Efficient wave-absorbing ultrathin carbon fiber reinforced composite material and design optimization method thereof

Abstract

The invention belongs to the technical field of electromagnetic wave-absorbing and electromagnetic shielding materials, and discloses a high-efficiency wave-absorbing ultrathin carbon fiber reinforcedcomposite material and a design optimization method thereof, the high-efficiency wave-absorbing ultrathin carbon fiber reinforced composite material is composed of two layers of carbon fiber reinforced planar structures; in each layer, periodically arranged fiber arrays with fiber axes parallel to each other are embedded into a ceramic matrix, and the ceramic matrix is used for combining fibers together and providing necessary mechanical or chemical properties; two layers of a planar structure are stacked, fibers of different layers are axially oriented in different directions to form a sheetcomposite structure, and the composite structure can be further stacked in parallel to provide a whole laminated structure material. According to the material, a continuous conductive network can beprovided to effectively absorb electromagnetic waves; optimized electromagnetic characteristics are realized; the microwave absorption efficiency is improved; periodically embedding the fibers into the ceramic matrix helps to improve the mechanical properties of the laminate and increase microwave absorption.

Description

technical field [0001] The invention belongs to the technical field of electromagnetic absorbing and electromagnetic shielding materials, and in particular relates to a high-efficiency absorbing ultra-thin carbon fiber reinforced composite material and a design optimization method thereof. Background technique [0002] Microwave absorbing materials commonly used in the industry are composite materials doped with particles or discontinuous fibers. Composite materials reinforced by particles or discontinuous short fibers are relatively difficult to control the doping ratio, so it is difficult to achieve broadband electromagnetic wave absorption. At the same time, because of the randomness and discontinuity of reinforcement materials, composite materials reinforced by particles or discontinuous short fibers cannot be continuously optimized in advance to achieve the best electromagnetic absorption characteristics. At the same time, the composite materials reinforced by particle...

AI Technical Summary

Problems solved by technology

[0004] (1) The absorption efficiency of existing composite materials for electromagnetic waves is not high

[0005] (2) Existing composite materials cannot be pre-designed to achieve optimized electromagnetic properties due to their discontinuities

[0006] (3) The structural strength of existing composite materials is still lacking after being made into finished products, which reduces their practicability

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