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A method of surface-modified carbon nanotubes applied to multifunctional dyed wool

A carbon nanotube and surface modification technology, applied in the field of wool dyeing, to achieve the effects of great application value, improvement of dyeing fastness, and easy operation of dyeing process

Active Publication Date: 2021-06-25
HEBEI UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Research on wool has not yet covered

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0021] (1) Single-walled carbon nanotubes (diameter: 1-2 nm, length: 5-30 μm) in H 2 SO 4 and HNO 4 (Volume ratio 3:1) Ultrasonic reaction at room temperature in the mixed solution for 4 h, washed with water until neutral, and vacuum dried to obtain carboxylated carbon nanotubes;

[0022] (2) Disperse carboxylated carbon nanotubes in diethylenetriamine, add 2-(7-azobenzotriazole)-N,N,N',N'-tetramethyluronium hexafluorophosphate , react at 40°C for 5 h, wash with ethanol, and dry in vacuum to obtain aminated carbon nanotubes;

[0023] (3) Ultrasonically disperse the aminated carbon nanotubes in a mixture of water and acetone, adjust the pH value to 6 with sodium carbonate, add 2,4,6-trifluoro-5-chloropyrimidine dropwise in an ice-water bath, and use sodium carbonate to Adjust the pH value to 6-6.5, ultrasonically react at 20-30°C for 48 hours, wash with ethanol, wash with water, and dry in vacuum to obtain modified carbon nanotubes;

[0024] (4) Ultrasonically disperse the ...

Embodiment 2

[0027] (1) Single-walled carbon nanotubes (diameter: 1-2 nm, length: 5-30 μm) in H 2 SO 4 and HNO 4 (Volume ratio 3:1) Ultrasonic reaction at room temperature in the mixed solution for 4 h, washed with water until neutral, and vacuum dried to obtain carboxylated carbon nanotubes;

[0028] (2) Disperse carboxylated carbon nanotubes in diethylenetriamine, add 2-(7-azobenzotriazole)-N,N,N',N'-tetramethyluronium hexafluorophosphate , react at 40°C for 5 h, wash with ethanol, and dry in vacuum to obtain aminated carbon nanotubes;

[0029] (3) Ultrasonically disperse the aminated carbon nanotubes in a mixture of water and acetone, adjust the pH value to 6 with sodium carbonate, add 2,4,6-trifluoro-5-chloropyrimidine dropwise in an ice-water bath, and use sodium carbonate to Adjust the pH value to 6-6.5, ultrasonically react at 20-30°C for 48 hours, wash with ethanol, wash with water, and dry in vacuum to obtain modified carbon nanotubes;

[0030] (4) Ultrasonically disperse the ...

Embodiment 3

[0033] (1) Multi-walled carbon nanotubes (outer diameter: 2 SO 4 and HNO 4 (Volume ratio 3:1) Ultrasonic reaction at room temperature in the mixed solution for 4 h, washed with water until neutral, and vacuum dried to obtain carboxylated carbon nanotubes;

[0034] (2) Disperse carboxylated carbon nanotubes in diethylenetriamine, add 2-(7-azobenzotriazole)-N,N,N',N'-tetramethyluronium hexafluorophosphate , react at 40°C for 5 h, wash with ethanol, and dry in vacuum to obtain aminated carbon nanotubes;

[0035] (3) Ultrasonically disperse the aminated carbon nanotubes in a mixture of water and acetone, adjust the pH value to 6 with sodium carbonate, add 2,4,6-trifluoro-5-chloropyrimidine dropwise in an ice-water bath, and use sodium carbonate to Adjust the pH value to 6-6.5, ultrasonically react at 20-30°C for 48 h, wash with ethanol, wash with water, and dry in vacuum to obtain modified carbon nanotubes;

[0036](4) Ultrasonically disperse the modified carbon nanotubes into ...

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Abstract

The invention relates to a method for applying surface-modified carbon nanotubes to multifunctional dyeing wool, comprising: oxidizing the carbon nanotubes with a mixture of sulfuric acid and nitric acid, and reacting the carboxyl groups on the surface of the carbon nanotubes with diethylenetriamine to obtain a surface Carbon nanotubes with amino groups. Finally, 2,4,6-trifluoro-5-chloropyrimidine is grafted onto the surface of the aminated carbon nanotube to obtain a carbon nanotube with a pyrimidine active group on the surface. Ultrasonic disperse the modified carbon nanotubes into water, add sodium sulfate, acetic acid, ammonium sulfate, add loose wool, tops, skeins or fabrics at 40°C, raise the temperature to 100°C and soak for 1‑3h, wash with water, and dry in the air , to get black wool products. The dyeing method of the invention has little damage to wool, uniform color, increased chemical bonding force between carbon nanotubes and wool, improved color fastness, and broadens the application of carbon nanotubes in the field of multifunctional dyeing wool.

Description

technical field [0001] The invention belongs to the field of wool dyeing, and in particular relates to a method for applying surface-modified carbon nanotubes to multifunctional dyeing wool. Background technique [0002] Carbon nanotubes have attracted widespread attention in the scientific community since they were accidentally discovered by Iijima in 1991 when observing arc-evaporated graphite products under a high-resolution electron microscope. This tubular carbon material, which is rolled from 2-50 layers of graphite sheets, has surprisingly good properties. Its abnormal mechanical, electromagnetic and chemical properties determine its broad application prospects in the fields of electronic devices, fiber materials, biosensors and so on. [0003] The application of carbon nanotubes in the field of textiles is still in development. Carbon nanotubes can not only be made into carbon nanotube fibers directly by wet spinning, airgel spinning, film twisting and other method...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06P1/673D06P3/14D06P5/22
CPCD06P1/673D06P3/14D06P5/22
Inventor 许佳吴军玲
Owner HEBEI UNIVERSITY OF SCIENCE AND TECHNOLOGY