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Mixed wave-absorbing material

A technology of absorbing materials and composite materials, applied in the field of absorbing materials, can solve the problems of high reflectivity and poor impedance matching characteristics of composite absorbing materials, and achieve the effect of improving the absorbing performance

Active Publication Date: 2013-01-30
KUANG CHI CUTTING EDGE TECH LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

And due to the limitations of the physical properties of the material itself, the impedance matching characteristics of the composite absorbing material are generally not good, and the electromagnetic wave incident in free space has a high reflectivity when passing through the absorbing composite material.

Method used

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Embodiment Construction

[0027] Please refer to figure 1 , figure 1 It is a schematic diagram of the structure of the hybrid absorbing material of the present invention. The hybrid absorbing material of the present invention uses the traditional absorbing material as the attenuation layer and uses the traditional absorbing material as the substrate to build an impedance matching layer with impedance matching function. The setting of the impedance matching layer makes the traditional absorbing material only need to consider its attenuation characteristics when configuring. Therefore, the traditional absorbing material in the present invention refers to various common absorbing materials with high loss factors, including those with high magnetic dielectric loss. ferrite, conductive polymer with high resistance loss, carbon black with high dielectric loss, B a T i o 3 , F e T i o 3 ,P b T i o 3 Wait. The attenuation layer is not limited to the examples of traditional absorbing materials mentio...

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Abstract

The invention relates to a mixed wave-absorbing material which comprises an attenuation layer and an impedance matching layer. The impedance matching layer consists of a plurality of uniform metamaterial sheet layers which are vertically and integrally stacked along the direction perpendicular to the surfaces of the metamaterial sheet layers, impedances of the metamaterial sheet layers are gradually changed along the stacking direction of the metamaterial sheet layers, the impedance of the outmost metamaterial sheet layer is identical to that of a free space, and the impedance of the innermost metamaterial sheet layer is identical to that of the attenuation layer. The mixed wave-absorbing material prevents reflection of incidence electromagnetic waves on the surface of the mixed wave-absorbing material and is better in wave absorbing performance.

Description

technical field [0001] The invention relates to a wave-absorbing material, in particular to a mixed wave-absorbing material. Background technique [0002] Absorbing materials refer to a class of functional composite materials that can absorb and attenuate incident electromagnetic wave energy, and convert the electromagnetic energy into heat energy or other energy forms through the dielectric loss of the material. Absorbing materials have great application prospects in controlling electromagnetic pollution and manufacturing stealth materials. [0003] The performance of absorbing materials is mainly measured by: the impedance matching characteristics and attenuation characteristics of absorbing materials. The so-called impedance matching characteristic means that the impedance of the absorbing material and the free space impedance should be as equal as possible so that the incident electromagnetic wave is absorbed as much as possible; the so-called attenuation characteristic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05K9/00
Inventor 刘若鹏徐冠雄张洋洋王文剑
Owner KUANG CHI CUTTING EDGE TECH LTD
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