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A kind of wood waterproofing agent, its preparation method and the method for using waterproofing agent to prepare waterproof wood

A water repellent, wood technology, applied in wood treatment, wood impregnation, wood impregnation, etc., can solve the problems of inability to react to form chemical bonds, inability to firmly fix, loss of superphobicity, etc., to achieve easy control of process conditions, reduce moisture absorption performance, The effect of reducing the water absorption of wood

Active Publication Date: 2017-06-16
BEIJING FORESTRY UNIVERSITY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, there are some problems in the preparation technology of wood superhydrophobic materials: (1) The preparation and treatment methods require relatively high-cost equipment, such as plasma technology to treat the wood surface or 3D printing technology to construct the micro-nano structure of the wood surface; (2) Wood superhydrophobic waterproofing agents need to use toxic organic solvents such as acetone, ethanol, and chloroform when preparing or treating wood; (3) some wood superhydrophobic waterproofing agents cannot react with wood to form chemical bonds or cannot be firmly fixed on wood. Loss of superphobicity caused by loss from the wood surface or from the wood

Method used

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  • A kind of wood waterproofing agent, its preparation method and the method for using waterproofing agent to prepare waterproof wood
  • A kind of wood waterproofing agent, its preparation method and the method for using waterproofing agent to prepare waterproof wood
  • A kind of wood waterproofing agent, its preparation method and the method for using waterproofing agent to prepare waterproof wood

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] 1. Preparation of wood waterproofing agent

[0057] 1. Preparation of silicone oil emulsion stock solution

[0058] 1A) Prepare raw materials according to the following weight ratio (g)

[0059]

[0060]

[0061] Wherein, the hydroxyl content of the hydroxy silicone oil is 8%; the hydrogen-containing silicone oil is methyl hydrogen-containing silicone oil with a hydrogen content of 1.6%; the anionic surfactant sodium lauryl sulfate is selected as the surfactant; The particle size is 16-50nm; the particle size of micron silica is 1300-6000 mesh;

[0062] 1B) First, mix the hydroxyl silicone oil and the hydrogen-containing silicone oil evenly, then add the surfactant, nano-silica, micro-silica and water in turn, and stir well; then stir for 30min at a stirring speed of 6000rpm; then put Put the mixed material in an ultrasonic cleaner for ultrasonic treatment to make a silicone oil primary emulsion, wherein the ultrasonic treatment time is 10min; the ultrasonic fre...

Embodiment 2

[0074] 1. Preparation of wood waterproofing agent

[0075] 1. Preparation of silicone oil emulsion stock solution

[0076] 1A) Prepare raw materials according to the following weight ratio (g)

[0077]

[0078] Wherein, the hydroxyl content of the hydroxy silicone oil is 6%; the hydrogen-containing silicone oil is methyl hydrogen-containing silicone oil with a hydrogen content of 1.2%; the surfactant is an anionic surfactant sodium dodecylsulfonate; nano silicon dioxide The particle size of micron silica is 16-50nm; the particle size of micron silica is 1300-2000 mesh;

[0079] 1B) First, mix the hydroxyl silicone oil and the hydrogen-containing silicone oil evenly, then add the surfactant, nano-silica, micro-silica and water in sequence, and stir well; then stir for 30 minutes at a stirring speed of 10,000 rpm; then Put the mixed material into an ultrasonic cleaner for ultrasonic treatment to make a silicone oil primary emulsion, wherein the ultrasonic treatment time is ...

Embodiment 3

[0089] 1. Preparation of wood waterproofing agent

[0090] 1. Preparation of silicone oil emulsion stock solution

[0091] 1A) Prepare raw materials according to the following weight ratio (g)

[0092]

[0093] Wherein, the hydroxyl content of the hydroxy silicone oil is 4%; the hydrogen-containing silicone oil is a methyl hydrogen-containing silicone oil with a hydrogen content of 1.0%; the surfactant is a nonionic surfactant alkylphenol polyoxyethylene ether (OP-10 ); the particle size of nano silicon dioxide is 16-50nm; the particle size of micron silicon dioxide is 4000-6000 mesh;

[0094] 1B) First mix the hydroxyl silicone oil and the hydrogen-containing silicone oil evenly, then add surfactant, nano-silica, micro-silica and water in turn, and stir well; then stir for 30min at a stirring speed of 8000rpm; then mix Put the mixed material in an ultrasonic cleaner for ultrasonic treatment to make a silicone oil primary emulsion, wherein the ultrasonic treatment time is...

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Abstract

The invention provides a wood waterproof agent adopting a silicone emulsion, a method for preparing the wood waterproof agent, and a method for preparing waterproof wood by utilizing the wood waterproof agent. The method for preparing the wood waterproof agent comprises the following steps: first, preparing a silicone oil emulsion primary liquid which contains hydroxyl silicone oil, hydrogen-containing silicone oil, a surfactant, nano-silicon dioxide, micron-silicon dioxide and water; then, diluting the silicone oil emulsion primary liquid into silicone oil emulsions of different concentrations; and finally, adding a catalyst for uniform dissolution and mixing. When the silicone oil emulsion wood waterproof agent provided by the invention is utilized for vacuum-pressurization pretreatment of wood, the waterproof performance and size stability of the wood can be improved, the hygroscopicity of the wood can be reduced, and the contact angle between the treated wood surface and water is larger than 140-150.

Description

technical field [0001] The invention relates to a silicone oil emulsion wood waterproofing agent and a preparation method thereof, and its application on waterproofing treated materials. Background technique [0002] Wood is a natural biological material with the advantages of beautiful texture, high strength-to-weight ratio, and strong processability. With the improvement of people's living standards and the pursuit of low-carbon life, the use of natural renewable materials is becoming more and more popular. When building parks and residential quarters, wood is increasingly used as a main outdoor landscape material. Such as pavilions, plank roads, railings, etc. Compared with other materials, wood requires less energy and releases less carbon in its manufacture, making it an ecological environment material. [0003] The main components of wood are cellulose, hemicellulose and lignin, which contain a large number of hygroscopic hydroxyl groups. Therefore, wood is easily a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B27K3/52B27K3/08
CPCB27K3/08B27K3/52B27K2240/70
Inventor 刘智曹金珍
Owner BEIJING FORESTRY UNIVERSITY
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