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
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[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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