A kind of graphene modified carbon fiber pre-fabric and preparation method thereof

Abstract

The invention discloses a graphene-modified carbon fiber prepreg and a preparation method thereof. The preparation raw materials of the graphene-modified carbon fiber prepreg include carbon fiber, resin, graphene, oxidant, diluent, release paper, PE film, carbon fiber is prepared into graphene modified conductive carbon fiber prepreg through carbonization, graphene impregnation, cleaning and drying, hot rolling and yarn spreading composite resin release paper, film coating, winding, etc. The present invention makes the surface of carbon fiber introduce Oxygen-containing groups such as carbonyl and carboxyl groups can change the surface inertness, change the adsorption capacity and composite ability of carbon fibers to active substances, and at the same time improve the strength, toughness, conductivity, etc. of carbon fiber materials, which can be used as conductive heating prepregs. It has unique properties such as ultra-thinness, toughness, water resistance, and attenuation resistance. It can also improve strength, toughness and other properties in special applications of carbon fiber composite materials such as military industry, aerospace, and new energy. It has a very wide range of properties. Modified materials of application value.

Description

technical field [0001] The invention belongs to the technical fields of carbon fiber manufacturing and carbon fiber application, and in particular relates to a graphene-modified carbon fiber pre-fabrication cloth and a preparation method thereof. Background technique [0002] Graphene is a two-dimensional carbon nanomaterial with a hexagonal honeycomb lattice composed of carbon atoms with sp2 hybrid orbitals. It is the thinnest and smallest nanoscale material known. It has extraordinary strength, electrical conductivity and thermal conductivity at room temperature. It has important application prospects in materials science, energy, biomedicine, and drug delivery, and is considered to be a revolutionary material in the future. [0003] Carbon fiber is "soft on the outside and rigid on the inside", which is lighter than metal aluminum, but stronger than steel, and has the characteristics of corrosion resistance and high modulus. It is an important material in national defense...

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Problems solved by technology

[0004] In the application of carbon fiber materials, its surface active functional groups are less and inert. In the production of carbon fiber composite resin materials, the wettability and adhesion between the carbon fiber reinforced matrix and the reinforced resin are poor, resulting in low bonding strength between the carbon fiber reinforced matrix and the resin reinforced composite interface. The difference in bending strength and impact strength is easy to delaminate, which affects the structural performance of carbon fiber composite materials, and affects the power stability and life of carbon fiber composite materials for conductive heating applications. Therefore, the activity of carbon fiber bodies and the strength and toughness of epoxy resin are improved. Carbon fiber The most effective method for the performance of composite materials, which is mainly used in aviation and military fields, sports and leisure industries, automobile manufacturing industries and other industrial fields, so the application market prospect of carbon fiber composite materials is very broad

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