High-conductivity composite carbon fiber and preparation method thereof

Abstract

The invention discloses a high-conductivity composite carbon fiber and a preparation method thereof, and belongs to composite carbon fibers and a preparation method thereof. The high-conductivity composite carbon fiber provided by the invention consists of carbon fibers as well as metal coatings and graphene coatings, which are sequentially adhered on the surfaces of the carbon fibers from bottom to top; the carbon fibers are carbon fiber yarns, carbon fiber bundles, carbon fiber cloth, carbon fiber paper or carbon fiber fabrics; the metal coatings are a metal copper coating, a metal nickel coating or a metal iridium coating; and the thicknesses of the metal coatings are 50-500nm. The composite carbon fiber prepared by the invention has excellent conductivity and heat conductivity, can conduct or dissipate lightning stroke energy rapidly, and improves the thunder stroke resistant capability of the carbon fiber material.

Description

technical field [0001] The invention relates to a composite carbon fiber and a preparation method thereof, in particular to a high-conductivity composite carbon fiber and a preparation method thereof. Background technique [0002] The early aircraft shell was made of aluminum alloy, and the external metal structure was the most basic lightning protection layer. When struck by lightning, the metal surface was like a shielding plate, and the strong current flowed smoothly through the fuselage or wing skin without damaging the aircraft. cause serious damage. With the continuous development of aviation technology, carbon fiber composite materials have been widely used in various aircraft structures. However, the conductivity of carbon fiber materials is poorer than that of metal materials. When lightning strikes a carbon fiber material part, it is difficult to conduct the current away in a short time, resulting in a rise in temperature, resulting in deep delamination or sever...

AI Technical Summary

Problems solved by technology

However, the conductivity of carbon fiber materials is poorer than that of metal materials. When lightning strikes a carbon fiber material part, it is difficult to conduct the current away in a short time, resulting in a rise in temperature, resulting in deep delamination or severe ablation of the carbon fiber material. The strength and stiffness of the machine will be greatly reduced, causing structural damage and endangering normal use

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