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Self-cleaning type coating for wood base, and preparation method and application method of coating

A self-cleaning, base technology, used in anti-corrosion coatings, fire-retardant coatings, anti-fouling/underwater coatings, etc., can solve the problems of intolerance, wood substrate damage, paint corrosion, etc., and achieve good protection and high market value. , the effect of improving flame retardancy

Inactive Publication Date: 2018-02-16
广州市泰宇科技发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Stain resistance has always been an important indicator for evaluating the quality of coatings. However, the current coatings generally have problems of poor stain resistance or unsustainable stain resistance. At the same time, there are also problems of paint corrosion or decomposition of base materials. This is both It affects the beauty of the coated object and increases the maintenance cost. Moreover, people pay more and more attention to environmental protection issues nowadays. Therefore, it is urgent to develop a coating that can be self-cleaning, environmentally friendly and does not damage its substrate. question
This is especially true for wood substrates. Due to their own characteristics, wood substrates are not only not stain-resistant, but also easy to burn, rot and corrode. It is difficult to clean the dust and oil stains adhering to the surface of wood substrates. The cleaning agent will also cause damage to the wood substrate during the cleaning process. At present, there are only coatings on the market that can prevent the burning of the wood substrate, but there is no coating that can be used for cleaning the wood substrate. Self-cleaning, anti-flammable and anti-corrosion coatings are necessary

Method used

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  • Self-cleaning type coating for wood base, and preparation method and application method of coating

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preparation example Construction

[0059] The present invention also provides a method for preparing a self-cleaning paint for wood substrates, which includes the following steps:

[0060] S1. Select coating materials: According to mass parts, select and weigh out polyurethane 52.4-71, nano-silica 2.1-7.5, acrylic acid 12.1-18.5, ethanol 21.3-28.4, acrylic ester 7.5-15, nano-magnesium hydroxide 1 -5. Nano titanium dioxide 15-21.5, tetrabutyl titanate 7.2-12.4, ethanol 10-15. 2, water 1-1.8, polyvinyl alcohol 2-7.2;

[0061] S2. Preparation of the intermediate layer material: uniformly mix polyurethane, nano-silica, acrylate, and nano-magnesium hydroxide selected in S1 into a mixture, then add acrylic acid to ethanol to form a solution, and then heat it at 18℃-32℃ The previously prepared mixture is added to the solution formed by mixing acrylic acid and ethanol, and stirred until it is a milky liquid. After standing for 1h-5h, the intermediate layer coating is obtained;

[0062] S3. Prepared from the clean layer mater...

Embodiment 1

[0067] Quality of raw materials: polyurethane 52.4g, nano silica 2.1g, acrylic acid 12.1g, ethanol 21.3g, acrylate 7.5g, nano magnesium hydroxide 1g, nano titanium dioxide 15g, tetrabutyl titanate 7.2g, ethanol 10g, water 1g , Polyvinyl alcohol 2g.

[0068] Preparation:

[0069] S1. Select coating materials: According to mass parts, select and weigh out 52.4g polyurethane, 2.1g nano-silica, 12.1g acrylic acid, 21.3g ethanol, 7.5g acrylate, 1g nano-magnesium hydroxide, 15g nano-titanium dioxide, 7.2g tetrabutyl titanate, 10g ethanol, 1g water, 2g polyvinyl alcohol;

[0070] S2. Preparation of the intermediate layer material: uniformly mix the polyurethane, nano-silica, acrylate, and nano-magnesium hydroxide selected in S1 into a mixture, then add acrylic acid to ethanol to form a solution, and then prepare the mixture at 18°C Add the mixture of acrylic acid and ethanol to the solution formed by mixing acrylic acid and ethanol, and stir until it is a milky liquid. After standing for ...

Embodiment 2

[0078] Quality of raw materials: polyurethane 71g, nano silica 7.5g, acrylic acid 18.5g, ethanol 28.4g, acrylate 15g, nano magnesium hydroxide 5g, nano titanium dioxide 21.5g, tetrabutyl titanate 12.4g, ethanol 15.2g, water 1.8 g. Polyvinyl alcohol 7.2g.

[0079] Preparation:

[0080] S1. Select coating materials: According to mass parts, select and weigh out 71g polyurethane, 7.5g nano-silica, 18.5g acrylic acid, 28.4g ethanol, 15g acrylate, 5g nano-magnesium hydroxide, 21.5g nano-titanium dioxide, titanium 12.4g of tetrabutyl ester, 15.2g of ethanol, 1.8g of water, 7.2g of polyvinyl alcohol;

[0081] S2. Preparation of the intermediate layer material: uniformly mix the polyurethane, nano-silica, acrylate, and nano-magnesium hydroxide selected in S1 into a mixture, then add acrylic acid to ethanol to form a solution, and then prepare it at 32°C Add the mixture of acrylic acid and ethanol to the solution formed by mixing acrylic acid and ethanol, and stir until it is a milky liquid...

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Abstract

The invention belongs to the technical field of coatings, and particularly relates to a self-cleaning type coating for a wood base, and a preparation method and application method of the coating. Theself-cleaning coating for the wood base comprises a middle layer and a self-cleaning layer, wherein the middle layer is sprayed on the wood base, and the self-cleaning layer is sprayed on the middle layer; the middle layer comprises polyurethane, nano silicon dioxide, acrylic acid, ethanol, acrylic ester and nano magnesium hydroxide; and the self-cleaning layer comprises nano titanium dioxide, tetrabutyl titanate, ethanol, water and polyvinyl alcohol. The self-cleaning type coating for the wood base provided by the invention can utilize the photocatalytic reaction of the titanium dioxide in the self-cleaning layer to realized the self-cleaning function; and meanwhile, the polyurethane contained in the middle layer has a corrosion-resistant effect, so that the self-cleaning layer can be prevented from being in direct contact with the wood base for corroding or decomposing the wood base.

Description

Technical field [0001] The invention belongs to the technical field of coatings, and in particular relates to a self-cleaning coating for wood substrates, a preparation method and a use method thereof. Background technique [0002] Stain resistance has always been an important indicator for evaluating the quality of coatings. At present, coatings generally suffer from poor stain resistance or non-lasting stain resistance. At the same time, there are problems with coating corrosion or decomposition of substrate materials. It affects the beauty of the coated object and increases the maintenance cost. Moreover, people are paying more and more attention to environmental protection issues. Therefore, the development of a coating that is self-cleaning, environmentally friendly and does not damage its substrate has become an urgent solution. problem. This is especially true for wood substrates. Due to their own characteristics, wood substrates are not only non-stain resistant, but also...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D4/02C09D4/06C09D7/61C09D7/63C09D5/08C09D5/18C09D5/16B05D7/06B05D1/36
CPCC09D4/06B05D1/36B05D7/06B05D7/53C09D5/08C09D5/1618C09D5/18
Inventor 单泰雷
Owner 广州市泰宇科技发展有限公司
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