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Super hybrid carbon nano material modified carbon fiber/epoxy matrix composite material and preparation method thereof

A technology of carbon nanomaterials and composite materials, which is applied in the field of super-hybrid carbon nanomaterials modified carbon fiber/epoxy-based composite materials and its preparation, can solve the problems of poor performance of carbon nanotube reinforcement, poor stress transfer, There are no problems such as graphene/carbon nanotubes, achieving excellent interlayer shear performance, strengthening the matrix resin, and combining firmly

Inactive Publication Date: 2014-02-05
JIAXING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the weak interfacial bonding leads to poor stress transfer between the carbon nanotubes and the polymer matrix, so that the reinforcement effect of the carbon nanotubes cannot be well exerted.
However, there is no report on synergistic modification of carbon fiber reinforced epoxy composites by graphene / carbon nanotubes.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] 1) Disperse graphene in acetone, prepare a graphene acetone solution with a concentration of 0.01g / L, and then use an ultrasonic device with a power of 1000W to ultrasonically treat the graphene acetone solution for 0.5 hours to obtain graphene acetone solution;

[0018] 2) Add carbon nanotubes and epoxy resin to the graphene acetone solution obtained in step 1) so that the concentrations are 20g / L and 200g / L respectively to obtain a mixed solution, and stir the mixed solution with a magnetic stirrer for 30 minutes, then Then use an ultrasonic device with a power of 1000W to carry out ultrasonic treatment on the mixed solution for 0.5 hours;

[0019] 3) Put the ultrasonically treated mixed solution in step 2) into an oven with a temperature of 80 degrees Celsius, bake for 10 hours, and then use a vacuum pump to extract the acetone solvent in the mixed solution until the mixed solution has no bubbles;

[0020] 4) Add a chemically equivalent curing agent to the mixed sol...

Embodiment 2

[0023] 1) Disperse graphene in acetone, prepare a graphene acetone solution with a concentration of 1g / L, and then use an ultrasonic device with a power of 300W to ultrasonically treat the graphene acetone solution for 5 hours to obtain a graphene acetone solution ;

[0024] 2) Add carbon nanotubes and epoxy resin to the graphene acetone solution obtained in step 1) to make the concentrations 19g / L and 200g / L respectively to obtain a mixed solution, and stir the mixed solution with a magnetic stirrer for 5 minutes, then Then use an ultrasonic device with a power of 300W to carry out ultrasonic treatment on the mixed solution for 0.5 hours;

[0025] 3) Put the ultrasonically treated mixed solution in step 2) into an oven with a temperature of 50 degrees Celsius, bake for 48 hours, and then use a vacuum pump to extract the acetone solvent in the mixed solution until the mixed solution has no bubbles;

[0026] 4) Add a stoichiometric curing agent to the mixture in step 3), stir ...

Embodiment 3

[0029] 1) Disperse graphene in acetone, prepare a graphene acetone solution with a concentration of 0.2g / L, and then use an ultrasonic device with a power of 600W to ultrasonically treat the graphene acetone solution for 2 hours to obtain graphene acetone solution;

[0030] 2) Add carbon nanotubes and epoxy resin to the graphene acetone solution obtained in step 1) to make the concentrations respectively 1.0g / L and 200g / L to obtain a mixed solution, and stir the mixed solution with a magnetic stirrer for 20 minutes, Then use an ultrasonic device with a power of 800W to carry out ultrasonic treatment to the mixed solution for 3 hours;

[0031] 3) Put the ultrasonically treated mixed solution in step 2) into an oven with a temperature of 80 degrees Celsius, bake for 30 hours, and then use a vacuum pump to extract the acetone solvent in the mixed solution until the mixed solution has no bubbles;

[0032] 4) Add a chemically equivalent curing agent to the mixed solution in step 3...

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Abstract

The invention relates to a super hybrid carbon nano material modified carbon fiber / epoxy matrix composite material and a preparation method thereof. The composite material an epoxy resin matrix material and an inorganic nano filler which is uniformly dispersed in the epoxy resin matrix material, wherein the composite nano inorganic filler is composed of graphene and carbon nanotubes. The excellent mechanical properties of the graphene and carbon nanotubes and the active functional groups on the surface are utilized to effectively enhance the mechanical properties of the epoxy resin matrix and the interface bonding strength between the matrix and the carbon fibers. The prepared composite material has excellent interlaminar shear property, and the interlaminar shear strength is enhanced from 50 MPa to 68 MPa.

Description

technical field [0001] The invention belongs to the field of preparation of polymer-based composite materials, and in particular relates to a super-hybrid carbon nanometer material modified carbon fiber / epoxy-based composite material and a preparation method thereof. Background technique [0002] Carbon fiber reinforced epoxy-based composite materials have the unique advantages of high specific strength and specific stiffness, strong designability, good fatigue fracture resistance, corrosion resistance, good structural dimensional stability, and easy large-area integral forming. Important materials that cannot be replaced in national defense construction and technological development, such as bulletproof helmets, bulletproof clothing, helicopter wings, early warning aircraft radomes, various high-pressure pressure vessels, civil aircraft candy bars, sporting goods, etc. However, carbon fiber reinforced epoxy resin composites have disadvantages such as easy cracking between l...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B27/04B32B27/12B32B27/18B32B27/38C08L63/00C08K9/04C08K7/00C08K3/04
Inventor 沈小军孟令轩王振安杜赛格吕优
Owner JIAXING UNIV
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