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Fiber reinforced composite as well as preparing method and application thereof

A composite material and fiber-reinforced technology, which is applied in the field of fiber-reinforced composite materials and carbon fiber-reinforced composite materials, can solve problems affecting the mechanical properties of composite material parts, complex and difficult operations, and dispersion of carbon nanotubes, and achieve excellent electrical conductivity and heat generation. Wide application prospects and the effect of improving electrical and thermal conductivity

Active Publication Date: 2017-05-17
SUZHOU INST OF NANO TECH & NANO BIONICS CHINESE ACEDEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this method needs to solve the dispersion problem of carbon nanotubes. The dispersion problem not only affects the electrothermal characteristics, but also affects the mechanical properties of composite parts.
In addition, in this method, the curing process of the composite material is extremely sensitive to the content of carbon nanotubes, so the content of carbon nanotubes needs to be precisely regulated, and the operation is extremely complicated and difficult.

Method used

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  • Fiber reinforced composite as well as preparing method and application thereof
  • Fiber reinforced composite as well as preparing method and application thereof
  • Fiber reinforced composite as well as preparing method and application thereof

Examples

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preparation example Construction

[0020] An aspect of the embodiments of the present invention provides a method for preparing a fiber-reinforced composite material, which includes:

[0021] A fiber product is provided, the fiber product comprises a fiber fabric and a resin compounded with the fiber fabric, and the resin includes a thermosetting resin and / or a thermoplastic resin;

[0022] Laminating at least one fiber product and at least one carbon nanotube film to form a composite material preform;

[0023] Putting the composite material preform into a vacuum forming device, then evacuating, and then passing an electric current to at least one carbon nanotube film in the composite material preform, causing the at least one carbon nanotube film to generate heat, so that the The composite material preform is heated and cured to form the fiber reinforced composite material.

[0024] Further, the carbon nanotube film includes a carbon nanotube film prepared by chemical vapor deposition or physical method. Whe...

Embodiment 1

[0061] Embodiment 1: A method for preparing a fiber-reinforced resin composite material involved in this embodiment specifically includes the following steps:

[0062] 1) Select T700, 12K carbon fiber epoxy resin unidirectional prepreg (purchased from Yixing Hengya Carbon Fiber Technology Co., Ltd., epoxy resin content is 60%) and cut it into 5cm×4cm, in which the carbon fiber is along the 5cm long side direction.

[0063] 2) Use floating catalytic chemical vapor deposition carbon nanotube film (purchased from Jiedi Nano Technology Co., Ltd., use ethanol to shrink and densify, with a thickness of 3-8 μm, and the electrothermal performance of pure carbon nanotube film can be referred to figure 2 ), cut into 5cm×4cm, wherein, the orientation direction of the carbon nanotube film is along the direction of the 5cm long side. Cut a 5mm wide copper foil as an electrode, paste and fix it on both ends of the carbon nanotube film with conductive silver glue, perpendicular to the orien...

Embodiment 2

[0066] Embodiment 2: A method for preparing a fiber-reinforced resin composite material involved in this embodiment specifically includes the following steps:

[0067] 1) Use T700, 12K unidirectional carbon fiber prepreg fabric (purchased from Yixing Hengya Carbon Fiber Technology Co., Ltd., with an epoxy resin content of 60%) and cut it into 5cm×5cm.

[0068] 2) Choose a floating catalytic chemical vapor deposition carbon nanotube film (purchased from Jiedi Nano Technology Co., Ltd., use ethanol to shrink and densify, with a thickness of 3-8 μm), and perform laser etching treatment on it. The processing method is: carbon nanotubes The tube film is spread on the stage, and the laser is adjusted to focus on the surface of the carbon nanotube film to form a point. The focused laser can etch a circular perforation on the carbon nanotube film. The laser intensity is controlled by adjusting the current. Control, the diameter of the circular holes is 150 μm, the minimum distance bet...

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Abstract

The invention discloses a fiber reinforced composite as well as a preparing method and an application thereof. The preparing method comprises: providing a fiber product, wherein the fiber product comprises fiber fabric and resin combined with the fiber fabric, and the resin comprises thermosetting and / or thermoplastic resin; arranging at least one fiber product and at least one carbon nanotube film layer in an overlapping manner so as to from a composite premix; and placing the composite premix in a vacuum molding device, then pumping vacuum, charging the at least one carbon nanotube film in the composite premix with current, enabling the at least one carbon nanotube film in the composite premix to produce heat, and accordingly heating and curing the composite premix so as to form the fiber reinforced composite. By the technology of the invention, energy consumption in the preparing process of the fiber reinforced composite can be effectively reduced, the energy converting efficiency is increased, and the molding cycle is shortened; and at the same time, the fiber reinforced composite has great electricity and heat conducting properties and wide application prospects.

Description

technical field [0001] The invention relates to a fiber-reinforced composite material, in particular to a carbon fiber-reinforced composite material, its preparation method and application, and belongs to the field of material science. Background technique [0002] Fiber-reinforced composite materials have the advantages of low density, high specific strength / specific stiffness, corrosion resistance, designable performance, integrated molding, and good fatigue resistance. They are widely used as structural materials and anti-ablation materials. Aerospace, energy, automobiles, sports and fitness equipment and other fields have a very wide range of applications. [0003] At present, the most commonly used fiber-reinforced composite material preparation method is to use autoclave molding, that is, to cut the fiber resin prepreg into a certain size, and lay layers in a certain way to prepare a composite material prefabricated body, and then prefabricate the composite material T...

Claims

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Application Information

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IPC IPC(8): B29C70/44
CPCB29C70/443
Inventor 吕卫帮徐小魁曲抒旋巩文斌李清文
Owner SUZHOU INST OF NANO TECH & NANO BIONICS CHINESE ACEDEMY OF SCI
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