Waterborne anticorrosive primer acrylic resin composition and preparation method thereof

A technology of acrylic resin and anti-corrosion primer, applied in anti-corrosion coatings, epoxy resin coatings, coatings, etc., can solve the problems of corrosion and not outstanding anti-corrosion effect, and achieve the effect of enhancing wet adhesion and outstanding anti-corrosion effect

Inactive Publication Date: 2011-08-31
SNTO TECH GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the substrates used for air-conditioning foil anti-corrosion coatings include epoxy resin and acrylic emulsion. The main problem is that the anti-corrosion effect is not outstanding: the film thickness is 0.8 μm, and it is soaked in 20% NaOH or 10% HCl for 5 minutes under the condition of 25 ° C. Visible corrosion occurs

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] 40% Acrylic Emulsion 78.2%

[0023] The components and content (percentage by weight) of acrylic acid emulsion are: styrene 8%, butyl acrylate 16%, methyl methacrylate 1.5%, hydroxyethyl methacrylate 6.2%, acrylic acid 0.6%, alkyl (aryl ) Phosphate 1.9%, Silicone Phosphate 1.5%, Sodium Allyloxy Hydroxypropyl Sulfonate 1.7%, Sodium Lauryl Sulfonate 1.6%, Potassium Persulfate 0.4%, Ethanolamine 0.6%, Deionized Water 60 %.

[0024] Water-based epoxy resin 0.7%

[0025] Waterborne polyurethane resin 1.7%

[0026] Deionized water 19.4%

[0027] The preparation method is as follows:

[0028] a. Add 40% acrylic emulsion, water-based epoxy resin, and water-based polyurethane resin into the stirring tank with a stirrer according to the proportion, and stir at a speed of 800rpm for 30 minutes to make the mixture even;

[0029] b. Add deionized water and continue to stir for 25 minutes to prepare a water-based acrylic resin composition.

Embodiment 2

[0031] 40% Acrylic Emulsion 85.6%

[0032] Acrylic emulsion components and content (percentage by weight): styrene 12%, butyl acrylate 15%, methyl methacrylate 1.2%, hydroxyethyl acrylate 6.4%, methacrylic acid 0.3%, hydroxyethyl phosphate surface active Agent 2.8%, alkylphenol polyoxyethylene ammonium sulfate / sodium 0.6%, allyloxy hydroxypropyl sulfonate 1.0%, ammonium persulfate 0.1%, ethanolamine 0.6%, deionized water 60%.

[0033] Water-based epoxy resin 0.08%

[0034] Waterborne polyurethane resin 0.02%

[0035] Deionized water 14.3%

[0036] The preparation method is as follows:

[0037] a. Add 40% acrylic emulsion, water-based epoxy resin, and water-based polyurethane resin into a stirring tank with a stirrer according to the proportion, and stir at a speed of 1000rpm for 20 minutes to make the mixture even;

[0038] b. Add deionized water and continue stirring for 15 minutes to prepare a water-based acrylic resin composition.

Embodiment 3

[0040] 40% Acrylic Emulsion 84%

[0041] The components and content (percentage by weight) of the acrylic emulsion are: styrene 8.5%, butyl acrylate 20%, methyl methacrylate 0.8%, hydroxyethyl acrylate 6%, methacrylic acid 0.3%, alkylolamide phosphoric acid Ester 2.5%, Alkylphenol Polyoxyethylene Ammonium / Sodium Sulfate 0.2%, Sodium Allyloxy Hydroxypropylsulfonate 0.8%, Ammonium Persulfate 0.1%, Ethanolamine 0.8%, Deionized Water 60%.

[0042] Water-based epoxy resin 0.1%

[0043] Deionized water 15.9%

[0044] The preparation method is as follows:

[0045] a. Add 40% acrylic emulsion and water-based epoxy resin into the stirring tank with a stirrer according to the proportion, and stir at a speed of 1200rpm for 10 minutes to make the mixture even;

[0046] b. Add deionized water and continue to stir for 20 minutes to prepare a water-based acrylic resin composition. Example 4

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Abstract

The invention discloses a waterborne anticorrosive primer acrylic resin composition, the component and content (weight percentage) of which are as follows: 78.2 to 85.6% of 40% acrylic acid emulsion, 0.08 to 0.86% of waterborne epoxy resin, 0 to 1.7% of waterborne polyurethane resin and 14.3 to 19.4% of deionized water. The composition is applicable to anticorrosive paint of air-conditioning aluminium foil. The waterborne acrylic resin composition comprises functional groups of phosphate ester, acrylic acid ester and epoxy, with increased wet adhesiveness with aluminium base and remarkable anticorrosion effect.

Description

technical field [0001] The invention relates to a water-based anti-corrosion primer, in particular to an acrylic resin composition for a water-based anti-corrosion primer and a preparation method thereof. Background technique [0002] The aluminum foil itself forms a dense aluminum oxide film in the air, which can protect the inner layer of aluminum from corrosion, but when it is in a humid acid-base environment, the oxide film is prone to react and disappear, thus losing its protective effect, while the inner metal aluminum is Rapid oxidation and electric corrosion occur, resulting in "white powder", which seriously affects the working efficiency of the air conditioner heat exchanger, shortens the service life of the air conditioner aluminum foil, and is easy to breed bacteria, produce peculiar smell, and spread germs. Therefore, aluminum used under corrosion resistance requirements or under dry-wet cycle conditions needs to be surface treated to obtain high corrosion prote...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D133/08C09D163/00C09D175/04C09D125/14C09D5/08C08F220/18C08F212/08C08F220/28C08F220/14
Inventor 徐方王芳
Owner SNTO TECH GRP
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