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Photochromic fabric and preparation method thereof

A photochromic and fabric technology, applied in the field of photochromic fabrics and their preparation, can solve the problems of photochromic agent falling off, poor discoloration effect, and inability to satisfy consumers in functionality and comfort.

Pending Publication Date: 2021-12-03
郑晓宇
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, most of the existing glossy color-changing fabrics adopt post-finishing technology, which will easily cause the photosensitive color-changing agent to fall off from the fabric in the subsequent use and cleaning process, resulting in poor color-changing effect. The photochromic function can not meet the needs of consumers in terms of other functions and comfort

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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  • Photochromic fabric and preparation method thereof
  • Photochromic fabric and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0034] A photosensitive color-changing fabric mainly includes, by weight, 115 parts of cellulose, 172 parts of self-made spiropyran, and 138 parts of self-made benzotriazole.

[0035] A method for preparing a photosensitive color-changing fabric, the preparation method of the photosensitive color-changing fabric mainly includes the following preparation steps:

[0036] (1) Dissolving salicylaldehyde in 10.87 times of salicylaldehyde mass fraction is 2% sodium hydroxide solution, and is placed in an ice bath at -2°C to obtain salicylaldehyde-sodium hydroxide solution; the salicylaldehyde mass fraction is 0.64 Diaminobenzenesulfonanilide was dissolved in 50% sulfuric acid with 20 times the mass of salicylaldehyde, heated in a water bath at 120°C, stirred at 200rpm until dissolved, cooled until crystals no longer appeared, at 0°C, with 1mL Adding 0.2 times the mass fraction of salicylaldehyde mass at a speed of 35% nitrous acid solution to obtain a bright yellow clear solution; w...

Embodiment 2

[0049] A photosensitive color-changing fabric mainly includes, by weight, 115 parts of cellulose, 172 parts of self-made spiropyran, and 138 parts of self-made benzotriazole.

[0050] A method for preparing a photosensitive color-changing fabric, the preparation method of the photosensitive color-changing fabric mainly includes the following preparation steps:

[0051] (1) Place trimethylindole, iodopropionic acid with 1.24 times the mass of trimethylindole, and methyl ethyl ketone with 0.9 times the mass of trimethylindole in a two-necked bottle, and heat up to 100°C under a nitrogen atmosphere. After reflux reaction for 3 hours, keep it warm at 80°C for 28 minutes, add ultrapure water with 0.8 times the mass of trimethylindole, wash with chloroform until the solution is colorless, and rotary evaporate at 60°C and 200rpm for 17min to obtain trimethylindole iodide compound;

[0052] (2) Butanone with 11.9 times the mass of salicylaldehyde, trimethylindole iodide with 2.1 time...

Embodiment 3

[0063]A photosensitive color-changing fabric mainly includes, by weight, 115 parts of cellulose, 172 parts of modified salicylaldehyde, and 138 parts of self-made benzotriazole.

[0064] A method for preparing a photosensitive color-changing fabric, the preparation method of the photosensitive color-changing fabric mainly includes the following preparation steps:

[0065] (1) Dissolving salicylaldehyde in 10.87 times of salicylaldehyde mass fraction is 2% sodium hydroxide solution, and is placed in an ice bath at -2°C to obtain salicylaldehyde-sodium hydroxide solution; the salicylaldehyde mass fraction is 0.64 Diaminobenzenesulfonanilide is dissolved in 50% sulfuric acid with 20 times the mass of salicylaldehyde, heated in a water bath at 120°C, stirred at 200rpm until dissolved, cooled until crystals no longer appear, at 0°C, with 1mL / Adding 0.2 times the mass fraction of salicylaldehyde mass fraction at a speed of min is a 35% nitrous acid solution to obtain a bright yello...

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 photochromic fabric and a preparation method thereof. The preparation method comprises the following steps of modifying salicylaldehyde by using diaminobenzene sulfonyl aniline, introducing an azo group, enabling the fiber to have a photochromic effect, generating a spiropyrane structure with trimethylindole to gain the photochromic effect, and preparing the photochromic fiber with cellulose; utilizing self-made benzotriazole to modify the photochromic fiber, so that the fiber has an anti-ultraviolet effect; meanwhile, increasing the number of hydrophobic groups so as to improve the waterproof and moistureproof effects of the fiber; and finally, preparing the fabric through spinning and weaving, wherein according to the self-made benzotriazole, hydroxyl o-phenylenediamine and diaminophenyl butadiyne are subjected to a reaction to generate benzotriazolyl with an anti-ultraviolet effect. The photochromic fabric prepared by the invention has a photochromic effect, ultraviolet resistance, water resistance and washability.

Description

technical field [0001] The invention relates to the technical field of textiles, in particular to a photosensitive color-changing fabric and a preparation method thereof. Background technique [0002] With the improvement of people's living standards, the pursuit of clothing fabrics is not only for keeping warm, but also people's requirements for beauty and comfort are constantly improving. The color of the clothes is basically determined by the color of the fabric. When making clothes, you can choose a single color of fabric, or you can use a variety of fabrics for splicing. However, no matter which method is used, once the clothes leave the factory, they will never Color cannot be changed. Therefore, no matter what color clothes are worn for a long time, they will look monotonous. [0003] Nowadays, people use the principle of bionics and high-tech to develop a chemical fiber that changes color automatically, called photochromic fiber. It adopts the method of introducin...

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): D01D5/00D01D1/02D03D15/225D03D15/547D04B1/14D04B21/00D06M13/352D01F2/00D01F1/10D06M101/06
CPCD06M13/352D01F2/00D01F1/10D06M2101/06D06M2200/25D06M2200/12D01D5/0007C07D249/18C07D491/052C09K9/02C09K2211/1033C09K2211/1059
Inventor 郑晓宇
Owner 郑晓宇
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