Wave-absorbing material for assorted fibre reinforced resin base sandwich structure and preparation method thereof

A technology for strengthening resin-based and wave-absorbing materials, which is applied in the direction of synthetic resin layered products, chemical instruments and methods, layered products, etc., which can solve the problems of difficulty in ensuring the stability of wave-absorbing performance, deterioration of mechanical properties of composite materials, and difficulty in achieving broadband Absorption and other problems, to achieve excellent matching characteristics, reduce material costs, and meet the effect of lightweight requirements

Active Publication Date: 2011-10-19
NAT UNIV OF DEFENSE TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, the Salisbury screen absorber has a narrow absorption frequency band; the Dallenbach absorber is limited by the dispersion effect of the electromagnetic parameters of the current material, and it is difficult to achieve broadband absorption; the Jaumann absorber has a simple design and a wide absorption frequency band, but its main defect is the large thickness of the material; multi-layer Matching absorbing materials has a wide absorption frequency band, but the design is difficult, and it is difficult to prepare materials with different dielectric properties
It can be seen that there are certain deficiencies in the existing absorbing materials.
In addition, from the current research status of structural absorbing materials, the more commonly used method is to add radar absorbers to composite materials to achieve their absorbing properties. The addition of absorbers will lead to adverse effects such as deterioration of mechanical properties of composite materials and increase in density. , and the stability of the material's absorbing performance is difficult to guarantee

Method used

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  • Wave-absorbing material for assorted fibre reinforced resin base sandwich structure and preparation method thereof
  • Wave-absorbing material for assorted fibre reinforced resin base sandwich structure and preparation method thereof
  • Wave-absorbing material for assorted fibre reinforced resin base sandwich structure and preparation method thereof

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Effect test

Embodiment 1

[0022] Such as figure 1 As shown, a hybrid fiber-reinforced resin-based sandwich structure absorbing material of the present invention is a multi-functional layer superimposed structure, which includes a first dielectric layer 1, an absorbing layer 2, and a second dielectric layer from outside to inside. layer 3 and reflective layer 4, wherein the first dielectric layer 1 is made of basalt fiber reinforced resin matrix composite material, the basalt fiber is the reinforcing fiber, and the total thickness of the first dielectric layer 1 is 2.3 mm; the absorption layer 2 is reinforced by continuous silicon carbide fiber The continuous silicon carbide fiber is a reinforced fiber, and its resistivity is 0.81Ω·cm. The total thickness of the absorption layer 2 is 0.35mm; the second medium layer 3 is made of basalt fiber reinforced resin matrix composite material, and the basalt fiber is Reinforced fiber, the total thickness of the second dielectric layer 3 is 2.4mm; the reflective l...

Embodiment 2

[0030] Such as figure 1 As shown, another wave-absorbing material of hybrid fiber-reinforced resin-based sandwich structure of the present invention is a multi-functional layer superimposed structure, which sequentially includes a first dielectric layer 1, an absorbing layer 2, a second The medium layer 3 and the reflective layer 4, wherein the first medium layer 1 is made of basalt fiber reinforced resin matrix composite material, the basalt fiber is the reinforcing fiber, the total thickness of the first medium layer 1 is 2.2 mm; the absorption layer 2 is made of continuous silicon carbide fiber Reinforced resin-based composite material, continuous silicon carbide fiber is the reinforced fiber, its resistivity is 0.92Ω·cm, the total thickness of the absorption layer 2 is 0.36mm; the second medium layer 3 is composed of basalt fiber reinforced resin-based composite material, basalt fiber The total thickness of the second dielectric layer 3 is 2.3 mm for reinforcing fibers; th...

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Abstract

The invention discloses a wave-absorbing material for an assorted fibre reinforced resin base sandwich structure and a preparation method thereof. The wave-absorbing material has a multi-functional layer laminated structure. The structure comprises a first medium layer, an absorbing layer, a second medium layer and a reflection layer in sequence from the outside to the inside; the first medium layer consists of a basalt fibre reinforced resin base composite material; the absorbing layer consists of a continuous silicon carbide fibre reinforced resin base composite material; the second medium layer consists of a basalt fibre reinforced resin base composite material; and the reflection layer consists of a carbon fibre reinforced resin base composite material. The preparation method for the wave-absorbing material comprises the steps as follows: various fibres satisfying each functional layer are selected firstly; and then the resin is used as a basal body and the wave-absorbing materialis manufactured by adopting a resin base composite material forming technique according to the laminated sequence and thickness of each functional layer. The wave-absorbing material has the advantages of simple structure, good parameter tolerance level, easy forming, excellent wave-absorbing functions, low material cost, etc.

Description

technical field [0001] The invention mainly relates to the field of structural wave-absorbing materials, in particular to a wave-absorbing material with a hybrid reinforced fiber resin-based sandwich structure and a preparation method thereof. Background technique [0002] At present, more mature absorbing material structures include Salisbury screen, Dallenbach screen, Jaumman absorber, multi-layer matching structure, etc. Among them, the Salisbury screen absorber has a narrow absorption frequency band; the Dallenbach absorber is limited by the dispersion effect of the electromagnetic parameters of the current material, and it is difficult to achieve broadband absorption; the Jaumann absorber has a simple design and a wide absorption frequency band, but its main defect is the large thickness of the material; multi-layer The matching absorbing material has a wide absorption frequency band, but it is difficult to design, and it is difficult to prepare materials with different...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B27/04
Inventor 刘海韬程海峰周永江郑文伟楚增勇
Owner NAT UNIV OF DEFENSE TECH
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