Preparation method, obtained material and application of photo/thermal dichromic fiber

A color-changing fiber and color-changing technology, which is applied in the fields of fiber chemical characteristics, rayon manufacturing, textiles and papermaking, etc., can solve the problems of unstable product performance, poor response sensitivity, complex process, etc., and achieve low cost, low cost, and process controllable effect

Active Publication Date: 2018-09-18
JIANGNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, the preparation of diacetylenic polymer nanofibers in the prior art is often complex and costly, and the performance of the obtained product is not stable enough, and the response sensitivity is poor.

Method used

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  • Preparation method, obtained material and application of photo/thermal dichromic fiber
  • Preparation method, obtained material and application of photo/thermal dichromic fiber
  • Preparation method, obtained material and application of photo/thermal dichromic fiber

Examples

Experimental program
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Effect test

Embodiment 1

[0031] (1) Preparation of a uniform and stable spinning solution: under dark conditions, add a certain amount of 10,12-pentacosadiynoic acid (PCDA) to the dichloromethane / N,N'-dimethyl In a mixed solvent of formamide (1:1 / w:w), the ice bath was sonicated for 0.5 h to fully dissolve PCDA in dichloromethane. Polyethylene oxide (PEO) was mixed with thermosetting polyurethane at a ratio of 3:7, and after magnetic stirring at 70°C for 6 hours, it was dissolved in dichloromethane / N,N'-dimethylformamide (1:1 / w :w) in a mixed solvent to obtain a mixed solution. The above two mixed solutions are mixed in a certain ratio, and after being fully stirred, a uniform and stable spinning solution is obtained.

[0032] The concentration of the mixed polymer in the spinning dope is 10w%, and the concentration of the PCDA is 1w%.

[0033] (2) Electrospinning device using horizontal spinning. Take 3ml of spinning stock solution with a syringe, after standing to defoam, control the flow rate of...

Embodiment 2

[0036] (1) Prepare a uniform and stable spinning dope: under dark conditions, add a certain amount of 10,12-tracosadiynoic acid to dichloromethane / N,N'-dimethylformamide ( 1:1 / w:w) in a mixed solvent, sonicate in an ice bath for 0.5 h to fully dissolve PCDA in dichloromethane. Polymethyl methacrylate (PMMA) was mixed with thermosetting polyurethane at a ratio of 4:6, and after magnetic stirring at 70°C for 6 hours, it was dissolved in dichloromethane / N,N'-dimethylformamide (1:1 / w:w) in a mixed solvent to obtain a mixed solution. The above two mixed solutions are mixed in a certain ratio, and after being fully stirred, a uniform and stable spinning solution is obtained.

[0037] The concentration of the mixed polymer in the spinning dope is 13w%, and the concentration of the 10,12-tracosadiynoic acid is 1.5w%.

[0038](2) Electrospinning device using horizontal spinning. Take 3ml of spinning stock solution with a syringe, after standing for defoaming, control the flow rate ...

Embodiment 3

[0041] (1) Preparation of a uniform and stable spinning solution: under dark conditions, add a certain amount of 10,12-pentacosadiyn-1-ol to the dichloromethane / N,N'-dimethyl In a mixed solvent of formamide (1:1 / w:w), the ice bath was sonicated for 0.5 h to fully dissolve PCDA in dichloromethane. Mix polystyrene (PS) and thermosetting polyurethane at a ratio of 5:5, and dissolve it in dichloromethane / N,N'-dimethylformamide (1:1 / w:w ) in a mixed solvent to obtain a mixed solution. The above two mixed solutions are mixed in a certain ratio, and after being fully stirred, a uniform and stable spinning solution is obtained.

[0042] The concentration of mixed polymers in the spinning dope is 16w%, and the concentration of 10,12-pentacosadiyn-1-ol is 2w%.

[0043] (2) Electrospinning device using horizontal spinning. Take 3ml of spinning stock solution with a syringe, and after standing for defoaming, control the flow rate of spinning solution to 0.8ml / h, apply a working voltage...

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Abstract

The invention discloses a preparation method, an obtained material and application of photo / thermal dichromic fiber. The dichromic fiber is formed through recombination of a diyne compound and a high-molecular polymer / heat-set polyurethane mixed polymer serving as a spinning base material by adopting an electrostatic spinning method. Compared with the prior art, the equipment needed in the preparation method is simple, the cost is low, the technology is controllable, the prepared photo / thermal dichromic fiber is stable in property and has the higher response sensitivity, has two different discoloring effects, and can be applied to the fields of textile and garment, chemical anti-fake, sensors and the like.

Description

technical field [0001] The invention relates to a preparation method of a photo / thermal bichromic fiber and the obtained material and application thereof, belonging to the technical field of nanofiber preparation. Background technique [0002] With the continuous development of high technology, people have higher and higher requirements for the functionalization and intelligence of materials. New material technology has become a hot field of exploration and research by scholars from all over the world. As a stress-responsive color-changing material, the color-changing fiber material can be used as a functional test in the military. It can be widely used in bills, certificates, trademarks, etc. in the field of anti-counterfeiting. In the field of clothing decoration, it caters to people's increasing demand for textiles. Diversified and personalized requirements. High and new technologies are continuously introduced into this field, which makes the development of new color-ch...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F8/16D01F1/10D01F8/10
CPCD01F1/10D01F8/10D01F8/16
Inventor 王潮霞曾婵娟张婉殷允杰陈坤林
Owner JIANGNAN UNIV
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