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A kind of preparation method based on graphene reinforced carbon fiber composite material

A composite material and graphene technology, applied in the field of material science, can solve problems such as the inability to combine graphene and carbon fiber, and achieve the effect of improving mechanical properties and improving mechanical properties

Active Publication Date: 2021-04-13
HARBIN INST OF TECH
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  • Description
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  • Application Information

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Problems solved by technology

[0004] The present invention provides a kind of preparation method based on graphene reinforced carbon fiber composite material aiming at the urgency of the above research on graphene-based reinforced carbon fiber composite material and the urgency of solving the problem of preparation method based on graphene reinforced carbon fiber composite material
The invention solves the problem that the existing methods cannot combine graphene and carbon fiber, improves the mechanical properties of fiber composite materials, increases the competitive advantages of composite materials in the application field, and provides a graphene-based reinforced carbon fiber composite material. new preparation method

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  • A kind of preparation method based on graphene reinforced carbon fiber composite material
  • A kind of preparation method based on graphene reinforced carbon fiber composite material

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specific Embodiment approach 1

[0023] Specific Embodiment 1: This embodiment provides a method that can be used to prepare a graphene-based reinforced carbon fiber composite material. In the method, the three-dimensional graphene skeleton is prepared by vacuum infusion to prepare the precursor of the composite material slurry, and then high-speed stirring is used. Ultrasonic-assisted preparation of highly dispersed graphene resin-based composite material slurry, and finally prepared graphene / fiber-reinforced resin-based composite material by gradient curing winding method. Specifically include the following steps:

[0024] Step 1, the preparation of graphene sponge:

[0025] Method 1. Use the improved freeze-drying method to prepare graphene sponge. The specific steps are as follows: freeze the dispersed graphene aqueous solution with a concentration of 5-20 mg / ml at low temperature (below 0°C), and use freeze-drying Porous graphene sponge (density 5~20mg / ml) obtained by method;

[0026] Method 2. The gra...

specific Embodiment approach 2

[0033] Embodiment 2: This embodiment differs from Embodiment 1 in that: in step 1, the concentration of the graphene aqueous solution is 5-10 mg / ml; the concentration of the graphene oxide aqueous solution is 5-20 mg / ml.

specific Embodiment approach 3

[0034] Embodiment 3: This embodiment differs from Embodiment 1 or Embodiment 2 in that: in step 1, the temperature used for the chemical reduction of hydrazine hydrate is 90°C, and the use time is 24 hours; the thermal reduction temperature is 600-800°C.

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Abstract

The invention discloses a method for preparing a graphene-reinforced carbon fiber composite material. In the method, a three-dimensional graphene skeleton is prepared by a vacuum infusion method to prepare a composite material slurry precursor, and then a high-speed stirring ultrasonic-assisted method is used to prepare highly dispersed graphite. Graphene resin-based composite material slurry, and finally prepared graphene / fiber-reinforced resin-based composite material by gradient curing winding method. The invention solves the problem that the existing method cannot combine graphene and carbon fiber, improves the mechanical properties of fiber composite materials, increases the competitive advantages of composite materials in the application field, and provides a graphene-based reinforced carbon fiber composite material. New method of preparation.

Description

technical field [0001] The invention belongs to the technical field of material science and relates to a method for preparing a graphene-based reinforced carbon fiber composite material. Background technique [0002] Since the advent of carbon fiber in 1959, it has now developed into an independent and complete new industrial system, known as the "black revolution" in the field of materials. Carbon fiber is light in weight, good in fineness, high in tensile strength, and has the characteristics of general carbon materials such as high temperature resistance, friction resistance, electrical conductivity, thermal conductivity, and small expansion coefficient. Carbon fiber composite materials developed on this basis have been used in military and civil industries due to their advantages of light weight and high strength, especially in the aerospace field, which has attracted worldwide attention. Compared with steel, carbon fiber composites are 75% lighter in mass, but 4 times ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L63/00C08K3/04C08K7/06C08J5/04C08J5/00
CPCC08J5/005C08J5/042C08J2363/00C08K7/06C08K3/042
Inventor 彭庆宇赵旭赫晓东
Owner HARBIN INST OF TECH