Preparation method of graphene/flat cocoon toughened carbon fiber composite material

A composite material and graphene technology, which is applied in the preparation field of graphene/flat cocoon toughened carbon fiber composite materials, can solve the problems affecting the performance of silkworm cocoons, and achieve good toughening effect, convenient production and light composite materials

Inactive Publication Date: 2021-08-10
SOUTHWEST UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the deficiencies of the prior art, the present invention provides a preparation method of a graphene / flat cocoon toughened carbon fiber composite material, which has the advantages of superior mechanical properties and good toughening effect, and solves the problem that splicing in the prior art affects the performance of silkworm cocoons

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Embodiment one: a kind of preparation method of graphene / flat cocoon toughened carbon fiber composite material, comprises the following steps:

[0028] 1) Bombyx mori spin silk in a two-dimensional plane to prepare flat cocoons of different sizes and thicknesses. The size and thickness of flat cocoons can be adjusted by changing the number of cooked silkworms and the time for spinning silk. Feeding silkworms to the fifth instar will not Set up a cluster tool to make the five-year-old mature silkworm spin silk in a square flat plate, thereby obtaining a flat cocoon of a certain thickness, the number of mature silkworms: 200, and the thickness parameter: 0.1mm;

[0029] 2) Disperse graphene nanosheets in epoxy resin by water bath method and ultrasonic-assisted method. The graphene / epoxy resin mixture is prepared by ultrasonic-assisted method to disperse the nanoparticles uniformly. The conditions are temperature 40°C, time 10min, Vacuum auxiliary equipment is used to defo...

Embodiment 2

[0035] Embodiment two: a kind of preparation method of graphene / flat cocoon toughened carbon fiber composite material, comprises the following steps:

[0036]1) Bombyx mori spin silk in a two-dimensional plane to prepare flat cocoons of different sizes and thicknesses. The size and thickness of flat cocoons can be adjusted by changing the number of cooked silkworms and the time for spinning silk. Feeding silkworms to the fifth instar will not Set up a cluster tool to make the five-year-old mature silkworm spin silk in a square flat plate, thereby obtaining a flat cocoon of a certain thickness, the number of cooked silkworms: 1000, and the thickness parameter: 2mm;

[0037] 2) Disperse graphene nanosheets in epoxy resin by water bath method and ultrasonic-assisted method. The graphene / epoxy resin mixture is prepared by ultrasonic-assisted method to disperse the nanoparticles uniformly. The conditions are temperature 90°C, time 30min, Vacuum auxiliary equipment is used to defoam...

Embodiment 3

[0043] Embodiment three: a kind of preparation method of graphene / flat cocoon toughened carbon fiber composite material, comprises the following steps:

[0044] 1) Bombyx mori spin silk in a two-dimensional plane to prepare flat cocoons of different sizes and thicknesses. The size and thickness of flat cocoons can be adjusted by changing the number of cooked silkworms and the time for spinning silk. Feeding silkworms to the fifth instar will not Set up a cluster tool to make the five-year-old mature silkworm spin silk in a square flat plate, thereby obtaining flat cocoons of a certain thickness, the number of cooked silkworms: 600, and the thickness parameter: 1.05mm;

[0045] 2) The graphene nanosheets were dispersed in epoxy resin by water bath method and ultrasonic-assisted method, and the graphene / epoxy resin mixture was prepared by ultrasonic-assisted method to disperse the nanoparticles uniformly. Vacuum auxiliary equipment is used for defoaming. The graphene / epoxy resin...

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Abstract

The invention relates to the technical field of composite material preparation, and discloses a preparation method of a graphene/flat cocoon toughened carbon fiber composite material, which comprises the following steps: 1) enabling silkworms to spin in a two-dimensional plane to prepare flat cocoons with different areas and thicknesses, the size and the thickness of the flat cocoons being adjusted by changing the number of matured silkworms and the spinning time. According to the preparation method of the graphene/flat cocoon toughened carbon fiber composite material, flat cocoons with a natural cocoon shell structure are prepared by utilizing the spinning instinct of silkworms, the size and the thickness of the flat cocoons can be adjusted by changing the number of matured silkworms and the spinning time, and the flat cocoons are fluffy and soft in structure and can be freely cut; graphene/flat cocoon prepregs and graphene/carbon fiber prepregs are prepared by using a method of doping epoxy resin into graphene nanosheets, are alternately laid in a certain arrangement mode and proportion, and are hot-pressed and cured to obtain the carbon fiber composite material with an excellent toughening effect.

Description

technical field [0001] The invention relates to the technical field of composite material preparation, in particular to a method for preparing a graphene / flat cocoon toughened carbon fiber composite material. Background technique [0002] Due to its low density and excellent mechanical properties, carbon fiber reinforced epoxy resin composites have long been a hot spot in the research of composite materials, but due to their insufficient toughness at high speed and low temperature, their applications in many fields are limited. , Therefore, in the existing research on carbon fiber composite materials, corresponding toughening filler materials will be added to meet the corresponding mechanical performance requirements, such as adding one-dimensional nanomaterials carbon nanotubes and two-dimensional nanomaterials graphene, etc. To toughen carbon fiber composites. For example, in the Chinese invention patent CN101007443A published in 2007, the name of the document is the prep...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J5/24C08L63/00C08L89/00C08K3/04
CPCC08J5/24C08J2363/00C08J2489/00C08K3/042C08K2201/011
Inventor 刘毓龙邵家兴张同华陈磊谭蕊译李甜蒲建渝吴丰宇杨大继龚丽沙张晓雯阮伟
Owner SOUTHWEST UNIVERSITY
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