Alginic acid fluorescent fiber material and preparation and application

A fluorescent fiber and alginic acid technology, which is applied in the direction of luminescent materials, fiber treatment, spinning solution preparation, etc., can solve the problems of poor dispersion of fluorescent substances, and achieve the effect of good fluorescence performance and high intensity

Inactive Publication Date: 2015-12-16
BEIJING INSTITUTE OF GRAPHIC COMMUNICATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The invention overcomes the disadvantages of fluorescent fiber prepared by wet spinning method, that is, the fluorescent substance used is insoluble in water and has poor dispersion in matrix materials

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] Raw materials: (1) Sodium alginate, white, with a viscosity of 400-700mP.s (25°C). (2) Hydrophilic cadmium telluride (CdTe) nanocrystals with a concentration of 5 μmol / L. (3) Anhydrous calcium chloride, analytically pure.

[0047] Preparation steps:

[0048] (1) Prepare blended spinning solution. The sodium alginate aqueous solution of a certain concentration is prepared first, then added into the nano crystal solution, and stirred to obtain a blended spinning solution.

[0049] (2) Preparation of fluorescent fibers. Alginic acid / cadmium telluride (CdTe) nanocrystalline composite fluorescent fibers were prepared by wet spinning process.

[0050] The blended spinning solution prepared in step (1) is used as the spinning solution, and the following process route is adopted to prepare fluorescent fibers.

[0051] Blended spinning solution - spinneret - coagulation solution - stretching solution - washing solution - alginate fiber.

[0052] The technical conditions of...

Embodiment 2

[0061] Raw materials: (1) Sodium alginate, white, viscosity 400-700mP.s. (2) Water-soluble cadmium telluride (CdTe) nanocrystals with a concentration of 5 μmol / L. (3) Anhydrous calcium chloride, analytically pure.

[0062] Preparation steps:

[0063] (1) Prepare blended spinning solution. The sodium alginate aqueous solution of a certain concentration is prepared first, then added into the nano crystal solution, and stirred to obtain a blended spinning solution.

[0064] (2) Preparation of fluorescent fibers. Alginic acid / cadmium telluride (CdTe) nanocrystalline composite fluorescent fibers were prepared by wet spinning process.

[0065] The blended spinning solution prepared in step (1) is used as the spinning solution, and the following process route is adopted to prepare fluorescent fibers.

[0066] Blended spinning solution - spinneret - coagulation solution - stretching solution - washing solution - alginate fiber.

[0067] The technical conditions of the process ar...

Embodiment 3

[0076] Raw materials: (1) Sodium alginate, white, viscosity 400-700mP.s. (2) Water-soluble cadmium telluride (CdTe) nanocrystals with a concentration of 5 μmol / L. (3) Anhydrous calcium chloride, analytically pure.

[0077] Preparation steps:

[0078] (1) Prepare blended spinning solution. A sodium alginate aqueous solution with a certain concentration is prepared, then added into the nanocrystal solution, and stirred to obtain a blended spinning solution.

[0079] (2) Preparation of fluorescent fibers. Alginic acid / cadmium telluride (CdTe) nanocrystalline composite fluorescent fibers were prepared by wet spinning process.

[0080] The blended spinning solution prepared in step (1) is used as the spinning solution, and the following process route is adopted to prepare fluorescent fibers.

[0081] Blended spinning solution - spinneret - coagulation solution - stretching solution - washing solution - alginate fiber.

[0082] The technical conditions of the process are:

[...

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Abstract

The invention discloses an alginic acid fluorescent fiber material and preparation and application, and belongs to the field of the printing and packaging technology and the anti-counterfeit technology. Alginic acid / cadmium telluride (CdTe) nanocrystalline composite fluorescent fiber is adopted. A method includes the steps of firstly, preparing a blend spinning solution of cadmium telluride (CdTe) nanocrystalline and sodium alginate; secondly, preparing the fluorescent fiber; thirdly, preparing the alginic acid / cadmium telluride (CdTe) nanocrystalline composite fluorescent fiber through a wet spinning method; fourthly, conducting spinning through the blend spinning solution in the first step by means of a spinning head; fifthly, conducting stretching in stretching liquid after a coagulating bath; sixthly, conducting washing to form the fluorescent fiber. The alginic acid fluorescent fiber material can be applied to various types of anti-counterfeit paper and cloth.

Description

technical field [0001] The invention relates to an anti-counterfeiting material and a preparation method thereof, in particular to a sodium alginate anti-counterfeiting material and its preparation and application, and belongs to the fields of printing and packaging technology and anti-counterfeiting technology. Background technique [0002] Fluorescent fiber can emit different colors under the irradiation of ultraviolet light, and when the ultraviolet light disappears, it will return to the original color fiber, thus playing an anti-counterfeiting role. [0003] At present, the preparation of fluorescent fibers can adopt the melt spinning method, that is, the fluorescent substances are directly added to the fiber-forming polymer, and then melt-spun. This method is mainly suitable for some synthetic fibers, such as polyester, polypropylene and so on. For fibers that are not suitable for melt spinning, such as polyacrylonitrile, cellulose fiber, polyvinyl alcohol, etc., wet ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F9/04D01F1/10C09K11/88D01D5/06D01D1/02D01D5/30
Inventor 刘全校
Owner BEIJING INSTITUTE OF GRAPHIC COMMUNICATION
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