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Single-component water-based coating with high film forming performance and preparation method thereof

A technology of film-forming properties and water-based coatings, applied in the direction of coatings, etc., can solve the problems of low cross-linking density of water-based emulsions, long time required for film formation, and long construction period, so as to increase the cross-linking density, reduce the time used, The effect of increasing the solid content

Active Publication Date: 2015-08-12
惠州市亚美涂料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Water-based coatings can be widely applied to various substrates. One-component water-based coatings slowly form films through the stacking and fusion of latex particles. The cross-linking density of water-based emulsions is relatively low, and the water volatilizes slowly. The physical and chemical properties can only be reflected after it is completely dry, and the construction period is longer
At present, some newly developed two-component waterborne polyurethane coatings have achieved good results in these aspects, but their cost is high and construction requirements are many.

Method used

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  • Single-component water-based coating with high film forming performance and preparation method thereof
  • Single-component water-based coating with high film forming performance and preparation method thereof
  • Single-component water-based coating with high film forming performance and preparation method thereof

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preparation example Construction

[0040] The preparation method of this one-component high-film-forming water-based coating is: mixing water, acrylic acid modified water-based polyurethane emulsion, calcium carbonate, white pigment, substrate wetting agent, wetting and dispersing agent and dispersing agent together; with 1400 Stir and disperse at a speed of -1600r / min (rpm) for 20-60min; after the dispersion is complete, add water-based amino resin emulsion, leveling agent, defoamer, thickener and film-forming aid, and then use 1400-1600r / min Stir and disperse at a high speed for 5-30 minutes; add a pH regulator to adjust the pH value to 7.5-8 as the case may be, to obtain the one-component water-based coating with high film-forming performance.

[0041] The acrylic acid modified water-based polyurethane emulsion has a solid content of 80%. The preparation method is: drop acrylic acid monomers into the water-based polyurethane resin, use acrylic acid as the seed emulsion, and synthesize the core-shell structure...

Embodiment 1

[0046] The one-component high film-forming performance water-based paint of the present invention comprises the following components by weight:

[0047]

[0048]The method for preparing the above-mentioned single-component high-film-forming water-based coating by using this formula is as follows: according to the content of each component in the above-mentioned formula, water, acrylic acid modified water-based polyurethane emulsion, titanium dioxide, talcum powder, calcium carbonate, and substrate Add the wetting agent, wetting and dispersing agent and dispersing agent into the mixing tank, and stir for 30 minutes at a speed of 1500r / min. After the dispersion is complete, add water-based amino resin emulsion, leveling agent, defoamer, thickener and Propylene glycol n-butyl ether and ethanol are mixed at a ratio of 5:1 as a film-forming aid, then stirred and dispersed at a speed of 1500r / min for 15 minutes, and finally added with a pH regulator to adjust the pH value to 7.5-8...

Embodiment 2

[0052] The one-component high film-forming performance water-based paint of the present invention comprises the following components by weight:

[0053]

[0054] The method for preparing the above-mentioned single-component high-film-forming water-based coating by using this formula is as follows: according to the content of each component in the above-mentioned formula, water, acrylic acid modified water-based polyurethane emulsion, titanium dioxide, talcum powder, calcium carbonate, and substrate Add the wetting agent, wetting and dispersing agent and dispersing agent into the mixing tank, and stir at a speed of 1400r / min for 60 minutes. After the dispersion is complete, add water-based amino resin emulsion, leveling agent, defoamer, thickener and tripropylene glycol in sequence A film-forming aid mixed with n-butyl ether and ethanol at a ratio of 10:1, then stirred and dispersed at a speed of 1400r / min for 30 minutes, and finally added with a pH regulator to adjust the pH...

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Abstract

The invention relates to a single-component water-based coating with high film forming performance and a preparation method thereof. The water-based coating comprises the following components in parts by weight: 40-60 parts of acrylic acid modified waterborne polyurethane emulsion, 5-10 parts of water-based amino resin emulsion, 11-40 parts of filler, 0.1-1 part of a substrate wetting agent, 2-5 parts of a dispersing agent, 0.1-1 part of a defoaming agent, 0.1-0.5 part of wetting dispersant, 3-5 parts of a coalescing agent and 1-25 parts of water. The coating disclosed by the invention can form a film in a short time and is capable of achieving an ideal forming performance quickly.

Description

technical field [0001] The invention relates to the technical field of coatings, in particular to a single-component high-film-forming water-based coating and a preparation method thereof. Background technique [0002] my country's environmental pollution is becoming more and more serious, and air pollution such as "smog" is becoming more and more serious. In response to my country's environmental status, local governments have successively issued environmental protection policies, and the country has formulated a series of environmental protection regulations to limit the discharge of harmful substances. The coatings industry, a chemical industry related to all aspects of daily life, is facing major changes. It is an inevitable trend in the development of coatings to replace traditional solvent-based coatings with zero or no VOC water-based coatings. [0003] Water-based coatings can be widely used on various substrates. One-component water-based coatings slowly form films ...

Claims

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Application Information

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IPC IPC(8): C09D151/08C09D161/20C09D7/12C08F283/00C08F220/06
CPCC08F283/006C08K2201/011C09D7/61C09D7/63C09D151/08C08L61/20C08K13/02C08K2003/265C08K2003/2241C08K3/34C08K5/06C08K5/05C08F220/06
Inventor 刘勇邓建华
Owner 惠州市亚美涂料有限公司
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