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Carbon nanotube fibrous composite material and preparation method thereof

A carbon nanotube fiber and composite material technology, applied in the direction of nanotechnology, nanotechnology, chemical instruments and methods, etc., can solve the problem of not preparing carbon nanotube fiber composite materials, difficult single-layer film deep compounding, and mutual interaction Low-level problems, to achieve the effect of obvious interspersed effect, easy molding, and strong interlayer effect

Active Publication Date: 2018-10-16
SUZHOU INST OF NANO TECH & NANO BIONICS CHINESE ACEDEMY OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The array method uses carbon nanotube film as the basic material, which can regulate the content of carbon nanotubes in the composite material, and can also obtain a carbon nanotube array film composite material with high carbon nanotube content, which has good mechanical and electrical properties, but Although the carbon nanotube array film is also formed by stacking layers, the thickness of the single-layer film is too small (nanoscale), and the preparation efficiency is low.
[0010] The floating method uses carbon nanotube film as the basic material. Although it can be prepared in a large area, the carbon nanotube film prepared by it is generally compounded after the film is formed. Due to the strong interaction between the carbon tubes after forming, it is not easy The films are deeply compounded, and the interaction between the layers is also low during multi-layer compounding, and the interlayer effect is poor.
[0011] Fiber composite materials are an important part of composite materials, and carbon nanotube fiber composite materials have always been considered as one of the important potential application directions of carbon nanotubes in the future. However, due to the limitations of the output and preparation methods of carbon nanotube fibers, so There has been no relevant content on the preparation of carbon nanotube fiber composites in the existing reports

Method used

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  • Carbon nanotube fibrous composite material and preparation method thereof
  • Carbon nanotube fibrous composite material and preparation method thereof
  • Carbon nanotube fibrous composite material and preparation method thereof

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preparation example Construction

[0033] An aspect of the embodiments of the present invention provides a method for preparing a carbon nanotube fiber composite material, which includes:

[0034] Provide one-dimensional carbon nanotube fibers;

[0035] A layer-by-layer winding method is adopted, and a reinforcement is added during the layer-by-layer winding process, so that the carbon nanotube fibers are stacked and arranged layer by layer to form a carbon nanotube fiber composite material prepreg with a layered composite structure;

[0036] The carbon nanotube fiber composite material prepreg is molded to obtain the carbon nanotube fiber composite material.

[0037] In some typical implementation cases, the carbon nanotube fibers exist in the form of one-dimensional fibers, which can be any one or a combination of two or more of twisted fibers, untwisted fibers, and flat filaments, But not limited to this.

[0038] More preferably, the carbon nanotube fiber is a flat filament, because the flat filament can ...

Embodiment 1

[0083]Take a shaft of carbon nanotube fiber flat filament, the length is about 100 meters, the width is about 200 μm, the thickness is 10 μm, and the tensile breaking load is about 1N. First place the carbon nanotube fiber shaft on the pay-off shaft, draw the carbon nanotube fiber and make it pass through the yarn guide shaft, the number of the yarn guide shaft can be selected according to the tension of the yarn (ie carbon nanotube fiber), and then the carbon nanotube fiber The fiber is wound on the collection shaft, the winding distance between two adjacent coils is set to 100 μm, the winding angle is 30 degrees, the yarn tension is 500-600mN, the winding width is 10cm, the winding speed is 1m / min, and the winding time is 20min, during the winding process, it is infiltrated with epoxy resin / acetone solution with a mass concentration of 5% to form a composite material prepreg, and then it is removed from the collection shaft, and then hot-pressed at 130°C for 1 hour under a pr...

Embodiment 2

[0085] A shaft of flat carbon nanotube fiber is taken, the length is about 100 meters, the width is about 500 μm, the thickness is about 10 μm, and the tensile breaking load is about 3N. First place the carbon nanotube fiber shaft on the pay-off shaft, lead out the fiber to pass through the yarn guide shaft, the number of yarn guide shafts can be selected according to the yarn tension, and then place the yarn on the collection shaft, between two adjacent coils The winding distance is set to 250 μm, the winding angle is 85 degrees, the yarn tension is 1-1.2N, the winding width is 10cm, the winding speed is 2m / min, the winding time is 50min, and the mass concentration is 5 during the winding process. % epoxy resin / acetone solution infiltration to form a composite material prepreg, then removed from the collection shaft, and then hot pressed at 130° C. for 1 hour under a pressure of 7 MPa to form a carbon nanotube fiber composite material. The carbon nanotube fiber composite mate...

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Abstract

The invention discloses a carbon nanotube fibrous composite material and a preparation method thereof. The preparation method comprises the following steps: providing one-dimensional carbon nanotube fibers; by a method of layer-by-layer winding, stacking and the like, and adding reinforcing bodies, enabling the carbon nanotube fibers to be in stacked arrangement layer by layer so as to form a carbon nanotube fibrous composite material prepreg body with a layered composite structure; and performing forming treatment on the carbon nanotube fibrous composite material prepreg body, thereby obtaining the carbon nanotube fibrous composite material. The preparation method has the beneficial effects that an interlayer arrangement mode is adjusted and controlled by adjusting and controlling the adopted arrangement parameters of the carbon nanotube fibers, interpenetration of the carbon nanotube fibers in a plurality of layers is realized, and the obtained carbon nanotube fibrous composite material has the advantages of strong interlayer action, convenience for forming, convenience for dimension design, high preparation efficiency and the like, can exert the advantage of the mechanical properties of the carbon nanotube fibers and also can maintain the electric and thermal properties of the carbon nanotube fibers.

Description

technical field [0001] The invention relates to a carbon nanotube fiber composite material, in particular to a carbon nanotube fiber composite material and a preparation method thereof, belonging to the technical field of nanocomposite materials. Background technique [0002] Carbon nanotubes are the lightest and highest strength multifunctional one-dimensional linear materials with mechanical, electrical and thermal properties found so far. The tensile strength is 50-200GPa, and the theoretical value of electrical conductivity reaches 108s / m. The fluid transport ability is 1000 times that of copper, so it has been considered as an ideal composite material reinforcement. At present, the existing forms of carbon nanotube composite materials mainly include the following types: [0003] 1) Carbon nanotube powder reinforced material, mainly by mixing carbon nanotube powder directly as a reinforcement with polymer or other materials to prepare carbon nanotube composite materials...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B9/00B32B9/04B32B38/08B82Y30/00
CPCB32B5/02B32B5/26B32B38/08B32B2260/023B32B2260/046B32B2262/106B82Y30/00
Inventor 赵静娜张骁骅李清文
Owner SUZHOU INST OF NANO TECH & NANO BIONICS CHINESE ACEDEMY OF SCI
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