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Super hydrophobic cotton fabric and preparation method thereof

A cotton fabric and fabric technology, applied in plant fibers, textiles and papermaking, fiber processing, etc., can solve the problem of reducing the surface energy of rough surfaces, mentioning less about the stability of superhydrophobic properties of superhydrophobic fabrics, and rarely mentioning micro-nano Problems such as the bonding relationship between the rough structure surface and the substrate, to achieve the effect of good fastness and excellent stability

Inactive Publication Date: 2010-07-07
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The preparation of superhydrophobic surfaces requires the construction of micro-nano rough structures on the one hand, and the reduction of the surface energy of rough surfaces on the other. Although there are many methods for preparing superhydrophobic textiles, these methods rarely mention micro-nano rough structures. The bonding relationship between the surface and the substrate, less mentioning the stability of the superhydrophobic properties of the prepared superhydrophobic fabrics

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

[0016] Example 1: Put 2g of cotton fabric into 100mL of a mass concentration of 5% sodium hydroxide solution, add 8mL of epichlorohydrin under constant stirring, control the reaction temperature at 40°C for 10 hours, take out the fabric and wash it with water until After neutral drying, epoxylated cotton fabric is obtained;

[0017] Mix 12mL tetraethyl orthosilicate and 80mL methanol to obtain mixed solution A, mix 30mL ammonia water with a mass concentration of 26% and 320mL methanol to obtain mixed solution B, then add mixed solution A dropwise to mixed solution B under stirring to react 3h, obtain nano silicon dioxide methanol solution;

[0018] A mixed solution of 0.5mL of 3-aminopropyltriethoxysilane and 5mL of methanol was added dropwise to 200mL of nano-silica methanol solution, and the reaction was continued for 12 hours to obtain aminated nano-silica;

[0019] Add 1 mL of a mixed solution of 3-glycidyl ether propyl trimethoxysilane and 5 mL of methanol dropwise into ...

Embodiment 2

[0022] Example 2: Put 2g of cotton fabric into 100mL of a mass concentration of 5% sodium hydroxide solution, add 10mL of epichlorohydrin under constant stirring, control the reaction temperature at 60°C for 5 hours, take out the fabric and wash it with water until After neutral drying, epoxylated cotton fabric is obtained;

[0023] Mix 12mL tetraethyl orthosilicate and 80mL methanol to obtain mixed solution A, mix 30mL ammonia water with a mass concentration of 28% and 320mL methanol to obtain mixed solution B, and then add mixed solution A dropwise to mixed solution B under stirring to react 8h, obtain nano silicon dioxide methanol solution;

[0024] A mixed solution of 1 mL of 3-aminopropyltriethoxysilane and 5 mL of methanol was added dropwise to 200 mL of nano-silica methanol solution, and the reaction was continued for 20 hours to obtain aminated nano-silica;

[0025] Add 2 mL of a mixed solution of 3-glycidyl ether propyl trimethoxysilane and 5 mL of methanol dropwise ...

Embodiment 3

[0028] Example 3: Put 2g of cotton fabric into 100mL of a mass concentration of 5% sodium hydroxide solution, add 6mL of epichlorohydrin under constant stirring, control the reaction temperature at 50°C for 7.5 hours, take out the fabric and wash it with water until After neutral drying, epoxylated cotton fabric is obtained;

[0029] Mix 12mL tetraethyl orthosilicate and 80mL methanol to obtain mixed solution A, mix 30mL ammonia water with a mass concentration of 27% and 320mL methanol to obtain mixed solution B, and then add mixed solution A dropwise to mixed solution B under stirring to react 5h, obtain nano silicon dioxide methanol solution;

[0030] A mixed solution of 2mL of 3-aminopropyltriethoxysilane and 5mL of methanol was added dropwise to 200mL of nano-silica methanol solution, and the reaction was continued for 8 hours to obtain aminated nano-silica;

[0031] A mixed solution of 0.8 mL of 3-glycidyl ether propyl trimethoxysilane and 5 mL of methanol was added drop...

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 belongs to the fabric water-repellent finishing and processing field, in particular relates a super hydrophobic cotton fabric and a preparation method thereof. The preparation method of the super hydrophobic cotton fabric is characterized in that the epoxy-functionalized modification is performed to the cotton fiber of fabric, then aminated nano-SiO2 and epoxy-functionalized nano-SiO2 are used to impregnate the cotton fabric in turn so as to increase the surface roughness of the fabric, finally a low-surface-energy material is adopted to perform hydrophobization treatment to the fabric; the contact angle between the prepared cotton fabric and water drops is more than 150 degrees; the method utilizes the covalent reaction of epoxy groups of cotton fabric, amino groups of nano-SiO2 and epoxy groups of nano-SiO2 to ensure the built rough surface to have good fastness; and the built surface has a large number of Si-OHs and epoxy groups so as to facilitate the chemical combination of the low-surface-energy material and the surface, thus the superhydrophobic property of the prepared fabric has excellent stability.

Description

technical field [0001] The invention belongs to the field of water-repellent finishing and processing of textiles, and in particular relates to a preparation method of super-hydrophobic cotton fabrics. Background technique [0002] Superhydrophobic functional textiles not only have important applications in industrial production, medical and military products, but also have a wide range of applications in daily life. In order to take advantage of the self-cleaning effect of the superhydrophobic surface, Chinese patent CN 1242114C discloses nano self-cleaning cashmere or products and its preparation method; Chinese patent CN 1277019C discloses nano self-cleaning silk and products; The preparation method of self-cleaning suit fabric and ready-made clothing products of materials, Chinese patent CN100334291C discloses the preparation method of down jacket fabric with self-cleaning function, these patents use nano particles to build rough structure, and use organic fluorine finis...

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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IPC IPC(8): D06M13/11D06M11/79D06M13/188D06M13/517D06M13/513D06M101/06
Inventor 薛朝华贾顺田
Owner SHAANXI UNIV OF SCI & TECH
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