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A kind of multi-tungsten oxygen cluster functionalized reversible color changing cotton fabric and preparation method thereof

A cotton fabric and functionalization technology, which is applied in the field of reversible discoloration cotton fabric functionalized with polytungsten oxide clusters and its preparation, can solve the problems of slow color development and fading, large environmental impact, and unfavorable energy saving and environmental protection. To achieve the effect of reducing waste of resources, combining closely, and streamlining the process flow

Active Publication Date: 2022-03-11
NANTONG UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are two types of fiber-changing materials, inorganic and organic, and the inorganic material is mainly SrTiO 3 , but the material develops and fades color slowly
Organic materials include azobenzene derivatives, spiropyran derivatives, etc., but these materials are greatly affected by the environment
And the method mainly adopts electrospinning technology, which is not conducive to energy saving and environmental protection

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

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Effect test

preparation example Construction

[0021] The invention provides a method for preparing a polytungsten oxide functionalized reversible discolored cotton fabric, comprising the following steps:

[0022] 1) Soak the cotton fabric with ethanol, remove surface attachments, then wash and dry;

[0023] 2) dissolving citric acid and sodium hypophosphite in deionized water to obtain a mixed solution;

[0024] 3) Putting the cotton fabric obtained in step 1) into the above-mentioned mixed solution, dipping twice and rolling twice, then washing with water and drying;

[0025] 4) Put the cotton fabric obtained in step 3) into a rare earth ion solution with a molar concentration of 0.004-0.06mol / L, add polytungstate precursor under vigorous stirring, and adjust the pH to 2 with sodium hydroxide solution ~7, then heat-preserve and stir at a temperature of 50~70°C for 1~3h, take out the cotton fabric and cool it to room temperature, evaporate and dry to obtain a reversible color-changing cotton fabric functionalized with po...

Embodiment 1

[0031] (1) Soak 5*5cm cotton fabric with ethanol, remove surface attachments, wash with water, and dry for later use.

[0032] (2) 10 g of citric acid and 5 g of sodium hypophosphite were dissolved in 85 mL of deionized water to obtain a mixed solution.

[0033] (3) Add the cotton fabric obtained in the step (1) to the mixed solution obtained in the step (2), dipping twice, padding twice, washing with water, drying in the air, and setting aside.

[0034] (4) putting the cotton fabric obtained in step (3) into 40 mL of EuCl with a molar concentration of 0.015 mol / L 3 ·6H 2 O solution, stirred vigorously, then added 1.46 g of K 7 [PW 11 o 39 ]·12H 2 O, use a sodium hydroxide solution with a concentration of 3 mol / L to adjust the pH=3, stir at 60°C for 1 hour, take it out and cool it to room temperature, and evaporate to dry to obtain the reversible polytungsten oxide functionalized polytungsten oxygen cluster in this example Color changing cotton fabric.

Embodiment 2

[0036] (1) Soak 5*5cm cotton fabric with ethanol, remove surface attachments, wash with water, and dry for later use.

[0037] (2) 10 g of citric acid and 5 g of sodium hypophosphite were dissolved in 85 mL of deionized water to obtain a mixed solution.

[0038] (3) Add the cotton fabric obtained in the step (1) to the mixed solution obtained in the step (2), dipping twice, padding twice, washing with water, drying in the air, and setting aside.

[0039] (4) putting the cotton fabric obtained in step (3) into 40 mL of EuCl with a molar concentration of 0.015 mol / L 3 ·6H 2 O solution, vigorously then add 2.23 g of K 6 [α-P 2 W 18 o 62 ]·14H 2 O, use a sodium hydroxide solution with a concentration of 3 mol / L to adjust the pH=3, stir at 60°C for 1 hour, take it out and cool it to room temperature, and evaporate to dry to obtain the reversible polytungsten oxide functionalized polytungsten oxygen cluster in this example Color changing cotton fabric.

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 technical field of textiles, and discloses a reversible color-reversible cotton fabric functionalized with polytungsten oxide clusters and a preparation method thereof. By organically combining polytungstate with the carboxylic acid groups on the cotton cloth, the polytungstate oxycluster-rare earth carboxylic acid derivatives are directly grown on the fiber in situ while preparing, which simplifies the process, and the polytungstate Directly synthesized on the fiber, the polytungstate and the fiber are combined more tightly, and the prepared reversible discoloration cotton fabric has photochromic and thermochromic properties, which can be applied to the development of functional fabrics.

Description

technical field [0001] The invention relates to the field of textile technology, in particular to a reversible color-reversible cotton fabric functionalized with polytungsten oxide clusters and a preparation method thereof. Background technique [0002] Cotton fabric is a natural fiber material widely used in the field of textile materials. However, with the increasing maturity of the traditional textile industry, research in the textile industry is also developing towards multifunctional fabrics. For example, photo / thermochromic behavior can be achieved by treating cotton fibers. At present, there are two types of fiber-changing materials, inorganic and organic, and the inorganic material is mainly SrTiO 3 , but the material develops and fades color slowly. Organic materials include azobenzene derivatives, spiropyran derivatives, etc., but these materials are greatly affected by the environment. And the method mainly adopts electrospinning technology, which is not conduc...

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): D06M11/48D06M11/70D06M13/144D06M13/207D06M11/17D06M101/06
CPCD06M13/144D06M13/207D06M11/70D06M11/48D06M11/17D06M2101/06
Inventor 梁志结毛庆辉贾维妮张小丽李彤彤
Owner NANTONG UNIVERSITY
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