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Cold/thermal light source double-response fluorescence chameleon fiber and preparation and application thereof

A color-changing fiber and responsive technology, which is applied to the dual-responsive fluorescent color-changing fiber of cold/heat light source and its preparation and application fields, can solve the problems of low fiber strength, inability to change multiple colors and light sensing indications, and difficulty in weaving. , to achieve the effect of wide color selectivity

Active Publication Date: 2020-03-31
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The technical problem to be solved by the present invention is to provide a fluorescent color-changing fiber with dual response to cold / heat light source and its preparation and application, which overcomes the low strength of the fiber in the prior art, which is difficult to weave, and cannot change multiple colors under various stimuli. In order to realize the defect of sensing indication, the present invention can obtain a core-shell structure fiber with two parallel core layers inside a fiber, and then add a water-based functional material to obtain a functional core-shell structure polylactic acid fiber

Method used

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  • Cold/thermal light source double-response fluorescence chameleon fiber and preparation and application thereof
  • Cold/thermal light source double-response fluorescence chameleon fiber and preparation and application thereof
  • Cold/thermal light source double-response fluorescence chameleon fiber and preparation and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0041] (1) Disperse 25g of polylactic acid particles in 75g of dichloromethane solvent, ultrasonically disperse for 8 hours to obtain a uniform and clear polylactic acid solution, weigh 100mL of polyethylene glycol 400 for later use; 5g of green fluorescent ink, weigh 5g of ink that changes from gray to cyan at a heat radiation temperature of 28°C, disperse cold light source fluorescent (photoluminescence) ink and hot light source color change (temperature-sensitive color change) ink in 90g to remove Add 5g of polyvinyl alcohol to deionized water mixed with cold light source fluorescence (photoluminescence) ink and heat light source color change (temperature-sensitive color change) ink, and ultrasonically disperse for 7 hours to obtain a 254nm ultraviolet light excitation. The mixed aqueous solution of white green fluorescent ink and polyvinyl alcohol, and the mixed aqueous solution of gray-colored ink and polyvinyl alcohol with a heat radiation temperature above 28°C are ready...

Embodiment 2

[0049] (1) Disperse 22g of polylactic acid particles in 78g of dichloromethane solvent, ultrasonic 8h to obtain a uniform and clear polylactic acid solution, weigh 140mL of polyethylene glycol 400 for later use; weigh it under the excitation of 254nm ultraviolet light from white to green fluorescence Weigh 7g of the ink that changes from purple to indigo at a heat radiation temperature of 31°C, and disperse the fluorescent (photoluminescence) ink caused by the cold light source and the color-changing (temperature-sensitive discoloration) ink caused by the hot light source in 85g of deionized water, respectively. , and add 8g polyvinyl alcohol to the deionized water mixed with cold light source fluorescence (photoluminescence) ink and heat light source color change (temperature-sensitive color change) ink, and ultrasonically disperse for 7 hours to obtain a white luminescence under the excitation of 254nm ultraviolet light. A mixed aqueous solution of 12g of green fluorescent in...

Embodiment 3

[0053] (1) Disperse 20g of polylactic acid particles in 80g of dichloromethane solvent, ultrasonically disperse for 8 hours to obtain a uniform and clear polylactic acid solution, weigh 200mL of polyethylene glycol 400 for later use; 9g of green fluorescent ink, weigh 9g of ink that changes from purple to indigo at a heat radiation temperature of 28°C or more, and disperse the fluorescent (photoluminescent) ink caused by cold light source and the color-changing (temperature-sensitive color-changing) ink caused by hot light source in 81g to remove Add 10g of polyvinyl alcohol to deionized water mixed with cold light source fluorescence (photoluminescence) ink and thermal light source color change (temperature-sensitive color change) ink, and ultrasonically disperse for 7 hours to obtain The mixed aqueous solution of white green fluorescent ink and polyvinyl alcohol, and the mixed aqueous solution of ink and polyvinyl alcohol that change from purple to indigo at a heat radiation ...

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Abstract

The invention relates to a cold / thermal light source double-response fluorescence chameleon fiber and preparation and application thereof. The fiber is a core-shell structure fiber with uniform fineness, and comprises a polylactic acid shell layer and two parallel core layers, wherein the two parallel core layers are a cold light source-induced fluorescent ink and polyvinyl alcohol mixture and a thermal light source-induced chameleon ink and polyvinyl alcohol mixture. The fiber disclosed by the invention has photosensitivity and temperature sensitivity, two effects of fluorescence and chameleon are simultaneously existent in the core of one fiber, so that the fiber can be extensively used for a product anti-counterfeiting mark, textile and garment such as special garment, aviation and navigation, national defense industry, building decoration, transportation, nightwork, daily life, leisure and entertainment and like fields.

Description

technical field [0001] The invention belongs to the field of color-changing fiber materials and their preparation and application, in particular to a fluorescent color-changing fiber with dual response to cold / heat light sources and its preparation and application. Background technique [0002] At present, wearable electronic devices have been widely used in many fields such as microelectronics, biomedicine, transportation and aerospace. With the continuous development of wearable fiber-shaped energy devices, people have put forward higher requirements for fiber-shaped light-emitting and color-changing devices. In recent years, the application of luminescent and color-changing materials in garment design has received some attention. Reasonable combination of luminescent color-changing materials and clothing can expand the design space and stimulate the potential of luminescent materials. [0003] The application of luminescent materials in clothing has attracted attention,...

Claims

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Application Information

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IPC IPC(8): D01F8/14D01F8/10D01F1/10D01D5/34C09K11/02
CPCD01F8/14D01F8/10D01F1/10D01D5/34C09K11/025
Inventor 王宏志位艳芳张伟李耀刚张青红侯成义
Owner DONGHUA UNIV
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