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Carbon nanotube electrically conductive fibre and method for making same

A carbon nanotube and conductive fiber technology, applied in the field of conductive fiber and its preparation, can solve the problems of poor washing resistance, poor conductive effect, difficult spinning, etc., and achieve the effects of high production efficiency, reduced investment, and high technical content

Inactive Publication Date: 2005-01-26
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a carbon nanotube conductive fiber and a preparation method thereof, so as to solve problems in the prior art such as poor conductive effect, difficult spinning, poor washing resistance, complicated process, poor hand feeling, etc. shortcoming

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Add 0.2 grams of single-walled carbon nanotubes to 100 grams of water, mix them uniformly, then add 1 gram of lithium dodecyl sulfate to the above solution, disperse by ultrasonic vibration, centrifuge, remove the precipitated part, and obtain carbon nanotubes Disperse homogeneously in aqueous solution.

[0026] The polypropylene powder is poured into the prepared carbon nanotube aqueous solution, mechanically stirred evenly, the temperature is raised to volatilize the water, and the composite powder with carbon nanotubes attached to the surface of the polypropylene is obtained. Pelletized by a screw extruder to obtain chips that can be used for spinning. A carbon nanotube / polypropylene composite conductive fiber is obtained by a melt spinning method. The mass content of carbon nanotubes in the fiber is 1%, and the electrical conductivity is 5×10 -5 S / cm.

Embodiment 2-8

[0028] The shown carbon nanotube aqueous solution and its preparation method are the same as in Example 1, and see Table 1 for other conditions. Which join method (Disp+H 2 O)+CNT means that the dispersant is added to the water first, and after dissolving, the conductive component is added to the above solution, and the others are the same.

[0029] Table 1 Examples 2-8

[0030] Example

Conductive component (g)

Dispersant (g)

water (g)

join method

2

Single-walled carbon nanotubes 1

Sodium heptylbenzenesulfonate 4

100

(Disp+H 2 O)+CNT

3

Single-walled carbon nanotubes 1

Sodium Lauryl Sulfate 0.1

100

(Disp+CNT)+H 2 o

4

Multi-walled carbon nanotubes 0.1

Butylbenzenesulfonate amine 0.5

100

(CNT+H 2 O)+Disp

5

Multi-walled carbon nanotubes 0.4

Magnesium toluenesulfonate 4

100

(Disp+H 2 O)+CNT

6

Multi-walled carbon nanotubes 2

...

Embodiment 3

[0034] The aqueous solution of carbon nanotubes prepared in Example 3 was uniformly sprayed on the surface of polyamide 66 powder with a sprayer, and then the temperature was raised to volatilize the water to obtain a composite powder with carbon nanotubes attached to the surface of polyamide 66. Pelletized by a screw extruder to obtain chips that can be used for spinning. A carbon nanotube / polypropylene composite conductive fiber is obtained by a melt spinning method. The mass content of carbon nanotubes in the fiber is 0.1%, and the electrical conductivity is 3×10 -7 S / cm.

[0035] Pour the polyester powder into the carbon nanotube aqueous solution prepared in Example 6, mechanically stir evenly, raise the temperature to volatilize the water, and obtain a composite powder with carbon nanotubes attached to the surface of the polyester. Pelletized by a screw extruder to obtain chips that can be used for spinning. A carbon nanotube / polyester composite conductive fiber is obt...

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Abstract

The invention provides a carbon nanotube electrically conductive fibre and method for making same, wherein the conductive fiber comprises a carbon nano tube, dispersing agent and thermoplastic polymeric compound, the preparation comprises dispersing the carbon nano tube into water at the presence of the dispersing agent, mixing the carbon nano tube aqueous solution with thermoplastic polymer, drying, granulating and spinning.

Description

technical field [0001] The invention relates to a conductive fiber and a preparation method thereof, in particular to a conductive fiber with carbon nanotubes or carbon nanofibers as conductive components and a preparation method thereof. Background technique [0002] The vast majority of polymer materials are insulating materials, and chemical fibers made of polymer materials, such as polyester, polypropylene, nylon, and acrylic fibers, are also insulating. These chemical fibers continue to accumulate static electricity during use, but the charges cannot be released, and eventually carry a relatively high potential. The static electricity carried by chemical fibers will pose a serious threat to the safety production of gas stations, oil depots and some special occasions. Chemical fiber clothing also has adverse effects on human health due to often having static electricity. [0003] To solve the adverse effects of this type of chemical fiber static electricity, the main w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08K7/06C08L23/00C08L29/04C08L67/00C08L77/00
Inventor 张清华陈大俊
Owner DONGHUA UNIV
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