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Hybridized film modified carbon fiber composite material and preparation method thereof

A composite material and composite material layer technology, applied in the field of high-performance carbon fiber composite materials, can solve problems such as poor toughness and electrical conductivity, and achieve the effects of increasing interlaminar fracture toughness, reducing costs, and making costs reasonable.

Active Publication Date: 2019-08-30
SOUTHWEST PETROLEUM UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] One purpose of the present invention is to provide a carbon fiber composite material modified by hybrid film to increase toughness and reduce resistance in view of the current situation of poor toughness and electrical conductivity of carbon fiber composite materials

Method used

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  • Hybridized film modified carbon fiber composite material and preparation method thereof
  • Hybridized film modified carbon fiber composite material and preparation method thereof
  • Hybridized film modified carbon fiber composite material and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0024] A preparation method of a hybrid film modified carbon fiber composite material, the steps are as follows:

[0025] S1. Preparation of CNT / AgNP composite filler: the composite weight ratio of CNT and AgNP is 10:1, the amount of silver nitrate is 0.12mM (millimoles), the amount of carbon nanotubes is 1mg, the amount of sodium citrate solution is 10mL, sodium citrate The mass fraction of the aqueous solution is 1 wt%. The average diameter of the carbon nanotubes used is 9.5nm, the average length is 1.5μm, and the specific surface area is 250~300m 2 / g. Specific operation: Put the silver nitrate aqueous solution, carbon nanotubes and sodium citrate aqueous solution in a flask in turn, place the flask in an oil bath and heat it in an oil bath. Stir and react at 120°C for 1 hour until the solution turns gray. Centrifuge (centrifuge) Speed ​​10000rpm), the precipitate obtained is the CNT / AgNP composite filler; the composite filler is stored in absolute ethanol for later use;

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Embodiment 2

[0032] A preparation method of hybrid film modified carbon fiber composite material, the steps are as follows:

[0033] S1. Preparation of CNT / AgNP composite filler: the composite weight ratio of CNT and AgNP is 5:1, the amount of silver nitrate is 0.22mM (millimoles), the amount of carbon nanotubes is 1mg, the amount of sodium citrate solution is 10mL, sodium citrate The mass fraction of the aqueous solution is 1 wt%. The average diameter of the carbon nanotubes used is 9.5nm, the average length is 1.5μm, and the specific surface area is 250~300m 2 / g. Specific operation: Put the silver nitrate aqueous solution, carbon nanotubes and sodium citrate aqueous solution in a flask in turn, place the flask in an oil bath and heat it in an oil bath, stir and react at 110°C for 2 hours, until the solution turns gray, and centrifuge (centrifuge) Rotation speed 10000rpm), the precipitate obtained is the CNT / AgNP composite filler; the composite filler is stored in absolute ethanol for late...

Embodiment 3

[0038] A preparation method of hybrid film modified carbon fiber composite material, the steps are as follows:

[0039] S1. Preparation of CNT / AgNP composite filler: the composite weight ratio of CNT and AgNP is 2:1, the amount of silver nitrate is 0.53mM (millimoles), the amount of carbon nanotubes is 1mg, the amount of sodium citrate aqueous solution is 10mL, sodium citrate The mass fraction of the aqueous solution is 1 wt%. The average diameter of the carbon nanotubes used is 9.5nm, the average length is 1.5μm, and the specific surface area is 250~300m 2 / g. Specific operation: Put the silver nitrate aqueous solution, carbon nanotubes and sodium citrate aqueous solution in a flask in turn, place the flask in an oil bath and heat it in an oil bath, stir and react at 110°C for 2 hours, until the solution turns gray, and centrifuge (centrifuge) Rotation speed 10000rpm), the precipitate obtained is the CNT / AgNP composite filler; the composite filler is stored in absolute ethanol ...

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Abstract

The invention discloses a hybridized film modified carbon fiber composite material. The composite material is a composite material laminated board which is made by inserting a hybridized film into prepreg layers. The hybridized film is a composite packing hybridized polyether sulfone resin film consisting of carbon nanotubes and silver nanoparticles. A preparation method of the carbon fiber composite material comprises the following steps: S1, preparing CNT / AgNP composite packing, namely mixing a silver nitrate solution, carbon nanotubes and a sodium citrate solution, performing oil-bath heating and stirring till the solution is gray, and performing centrifugal separation so as to obtain the composite packing; S2, putting the composite packing and polyether sulfone resin powder into an organic solvent, and performing oil-bath heating and stirring so as to obtain a mixed material liquid; S3, pouring the mixed material liquid into a glass mold, and performing drying in a drying oven so as to obtain the hybridized film; and S4, inserting the hybridized film into the prepreg layers, and performing heating curing, so as to obtain the composite material laminated board. The electric conductivity, the impact damage resistance and the breaking toughness of the carbon fiber composite material disclosed by the invention are remarkably improved.

Description

Technical field [0001] The invention relates to the field of high-performance carbon fiber composite materials, in particular to a method for preparing a carbon nanotube / silver nanoparticle composite filler hybrid polyethersulfone resin membrane toughened and resistance-reducing carbon fiber composite material. Background technique [0002] Carbon fiber composite material is a new generation of emerging materials compounded by carbon fiber and epoxy resin matrix. It has light weight (1 / 3 or less of metal), high strength (equivalent to metal), excellent corrosion resistance, and excellent The advantages of heat resistance, structural dimensional stability, overall design and manufacturing, etc. replace traditional metal materials in aerospace, automotive lightweight technology, sports and other fields. In particular, the amount used in airplanes continues to increase. Compared with traditional metal materials, it can reduce fuel consumption during flight and increase cruising spee...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B27/28B32B27/20B32B27/12B32B9/00B32B9/04B32B7/08B32B27/04B32B27/38B32B33/00B32B38/00B32B37/06B32B37/10B32B37/04C08L81/06C08K3/04C08K3/08C08J5/18
CPCB32B5/02B32B7/08B32B9/045B32B27/12B32B27/20B32B27/286B32B33/00B32B37/04B32B37/06B32B37/10B32B38/00B32B2038/0076B32B2260/021B32B2260/046B32B2262/106B32B2307/202B32B2307/558C08J5/18C08J2381/06C08K3/041C08K2003/0806C08K2201/011
Inventor 向东李维李云涛赵春霞王斌李辉王平
Owner SOUTHWEST PETROLEUM UNIV
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