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Photoluminescent fiber and preparation method thereof

A photoluminescence, fiber technology, applied in spinning solution preparation, fiber chemical characteristics, wet spinning, etc., can solve the problems of limited application, complex process, narrow spinning solution range, etc., and achieve excellent mechanical properties, fluorescence stability. Good performance and low cost

Inactive Publication Date: 2020-01-10
WUHAN TEXTILE UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] However, the above-mentioned preparation method is complex in process and narrow in the range of suitable spinning solution, which limits its industrial application.

Method used

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  • Photoluminescent fiber and preparation method thereof
  • Photoluminescent fiber and preparation method thereof
  • Photoluminescent fiber and preparation method thereof

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preparation example Construction

[0047] A method for preparing a photoluminescent fiber, comprising the steps of:

[0048] S1, preparing quantum dots;

[0049] S2. Preparation of spinning solution: blending a predetermined mass fraction of quantum dots and high molecular polymers in a solvent, and stirring to obtain a quantum dot / polymer spinning solution;

[0050] S3. Preparation of photoluminescent fiber: adopt wet spinning process, inject the spinning solution into the syringe, set the predetermined liquid feeding rate, spray the spinning solution into the water bath through the spinning needle, pass through the coagulation bath, and then use the predetermined volume Winding at a winding speed and drying to obtain photoluminescent fibers.

[0051]Wherein, in step S2, the mass fraction of quantum dots in the spinning solution is 0.1-10 wt%; the mass fraction of polymer in the spinning solution is 15-50 wt%.

[0052] In step S3, the volume of the syringe is 5-80 mL, the inner diameter of the spinning needl...

Embodiment 1-28

[0056] Below in conjunction with embodiment 1-28, the preparation method of photoluminescence fiber is described:

Embodiment 1

[0058] S1. Preparation of oil-dispersed silicon quantum dots:

[0059] S11. Take 0.6g of silicon powder and pour it into a container, add 20mL of absolute ethanol and 40mL of a 48% hydrofluoric acid solution and stir at room temperature with a rotation speed of 600r / min for 4.5h;

[0060] S12. Extract with an appropriate amount of n-pentane, quickly separate the dark brown solution in the upper layer into the reactor, add 20 mL of decene into the reactor, and then vacuum dry it;

[0061] S13. Put the reactor into an oven, the reaction condition is to raise the room temperature to 170° C. in 1 hour, keep at this temperature for 6 hours, and then lower the temperature to room temperature in 6 hours;

[0062] S14. After the reaction is completed, transfer the reaction kettle solution to a centrifuge tube, add petroleum ether (boiling range of 60-90°C) to 35mL for the first centrifugation, the speed is 7000r / min, and the time is 15min; take the upper layer 15mL clear liquid Add m...

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Abstract

The invention discloses a photoluminescent fiber and a preparation method thereof. Quantum dots are used as luminescent particles, high-molecular polymers are used as a spinning substrate, the quantumdots and the high-molecular polymers are blended to prepare a spinning solution, and then the photoluminescent fiber is prepared through a wet spinning process. The photoluminescent fiber prepared bythe method has excellent optical stability and mechanical properties, and has a good application prospect in the fields of clothing, pharmacy, environment, petrochemical industry, anti-counterfeitingindustry, gas sensors, human health monitors and the like. The preparation method provided by the invention is simple to perform, has a wide application range of spinning solutions, and is low in cost and easy to apply to large-scale industrial application.

Description

technical field [0001] The invention relates to the field of preparation of luminescent fiber materials, in particular to a photoluminescent fiber and a preparation method thereof. Background technique [0002] Photoluminescent fibers refer to functional fibers that produce new types of fluorescence due to electronic transitions on the surface or inside of the fiber under the excitation of ultraviolet light or laser light. Due to their excellent stealth, camouflage, anti-counterfeiting and fluorescent indication functions, photoluminescent fibers have been widely used in aerospace, flexible display, process monitoring, product anti-counterfeiting identification and other fields. [0003] At present, the most researched is that the luminescent material is quantum dots. Quantum dots (Quantum dots) have incomparable advantages over other luminescent materials. Quantum dots have a wide and continuous distribution of excitation spectrum, while the emission spectrum is narrow and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01D13/00D01D1/02D01D5/06D01F1/10
CPCD01D1/02D01D5/06D01D13/00D01F1/10
Inventor 陈东志吕佩李国青舒鑫徐卫林张春华刘欣
Owner WUHAN TEXTILE UNIV
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