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A kind of superhydrophobic fabric and its preparation method and application

A super-hydrophobic and fabric technology, applied in the direction of separation methods, chemical instruments and methods, physical treatment, etc., can solve the problems of complicated preparation methods, difficult to degrade, easy to fall off, etc., and achieve the effect of simple process technology and shortened reaction time

Active Publication Date: 2021-09-24
中科检测技术服务(广州)股份有限公司 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the superhydrophobic fabric prepared by the above method has the disadvantages of poor mechanical strength, refractory degradation, harm to the environment and human body, complicated preparation method, and easy to fall off.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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  • A kind of superhydrophobic fabric and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] This embodiment provides a superhydrophobic fabric and its preparation method and application.

[0041] The preparation method of this superhydrophobic fabric is as follows:

[0042] Step 1: Fabric Pretreatment

[0043] At room temperature, cut a 4cm×4cm fabric, add 20ml of deionized water to the beaker, soak the fabric in deionized water and pour out the deionized water, then add 20ml of acetone to the beaker, pour it out after soaking for a while, and then Pour 20ml of ethanol into the beaker, take out the fabric after a period of time, put it in an oven, and dry it at 80°C for 1 hour.

[0044] Step 2: Hydrolysis of γ-mercaptopropyltrimethoxysilane

[0045] Take 1ml of γ-mercaptopropyltrimethoxysilane in a beaker, then add 20ml of isopropanol organic solvent, then add 1ml of deionized water, after fully dissolved, drop 1ml of glacial acetic acid to adjust the pH value to 4.5-6 Left or right, let it stand for 30 minutes until the γ-mercaptopropyltrimethoxysilane is ...

Embodiment 2

[0052] This embodiment provides a superhydrophobic fabric and its preparation method and application.

[0053] The preparation method of this superhydrophobic fabric is as follows:

[0054] Step 1: Fabric Pretreatment

[0055]At room temperature, cut a 4cm×4cm fabric, add 20ml of deionized water to the beaker, soak the fabric in deionized water and pour out the deionized water, then add 20ml of acetone to the beaker, pour it out after soaking for a while, and then Pour 20ml of ethanol into the beaker, take out the fabric after a period of time and put it in an oven, and treat it at 60°C for 2h.

[0056] Step 2: Hydrolysis of γ-mercaptopropyltrimethoxysilane

[0057] Take 1ml of γ-mercaptopropyltrimethoxysilane in a beaker, then add 20ml of isopropanol solvent, then add 1ml of deionized water, after the powder dissolves, drop 1ml of glacial acetic acid to adjust the pH value to 4.5-6 Left or right, let it stand for 10 minutes until it is fully hydrolyzed.

[0058] Step 3: P...

Embodiment 3

[0064] This embodiment provides a superhydrophobic fabric and its preparation method and application.

[0065] The preparation method of this superhydrophobic fabric is as follows:

[0066] Step 1: Fabric Pretreatment

[0067] At room temperature, cut a 4cm×4cm fabric, add 20ml of deionized water to the beaker, soak the fabric in deionized water and pour out the deionized water, then add 20ml of acetone to the beaker, pour it out after soaking for a while, and then Pour 20ml of ethanol into the beaker, take out the fabric after a period of time and put it in an oven for 1 hour at 100°C.

[0068] Step 2: Hydrolysis of γ-mercaptopropyltrimethoxysilane

[0069] Take 1ml of γ-mercaptopropyltrimethoxysilane in a beaker, then add 20ml of isopropanol solvent, then add 1ml of deionized water, after the powder dissolves, drop 1ml of glacial acetic acid to adjust the pH value to 4.5-6 Left or right, let it stand for 60 minutes until it is fully hydrolyzed.

[0070] Step 3: Preparati...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Abstract

The invention belongs to the field of polymer material science, and particularly relates to a super-hydrophobic fabric and a preparation method and application thereof. The method uses γ-mercaptopropyl trimethoxy silicon to connect the fabric and vinyl terminated polydimethylsiloxane, first reacting the hydrolyzed γ-mercaptopropyl trimethoxy silicon with the fabric, and then γ-mercaptopropyl trimethoxy silicon Propyltrimethoxysilicon reacts with vinyl-terminated polydimethylsiloxane through click chemistry, resulting in the superhydrophobicity of the fabric. The method does not use strong acid, strong base and toxic reagents, utilizes the mercapto group in γ-mercaptopropyl trimethoxysilicon to react with the vinyl group on the vinyl-terminated polydimethylsiloxane, the reaction time is short, and the process is simple , suitable for industrial production. When the obtained superhydrophobic fabric is in the air, the contact angle of water droplets on its surface is 151-156°, and the rolling angle is 5-8°. When it is used for oil-water separation, the separation rate is as high as 99.95%, and the separation efficiency can still be maintained above 99.9% after repeated use.

Description

technical field [0001] The invention belongs to the field of polymer material science, and specifically relates to a superhydrophobic fabric and its preparation method and application. The fabric is prepared by a click chemical method, has superhydrophobic performance, and can be used for oil-water separation. Background technique [0002] The superhydrophobic interface has the waterproof, antifouling, and self-cleaning properties similar to lotus leaves. It has been widely used in industry and life, and is one of the hot topics in the functional modification of textiles. At present, there are two main ideas for the construction of superhydrophobic interfaces: 1) building rough structures on the surface of existing hydrophobic materials; 2) modifying existing rough surfaces with substances with low surface energy. Researchers have used electrospinning method (Angewandte Chemie-International Edition, 2004, 43(33): 4338-4341), sol-gel method (Chinese invention patent CN1022777...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06M13/127D06M13/144D06M13/513D06M15/643D06M10/00B01D17/022
Inventor 靳焘贺立陈晓丹曾瑜马倩刘瑞赖华杰陈玉放
Owner 中科检测技术服务(广州)股份有限公司
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