Wood bamboo material with super-hydrophobic mildew-proof anticorrosive coating and preparation method thereof

An anti-corrosion coating, super-hydrophobic technology, applied in wood treatment, wood impregnation, wood impregnation, etc., can solve the problem of not realizing super-hydrophobic mildew and anti-corrosion at the same time, reduce the degree of microbial erosion, reduce the cost of chemicals, equipment requirements low effect

Active Publication Date: 2019-05-21
SOUTH CHINA AGRI UNIV
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  • Application Information

AI Technical Summary

Problems solved by technology

CN108748536A discloses a kind of anti-mildew treatment method for bamboo products. The above patents have reached the performance of super-hydrophobic or anti-mildew and anti-corrosion, but have not realized super-hydrophobic anti-mold and anti-corrosion at the same time.

Method used

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  • Wood bamboo material with super-hydrophobic mildew-proof anticorrosive coating and preparation method thereof
  • Wood bamboo material with super-hydrophobic mildew-proof anticorrosive coating and preparation method thereof
  • Wood bamboo material with super-hydrophobic mildew-proof anticorrosive coating and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0037] 1. Preparation: air-dry the moso bamboo slices (50mm*20mm*5mm) to a moisture content of 10%, and seal them for later use; prepare 2% sodium methyl silicate solution and 2% cupric chloride solution respectively, and then stir them in a mechanical In the state, titrate the methyl silicate solution with copper chloride solution to pH 10, stop the titration and continue stirring for 5 minutes to obtain a suspension; in the state of stirring, completely immerse the air-dried Moso bamboo slices in the suspension, The immersion time was 4 hours, and finally the moso bamboo slices were dried at 105° C. for 2 hours to obtain moso bamboo slices with a superhydrophobic anti-mold and anti-corrosion coating.

[0038] 2. Performance test: the water contact angle of the modified moso bamboo slices is 151.1°, the anti-mold test (ASTM D3273-00) has an anti-mold grade of 0, and the anti-corrosion test (BS EN 113-1996) has a control effect of 100%.

[0039] figure 1 It is the photo of th...

Embodiment 2

[0041] 1. Preparation: air-dry the rubber wood chips (50mm*20mm*5mm) until the moisture content is 11%, and seal them for later use; prepare 3% sodium methyl silicate solution and 3% cupric chloride solution respectively, and then stir them mechanically In the state, titrate the methyl silicate solution with copper chloride solution to pH 11, stop the titration and continue to stir for 5 minutes to obtain a suspension; in the state of stirring, completely immerse the air-dried rubber wood chips in the suspension, The immersion time was 5 hours, and finally the rubber wood chips were dried at 105° C. for 2.5 hours to obtain rubber wood chips with a super-hydrophobic anti-mildew and anti-corrosion coating.

[0042] 2. Performance test: the water contact angle of the modified rubber wood bamboo chips is 151.8°, the anti-mold test (ASTM D3273-00) has a mildew resistance level of 0, and the anti-corrosion test (BS EN 113-1996) has a control effect of 100%.

[0043] image 3 It is ...

Embodiment 3

[0045] 1. Preparation: Air-dry the moso bamboo slices (50mm*20mm*5mm) to a moisture content of 8%, and seal them for later use; prepare 0.1% sodium methyl silicate solution and 0.1% copper chloride solution respectively, and then stir them in a mechanical Under the state, titrate the methyl silicate solution with copper chloride solution to pH 9, stop the titration and continue to stir for 5 minutes to obtain a suspension; under the state of stirring, completely immerse the air-dried Moso bamboo slices in the suspension, The soaking time was 8 hours, and finally the moso bamboo slices were dried at 103° C. for 5 hours to obtain the moso bamboo slices with superhydrophobic anti-mildew and anti-corrosion coating.

[0046] 2. Performance test: the water contact angle of the modified moso bamboo slices is 134.8°, the anti-mildew test (ASTM D3273-00) grade 2, and the anti-corrosion test (BS EN 113-1996) control effect 93.3%.

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Abstract

The invention belongs to the technical field of wood bamboo material surface coating modification, and discloses a wood bamboo material with a super-hydrophobic mildew-proof anticorrosive coating anda preparation method thereof. The wood bamboo material is prepared by performing air-drying on the wood bamboo material until the moisture content is 8 to 14 percent; in a stirring state, titrating amethyl silicate solution to the pH of 8 to 12 by using a copper-containing solution; continuously stirring to obtain a super-hydrophobic mildew-proof anticorrosive suspension after the titrating is stopped; in the stirring state, impregnating the air-dried wood bamboo material in the super-hydrophobic mildew-proof anticorrosive suspension, and drying the wood bamboo material at 60 to 160 DEG C. The wood bamboo material has the advantages of super-hydrophobicity, proofing mildew and preventing corrosion; moreover, the raw materials are cheap and easily obtained. According to the preparation method, the problems of water absorption and mildew in the storage and transportation processes of the wood bamboo material and other fibre-based materials; the size stability of a wood bamboo product iseffectively maintained; the erosion degree of microorganisms is reduced, so that the application range of the wood bamboo material and other fibre-based materials is expanded, the service life is prolonged, and the application prospect is great.

Description

technical field [0001] The invention belongs to the technical field of surface coating and modification of wood and bamboo, and more specifically relates to a wood and bamboo with a superhydrophobic anti-mold and anti-corrosion coating and a preparation method thereof. Background technique [0002] Superhydrophobic materials have the characteristic that the surface water contact angle is greater than 150°. Superhydrophobic materials have the excellent properties of surface self-cleaning and moisture isolation. Superhydrophobic materials have shown excellent self-cleaning effects in natural organisms. They are widely used in agricultural production and building materials such as ceramics and glass wood. focus on. [0003] Superhydrophobic materials have the above advantages, but compared with wood and bamboo, superhydrophobicity cannot completely solve the problems of surface mold and microbial corrosion, which limit the use of wood and bamboo. In order to expand the appli...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B27K3/52B27K5/04
Inventor 章伟伟王达胡传双古今涂登云关丽涛云虹
Owner SOUTH CHINA AGRI UNIV
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