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Carbon nanotube fiber composite covering yarn and preparation method and application thereof

A carbon nanotube fiber and carbon nanotube composite technology, which is applied in the direction of yarn, textiles and papermaking, can solve the problems of affecting the performance of yarn or downstream materials, increasing the complexity of the process, and unfavorable production efficiency, etc., to achieve large-scale continuous production The effect of stable preparation, reduction of energy consumption and improvement of preparation efficiency

Active Publication Date: 2018-10-09
SUZHOU INST OF NANO TECH & NANO BIONICS CHINESE ACEDEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In many applications, the existence of the twist angle is not conducive to the performance of the material, and in many cases will affect the performance of the yarn or downstream materials; at the same time, the introduction of the twisting process increases the complexity of the process, increases energy consumption, and also Not conducive to improving the overall preparation efficiency
[0005] In summary, although the aforementioned prior art has made some progress in the preparation of carbon nanotube composite fibers, there are still some problems in processing and performance.

Method used

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  • Carbon nanotube fiber composite covering yarn and preparation method and application thereof
  • Carbon nanotube fiber composite covering yarn and preparation method and application thereof
  • Carbon nanotube fiber composite covering yarn and preparation method and application thereof

Examples

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preparation example Construction

[0026] One aspect of the embodiments of the present invention provides a method for preparing a carbon nanotube fiber composite core-spun yarn, which includes:

[0027] Provide carbon nanotube water-containing raw yarn and polymer fiber;

[0028] The carbon nanotube fiber composite core-spun yarn is formed by completely covering the surface of the polymer fiber with the carbon nanotube water-containing original yarn by adopting a round hole bundling technology.

[0029] The present invention has no limitation on the diameter and length of the carbon nanotube water-containing raw yarn and the polymer fiber. Moreover, the polymer fiber can be a monofilament or a fiber bundle, and the carbon nanotube water-containing original yarn can be one or more.

[0030] Preferably, the carbon nanotubes contained in the carbon nanotube water-containing raw yarn are fully infiltrated with water, wherein the mass of the water is 70 to 200 times that of the carbon nanotubes.

[0031] The carb...

Embodiment 1

[0063] Example 1: Take an ultra-high molecular weight polyethylene fiber (UHMWPE) with a single diameter of about 10 μm, and a water-containing raw yarn with a single width of about 60 μm and a mass ratio of water to carbon nanotubes of 70:1 to 80:1. At the same time, it passes through the drawing die hole with a diameter of 20 μm. After clustering, the carbon nanotube water-containing raw yarn is wrapped in the outer layer of UHMWPE to form a core-spun yarn. After the yarn is pulled out from the cluster hole, it enters the size tank for sizing treatment. Penetrating agent, softener and PVA solution with a concentration of 1wt%, the temperature of the size tank is 60°C, and then it enters the drying box for drying, the drying temperature is 60°C, and the walking time of the yarn in the drying box is 3 minutes , and finally wound onto a spool to form yarn. The tensile breaking load of the core-spun yarn formed in this embodiment is 480~520mN, and the conductivity is 3.2~3.6×10 ...

Embodiment 2

[0064] Embodiment 2: Take the ultra-high molecular weight polyethylene fiber (UHMWPE) bundle with a fineness of 150D / 72F, a water-containing raw yarn with a single width of about 3 mm, and a water-to-carbon nanotube mass ratio of 100:1 to 120:1, and two At the same time, it passes through the drawing die hole with a diameter of 250 μm. After the clustering, the carbon nanotube water-containing raw yarn is wrapped in the outer layer of UHMWPE to form a core-spun yarn. After the yarn is pulled out from the clustering hole, it enters the size tank for sizing treatment. Penetrating agent, softener and PVA solution with a concentration of 1%. The temperature of the size tank is 60°C, and then it enters the drying oven for drying. The drying temperature is 60°C, and the yarn travels in the oven for 3 minutes. Finally, Winding onto a spool to form yarn. The tensile breaking load of the core-spun yarn formed in this embodiment is about 4.5~5.2N, and the conductivity is 1.0~1.3×10 4 S...

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Abstract

The invention discloses carbon nanotube fiber composite covering yarn and a preparation method and application thereof. The preparation method includes the steps of providing carbon nanotube water-containing raw yarn and polymer fibers; using a round hole bundling technique for completely coating the surfaces of the polymer fibers with the carbon nanotube water-containing raw yarn to form the carbon nanotube fiber composite covering yarn; conducting sizing and drying treatment on the covering yarn after shaping. The carbon nanotube water-containing raw yarn can be prepared by a floating catalytic method. The carbon nanotube fiber composite covering yarn includes the polymer fibers as reinforcing cores and a skin layer completely covering the reinforcing cores, and the skin layer comprisesthe carbon nanotube water-containing raw yarn. A drawing die hole direct bundling method is adopted for bundling the carbon nanotube water-containing raw yarn and the polymer fibers to form the covering yarn, twisting movement is not involved, the preparation method is simple, the preparation efficiency is high and can reach 30 m / min or above, the energy consumption is low, industrial production can be conducted, and continuous and stable large-scale preparation is achieved.

Description

technical field [0001] The invention relates to a carbon nanotube fiber composite core-spun yarn, in particular to a carbon nanotube fiber composite core-spun yarn and its preparation method and application, belonging to the technical field of nanocomposite materials. Background technique [0002] In 2002, Fan Shoushan’s team at Tsinghua University discovered spinnable carbon nanotube arrays, and in 2004, Ray.Baughman’s team at the University of Texas made it into carbon nanotube fibers (see Science, 2004.306(5700), 1358-1361), At the same time, the Alan.windle team of the University of Cambridge in the United Kingdom also obtained carbon nanotube fibers by floating catalysis (see the literature Science, 2004.304 (5668), 276-278), which opened up the era of carbon nanotube fibers. In the following ten years, researchers in the industry conducted a large number of basic performance research on carbon nanotube fibers, covering basic performance research such as mechanics, elec...

Claims

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Application Information

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IPC IPC(8): D02G3/04D02G3/36D02G3/44
CPCD02G3/04D02G3/36D02G3/44D02G3/441D10B2101/122D10B2331/04D10B2401/063D10B2401/16
Inventor 赵静娜李清文
Owner SUZHOU INST OF NANO TECH & NANO BIONICS CHINESE ACEDEMY OF SCI
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