Rapid design method for dielectric composite absorbent

Abstract

The invention discloses a rapid design method for a dielectric composite absorbent. The rapid design method comprises the following steps of: simplifying a transmission line model based on a metal backing according to an electromagnetic theory and a wave absorbing principle to obtain a dielectric absorption model; and performing dielectric parameter scanning, three-dimensional reflection loss cloud picture projection, resonance point redrawing and equal-reflectivity circle introduction on the model to obtain a five-dimensional design model based on the equal-reflectivity circle. According to the model and the method, the wave absorbing performance of the absorbent can be evaluated, a modification path can be provided, reference and basis are provided for material selection and subsequent preparation of the dielectric type absorbent, and research and development of the absorbent are accelerated.

Description

technical field [0001] The invention belongs to the technical field of wave-absorbing materials, and specifically proposes a method for quickly designing dielectric-type wave-absorbing materials. Background technique [0002] Dielectric absorbers have excellent dielectric loss, diverse microstructures, superior mechanical properties, good chemical stability, and low specific gravity, but their interface impedance matching is poor, microwave loss forms are single, and low-frequency absorption is weak. The effective absorption frequency band is narrow, and it is difficult to meet the urgent needs of modern combat aircraft for stealth materials "thin, light, wide, and strong". In addition, there are bottleneck problems such as complex preparation process, small microstructure change, poor interface wettability, and difficult dispersion, which seriously restricts The application of dielectric materials in the field of stealth. [0003] As a new type of absorber, the dielectric ...

AI Technical Summary

Problems solved by technology

[0011] The present invention proposes a rapid design method for dielectric type composite absorbents, through a five-dimensional (thickness, frequency band, reflectivity, complex permittivity real part and imaginary part) integrated design model, to solve the dielectric type absorbent research and development efficiency Lower problems, providing reference and basis for dielectric type absorbent material selection and subsequent preparation

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