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Method for preparing super-hydrophobic fabric through polyphenol modification

A super-hydrophobic, phenol-modified technology, applied in textiles, papermaking, fiber treatment, etc., can solve the problems of high cost of dopamine, limited range of dopamine analogues, long deposition and polymerization time, etc., to achieve low cost, cheap price, excellent resistance The effect of deformability

Active Publication Date: 2016-11-09
DONGGUAN YIMAO FILTER MEDIA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above two methods utilize the characteristics of bionic modification of dopamine to prepare durable superhydrophobic fabrics, but the cost of dopamine used is high, and the deposition and polymerization time of dopamine on the surface of the fabric is long, and the range of available dopamine analogs is limited. its 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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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Soak 1g of washed cotton fabric in 50g of deionized water, add 0.04g of FeCl 3 .6H 2O, at 20°C, stir the reaction at a stirring speed of 100r / min for 0.01 hour, then add 0.16g of tannic acid, continue to stir the reaction at 25°C for 0.05 hour, then use 0.1mol / L NaOH solution The mixed solution was adjusted to a pH value of 8.0, and the obtained mixed solution was stirred at a stirring speed of 300 r / min for 1 hour at 25° C., then the fabric was taken out, and the fabric was washed with deionized water and absolute ethanol for 3 times successively. Air-dried to obtain a cotton fabric modified with a surface tannic acid-iron film layer; 1g of the cotton fabric with a surface modified tannic acid-iron film layer was immersed in a mixed solution of 50mL ethanol and water containing 50mg n-dodecyl mercaptan , wherein the volume ratio of ethanol and water is 7:3, the pH value of the mixed solution is adjusted to 8 with triethylamine, under the condition of 25°C, stir and re...

Embodiment 2

[0022] Soak 1g of washed ramie fabric in 50g of deionized water, add 0.08g of FeCl 3 .6H 2 O, at 25°C, stir and react at a stirring speed of 200r / min for 0.02 hours, then add 0.32g of tea polyphenols, continue to stir and react at 25°C for 0.08 hours, and then use 0.1mol / L NaOH solution The mixed solution was adjusted to a pH value of 8.5, and the obtained mixed solution was stirred at a stirring speed of 300 r / min for 1 hour at 35° C., then the fabric was taken out, and the fabric was washed 3 times with deionized water and absolute ethanol successively. Air-dried to obtain the ramie fabric modified by the tea polyphenol-iron film layer on the surface; the ramie fabric of the 1g surface modified tea polyphenol-iron film layer was immersed in the mixed solution of 50mL ethanol and water containing 100mg n-hexadecyl mercaptan, Among them, the volume ratio of ethanol and water is 7:3, and the pH of the mixed solution is adjusted to 8.5 with triethylamine. At 20°C, stir and reac...

Embodiment 3

[0024] Soak 1g of washed silk fabric in 50g of deionized water, add 0.08g of FeCl 3 .6H 2 O, at 25°C, stir the reaction at a stirring speed of 150r / min for 0.01 hour, then add 0.32g of grape polyphenols, continue to stir the reaction at 25°C for 0.1 hour, and then use 0.1mol / L NaOH solution The mixed solution was adjusted to a pH value of 8.5, and the obtained mixed solution was stirred at a stirring speed of 300 r / min for 1 hour at 25° C., and then the fabric was taken out, and the silk fabric was washed 3 times with deionized water and absolute ethanol successively. After air-drying, the silk fabric modified with grape polyphenol-iron film layer on the surface was obtained; 1g of silk fabric with grape polyphenol-iron film layer modified on the surface was immersed in a mixed solution of 50mL ethanol and water containing 50mg n-octadecyl mercaptan Among them, the volume ratio of ethanol and water is 7:3, and the pH value of the mixed solution is adjusted to 9.0 with triethy...

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 method for preparing super-hydrophobic fabric through polyphenol modification, and belongs to the technical field of weaving. The method comprises dipping fabric successively in a ferric chloride solution and a polyphenol compound solution, so as to obtain fabric of which the surface is modified by a metal-polyphenol layer; then dipping the fabric of which the surface is modified by the metal-polyphenol layer into an ethanol-water mixed solution containing a low-surface-energy substance, reacting for 6-24 h, washing successively by deionized water and absolute ethyl alcohol, and drying the fabric at 40 DEG C in vacuum for 5-10 h, so as to obtain phenol-modified super-hydrophobic fabric. The super-hydrophobic fabric possesses extremely good soaping resistance and efficient endurable hydrophobicity, the static contact angle is still larger than 150 DEG after the fabric is washing for 20 times, the fabric variety is diversified, application is wide, and the preparation technology is simple, green, friendly to environment, low in cost and suitable for large-scale production.

Description

technical field [0001] The invention relates to a method for preparing superhydrophobic fabrics by polyphenol modification, which belongs to the technical field of textiles. Background technique [0002] The water-repellent and hydrophobic finishing of fabrics plays a very important role in improving the function of textiles and improving the self-cleaning, anti-pollution and inhibition of bacterial growth of fabrics. In recent years, the construction of super-hydrophobic surfaces on textile surfaces has received great attention. . A common method for preparing superhydrophobic textiles is to first construct a suitable roughness on the surface of the textile, and then modify the surface of the textile with a rough structure by hydrophobic modification. At present, the methods for constructing micro-nano rough structures on the surface of textiles mainly include: sol-gel method, hydrothermal method, layer-by-layer assembly method, polymer modification method, vapor depositio...

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): D06M13/152D06M11/83D06M13/252
CPCD06M11/83D06M13/152D06M13/252
Inventor 顾绍金杨玲黄菁菁徐卫林杨红军周应山卜怿明
Owner DONGGUAN YIMAO FILTER MEDIA
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