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

Abstract

The invention discloses a hybrid fiber-reinforced resin-based sandwich structure wave-absorbing material and a preparation method thereof. The wave-absorbing material is a multi-functional layer superposition structure, and the structure includes a first medium layer and an absorbing layer in sequence from outside to inside. , a second medium layer and a reflection layer, the first medium layer is made of basalt fiber reinforced resin matrix composite material, the absorption layer is made of continuous silicon carbide fiber reinforced resin matrix composite material, and the second medium layer is made of basalt fiber The reflective layer is made of reinforced resin-based composite material, and the reflective layer is made of carbon fiber-reinforced resin-based composite material. The preparation method of the wave-absorbing material is as follows: first select various fibers that satisfy each functional layer; then use the resin as the matrix, and use the resin-based composite material molding process to obtain the wave-absorbing material of the present invention according to the stacking sequence and thickness of each functional layer . The wave-absorbing material of the invention has the advantages of simple structure, good parameter tolerance, easy molding, excellent wave-absorbing function, low material cost and the like.

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...

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

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