Weak impregnated prepreg of carbon-containing nanotube and preparation method thereof

A technology of carbon nanotubes and nanotubes, which is applied in the field of weakly impregnated prepregs containing carbon nanotubes and its preparation, can solve the problems of low actual content between layers and the inability to flexibly control the content of carbon nanotubes, and achieve easy preparation and increase Content, the effect of increasing the volume fraction

Active Publication Date: 2019-06-28
NAT UNIV OF DEFENSE TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

After the composite material prepared by this kind of prepreg is cured, the carbon nanotubes are distributed along the fiber layer, and the actual content between the layers is less. Nanotube content

Method used

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  • Weak impregnated prepreg of carbon-containing nanotube and preparation method thereof
  • Weak impregnated prepreg of carbon-containing nanotube and preparation method thereof
  • Weak impregnated prepreg of carbon-containing nanotube and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] A weakly impregnated prepreg containing carbon nanotubes in this embodiment includes a fiber fabric and a resin film base, carbon nanotubes are distributed in the resin film base, the fiber fabric is covered on the resin film base, and the bottom of the fiber fabric is The surface part is impregnated with the resin film base. In this embodiment, one layer of resin film base is used, the thickness is 0.3mm, the thickness of fiber fabric is 0.2mm, and the thickness of partially impregnated is 0.05mm.

[0041] figure 1 It is a schematic diagram of the hindering effect of the fiber fabric on the interlayer of carbon nanotubes in the present invention. From figure 1 It can be seen that the dense fiber fabric has an obvious hindering effect on the interlayer carbon nanotubes, making a large number of carbon nanotubes stay in the interlayer region, thereby effectively increasing the interlayer carbon nanotube volume fraction.

[0042] The schematic diagram of the weakly imp...

Embodiment 2

[0054] The weakly impregnated prepreg containing carbon nanotubes of the present embodiment is basically the same as that of Embodiment 1, the only difference being:

[0055] The number of layers of the used resin film base is 2, and the fiber fabric is a 1K carbon fiber orthogonal plain fabric with a thickness of 0.15 mm.

[0056] The preparation method of the weakly impregnated prepreg containing carbon nanotubes of this embodiment is basically the same as that of Example 1, the only difference being:

[0057] In step d), two resin films with the same size of 200mm×200mm are cut out, and stacked neatly in sequence, and then stacked with the 11K carbon fiber orthogonal plain weave fabric.

[0058] In step e), the pressure applied to the plate is 10kPa, and the holding time is 2 minutes.

[0059] The weakly impregnated prepreg containing carbon nanotubes of the present embodiment, such as Figure 6 As shown, the surface of the weakly impregnated prepreg is flat, the thicknes...

Embodiment 3

[0061] The weakly impregnated prepreg containing carbon nanotubes of the present embodiment is basically the same as that of Embodiment 1, the only difference being:

[0062] The number of layers of the resin film substrate used is 3, and the fiber fabric is a 3K carbon fiber orthogonal plain fabric with a thickness of 0.2mm.

[0063] The partially impregnated thickness is 0.07mm.

[0064] The preparation method of the weakly impregnated prepreg containing carbon nanotubes of this embodiment is basically the same as that of Example 1, the only difference being:

[0065] In step d), three resin films with the same size of 200mm×200mm are cut out, and stacked neatly in sequence, and then stacked with 3K carbon fiber orthogonal plain weave fabric.

[0066] In step e), the pressure applied to the plate is 12kPa, and the holding time is 3 minutes.

[0067] The weakly impregnated prepreg containing carbon nanotubes of the present embodiment, such as Figure 7 As shown, the surfac...

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Abstract

The invention discloses a preparation method of a weak impregnated prepreg of a carbon-containing nanotube. The preparation method comprises the following steps: preparing a carbon-containing nanotuberesin solution; preparing carbon-containing nanotube resin; and overlaying a fiber fabric and a resin film. The method is simple in implementing step and high in operability, and the prepared weak impregnated prepreg of the carbon-containing nanotube exerts advantages of the carbon nanotube in mechanical, electric and thermal properties effectively, so that the shortcoming of the resin in mechanical, electric and thermal properties are supplemented. The prepreg has very high application value in interlaminated toughening and functional modification of a resin-based composite material.

Description

technical field [0001] The invention relates to the field of preparation of carbon nanotube-reinforced resin-based composite materials, in particular to a weakly impregnated prepreg containing carbon nanotubes and a preparation method thereof. Background technique [0002] Due to the ultra-high specific strength, specific modulus and high electrical conductivity of carbon nanotubes, the advantages of high thermal conductivity just make up for the poor mechanical properties, low electrical conductivity, low thermal conductivity, and large thermal expansion coefficient of resin-based composite materials. Plates are therefore widely used in the field of resin matrix composite reinforcement. [0003] A common method for preparing carbon nanotubes / composite material prepregs is to blend carbon nanotubes into resin to prepare a blended glue solution, impregnate fibers with glue, and then press-coat to prepare composite material prepregs. However, this method has obvious disadvant...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J5/24C08K3/04C08L63/00C08L67/06C08L79/08
Inventor 贺雍律江大志张鉴炜鞠苏刘钧尹昌平
Owner NAT UNIV OF DEFENSE TECH
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