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Super-hydrophobic modification treatment method of Chinese fir board

A technology of superhydrophobic modification and treatment method, which is applied in the field of wood hydrophobic modification treatment, which can solve problems such as warpage, mold and rot, etc., and achieve the effect of improving hydrophobicity, improving adhesion stability, significant economic value and social benefits

Inactive Publication Date: 2022-04-05
福建省顺昌县升升木业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Aiming at the problems of warping, deformation, mildew and rot when Chinese fir boards are used outdoors and in humid environments, the present invention provides a super-hydrophobic modification treatment method for Chinese fir boards

Method used

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  • Super-hydrophobic modification treatment method of Chinese fir board

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] (1) Add 2mL of γ-methacryloxypropyltrimethoxysilane to 100mL of ethanol, and stir mechanically at room temperature for 5min to obtain a solution of γ-methacryloxypropyltrimethoxysilane; The fir sample after drying treatment was placed in an automatic vacuum pressurized tank, evacuated to a vacuum degree of 0.06 MPa, and after holding the pressure for 20 minutes, inject the above-mentioned γ-methacryloxypropyltrimethoxysilane solution, add Press down to 0.8MPa, keep the pressure for 60min, and release the pressure; take out the Chinese fir sample and air-dry it at 60°C for 24 hours to obtain the γ-methacryloxypropyltrimethoxysilane modified fir sample;

[0017] (2) Add 5 g of hexafluorobutyl methacrylate to 100 mL of tetrahydrofuran, and stir mechanically at room temperature for 20 minutes to obtain a solution of hexafluorobutyl methacrylate; The modified fir sample was placed in an automatic vacuum pressurized tank, evacuated to a vacuum degree of 0.03MPa, and kept unde...

Embodiment 2

[0021] (1) Add 6 mL of γ-methacryloxypropyl trimethoxysilane to 150 mL of ethanol, and stir mechanically at room temperature for 8 minutes to obtain a solution of γ-methacryloxypropyl trimethoxysilane; The fir sample after drying treatment was placed in an automatic vacuum pressure tank, vacuumed to a vacuum degree of 0.08 MPa, and after holding the pressure for 30 minutes, inject the above-mentioned γ-methacryloxypropyltrimethoxysilane solution, add Press down to 1 MPa, hold the pressure for 45 minutes, and release the pressure; take out the Chinese fir sample, and air-dry it at 60°C for 24 hours to obtain a γ-methacryloxypropyltrimethoxysilane-modified Chinese fir sample;

[0022] (2) Add 10 g of hexafluorobutyl methacrylate to 150 mL of tetrahydrofuran, and stir mechanically at room temperature for 25 minutes to obtain a hexafluorobutyl methacrylate solution; γ-methacryloxypropyltrimethoxysilane The modified fir sample was placed in an automatic vacuum pressurized tank, eva...

Embodiment 3

[0026] (1) Add 10mL of γ-methacryloxypropyltrimethoxysilane to 200mL of ethanol, and stir mechanically at room temperature for 10min to obtain a solution of γ-methacryloxypropyltrimethoxysilane; The fir sample after drying treatment was placed in an automatic vacuum pressure tank, vacuumed to a vacuum degree of 0.09MPa, and after holding the pressure for 40min, inject the above-mentioned γ-methacryloxypropyltrimethoxysilane solution, add Press down to 1.2MPa, hold the pressure for 30min, and release the pressure; take out the Chinese fir sample and air-dry it at 60°C for 24 hours to obtain the γ-methacryloxypropyltrimethoxysilane modified fir sample;

[0027] (2) Add 20 g of hexafluorobutyl methacrylate to 200 mL of tetrahydrofuran, and mechanically stir for 30 minutes at room temperature to obtain a hexafluorobutyl methacrylate solution; γ-methacryloxypropyltrimethoxysilane The modified fir sample was placed in an automatic vacuum pressurized tank, vacuumed to a vacuum degree...

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Abstract

The invention discloses a super-hydrophobic modification treatment method for a Chinese fir board, and belongs to the technical field of wood hydrophobic modification treatment. The super-hydrophobic modification treatment method of the Chinese fir board comprises the following steps: firstly, carrying out primary vacuum pressure impregnation treatment on the Chinese fir board by using a gamma-methacryloxypropyltrimethoxysilane solution, and then carrying out secondary vacuum pressure impregnation treatment on the Chinese fir board by using a hexafluorobutyl methacrylate solution, then carrying out primary spraying treatment on the Chinese fir board by using a potassium persulfate solution; and finally, carrying out secondary spraying treatment on the Chinese fir board by using an ethanol solution. The super-hydrophobic modification treatment method provided by the invention can significantly improve the hydrophobicity, hydrophobic stability and dimensional stability of the Chinese fir board, and has significant economic value and social benefits.

Description

technical field [0001] The invention belongs to the technical field of wood hydrophobic modification treatment, and in particular relates to a superhydrophobic modification treatment method of fir boards. Background technique [0002] Chinese fir is used in the field of building materials and medicine in my country because of its straight, uniform and smooth trunk and light material. Chinese fir has high application value and is widely planted in my country. Because the growth cycle is relatively short and the growth rate is fast, the economic benefits of Chinese fir planting are relatively high, which makes it continue to be used in my country's forestry production. Lignin, cellulose and hemicellulose in Chinese fir contain a large number of hydroxyl groups, which makes it very easy to absorb water. When fir products are used outdoors, they are prone to mildew and decay when washed by rain, resulting in poor dimensional stability and reduced mechanical properties. At the...

Claims

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Application Information

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IPC IPC(8): B27K3/08B27K3/16B27K3/50B27K5/00
Inventor 夏敢华
Owner 福建省顺昌县升升木业有限公司