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A kind of polyvinylpyrrolidone coated fluorescent yarn and preparation method thereof

A polyvinylpyrrolidone and yarn technology, applied in the field of polyvinylpyrrolidone-coated fluorescent yarn and its preparation, can solve the problem of large dye adsorption, poor yarn color fastness, poor corrosion resistance, poor strength and toughness, etc. problem, to achieve the effect of uniform color, weather resistance, levelness, corrosion resistance and service life.

Active Publication Date: 2022-05-06
DALIAN POLYTECHNIC UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Existing fluorescent yarns are generally made of cotton fibers. During the dyeing process of fluorescent dyes, the dye adsorption amount is relatively large, and the dyes and fibers are only combined through hydrogen bonds and van der Waals forces. The color fastness of the yarns after fluorescent dyeing is poor.
Due to the chemical properties of cotton fiber itself, fluorescent cotton yarn is easily affected by the external temperature and humidity environment, and its corrosion resistance, strength and toughness are not good

Method used

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  • A kind of polyvinylpyrrolidone coated fluorescent yarn and preparation method thereof
  • A kind of polyvinylpyrrolidone coated fluorescent yarn and preparation method thereof
  • A kind of polyvinylpyrrolidone coated fluorescent yarn and preparation method thereof

Examples

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Effect test

Embodiment 1

[0032] Prepare fluorescent slurry: prepare 20g / L fluorescein / ethanol solution and 30g / L PVP / ethanol solution. The PVP / ethanol solution was stirred at 90 °C for 2 h. PVP / ethanol solution was cooled and mixed with fluorescein / ethanol solution at a volume ratio of 4:1 and stirred for 2 hours to obtain fluorescent slurry.

[0033] Prepare initiator solution: prepare 1.0 wt% azobisisobutyronitrile / ethanol solution.

[0034] Preparation of fluorescent cotton yarn: one sizing of cotton yarn, the slurry is fluorescent slurry, the sizing speed is 70m / min, the slurry temperature is 80°C, the drying temperature is 70°C, and the fluorescein / PVP is adsorbed on the surface of the cotton yarn. In the second sizing process, the slurry is an initiator solution, the sizing speed is 70m / min, the slurry temperature is 90°C, and the drying temperature is 70°C, and the initiator initiates PVP cross-linking polymerization. The polymerization reaction makes the PVP cross-linked polymer coated on th...

Embodiment 2

[0040] Prepare fluorescent slurry: prepare 15g / L fluorescein / ethanol solution and 15g / L PVP / ethanol solution. The PVP / ethanol solution was stirred at 90 °C for 2 h. PVP / ethanol solution was cooled and mixed with fluorescein / ethanol solution at a volume ratio of 3:2 and stirred for 2 hours to obtain fluorescent slurry.

[0041] Prepare initiator solution: prepare 0.5 wt% azobisisobutyronitrile / ethanol solution.

[0042] Preparation of fluorescent cotton yarn: a cotton yarn sizing, the slurry is fluorescent slurry, the sizing speed is 75m / min, the slurry temperature is 90°C, the drying temperature is 70°C, and the fluorescein / PVP is adsorbed on the surface of the cotton yarn. In the second sizing process, the slurry is an initiator solution, the sizing speed is 75m / min, the slurry temperature is 90°C, and the drying temperature is 70°C, and the initiator initiates PVP cross-linking polymerization. Macromolecular or network PVP cross-linked polymer is coated on the surface of c...

Embodiment 3

[0044] Prepare fluorescent slurry: prepare 15g / L fluorescein / ethanol solution and 20g / L PVP / ethanol solution. The PVP / ethanol solution was stirred at 90 °C for 2 h. PVP / ethanol solution was cooled and mixed with fluorescein / ethanol solution at a volume ratio of 4:1 and stirred for 2 hours to obtain fluorescent slurry.

[0045] Prepare initiator solution: prepare 1.0 wt% sodium persulfate / ethanol solution.

[0046]Preparation of fluorescent cotton yarn: a cotton yarn sizing, the slurry is fluorescent slurry, the sizing speed is 80m / min, the slurry temperature is 90°C, the drying temperature is 70°C, and the fluorescein / PVP is adsorbed on the surface of the cotton yarn. In the second sizing process, the slurry is an initiator solution, the sizing speed is 80m / min, the slurry temperature is 90°C, and the drying temperature is 70°C, and the initiator initiates PVP cross-linking polymerization. Macromolecular or network PVP cross-linked polymer is coated on the surface of cotton ...

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Abstract

The invention discloses a method for preparing polyvinylpyrrolidone-coated fluorescent yarn, which belongs to the technical field of yarn processing. In the sizing process, the fluorescein dye and polyvinylpyrrolidone are sequentially coated on the surface of the yarn by two sizing methods to prepare the fluorescent yarn. The method has simple process, and the coating is prepared by polymerization initiated by polyvinylpyrrolidone free radicals, so that the fluorescent slurry is firmly bonded to the surface of the yarn, and endows the yarn with corrosion resistance, weather resistance and good level dyeing property.

Description

technical field [0001] The invention belongs to the technical field of yarn processing, and in particular relates to a fluorescent yarn coated with polyvinylpyrrolidone and a preparation method thereof. Background technique [0002] Fluorescent yarn is a high-visibility product with safety, warning, protection and identification functions, which brings convenience to people’s life. Transportation, aviation and navigation, night operations, fire emergency and daily life and other fields. Existing fluorescent yarns are generally made of cotton fibers. During the dyeing process of fluorescent dyes, the amount of dye adsorption is large, and the dyes and fibers are only combined through hydrogen bonds and van der Waals forces. The color fastness of fluorescent dyed yarns is poor. Due to the chemical properties of cotton fiber itself, fluorescent cotton yarn is easily affected by the external temperature and humidity environment, and its corrosion resistance, strength and toughn...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06M13/207D06M15/356D06M101/06
CPCD06M13/207D06M15/3562D06M2101/06
Inventor 王迎夏禹舜
Owner DALIAN POLYTECHNIC UNIVERSITY