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Electroconductive fibers with carbon nanotubes deposited thereon, electroconductive threads, fiber structure, and process for producing same

一种导电纤维、碳纳米管的技术，应用在纤维处理、纤维类型、纺织品和造纸等方向，能够解决没有记载合成纤维合成纤维制造方法等问题，达到优异柔软性、便于处理、优异导电性能的效果

Active Publication Date: 2011-07-20
HOKKAIDO UNIVERSITY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In addition, although this publication discloses carbon nanotube-containing fibers in which alginic acid fibers containing carbon nanotubes are coated with lactic acid-glycolic acid copolymer, this publication does not describe synthetic fibers whose surfaces are coated with carbon nanotubes. And the manufacturing method of this synthetic fiber

Method used

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  • Electroconductive fibers with carbon nanotubes deposited thereon, electroconductive threads, fiber structure, and process for producing same
  • Electroconductive fibers with carbon nanotubes deposited thereon, electroconductive threads, fiber structure, and process for producing same
  • Electroconductive fibers with carbon nanotubes deposited thereon, electroconductive threads, fiber structure, and process for producing same

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preparation example Construction

[0115] The preparation method of the dispersion liquid is not particularly limited to a specific one, and any method can be used as long as a dispersion liquid in which carbon nanotubes are stably and finely dispersed in a liquid medium (such as water) can be prepared without causing carbon nanotubes to Agglomeration (or aggregation), or formation of bundles.

[0116] In particular, according to the present invention, the preferred preparation method comprises: in the presence of surfactants (especially zwitterionic surfactants), the pH of the aqueous medium is kept at 4.0-8.0, preferably 4.5-7.5, more preferably at At the same time as 5.0 to 7.0, dispersing treatment of dispersing carbon nanotubes in an aqueous medium (water). For the dispersion treatment in this production method, a mill (media mill) using a medium (a solid medium for pulverization, such as beads or balls) is preferably used as a dispersing device. Specific examples of the media mill include bead mills usin...

Embodiment 1

[0143] (1) Preparation of aqueous carbon nanotube dispersion:

[0144] (i) Prepare an aqueous solution of surfactant by mixing 2.0 g of 3-(dimethylstearyl ammonium) propane sulfonate (zwitterionic surfactant), 5 ml of glycerin (hydration stabilizer), and 495 ml of deionized water (pH6.5).

[0145] (ii) 500ml of the aqueous surfactant solution obtained in the above step (i) and 15.2g of carbon nanotubes (manufactured by "MWCNT-7" Nano Carbon Technologies Co., Ltd.) are put into the ball mill body (cylindrical type, internal volume = 1800ml, ball diameter = 150mm, ball loading = 3200g), and the mixture was stirred by hand to obtain a paste product. The ball mill body was then placed on a rotary table (manufactured by "AS ONE" ASAHI RIKA SEISAKUSYO, Co., Ltd.), and the paste product was stirred for 1 hour to obtain a liquid product containing carbon nanotubes.

[0146] (iii) taking out all the liquid products containing carbon nanotubes prepared in the above step (ii) from the ...

Embodiment 2

[0155] (1) Preparation of aqueous carbon nanotube dispersion:

[0156] (i) Prepare an aqueous solution of surfactant by mixing 2.0 g of 3-(dimethylstearyl ammonium) propane sulfonate (zwitterionic surfactant), 5 ml of glycerin (hydration stabilizer), and 495 ml of deionized water ( pH6.5).

[0157] (ii) 500ml of the aqueous surfactant solution obtained in the above step (i) and 30.4g of carbon nanotubes (Baytube, manufactured by Bayer) are put into the ball mill body (cylindrical type, internal volume = 1800ml, ball diameter = 150mm, the filling of the ball amount = 3200 g), and stirred by hand to obtain a paste product, and then put the ball mill body on a rotary table (manufactured by "AS ONE" ASAHI RIKA SEISAKUSYO, Co., Ltd.) and stirred the paste product for 1 hour to obtain A liquid product containing carbon nanotubes.

[0158] (iii) taking out all the liquid products containing carbon nanotubes prepared in the above step (ii) from the ball mill body. To this liquid pr...

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Abstract

Disclosed is an electroconductive fiber comprising synthetic fibers and an electroconductive layer covering the surface of the synthetic fibers and containing carbon nanotubes. Not less than 60% (particularly not less than 90%) of the total surface of the synthetic fibers is covered with the electroconductive layer, and the electric resistance of the electroconductive fiber is in the range of 1*10<-2> to 1*10<10> Omega / cm, and the standard deviation of the logarithm of the electric resistance is less than 1.0. The thickness of the electroconductive layer is in the range of 0.1 to 5 micrometers, and the amount of the carbon nanotubes may be 0.1 to 50 parts by mass based on 100 parts by mass of the synthetic fiber. The electroconductive fiber may contain a binder. The electroconductive fiber may be produced by immersing the synthetic fibers in a dispersion while applying vibration to the synthetic fibers to deposit an electroconductive layer on the surface of the synthetic fibers. In the electroconductive fiber, the carbon nanotubes are deposited evenly and strongly onto substantially the whole area of the surface of the fibers, and, thus, the electroconductive fiber is electroconductive and flexible.

Description

technical field [0001] The present invention relates to conductive fibers to which carbon nanotubes are attached, conductive yarns and fiber structures (fabrics) containing the conductive fibers, and methods for their production. More specifically, the present invention relates to a conductive fiber, a conductive yarn, a conductive fiber structure, and a manufacturing method thereof, in which nanometer (nm)-sized carbon nanotubes are uniformly and firmly attached to the surface of the fiber. Background technique [0002] Synthetic fibers such as polyester fibers, polyamide fibers, polyolefin fibers, or acrylic fibers have properties such as excellent mechanical properties, chemical resistance, weather resistance, and ease of handling, so the synthetic fibers are widely used in many applications, including Clothing, bedding, interior decoration fiber products, industrial materials, and medical materials. [0003] However, products using synthetic fibers tend to generate stat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06M11/74D01F8/14
CPCD06M2200/00D06M10/06D06M11/74D06M10/02Y10T428/292
Inventor 古月文志秋庭英治蜂矢雅明
Owner HOKKAIDO UNIVERSITY
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