Carbon nanotube/carbon fiber composite material as well as preparation method and application thereof

A technology of carbon nanotubes and composite materials, which is applied in the field of carbon nanotube/carbon fiber composite materials and their preparation, can solve problems such as limitations, debonding between layers, and weak ability to resist loads in the thickness direction, so as to improve lightning protection effects and enhance Interfacial bonding strength and the effect of improving electrical conductivity

Active Publication Date: 2020-09-22
THE NAT CENT FOR NANOSCI & TECH NCNST OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

2. The ability of carbon fiber / epoxy composite laminates to resist thickness-direction loads is still weak, and "delamination" is prone to occur, that is, debonding or cracking between layers, which makes the application of this high-performance composite material in the engineering field subject to severely restricted
When the invention uses a certain thickness of the insulating, heat-conducting and ablation-resistant adhesive to paste the conductive film on the surface of the continuous carbon fiber laminated composite material part, it can prevent the conduction of current to the continuous carbon fiber laminated composite material part, and improve the lightning protection of the conductive film. effect, but the process is too complicated, and the interlayer fracture toughness is poor

Method used

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  • Carbon nanotube/carbon fiber composite material as well as preparation method and application thereof
  • Carbon nanotube/carbon fiber composite material as well as preparation method and application thereof
  • Carbon nanotube/carbon fiber composite material as well as preparation method and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0054] This embodiment provides a carbon nanotube / carbon fiber composite material. The carbon nanotube / carbon fiber composite material includes from top to bottom: a carbon nanotube super-aligned film layer, a glass fiber prepreg layer, and a carbon nanotube-containing layer. Array of carbon fiber prepreg layers. The carbon nanotube super-parallel film layer includes a layer of carbon nanotube super-parallel film layer, the carbon nanotube super-parallel film layer is composed of 1000 layers of carbon nanotubes, and the thickness is 10 μm; the glass fiber prepreg The layer includes 3 layers of glass fiber prepreg, and the thickness of each layer of glass fiber prepreg is 100 μm; the carbon fiber prepreg layer containing carbon nanotube arrays includes 30 layers of carbon fiber prepreg layers containing carbon nanotube arrays.

[0055] The preparation method of the carbon nanotube / carbon fiber composite material described in this embodiment comprises the following steps:

[00...

Embodiment 2

[0060] This embodiment provides a carbon nanotube / carbon fiber composite material. The only difference from Example 1 is that the carbon nanotube super-aligned film layer is composed of 100 layers of carbon nanotubes, and the carbon nanotube super-aligned The thickness of the film layer is 1 μm.

[0061] Carry out 100kA lightning impact test to the carbon nanotube / carbon fiber composite material prepared in this embodiment, and adopt ultrasonic wave to evaluate composite material damage, Figure 4 The carbon nanotube / carbon fiber composite material prepared for embodiment 2 is subjected to the appearance topography figure after lightning strike, Figure 5 The carbon nanotube / carbon fiber composite material prepared for embodiment 2 is through the non-destructive testing surface map after lightning strike, Image 6 Cross-sectional view of non-destructive testing of the carbon nanotube / carbon fiber composite material prepared in Example 2 after being struck by lightning. Depen...

Embodiment 3

[0063] This embodiment provides a carbon nanotube / carbon fiber composite material. The only difference from Example 1 is that the carbon nanotube super-aligned film layer is composed of 500 layers of carbon nanotubes, and the carbon nanotube super-aligned The thickness of the film layer was 5 μm.

[0064] Carry out 100kA lightning impact test to the carbon nanotube / carbon fiber composite material prepared in this embodiment, and adopt ultrasonic wave to evaluate composite material damage, Figure 7 The carbon nanotube / carbon fiber composite material prepared in Example 3 is subjected to the appearance topography figure after lightning strike, Figure 8 The carbon nanotube / carbon fiber composite material prepared for embodiment 3 is subjected to non-destructive testing surface diagram after lightning strike, Figure 9 It is a cross-sectional view of non-destructive testing of the carbon nanotube / carbon fiber composite material prepared in Example 3 after being struck by lightn...

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Abstract

The invention provides a carbon nanotube/carbon fiber composite material as well as a preparation method and application thereof. The carbon nanotube/carbon fiber composite material sequentially comprises a carbon nanotube supersequential thin film layer, an insulating protective layer and a carbon fiber prepreg layer containing a carbon nanotube array from top to bottom. The carbon nanotube/carbon fiber composite material disclosed by the invention has excellent interlayer fracture toughness and high surface conductivity, and the carbon nanotube and the carbon fiber composite material are high in binding power, so that the lightning protection effect of the composite material can be effectively improved.

Description

technical field [0001] The invention belongs to the technical field of composite material lightning protection, and in particular relates to a carbon nanotube / carbon fiber composite material and a preparation method and application thereof. Background technique [0002] At present, international mainstream large passenger aircraft use carbon fiber composite materials as their main structure in large quantities, so as to reduce the weight of the aircraft, reduce fuel consumption and save costs. According to related reports, the latest aircraft carbon fiber composite materials use more than 50%. While a large number of applications of carbon fiber composite materials have greatly improved the performance of aircraft, there are also some problems: [0003] 1. There is a big gap in the conductivity of composite materials compared with metals, and they are quite sensitive to lightning, and the loss is greater after being struck by lightning. Statistics show that an aircraft on ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C70/16B29C70/34
CPCB29C70/16B29C70/345
Inventor 高锋张晖张忠
Owner THE NAT CENT FOR NANOSCI & TECH NCNST OF CHINA
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