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A kind of multifunctional superamphiphobic fabric and its preparation method and application

A super-amphiphobic and multi-functional technology, applied in the field of super-amphiphobic, can solve the problems of reduced separation efficiency and impact on application, and achieve the effects of short reaction time, easy operation and mild reaction conditions.

Active Publication Date: 2020-07-28
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, for the superhydrophilic / underwater superoleophobic separation membrane of this technology, due to the density difference between oil and water, the hydrophilic / underwater oleophobic material is effective in separating heavy oil (oil with a density greater than water) and water. When the mixture is mixed, the heavy oil will sink, and an oil film will be formed between the separation membrane and the separation water to prevent the flow of the separation water, resulting in a decrease in separation efficiency and affecting the actual application

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 multifunctional superamphiphobic fabric and its preparation method and application
  • A kind of multifunctional superamphiphobic fabric and its preparation method and application
  • A kind of multifunctional superamphiphobic fabric and its preparation method and application

Examples

Experimental program
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Effect test

Embodiment 1

[0052] 1) Ultrasonic cleaning of cotton fabrics (size 3cm×3cm) with deionized water and ethanol for 15 minutes respectively, and drying at 50°C;

[0053] 2) preparing a mass fraction of 10wt% gamma-mercaptopropyltriethoxysilane and 30wt% ethanol mixed solution of ethyl orthosilicate;

[0054] 3 Soak the fabric treated in step 1) into the solution obtained in step 2) for 5 minutes, then put it into a reaction vessel containing ammonia gas and react at 45°C for 20 minutes. The ammonia gas in the reaction vessel is changed from 25 to 28% concentrated Ammonia water is produced, and the volume fraction of ammonia water is 1.5-10vt% (relative to the container body), and finally the fabric is put into drying at 80°C for 1 hour to obtain a fabric modified with mercapto-silica;

[0055] 4) Then prepare a tetrahydrofuran mixed solution containing 5 wt % 2-(perfluorooctyl) ethyl methacrylate and 0.05 wt % 2-hydroxy-2-methyl-1-phenyl-1-propanone;

[0056] 5) Put the mercaptosilica-modifi...

Embodiment 2

[0063] The polyester fabric (size 3cm×3cm) was ultrasonically cleaned with deionized water and ethanol for 15 minutes, and dried at 50°C; A mixed solution of ethyl acetate in ethanol; soak the fabric in the above solution for 5 minutes, then put it into a reaction vessel containing ammonia gas and react at 80°C for 120 minutes. The ammonia gas in the reaction vessel is produced by 25-28% concentrated ammonia water. The volume fraction is 1.5-10vt% (relative to the container body), and finally put the fabric into the oven at 80°C for 1 hour to obtain a fabric modified with mercapto-silica; then prepare 2-(perfluorooctyl) containing 5wt% Ethyl methacrylate and 0.05wt% tetrahydrofuran mixed solution of 2-hydroxy-2-methyl-1-phenyl-1-propanone; put the mercapto-silica-modified fabric into the light reaction solution at wavelength Irradiated under 360nm ultraviolet light for 1 h, washed with tetrahydrofuran to obtain a superamphiphobic fabric.

Embodiment 3

[0065] Cotton fabrics (size 3cm×3cm) were ultrasonically cleaned with deionized water and ethanol for 15 minutes, and dried at 50°C; Ethanol mixed solution of ester; soak the fabric in the above solution for 5 minutes, then put it into a reaction vessel containing ammonia gas and react at 45°C for 30 minutes. The ammonia gas in the reaction vessel is produced by 25-28% concentrated ammonia water, the volume fraction of ammonia water It is 1.5-10vt% (relative to the container body), and finally the fabric is put into 80°C and dried for 1 hour to obtain a fabric modified with mercapto-silica; methacrylic acid ester and 0.05wt% 2-hydroxyl-2-methyl-1-phenyl-1-propanone mixed solution in tetrahydrofuran; the fabric modified by mercapto-silica is put into the light reaction solution under the wavelength 360nm ultraviolet lamp After irradiating for 1 h, it was washed with tetrahydrofuran to obtain a superamphiphobic fabric.

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Abstract

The invention discloses a multifunctional super-amphiphobic fabric and a preparation method thereof and application thereof. The preparation method of the multifunctional super-amphiphobic fabric comprises the steps of firstly, washing the fabric by using deionized water and ethanol, preparing an ethanol mixed solution of thiol siloxane and tetraethoxysilane, and putting a clean woven fabric intothe mixed solution to be soaked; and secondly, enabling the fabric to react for 5-120 min in the atmosphere containing ammonia, and putting the dried fabric into a tetrahydrofuran solution containinga photoinitiator and a fluorine-containing double-bond compound to perform click reaction. The preparation method of the multifunctional super-amphiphobic fabric, disclosed by the invention, has the advantages of short reaction time, low raw material consumption and simple operation; and the obtained fabric also has a self-cleaning function, an anti-fouling function and a function of separating oil and water of light and heavy oil.

Description

technical field [0001] The invention relates to a superamphiphobic material, in particular to a method for preparing a superamphiphobic fabric used for oil-water separation, self-cleaning and antifouling, and belongs to the field of superamphiphobic. Background technique [0002] Super amphiphobic surface refers to a type of surface with a contact angle of more than 150° for water and oil. Since this type of surface can well repel water and oil, this type of surface has excellent performance in self-cleaning, anti-fouling, and oil-water separation. There are certain application prospects. In general, the preparation of super-amphiphobic surfaces needs to meet the following two conditions, first: a structure like a single concave angle and a double concave angle is required, and second: the surface of the material needs to have an extremely low surface energy. Chinese invention patent application CN106811114A discloses a method for preparing super-amphiphobic fabrics: add fl...

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): D06M11/79D06M13/236B01D17/022D06M101/32D06M101/34D06M101/06
CPCB01D17/0202D06M11/79D06M13/2246D06M13/236D06M2101/06D06M2101/32D06M2101/34D06M2200/01D06M2200/11D06M2200/12
Inventor 皮丕辉陈嘉慧文秀芳徐守萍程江
Owner SOUTH CHINA UNIV OF TECH
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