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Preparation method of graphene interface modified carbon fiber/epoxy resin composite

A technology of epoxy resin and composite materials, which is applied in the field of chemistry and chemical engineering, can solve problems in the initial stage and achieve the effects of easy operation, simple improvement process, and improved interface load transfer capability

Inactive Publication Date: 2019-11-01
XIAN AERONAUTICAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the research on the use of graphene for interfacial modification of carbon fiber / epoxy resin composites is still in its infancy.

Method used

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  • Preparation method of graphene interface modified carbon fiber/epoxy resin composite
  • Preparation method of graphene interface modified carbon fiber/epoxy resin composite
  • Preparation method of graphene interface modified carbon fiber/epoxy resin composite

Examples

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Effect test

Embodiment 1

[0027] The present embodiment provides a kind of method of graphene interface modification carbon fiber / epoxy resin composite material, comprises the following steps:

[0028] S1. Preparation of graphene slurry: fully disperse 0.05g of graphene into 50g of absolute ethanol, and then disperse by ultrasonic for 4h to obtain a graphene slurry with a mass fraction of 0.1%.

[0029] S2. Interface modification: Cut the carbon fiber cloth into a size of 15cm*10cm, then completely soak it in the graphene slurry obtained in S1, and dry it at 80°C for 4 hours after 30 minutes;

[0030] S3, preparation of epoxy resin mixture: take 50g epoxy resin, 20g curing agent and 0.15g defoamer, first adopt the mode of mechanical stirring to mix the three for 40min, then ultrasonic 10min to remove air bubbles, and further mix uniformly to obtain mixture;

[0031] S4. Lamination: Immerse the carbon fiber cloth modified by the interface of S2 in the mixture obtained in S3 for 6 minutes, place the ful...

Embodiment 2

[0034] The present embodiment provides a kind of method of graphene interface modification carbon fiber / epoxy resin composite material, comprises the following steps:

[0035] S1. Preparation of graphene slurry: fully disperse 0.15g of graphene into 50g of absolute ethanol, and then disperse by ultrasonic for 5h to obtain a graphene slurry with a mass fraction of 0.3%;

[0036] S2. Interface modification: Cut the carbon fiber cloth into a size of 15cm*10cm, then completely soak it in the graphene slurry obtained in S1, and dry it at 50°C for 5h after 30min;

[0037] S3, preparation of epoxy resin mixture: take 50g epoxy resin, 15g curing agent and 0.10g defoamer, first adopt the mode of mechanical stirring to mix the three for 30min, then ultrasonic 20min to remove air bubbles, and further mix evenly to obtain mixture;

[0038] S4. Lamination: Immerse the carbon fiber cloth modified by the interface of S2 in the mixture obtained in S3 for 7 minutes, place the fully impregnate...

Embodiment 3

[0041] The present embodiment provides a kind of method of graphene interface modification carbon fiber / epoxy resin composite material, comprises the following steps:

[0042] S1. Preparation of graphene slurry: fully disperse 0.3g of graphene into 50g of absolute ethanol, and then disperse by ultrasonic for 6h to obtain a graphene slurry with a mass fraction of 0.6%;

[0043] S2. Interface modification: Cut the carbon fiber cloth into a size of 15cm*10cm, then completely soak it in the graphene slurry obtained in S1, and dry it at 100°C for 3 hours after 30 minutes;

[0044] S3, preparation of epoxy resin mixture: take 50g epoxy resin, 25g curing agent and 0.25g defoamer, first adopt the mode of mechanical stirring to mix the three for 20min, then ultrasonic 30min to remove air bubbles, and further mix evenly to obtain mixture;

[0045] S4. Lamination: Immerse the carbon fiber cloth modified by the interface of S2 in the mixture obtained in S3 for 7 minutes, place the fully ...

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Abstract

The invention provides a preparation method of a graphene interface modified carbon fiber / epoxy resin composite. The preparation method comprises following steps: 1, preparation of a graphene slurry,wherein graphene is dispersed in a solvent fully to obtain the graphene slurry; 2, interface modification, wherein carbon fiber cloth is dispersed in the graphene slurry obtained in step 1 for complete immersion, and then is taken out from the graphene slurry for drying; 3, preparation of an epoxy resin mixture, wherein epoxy resin, a curing agent, and an anti-foaming agent are mixed to be uniform, and are subjected to defoaming to obtain a mixture; 4, layering, wherein the modified carbon fiber cloth obtained in step 2 is immersed in the mixture obtained in step 3 completely, and laminating in a die is carried out from bottom to top layer by layer until a formed surface is parallel to the top surface of the die; and 5, curing, wherein a laminated product obtained in step 4 is subjected tonatural curing at room temperature. The interface modification method principle is simple; conditions are mild; operation is convenient; after modification, the bending performance of the composite material is improved effectively; and excellent practical meaning is achieved.

Description

technical field [0001] The invention relates to the technical field of chemistry and chemical engineering, in particular to a method for modifying a carbon fiber / epoxy resin composite material at a graphene interface. Background technique [0002] Carbon fiber / epoxy resin composite material is a composite material of carbon fiber and epoxy resin, which has good mechanical properties, corrosion resistance, radiation resistance and dimensional stability; at the same time, it also has special magnetic properties and electrical properties. Therefore, carbon fiber / epoxy resin composite materials are widely used in aerospace, automobile industry, marine ships, wind power generation, chemical industry, medical treatment and other fields. [0003] As a very important microstructural unit of composite materials, interface plays a very important role in the performance of composite materials. In carbon fiber / epoxy resin composites, the wettability between the carbon fiber in the rein...

Claims

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Application Information

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IPC IPC(8): C08L63/00C08K7/06C08K3/04
CPCC08K7/06C08K3/042C08L63/00
Inventor 孟志新刘星宇孙秦浩周浪王旭东传杨阳尚光伟
Owner XIAN AERONAUTICAL UNIV
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