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A kind of preparation method of toughening and drag-reducing carbon fiber composite material

A technology of composite materials and carbon fibers, which is applied in the field of preparation of carbon fiber composite materials toughened by nano-hybrid fiber membranes, can solve the problems of insufficient intrinsic brittle electrical conductivity, achieve good electron conduction rate, improve damage resistance, reduce The effect of filler dosage

Active Publication Date: 2019-07-12
SOUTHWEST PETROLEUM UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Another purpose of the present invention is to solve the problem of intrinsic brittleness existing in existing carbon fiber composite materials and the problem of insufficient electrical conductivity when carbon fiber composite materials are applied in the aviation field

Method used

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  • A kind of preparation method of toughening and drag-reducing carbon fiber composite material
  • A kind of preparation method of toughening and drag-reducing carbon fiber composite material
  • A kind of preparation method of toughening and drag-reducing carbon fiber composite material

Examples

Experimental program
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Effect test

Embodiment 1

[0041] Weigh 0.09g of graphene microflakes, disperse them in N,N-dimethylformamide, ultrasonicate for 1h, and the ultrasonic power is 200W, to obtain a uniform and stable graphene suspension; weigh 0.54g of carbon nanotube dispersant Dissolve in N,N-dimethylformamide, then add 0.9g carbon nanotube (CNT) to make carbon nanotube suspension, stir ultrasonically, ultrasonic power 100~500W, ultrasonic dispersion time 1~3h, until it is in the container No black particle precipitation can be observed at the bottom stirrer; the graphene suspension and the carbon nanotube suspension are mixed evenly under ultrasonic and mechanical stirring, the ultrasonic power is 300w, and the ultrasonic stirring time is 1h to obtain a composite filler suspension. Standing at room temperature for a week did not cause delamination. 9g of nylon 12 (PA12) powder was dissolved in N,N-dimethylformamide solvent, and the composite filler suspension was uniformly mixed with the homogeneously dissolved nylon 1...

Embodiment 2

[0043] Weigh 0.09g of graphene microflakes, disperse them in N,N-dimethylformamide, ultrasonicate for 1h, and the ultrasonic power is 200W, to obtain a uniform and stable graphene suspension; weigh 0.54g of carbon nanotube dispersant Dissolve in N,N-dimethylformamide, then add 0.9g carbon nanotube (CNT) to make carbon nanotube suspension, stir ultrasonically, ultrasonic power 100~500W, ultrasonic dispersion time 1~3h, until it is in the container No black particle precipitation can be observed at the bottom stirrer; the graphene suspension and the carbon nanotube suspension are mixed evenly under ultrasonic and mechanical stirring, the ultrasonic power is 300w, and the ultrasonic stirring time is 1h to obtain a composite filler suspension. Standing at room temperature for a week did not cause delamination. Dissolve 9g of thermoplastic polyurethane (TPU) powder in N,N-dimethylformamide solvent, mix the composite filler suspension with the homogeneously dissolved thermoplastic p...

Embodiment 3

[0045] Weigh 0.09g of graphene microflakes, disperse them in a mixed solvent of N,N-dimethylformamide and tetrahydrofuran, ultrasonicate for 1h, and the ultrasonic power is 200W, to obtain a uniform and stable graphene suspension; weigh 0.54g of carbon The nanotube dispersant is pre-dissolved in a mixed solvent of N,N-dimethylformamide and tetrahydrofuran, and then 0.9g of carbon nanotubes (CNT) is added to form a carbon nanotube suspension, stirred ultrasonically, and the ultrasonic power is 100-500W. Ultrasonic dispersion time is 1 to 3 hours, until no black particle precipitation is observed at the stirring bar at the bottom of the container; the graphene suspension and carbon nanotube suspension are mixed evenly under ultrasonic and mechanical stirring, the ultrasonic power is 300w, and the ultrasonic stirring time is 1h , to obtain a composite filler suspension, the suspension was left standing at room temperature for a week without delamination. Dissolve 9g of thermoplas...

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Abstract

The invention discloses a preparation method of a toughening resistance-reduction carbon-fiber composite material. The method comprises the following steps: preparing a graphene-carbon nanotube composite filling material fluid suspension, uniformly mixing the composite filling material fluid suspension and thermoplastic polyurethane or a nylon solution to obtain a spinning solution, then employinga static spinning method for spinning nano-level fiber, coating the surface of the carbon fabric with the fiber to form a layer of thin fiber film, and employing a vacuum auxiliary moulding technology to prepare a carbon-fibre composite laminated board. The fiber film is dissolved during an epoxy resin curing process to form a second phase toughening phase, and the graphene-carbon nanotube composite filling material is dispersed to three-dimensional conductive network structure when the fiber film is dissolved. Under specific proportion of graphen and the carbon nanotube, the generated cooperative effect can reduce the seepage threshold of a system. The method has simple process, improves the mechanical properties and conductivity of the carbon-fiber composite material, and can be used for industrial production of the high performance carbon-fiber composite material.

Description

technical field [0001] The invention belongs to the field of carbon fiber composite materials, and in particular relates to a preparation method of a carbon fiber composite material toughened and reduced in resistance by using a nano-hybrid fiber film. Background technique [0002] Due to its high specific strength, specific modulus, excellent fatigue strength and structural dimensional stability, corrosion resistance, overall design and manufacturing and other advantages, carbon fiber composite materials replace traditional metal materials in aerospace and automotive lightweight technology, sports and other fields develop rapidly. Especially in the increasing use of aircraft, compared with traditional metal materials, it can reduce fuel consumption during flight and increase cruising speed. However, due to the limitation of intrinsic brittleness of the thermosetting resin matrix of carbon fiber reinforced resin matrix composites, how to improve its damage resistance and da...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L63/00C08L77/06C08L75/04C08K7/24C08K3/04C08K7/06B29C70/48
CPCB29C70/48C08K2201/001C08K2201/003C08K2201/011C08L63/00C08L77/06C08K7/24C08K3/04C08K7/06C08L75/04
Inventor 向东李维李云涛
Owner SOUTHWEST PETROLEUM UNIV
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