Fluorine-free super-hydrophobic fabric as well as preparation method and application thereof

A super-hydrophobic, fabric technology, applied in textiles and papermaking, general water supply saving, plant fibers, etc., can solve the problems of cumbersome preparation process of super-hydrophobic fabrics, achieve excellent oil spill cleanup and oil-water separation performance, easy to operate, easy to scale The effect of scale preparation

Active Publication Date: 2021-12-03
WUHAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of this, it is necessary to provide a fluorine-free super-hydrophobic cotton fabric and its preparation method and application, in order to solve the technical problems of the complicated preparation process of super-hydrophobic fabrics in the prior art

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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  • Fluorine-free super-hydrophobic fabric as well as preparation method and application thereof
  • Fluorine-free super-hydrophobic fabric as well as preparation method and application thereof
  • Fluorine-free super-hydrophobic fabric as well as preparation method and application thereof

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preparation example Construction

[0031] A first aspect the present invention provides a fluorine-free method for preparing a superhydrophobic fabric, comprising the steps of:

[0032] Sl, acrylic 3- (trimethoxysilyl) propyl methacrylate and long chain silane uniformly dispersed in anhydrous ethanol to obtain a solution A;

[0033] S2, the PEI solution is uniformly dispersed into the above solution A to obtain a solution B;

[0034] S3, the hydrophilic silica nanoparticles uniformly dispersed in the above solution B, C to obtain a mixture;

[0035] S4, the fabric is modified by the mixed liquid C to give a superhydrophobic fluorine-free fabric.

[0036] The present invention is by reaction of 1,4-conjugate addition to PEI and implemented (acrylate, 3- (trimethoxysilyl) propyl) TMSPA multifunctional covalent crosslinking between and by hydrogen bonding between the fabric and the PEI interaction of the fabric in situ modification; simultaneous action TMSPA and silanated long-chain silane is commonly connected to the...

Embodiment 1～5

[0052] Preparation method of a fluorine-free wavefrotic cotton fabric, including the steps of:

[0053] (1) 80 μL of acrylic 3- (trimethoxilica) propyl ester and 400 μL of dodecyltrimethoxysilane were dispersed in 20 ml of anhydrous ethanol;

[0054] (2) In the stirring state, 20 ml 10 mg / ml PEI aqueous solution was added to the solution of step (1);

[0055] (3) 0.4 g of hydrophilic silica nanoparticles were added to the above-mentioned mixed solution for 5 min;

[0056] (4) Washing cotton fabric obtained by ultrasound to ethanol and dried over, dried through the wiper cotton fabric, and stirred in the solution of step (3), stirring 4, 8, 12, 16, 20h, temperature 25 ° C, rotation speed is 500 rpm , Remove the modified cotton fabric is dried in an oven at 80 ° C to give a fluorine-free coastal cotton fabric.

[0057] The water contact angle of the modified cotton fabric was prepared from 149.7 °, 151.0 °, 152.9 °, 149.0 °, 146.8 °, respectively.

Embodiment 6～10

[0059] Preparation method of a fluorine-free wavefrotic cotton fabric, including the steps of:

[0060] (1) 80 μL of acrylic 3- (trimethoxilica) propyl ester and 400 μL of dodecyltrimethoxysilane were dispersed in 20 ml of anhydrous ethanol;

[0061] (2) In the stirring state, 20 ml 10 mg / ml PEI aqueous solution was added to the solution of step (1);

[0062] (3) 0, 0.1, 0.2, 0.3, 0.4 g of hydrophilic silica nanoparticles were added to the above mixed solution for 5 min;

[0063] (4) Washing the past ionized water and ethanol, 10 min and dried a clean cotton fabric is placed in the solution of step (3), stirring for 12 h, temperature 25 ° C, rotational speed is 500 rpm, and the modified cotton fabric is taken out Drying in an oven at 80 ° C to give a fluorine-free wafted cotton fabric.

[0064] The water contact angle of the modified cotton fabric was prepared from 146.5 °, 147.8 °, 149.1 °, 155.0 °, 152.9 °, respectively.

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Abstract

The invention relates to a fluoride-free super-hydrophobic fabric as well as a preparation method and application thereof. The preparation method comprises the following steps of uniformly dispersing acrylic acid 3-(trimethoxysilyl) propyl ester and long-chain silane into absolute ethyl alcohol to obtain a solution A; uniformly dispersing a PEI aqueous solution into the solution A to obtain a solution B; uniformly dispersing hydrophilic silicon dioxide nanoparticles into the solution B to obtain a mixed solution C; and modifying the fabric with the mixed solution C to obtain the fluorine-free super-hydrophobic fabric. The preparation method provided by the invention is simple and convenient to operate, does not use fluorine-containing chemical reagents, is environment-friendly and is easy for large-scale preparation; and the water contact angle of the super-hydrophobic cotton fabric obtained by the invention can reach 155 degrees, and the super-hydrophobic cotton fabric has excellent heat resistance, chemical stability, reusability and good mechanical durability and shows excellent spilled oil cleaning performance and oil-water separation performance.

Description

Technical field [0001] The present invention relates to a technical field of textile functional modification, in particular fluorine-free, to a super-hydrophobic fabric and its preparation method and application. Background technique [0002] Oil Spill oil and oily wastewater pollution of the water industry in the oil spill caused because of toxic chemicals, causing great threat to the environment and human health. And development of effective techniques for oil spill cleanup materials and waste oils and organic contaminants is critical separated. Water contact angle (CA)> 150 ° superhydrophobic materials because of its importance in anti-icing, drag reduction, self-cleaning, the droplet control, oil-water separation or the like received extensive attention. In the super-hydrophobic material, waterproof textiles is considered to be the ideal choice for the treatment of industrial waste water oil and marine oil spills. Low price of cotton fabrics and other textiles, everywhere,...

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): D06M11/79D06M13/513D06M15/61D06M101/06
CPCD06M13/5135D06M15/61D06M11/79D06M2101/06D06M2200/12Y02A20/204
Inventor 龚晓余海洋
Owner WUHAN UNIV OF TECH
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