Method for preparing photocatalytic fluoride-free super-hydrophobic self-cleaning textile

A superhydrophobic and textile technology, applied in textiles and papermaking, liquid-repellent fibers, fiber treatment, etc., to improve self-cleaning performance, reduce optical fragility, and rapid preparation

Inactive Publication Date: 2017-06-23
雅戈尔服装控股有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a method for preparing photocatalytic fluorine-free superhydrophobic self-cleaning textiles, which does not involve perfluorooctane sulfonate The use of PFOA and perfluorooctanoic acid endows textiles with long-term self-cleaning properties, which can effectively degrade organic stains attached to the surface of fabrics, overcome the shortcomings of fluorine-free water-repellent finishing agents that are easily polluted by oil stains, and realize the efficient, simple and rapid self-cleaning of eco-friendly textiles preparation

Method used

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  • Method for preparing photocatalytic fluoride-free super-hydrophobic self-cleaning textile
  • Method for preparing photocatalytic fluoride-free super-hydrophobic self-cleaning textile
  • Method for preparing photocatalytic fluoride-free super-hydrophobic self-cleaning textile

Examples

Experimental program
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Effect test

Embodiment 1

[0030] Embodiment 1: For pure cotton fabric, adopt preparation method of the present invention to prepare, specifically comprise the following steps:

[0031] (1) At room temperature, weigh 2 g of hydrophobic silica nanoparticles, add them to 20 mL of benzyl alcohol with a mass concentration of 0.1 g / mL, and use an ultrasonic cell pulverizer for 3 minutes to obtain a silica dispersion; Slowly add 1 mL of titanium tetrachloride to the silica dispersion with a syringe, stir for 1 hour at room temperature, and then continue stirring for 6 hours at 60°C; then transfer the dispersion into a closed polytetrafluoroethylene container, And placed in an oven at 80°C for aging for 24 hours, a large amount of white precipitate was formed, which was centrifuged to obtain silica / titanium dioxide composite particles, which were washed with ethanol and tetrahydrofuran in sequence, and finally dried in an oven at 80°C for 12 hours, the photocatalytic superhydrophobic composite powder is obtain...

Embodiment 2

[0034] Embodiment 2: for polyester fabric, adopt preparation method of the present invention to prepare, specifically comprise the following steps:

[0035] (1) At room temperature, weigh 5g of hydrophobic silica nanoparticles, add them to 30mL of methanol with a mass concentration of 0.17g / mL, and use an ultrasonic cell pulverizer for 5 minutes to obtain a silica dispersion; use a syringe Slowly add 1 mL of titanium tetrachloride to the silica dispersion, stir at room temperature for 2 hours, then continue to stir at 60°C for 6 hours; then transfer the dispersion into a closed polytetrafluoroethylene container, and Aged in an oven at 80°C for 24 hours, resulting in a large amount of white precipitate, which was centrifuged to obtain silica / titanium dioxide composite particles, then washed with ethanol and tetrahydrofuran in sequence, and finally dried in an oven at 80°C for 12 hours , to obtain photocatalytic superhydrophobic composite powder;

[0036] (2) At room temperatur...

Embodiment 3

[0037] Embodiment 3: for polyester / cotton blended fabric, adopt preparation method of the present invention to prepare, specifically comprise the following steps:

[0038] (1) At room temperature, weigh 3 g of hydrophobic silica nanoparticles, add them to 30 mL of benzyl alcohol with a mass concentration of 0.1 g / mL, and use an ultrasonic cell pulverizer for 4 minutes to obtain a silica dispersion; Slowly add 1 mL of titanium tetrachloride to the silica dispersion with a syringe, stir at room temperature for 2 hours, then continue to stir at 60°C for 6 hours; then transfer the dispersion into a closed polytetrafluoroethylene container, And placed in an oven at 80°C for aging for 24 hours, a large amount of white precipitate was formed, which was centrifuged to obtain silica / titanium dioxide composite particles, which were washed with ethanol and tetrahydrofuran in sequence, and finally dried in an oven at 80°C for 12 hours, the photocatalytic superhydrophobic composite powder ...

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Abstract

The invention discloses a method for preparing photocatalytic fluorine-free superhydrophobic self-cleaning textiles. At room temperature, hydrophobic silicon dioxide particles are dispersed in solvent A and ultrasonically treated to obtain a silicon dioxide dispersion; Add titanium tetrachloride to the mixture; then raise the temperature of the dispersion to 60°C and stir evenly, then transfer it to a closed polytetrafluoroethylene container for hydrothermal treatment, obtain silica / titanium dioxide composite particles after centrifugation, wash and dry to obtain Photocatalytic superhydrophobic composite powder; disperse the composite powder in solvent B and ultrasonically treat it to obtain a photocatalytic superhydrophobic composite powder dispersion, then impregnate clean textiles in the composite powder dispersion, pad and dry A photocatalytic fluorine-free superhydrophobic self-cleaning textile was obtained. The preparation method can avoid the potential threat of the fluorine-containing water and oil repellent finishing agent to environmental safety and human health, and can effectively degrade the organic stains attached to the surface of the fabric, endowing the textile with long-term self-cleaning performance.

Description

technical field [0001] The invention belongs to the field of preparation of functional textiles, and in particular relates to a preparation method of photocatalytic fluorine-free superhydrophobic self-cleaning textiles. Background technique [0002] Fluorine-containing finishing agents are widely used in textile dyeing and finishing to prepare water- and oil-repellent textiles, but the best long-fluorocarbon chain polymer water- and oil-repellent finishing agents will produce stable metabolic end products during production or use Perfluorooctane sulfonate or perfluorooctanoic acid, these substances have been proven to seriously threaten human health and environmental safety, making the use of such water and oil repellent finishing agents restricted by the international community. Major auxiliaries companies and printing and dyeing companies are making great efforts to develop effective substitutes and corresponding processing techniques for fluorine-containing water and oil ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06M11/79D06M11/46D06M23/00
CPCD06M11/79D06M11/46D06M23/00D06M2200/01D06M2200/12
Inventor 王庆淼徐壁蔡再生
Owner 雅戈尔服装控股有限公司
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