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False-proof special-purpose rare earth luminescent fiber

A rare earth luminescence and fiber technology, applied in luminescent materials, chemical instruments and methods, etc., can solve problems such as limitations and unscientificity, and achieve the effects of long service life, high luminous efficiency and good development prospects

Inactive Publication Date: 2008-03-12
JIANGNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But the Achilles' heel of these materials is that their identification is only limited to visual effects, that is, to judge its authenticity by virtue of the color of the fiber itself or the light that the fiber can emit a specific color.
And such a visual effect is actually very easy to imitate, and it is also unscientific, because it is impossible for the naked eye to distinguish colors accurately to the level of the wavelength of light. For example, the different fluorescent lamps we see emit the same white light. But we can't say that the materials used in these fluorescent lamps are exactly the same. In fact, different fluorescent lamps have different emission spectra.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Embodiment 1 (rare earth polyester luminous fiber for anti-counterfeiting)

[0019] First the Sr(NO 3 ) 2 , Al(NO 3 ) 3 9H 2 O, Eu 2 o 3 、Dy 2 o 3 Dissolve in water and nitric acid respectively to obtain a metal nitrate solution, add a certain amount of non-ionic surfactant, add ammonia solution drop by drop under stirring at about 90±2°C to form a sol, and slowly evaporate and dehydrate the solvent to obtain The gel was dried at 60°C, covered with activated carbon in a high-temperature electric furnace, and burned at 1150°C for 1 to 2 hours to form raw materials, which were then crushed and screened to obtain a light-storing luminescent material suitable for spinning.

[0020] After drying the polyester chips at 100°C for 25 hours, add the above-mentioned luminescent material in a proportion of 50%, the unit is mass percentage (the same below), and then add flow stabilizer fatty acid monoglyceride 0.03%, oxidation Stabilizer triphenyl phosphite 0.04%, anti-ult...

Embodiment 2

[0022] Embodiment 2 (rare earth polypropylene luminous fiber for anti-counterfeiting)

[0023] Firstly, according to the method in Example 1, a light-storing luminescent material suitable for spinning is prepared. Then add rare earth luminescent material in the proportion of 4% to the polypropylene slice, then add flow stabilizer fatty acid monoglyceride 0.02%, oxidation stabilizer trimethyl phosphate 0.02%, anti-ultraviolet agent benzophenone 0.02%, crosslinking Agent trimethylolpropane trimethacrylate 0.01%, carrier 0.1%, dispersant barium stearate 0.1%, and then generate polypropylene spinning solution at a temperature of 200 ° C, combined with a melting temperature of 180 ° C, 3000 meters Spinning at a winding speed of 1 / min, and the filaments are cut to become special anti-counterfeiting rare earth polypropylene luminescent fibers.

Embodiment 3

[0024] Embodiment 3 (rare earth polyamide luminescent fiber for anti-counterfeiting)

[0025] Firstly, according to the method in Example 1, a light-storing luminescent material suitable for spinning is prepared. Then dry the polyamide slices at about 115°C for about 20 hours, add rare earth luminescent materials in a proportion of 25%, and then add flow stabilizer polyoxyethylene oxypropyl ether 0.02%, oxidation stabilizer trimethyl phosphate 0.03%, anti UV agent benzotriazole 0.03%, crosslinking agent trimethylolpropane trimethacrylate 0.005%, carrier 0.1%, dispersant barium stearate 0.2%, and then generate polyamide spinning at a temperature of 250°C Liquid, through injection belt cutting pelletizing to make anti-counterfeiting special polyamide light-emitting fiber spinning masterbatch. The polyamide spinning masterbatch and polyamide chips produced above were formulated into spinning material at a ratio of 1:5, so that the ratio of luminescent material to spinning materi...

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Abstract

The invention relates to textile products and fraud-proof technical field, in particular to a fraud-proof special rare-earth luminescent fibre. The fraud-proof special rare-earth luminescent fibre is made of rare-earth luminous material as substrate, and polyester, polyropylene or polyamide as carrier in combination with special filature techniques. Due to adoption of different rare-earth luminescent materials, fiber basic bodies and fabrication techniques, production of the rare-earth luminous fibre includes different transmission spectrums similar to human finger prints with uniqueness. Therefore, the spectrums are difficult to deciphere or copy. The fiber can be utilized in novel identification and fraud-proof technologies, such as all kinds of brand trademarks, packings, certificates, securities and etc, and have perfect development foreground.

Description

technical field [0001] The invention relates to the technical fields of textile products and anti-counterfeiting, in particular to a special anti-counterfeiting rare earth luminescent fiber. Background technique [0002] Fiber has been used as an anti-counterfeit material for more than one hundred years, and fluorescent fiber has also appeared as an anti-counterfeit material. But the Achilles heel of these materials is that their identification is only limited to the visual effect, that is, to judge its authenticity by virtue of the color of the fiber itself or the light that the fiber can emit a specific color. And such a visual effect is actually very easy to imitate, and it is also unscientific, because it is impossible for the naked eye to distinguish colors accurately to the level of the wavelength of light. For example, the different fluorescent lamps we see emit the same white light. But we can't say that the materials used in these fluorescent lamps are exactly the ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F1/10C09K11/78
Inventor 葛明桥赵菊梅李永贵
Owner JIANGNAN UNIV
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