Method for preparing super hydrophobic magnetic wood surface and wood

A technology for superhydrophobic surface and magnetic wood, which is applied to the preparation of superhydrophobic magnetotropic wood surface, method and wood field, can solve problems such as restricting application, and achieve the effects of easy operation and control, improving use value, and preventing weather resistance deterioration.

Inactive Publication Date: 2017-04-05
ZHEJIANG FORESTRY UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] As one of the important components of modern society, wood is hydrophilic due to the presence of a large number of hydroxyl groups on its surface, but this hydrophilicity seriously restricts its application in some specific fields

Method used

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  • Method for preparing super hydrophobic magnetic wood surface and wood
  • Method for preparing super hydrophobic magnetic wood surface and wood
  • Method for preparing super hydrophobic magnetic wood surface and wood

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] The invention provides a kind of method for preparing superhydrophobic magnetotropic wood surface, comprises the following steps:

[0045] S101: Mix polydimethylsiloxane and Sylgard 184 uniformly at a weight ratio of 10:1 to form the first mixture; polydimethylsiloxane and Fe with a particle size of 30nm-60nm 3 o 4 Mix at a weight ratio of 10:10, and stir at -100° C. for 50 h to form a second mixture.

[0046] S102: intercepting the surface of the lotus leaf of 5 cm×5 cm, cleaning the surface with ethanol and drying it, fixing the dried lotus leaf on a glass slide, and then coating the first mixture on the surface of the lotus leaf fixed on the glass slide, Form the first mixture layer of 3 mm on the lotus leaf surface after drying.

[0047] S103: Curing the product obtained in S102 at 25°C for 5 hours, then infiltrating the cured product with heptadecafluorodecyltriethoxysilane at 100°C for 5 hours, and then peeling and removing the lotus leaves to obtain the first m...

Embodiment 2

[0052] The invention provides a kind of method for preparing superhydrophobic magnetotropic wood surface, comprises the following steps:

[0053] S101: Mix polydimethylsiloxane and Sylgard 184 uniformly in a weight ratio of 8:1 to form the first mixture; polydimethylsiloxane and CoFe with a particle size of 1nm-100nm 2 o 4 Mix at a weight ratio of 10:0.5, and stir at 0° C. for 30 h to form a second mixture.

[0054] S102: intercept taro leaves of 3cm×3cm, wash the surface with ethanol and then dry them, fix the dried taro leaves on a glass slide, and then coat the first mixture on the surface of the taro leaves fixed on the glass slides, Form the first mixture layer of 2mm on the taro leaf surface after drying.

[0055] S103: curing the product obtained in S102 at 100°C for 3 hours, then infiltrating the cured product with heptadecafluorodecyltriethoxysilane at 130°C for 3 hours, and then peeling and removing the taro leaves to obtain the first mixture layer; , the face tha...

Embodiment 3

[0059] The invention provides a kind of method for preparing superhydrophobic magnetotropic wood surface, comprises the following steps:

[0060] S101: Mix polydimethylsiloxane and Sylgard 184 uniformly in a weight ratio of 15:1 to form the first mixture; polydimethylsiloxane and MnFe with a particle size of 20nm-80nm 2 o 4 Mix at a weight ratio of 10:5, and stir at 100° C. for 0.01 h to form a second mixture.

[0061] S102: Cut rose petals of 3cm×3cm, wash the surface with ethanol and dry them, fix the dried rose petals on a glass slide, and then coat the surface of the rose petals fixed on the glass slide with the first The mixture forms a first mixture layer of 5 mm on the surface of the dried rose petals.

[0062] S103: curing the product obtained in S102 at 150° C. for 1 hour, then infiltrating the cured product with heptadecafluorodecyltriethoxysilane at 60° C. for 7 hours, and then peeling and removing rose petals to obtain a first mixture layer; Wherein, the surface...

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Abstract

The invention relates to a method for preparing a super hydrophobic magnetic wood surface. The method includes the following steps: mixing polydimethylsiloxane with a curing agent to form a first mixture; mixing polydimethylsiloxane with magnetic nanoparticles to form a second mixture; coating the first mixture on a super hydrophobic surface for primary curing, and then soaking the super hydrophobic surface with fluoroalkyl silane to obtain a first mixture layer; coating the second mixture on a wood surface, and covering the front surface of the first mixture layer with the wood surface coated with the second mixture for secondary curing; stripping and removing other substances from the wood surface to obtain the super hydrophobic magnetic wood surface. According to the method for preparing the super hydrophobic magnetic wood surface and the wood, a wood resource is allowed to exert the super hydrophobic property, the hydrophily of the wood surface is changed, therefore, not only deterioration of the weather resistance of the wood can be effectively prevented, but also the method is of important significance for the high value-added utilization and functional development of the wood.

Description

technical field [0001] The invention relates to the technical field of solid surfaces, in particular to a method for preparing a superhydrophobic and magnetotropic wood surface and the wood thereof. Background technique [0002] As one of the important components of modern society, wood is hydrophilic due to the presence of a large number of hydroxyl groups on its surface, but this hydrophilicity seriously restricts its application in some specific fields. The reason is that the surface layer of wood is very easy to absorb water or water vapor, and then the absorbed water causes the wood cell wall to swell under the action of capillary absorption; under the action of expansion and contraction, a humidity gradient is formed between the wood surface and the interior of the wood, This humidity gradient acts on the wood, causing the stress imbalance between the wood surface and the interior of the wood, which eventually leads to distortion, warping and cracking of the wood surfa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B27K3/52B27K5/00B27K3/00
CPCB27K3/52B27K3/007B27K5/0095B27K2240/70
Inventor 孙庆丰陈逸鹏王汉伟熊业王超
Owner ZHEJIANG FORESTRY UNIVERSITY
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