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In-situ preparation method for cadmium telluride/polyvinyl alcohol fluorescent fiber

A fluorescent fiber and in-situ preparation technology, which is applied in chemical instruments and methods, fiber treatment, luminescent materials, etc., can solve the problems of uneven fluorescence, easy aggregation, and poor fluorescent effect of fibers, and achieve good fluorescent effect and long-lasting fluorescent color , the effect of simple method

Inactive Publication Date: 2013-01-16
EAST UNIV OF HEILONGJIANG
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The present invention aims to solve the problem that cadmium telluride quantum dots are easy to agglomerate in the polymer solution in the existing method, resulting in uneven fluorescence of the fiber and poor fluorescence effect, and provides an in-situ preparation of cadmium telluride / polyvinyl alcohol fluorescent fiber Methods

Method used

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  • In-situ preparation method for cadmium telluride/polyvinyl alcohol fluorescent fiber
  • In-situ preparation method for cadmium telluride/polyvinyl alcohol fluorescent fiber
  • In-situ preparation method for cadmium telluride/polyvinyl alcohol fluorescent fiber

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specific Embodiment approach 1

[0011] Specific embodiment 1: The method for preparing cadmium telluride / polyvinyl alcohol fluorescent fiber in situ in this embodiment is carried out according to the following steps:

[0012] 1. Mix 1-2g of sodium borohydride, 2-3g of tellurium powder and 20-40mL of deionized water, stir until dissolved, and react in an ice-water bath at 0-4°C for 10-12 hours to obtain a sodium tellurium hydride solution;

[0013] 2. Add 90-110mL polyvinyl alcohol solution with a mass concentration of 5-7% into the three-necked bottle, and feed nitrogen gas for 30 minutes while stirring, then add 91-92mg CdCl 2 2.5H 2 O and 61-62 μL mercaptoacetic acid, while stirring, add dropwise 0.5mol / L sodium hydroxide solution until the pH value of the mixed solution in the there-necked flask is 10-11, then add 0.1mL of the sodium telluride hydride solution prepared in step 1, and Under the atmosphere, heat up to 100°C and reflux for 0.5 to 5 hours to obtain a cadmium telluride / polyvinyl alcohol spinn...

specific Embodiment approach 2

[0015] Embodiment 2: This embodiment differs from Embodiment 1 in that: in step 1, 1.6 g of sodium borohydride, 2.5 g of tellurium powder and 30 mL of deionized water are mixed. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0016] Embodiment 3: This embodiment is different from Embodiment 1 or Embodiment 2 in that: In step 2, 100 mL of polyvinyl alcohol solution with a mass concentration of 6% is added to the three-necked bottle. Others are the same as in the first or second embodiment.

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Abstract

The invention discloses an in-situ preparation method for cadmium telluride / polyvinyl alcohol fluorescent fiber and relates to a preparation method for fluorescent fiber. The invention aims to solve the problems that in the prior method, the quantum dots of cadmium telluride reunite easily in a polymer solution, the fluorescence of the fiber is led to be non-uniform, so that the fluorescent effect is poor. The in-situ preparation method comprises the following steps: firstly, sodium borohydride, tellurium powder and deionized water are mixed and reacted to obtain sodium hydrogen telluride solution under the condition of ice-water bath; secondly, polyvinyl alcohol solution is added to a three-necked flask, nitrogen is introduced to the three-necked flask while the solution in the flask is stirred, then CdCl.2.5 H2O and mercaptoacetic acid are added to the flask, sodium hydroxide solution is dropwise added to the flask while the solution in the flask is stirred, then sodium hydrogen telluride solution is added to the flask, and the solution in the flask is subjected to heating and reflux, so that telluride / polyvinyl alcohol spinning solution is obtained; and thirdly, the spinning solution is subjected to static spinning, so that the fluorescent fiber is obtained. With the in-situ preparation method, the quantum dots of cadmium telluride can be uniformly scattered in polymer, and the prepared fluorescent fiber has good fluorescent effect. The in-situ preparation method is used for preparing the fluorescent fiber.

Description

technical field [0001] The invention relates to a method for preparing fluorescent fibers. Background technique [0002] With the development of economy, counterfeit and shoddy goods, as a social phenomenon, have become a common concern of all countries in the world. Many developed countries in the world have invested a lot of power to develop various anti-counterfeiting technologies. Fluorescent anti-counterfeiting materials play an important role in anti-counterfeiting technology, among which fluorescent fibers have bright application prospects, and fluorescent fibers also have extensive application prospects in display and textile industries. At present, the preparation method of fluorescent fiber is pigment dyeing method. This method is to mix fluorescent pigment into the polymer, and then weave the fiber. Due to the short fluorescence life of fluorescent pigment, it is limited in use, and in The fluorescent effect of fluorescent pigments may fail at high temperature, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F6/50D01F1/04D01D5/00C09K11/88
Inventor 赵冬梅任德财杜宇虹
Owner EAST UNIV OF HEILONGJIANG
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