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Super-amphiphobic fabric and preparation method thereof

A super-amphiphobic fabric technology, applied in textiles and papermaking, liquid repellent fibers, fiber processing, etc., can solve the problems of cumbersome preparation process, poor stability and low buoyancy of super-amphiphobic fabrics

Active Publication Date: 2021-05-18
WUHAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of this, it is necessary to provide a super-amphiphobic fabric and its preparation method, in order to solve the technical problems of the super-amphiphobic fabric preparation process in the prior art, poor stability, and small buoyancy in water or oil

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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  • Super-amphiphobic fabric and preparation method thereof
  • Super-amphiphobic fabric and preparation method thereof

Examples

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preparation example Construction

[0019] A first aspect of the present invention provides a method for preparing a super-amphiphobic fabric, comprising the steps of:

[0020] S1 mixing ethanol and deionized water, and adjusting the pH to 8-11 to obtain the first solution;

[0021] S2 Add dopamine hydrochloride, aminosilane and fluorosilane to the first solution, and mix uniformly to obtain the second solution;

[0022] S3 Soak the fabric in the second solution, stir and react for 20-60 hours, take it out and dry it to obtain the super-amphiphobic fabric.

[0023] In the present invention, polydopamine (PDA) can be obtained by autoxidative polymerization of dopamine hydrochloride, fluorosilane is connected with aminosilane through hydrolysis reaction, and polydopamine and aminosilane undergo a Schiff base reaction to generate in-situ PDA on the surface of cotton fabric with low surface energy. Nanoclusters can finally prepare superamphiphobic cotton fabrics with excellent load-bearing capacity and antifouling ...

Embodiment 1

[0037] A kind of super-amphiphobic fabric, its preparation method comprises the steps:

[0038] (1) Mix 20mL ethanol and 20mL deionized water, and adjust the pH to 9 with 2wt% NaOH solution to obtain the first solution;

[0039] (2) Under stirring, add 60mg of dopamine hydrochloride, 80mg of 3-aminopropyltriethoxysilane, and 80mg of 1H,1H,2H,2H-perfluorodecyltriethoxysilane in turn to the first solution, continue Stir evenly to obtain the second solution;

[0040] (3) Soak the clean cotton fabric that has been ultrasonically washed with ethanol and deionized water for 10 minutes and dried in the second solution, stirred at a speed of 450 rpm for 24 hours, taken out and dried in an oven at 60°C to obtain a super-amphiphobic fabric .

[0041] The contact angles of the modified cotton fabric prepared in this example with water, ethylene glycol, and pump oil were measured to be 154°, 151°, and 124°, respectively, indicating that the modified cotton fabric has superamphiphobic pr...

Embodiment 2

[0043] A kind of super-amphiphobic fabric, its preparation method comprises the steps:

[0044] (1) Mix 20mL ethanol and 20mL deionized water, and adjust the pH to 9 with 2wt% NaOH solution to obtain the first solution;

[0045] (2) Under stirring, add 80mg of dopamine hydrochloride, 80mg of 3-aminopropyltriethoxysilane, 80mg of 1H,1H,2H,2H-perfluorodecyltriethoxysilane in turn to the first solution, continue Stir evenly to obtain the second solution;

[0046](3) Soak the clean cotton fabric that has been ultrasonically washed with ethanol and deionized water for 10 minutes and dried in the second solution, stirred at a speed of 450 rpm for 24 hours, taken out and dried in an oven at 60°C to obtain a super-amphiphobic fabric .

[0047] Measure the SEM picture of the modified cotton fabric prepared by the present embodiment as figure 1 As shown, the contact angle picture is as figure 2 As shown, the contact angles with water, ethylene glycol and pump oil are 160°, 155°, an...

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 discloses a super-amphiphobic fabric and a preparation method thereof. The preparation method comprises the following steps of mixing ethanol and deionized water, and adjusting the pH value to 8-11 to obtain a first solution; adding dopamine hydrochloride, amino silane and fluorosilane into the first solution, and uniformly mixing to obtain a second solution; and soaking a fabric in the second solution, stirring and reacting for 20-60 hours, taking out and drying to obtain the super-amphiphobic fabric. The preparation method is simple, the raw material cost is low, a rough structure can be directly constructed on the surface of the fabric through one-step reaction, the surface energy of the fabric is reduced, and the super-amphiphobic surface is formed; and the super-amphiphobic fabric disclosed by the invention has excellent ultraviolet resistance and pollution resistance, can increase self buoyancy in water and pump oil, has good bearing capacity, and has wide application prospects in the fields of clothing, packaging, umbrella manufacturing and the like.

Description

technical field [0001] The invention relates to the technical field of textiles, in particular to a superamphiphobic fabric and a preparation method thereof. Background technique [0002] A superamphiphobic surface refers to a surface with a contact angle to water and oil greater than 150°. This surface combines hydrophobic and oleophobic properties, which can endow the substrate with excellent properties such as self-cleaning and anti-pollution. As a natural renewable resource, cotton fiber has good hydrophilicity and comfort, and is widely used in clothing, packaging and other fields. However, during its application, water droplets or oil droplets with dust or dirt can easily penetrate into the inside of the cotton cloth to contaminate it. Therefore, the superamphiphobic modification of cotton is one of the hotspots in the functional modification of textiles. [0003] At present, many surface modification techniques have been used to prepare super-amphiphobic surfaces, ...

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 Applications(China)
IPC IPC(8): D06M13/368D06M13/50
CPCD06M13/368D06M13/50D06M2200/11D06M2200/12
Inventor 龚晓韩新婷
Owner WUHAN UNIV OF TECH
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