Double-component wood super-hydrophobic modification liquid taking ethanol as dispersing agent

A super-hydrophobic modification, two-component technology, applied in wood treatment, wood impregnation, wood impregnation, etc., can solve the problems of high cost of modifiers, high toxicity of dispersants, etc., and achieve the effect of easy construction and storage

Active Publication Date: 2019-08-23
FUJIAN AGRI & FORESTRY UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the traditional method has disadvantages such as high cost of modifier and high toxicity of dispersant.

Method used

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  • Double-component wood super-hydrophobic modification liquid taking ethanol as dispersing agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] (1) Add 35 g of absolute ethanol, 1.5 g of hydrogen-containing silicone oil, 1.2 g of white carbon black, and 0.008 g of ethynyl cyclohexanol into the container, and after ultrasonic dispersion is uniform, modified liquid A is obtained. Add 35 g of absolute ethanol, 0.8 g of white carbon black, and 0.05 g of catalyst into another container, and after ultrasonic dispersion is uniform, the modified solution B is obtained.

[0020] (2) Take a plastic wide-mouth container (such as a beaker), add 15 g of modified solution A and 30 g of modified solution B, and mix well.

[0021] (3) Surface hydrophobic modification of wood: immerse the wood block in the modification solution for 3 min.

[0022] (4) Drying of modified wood blocks: Place the soaked wood blocks in step (3) at 50°C for 120 min to dry.

Embodiment 2

[0024] (1) Add 50 g of absolute ethanol, 3 g of hydrogen-containing silicone oil, 2 g of white carbon black, and 0.2 g of tetravinyltetramethylcyclotetrasiloxane into the container, and disperse evenly by ultrasonic to obtain modified liquid A. Add 50 g of absolute ethanol, 2.2 g of white carbon black, and 0.1 g of catalyst into another container, and obtain the modified solution B after ultrasonic dispersion.

[0025] (2) Take a plastic wide-mouth container (such as a beaker), add 50 g of modified solution A and 50 g of modified solution B, and mix well.

[0026] (3) Surface hydrophobic modification of wood: immerse the wood block in the modification solution for 10 min.

[0027] (4) Drying of modified wood blocks: Place the soaked wood blocks in step (3) at 90°C for 60 min to dry.

Embodiment 3

[0029] (1) Add 60 g of absolute ethanol, 7 g of hydrogen-containing silicone oil, 3 g of white carbon black, and 0.03 g of ethynyl cyclohexanol into the container, and after ultrasonic dispersion is uniform, modified liquid A is obtained. Add 60 g of absolute ethanol, 3.5 g of white carbon black, and 0.15 g of catalyst into another container, and after ultrasonic dispersion is uniform, modified liquid B is obtained.

[0030] (2) Take a plastic wide-mouth container (such as a beaker), add 60 g of modified solution A and 30 g of modified solution B, and mix well.

[0031] (3) Hydrophobic modification of the wood surface: the wood block was immersed in the modification solution for 15 min.

[0032] (4) Drying of modified wood blocks: Place the soaked wood blocks in step (3) at 120°C for 30 min to dry.

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Abstract

The invention belongs to the technical field of wood protection, and particularly relates to a double-component wood super-hydrophobic modification liquid taking ethanol as a dispersing agent. The preparation method comprises the following specific steps: preparing a component A by using anhydrous ethanol, hydrogen-containing silicone oil, white carbon black and an inhibitor; preparing a componentB by using anhydrous ethanol, white carbon black and a catalyst; then, uniformly mixing the component A and the component B by stirring to obtain a modification solution; and finally, coating the surface of wood with the modified solution by adopting a dipping or spraying method, and carrying out drying to obtain super-hydrophobic wood. The modified solution is prepared by taking ethanol as a dispersing agent and is designed to comprise two components, and thus has the advantages of low toxicity, good storage performance and the like. The wood coated with the modified solution has super-hydrophobic performance, and can be effectively inhibited from absorbing moisture from the environment, so that the service life of the wood is prolonged.

Description

technical field [0001] The invention belongs to the technical field of wood protection, and in particular relates to a two-component wood superhydrophobic modification liquid using ethanol as a dispersant. Background technique [0002] Wood is widely used as a renewable biomass material. However, wood often causes deformation, decay and discoloration due to the presence of moisture during use. In order to avoid these problems and improve the performance of wood, it is necessary to modify wood. Traditional modification methods include painting, using preservatives, etc. In recent years, the technology of constructing a superhydrophobic surface on the surface of wood based on the "lotus leaf effect" has been continuously applied to the protection of wood. The superhydrophobic coating can inhibit the absorption of water by wood, so as to achieve the effect of anti-corrosion and anti-fouling. However, the traditional method has disadvantages such as high cost of modifier and...

Claims

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Application Information

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IPC IPC(8): B27K3/52
CPCB27K3/52B27K2240/70
Inventor 张欣向谢育霖尤雪清胡晓勇胡清鉴陈鸿铭杨文斌
Owner FUJIAN AGRI & FORESTRY UNIV
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