeze thaw stabilizer, vinyl acetate-acrylic emulsion, a thickener, a defoamer and a preservative. The invention also provides a preparation method of the antirust paint emulsion. The antirust paint emulsion of the invention has a low film forming temperature and good storage stability, and the film has good properties and high water resistance. The invention completely meets the antirust protection requirement of ship production industry, petroleum industry, mechanical industry, construction industry and other industries in need of antirust protection for steel.

Description

technical field [0001] The invention relates to an antirust paint emulsion for steel components and a preparation method thereof. Background technique [0002] In order to protect steel components from rust, paint is often used. In the past, before using paint, the base material must be thoroughly derusted, and the derusting work is very labor-intensive, and for large and complex steel components, it is almost impossible to completely derust. [0003] At present, there is a rust coating, which does not need to be thoroughly derusted before use, and can be directly applied to the rust surface of the steel component, and can also receive the antirust effect. Patent No. 57-18766 and GB2160877 describe an anti-corrosion coating composed of emulsion, film-forming aid, conversion agent, conversion accelerator, freeze-thaw stabilizer, defoamer, tackifier and water. , which is currently a better class of anti-rust paint emulsion. However, it also has the disadvantages of high fil...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D131/04C09D133/08C09D5/08C09D5/14C09D7/12
Inventor 周盛忠
Owner 上海奇想青晨新材料科技股份有限公司
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