A method for preparing superhydrophobic cotton textiles by mercapto-ene click chemical modification

A super-hydrophobic cotton, chemical modification technology, applied in textiles and papermaking, abrasion-resistant fibers, light-resistant fibers, etc., can solve the problems of actual manufacturing trouble, damage to the ecological environment, complicated and cumbersome manufacturing methods, etc., and achieve good acid resistance. Alkali, improve hydrophobicity, improve the effect of roughness

Active Publication Date: 2022-06-21
NANTONG TEXTILE & SILK IND TECH RES INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are also many ways to manufacture superhydrophobic surfaces, such as sol-gel method, chemical vapor deposition method, layer-by-layer self-assembly, etching method, plasma technology, electrochemical and other methods, although these methods are very effective and have certain advantages. Persistence, but most of the production methods are complex and cumbersome, causing troubles to the actual production, and most of the methods use fluorine-containing reagents, which destroy the ecological environment. Therefore, a simple, environmentally friendly and cheap method of manufacturing superhydrophobic is urgently needed at present.

Method used

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  • A method for preparing superhydrophobic cotton textiles by mercapto-ene click chemical modification
  • A method for preparing superhydrophobic cotton textiles by mercapto-ene click chemical modification
  • A method for preparing superhydrophobic cotton textiles by mercapto-ene click chemical modification

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Step 1. Cotton fabric pretreatment: Experimental formula: cotton cloth 10cm×10cm, 100°C, soap flakes 2g / L, Na 2 CO 3 5g / L, liquor ratio 1:50, 30min, vacuum drying at 70℃. After drying, take out, and use acetone, ethanol, and deionized water to ultrasonically clean the cotton fabric in sequence. Ultrasonic cleaning is performed in each solvent for 15 minutes. After cleaning, the cloth sample is taken out and dried.

[0031] Step 2, cotton fabric modification treatment: put the pretreated cotton fabric into a dyeing cylinder, add 0.3 mL of MPTES, and react in an infrared dyeing machine at 90° C. for 90 min. Take out the cloth sample, put it in a conical flask, add 100 mL of absolute ethanol to clean it, shake it in a small sample machine at 25 °C for 4 hours, take it out, wash it with deionized water, and dry it in a vacuum at 80 °C.

[0032] Step 3, mercapto-ene click chemical hydrophobization of modified cotton fabric: Cut the modified cotton fabric into a 5cm×5cm sw...

Embodiment 2

[0034] Step 1. Cotton fabric pretreatment: Experimental formula: cotton cloth 10cm×10cm, 100°C, soap flakes 2g / L, Na 2 CO 3 5g / L, liquor ratio 1:50, 30min, vacuum drying at 70℃. After drying, take out, and use acetone, ethanol, and deionized water to ultrasonically clean the cotton fabric in sequence, ultrasonically clean for 15 minutes in each solvent, take out the cloth sample after cleaning, and dry.

[0035] Step 2, cotton fabric modification treatment: put the pretreated cotton fabric into a dyeing cylinder, add 0.3 mL of MPTES, and react in an infrared dyeing machine at 90° C. for 90 min. Take out the cloth sample, put it in a conical flask, add 100 mL of absolute ethanol to clean it, shake it in a small sample machine at 25 °C for 4 hours, take it out, wash it with deionized water, and dry it in a vacuum at 80 °C.

[0036] Step 3, mercapto-ene click chemical hydrophobization modified cotton fabric: Cut the modified cotton fabric into a 5cm×5cm swatch, remove the burr...

Embodiment 3

[0042] Step 1. Pretreatment of cotton fabric: Experimental formula: cotton cloth 10cm×10cm, 100°C, soap flakes 2g / L, Na 2 CO 3 5g / L, liquor ratio 1:50, 30min, vacuum drying at 70℃. After drying, take out, and use acetone, ethanol, and deionized water to ultrasonically clean the cotton fabric in sequence. Ultrasonic cleaning is performed in each solvent for 15 minutes. After cleaning, the cloth sample is taken out and dried.

[0043] Step 2, cotton fabric modification treatment: put the pretreated cotton fabric into a dyeing cylinder, add 0.3 mL of MPTES, and react in an infrared dyeing machine at 90° C. for 90 min. Take out the cloth sample, put it in a conical flask, add 100 mL of absolute ethanol to clean it, shake it in a small sample machine at 25 °C for 4 hours, take it out, wash it with deionized water, and dry it in a vacuum at 80 °C.

[0044] Step 3, mercapto-ene click chemical hydrophobization of modified cotton fabric: Cut the modified cotton fabric into a 5cm×5cm...

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Abstract

The invention discloses a method for preparing superhydrophobic cotton textiles by using mercapto-ene click chemical modification, comprising: S1, pretreating cotton fabrics to introduce hydroxyl groups into the fiber surface; S2, contacting the surface of the pretreated cotton fabrics Branched mercaptosilane; S3, immerse the cotton fabric grafted with mercaptosilane in a mixture composed of ethyl acetate, tetramethyltetravinylcyclotetrasiloxane, octadecyl mercaptan and benzoin dimethyl ether, ultraviolet A reaction occurs when light is irradiated; after the reaction is completed, it is washed and dried to obtain the superhydrophobic cotton textile. The invention also discloses superhydrophobic cotton textiles prepared by the method. In the superhydrophobic cotton textile prepared by the method of the present invention, hydrophobic substances are grafted on the surface of the fabric in the form of chemical bonds, which can improve the properties of the superhydrophobic textile such as acid and alkali resistance, water washing, friction, and ultraviolet light.

Description

technical field [0001] The invention relates to the technical field of functional textiles, in particular to a superhydrophobic fabric and a preparation method thereof. Background technique [0002] Cotton is an abundant and readily available natural polymer on earth, and cotton fabrics are widely used in various industries. However, because cotton fabric contains a large number of hydrophilic hydroxyl groups, cotton is easily contaminated and often wetted by water, which limits the application range of cotton to a certain extent, and the preparation of superhydrophobic cotton is also a topic worthy of research. Superhydrophobic surfaces are also used in self-cleaning, oil-water separation, anti-corrosion, and anti-fog surfaces, so the preparation of superhydrophobic cotton fabrics will broaden the application range of cotton fabrics. [0003] There are two conditions to construct a superhydrophobic surface, one is to reduce the surface energy of the surface, and the other ...

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): D06M10/08D06M13/513D06M11/76D06M13/188D06M101/06
CPCD06M10/08D06M13/513D06M11/76D06M13/188D06M2101/06D06M2200/12D06M2200/25D06M2200/35
Inventor 陈国强王宝亮
Owner NANTONG TEXTILE & SILK IND TECH RES INST
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