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Preparation method of graphene oxide resin carbon fiber composite material

A technology of fiber composite materials and graphene, which is applied in the field of preparation of graphene oxide resin carbon fiber composite materials, can solve the problems of low curing strength of resin glue and carbon fiber, affecting the service life of synchronizers, internal cracks, etc., and achieve the improvement of comprehensive mechanical properties indicators, improving overall performance and service life, and overcoming cracks and air bubbles

Inactive Publication Date: 2018-10-09
陕西省机械研究院有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to raw materials and curing process factors, the curing strength of resin glue and carbon fiber is often low, and defects such as internal cracks and air bubbles are easily formed during the curing process, causing the resin carbon fiber layer of the synchronizer cone ring to fall off or wear early during use, directly affecting the synchronizer. service life

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] 1) Preparation of graphene oxide

[0022] Using natural graphite powder (-30 μm) as a raw material to prepare graphene oxide by the Hummers method, and then place the prepared graphene oxide in a vacuum oven at 60°C to fully dry;

[0023] 2) Graphene oxide modification

[0024] The graphene oxide prepared in step 1) is placed in a solvent so that the solvent can submerge the graphene oxide, stirred for 36 hours, finally precipitated, filtered, fully washed with dichloroethylene, and vacuum-dried to obtain modified graphene oxide;

[0025] Described solvent is that the mass ratio of N-dimethylformamide and aromatic monoisocyanate is 40:1;

[0026] 3) Preparation of acetone dispersion

[0027] According to the weight percentage of 0.15:1000, the modified graphene oxide was weighed and placed in an acetone solution, and ultrasonically dispersed for 2 hours to obtain a uniformly dispersed modified graphene oxide acetone dispersion;

[0028] 4) Preparation of graphene oxi...

Embodiment 2

[0034] 1) Preparation of graphene oxide

[0035] Using natural graphite powder (-30 μm) as a raw material to prepare graphene oxide by the Hummers method, and then place the prepared graphene oxide in a vacuum oven at 60°C to fully dry;

[0036] 2) Graphene oxide modification

[0037] The graphene oxide prepared in step 1) is placed in a solvent so that the solvent can submerge the graphene oxide, stirred for 36 hours, finally precipitated, filtered, fully washed with dichloroethylene, and vacuum-dried to obtain modified graphene oxide;

[0038] Described solvent is that the mass ratio of N-dimethylformamide and aromatic diisocyanate is 40:1;

[0039] 3) Preparation of acetone dispersion

[0040] According to the weight percentage of 0.20:1000, the modified graphene oxide was weighed and placed in an acetone solution, and ultrasonically dispersed for 3 hours to obtain a uniformly dispersed modified graphene oxide acetone dispersion;

[0041] 4) Preparation of graphene oxide...

Embodiment 3

[0047] 1) Preparation of graphene oxide

[0048] Using natural graphite powder (-30 μm) as a raw material to prepare graphene oxide by the Hummers method, and then place the prepared graphene oxide in a vacuum oven at 60°C to fully dry;

[0049] 2) Graphene oxide modification

[0050] The graphene oxide prepared in step 1) is placed in a solvent so that the solvent can submerge the graphene oxide, stirred for 36 hours, finally precipitated, filtered, fully washed with dichloroethylene, and vacuum-dried to obtain modified graphene oxide;

[0051] Described solvent is that the mass ratio of N-dimethylformamide and aromatic polyisocyanate is 40:1;

[0052] 3) Preparation of acetone dispersion

[0053] According to the weight percentage of 0.25:1000, the modified graphene oxide was weighed and placed in an acetone solution, and ultrasonically dispersed for 4 hours to obtain a uniformly dispersed modified graphene oxide acetone dispersion;

[0054] 4) Preparation of graphene oxi...

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Abstract

The invention relates to a preparation method of a graphene oxide resin carbon fiber composite material, which is applied to preparation of a heavy truck speed changer synchronizer taper ring conicalsurface friction layer FB resin carbon fiber composite material. The preparation method comprises the following steps: preparing graphene oxide from natural graphite according to a Hummers method, performing modification treatment by using N-dimethylformamide, isocyanate or derivatives thereof, and performing ultrasonic dispersion on an acetone solution and the modified graphene oxide to obtain uniformly dispersed modified graphene oxide acetone dispersing liquid; performing configuration and homogenization treatment on the dispersing liquid and FB resin adhesive, coating double sides of carbon fiber cloth with the resin adhesive containing the modified graphene uniformly, and performing solidification treatment to obtain the graphene oxide resin carbon fiber composite material. Accordingto the carbon fiber composite material prepared according to the method and under the condition of room temperature, the interlaminar shear strength is greater than 55 MPa, the tensile strength is greater than 800 MPa and the wear resistance (a friction testing machine) is less than 0.025 g / cm<2>. The production process is simple in route; the graphene oxide resin carbon fiber composite material has stable and reliable performance and is suitable for batch production.

Description

technical field [0001] The invention relates to a method for preparing a carbon fiber composite material, in particular to a method for preparing a graphene oxide resin carbon fiber composite material. Background technique [0002] In the synchronizer mechanism of heavy-duty automobile transmission, the synchronizer cone ring bonded with resin carbon fiber is the core key part. The resin carbon fiber layer is a composite material formed by infiltration and curing of FB resin glue and carbon fiber cloth. During the working process of the synchronizer, the resin The carbon fiber layer has the advantages of stable friction performance, high friction coefficient, high temperature resistance, wear resistance, oil-containing heat dissipation, anti-lock braking, and long service life. Due to raw materials and curing process factors, the curing strength of resin glue and carbon fiber is often low, and defects such as internal cracks and air bubbles are easily formed during the curin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L61/06C08K7/06C08K9/04C08K3/04
CPCC08K3/042C08K7/06C08K9/04C08L61/06
Inventor 林育阳陆千夏王娟梅赵志清左鹏军杨聪斌
Owner 陕西省机械研究院有限公司
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