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Graphene film frequency selective surface

A technology of frequency selective surface and graphene film, which is applied in the direction of synthetic resin layered products, waveguide devices, electrical components, etc., can solve problems such as thermal mismatch, weight gain, and easy-to-corrosion structures, and achieve light weight and improved adaptability Ability, the effect of high conductivity

Active Publication Date: 2015-12-16
NAT UNIV OF DEFENSE TECH
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Problems solved by technology

[0004] The purpose of the present invention is to provide a graphene film frequency selective surface, the present invention mainly solves the technical problems of thermal mismatch, easy corrosion and structural weight gain caused by the application of metal FSS to FRP and its structure in the prior art

Method used

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  • Graphene film frequency selective surface
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preparation example Construction

[0034] see Figure 7 On the other hand, the present invention also provides a preparation method comprising the steps of:

[0035]Forming: forming the graphene film layer 100 according to a preset pattern;

[0036] Paste: paste the graphene film layer 100 with preset graphics on the fiber-reinforced resin layer;

[0037] Press forming: the fiber-reinforced resin pasted with the graphene film layer 100 is press-cured.

[0038] FSS with high thermal stability can be obtained by adopting the above steps.

Embodiment 1

[0041] Prepare FSS sample 1 according to the following steps:

[0042] 1) The selected conductivity is about 1×10 5 A graphene film with a S / m thickness of 20 μm, engraving a plurality of cross-shaped through holes regularly arranged on the graphene film by laser engraving;

[0043] 2) Quartz fiber-reinforced epoxy resin composite honeycomb sandwich panels were prepared as substrates by vacuum infusion, and the upper and lower panels of the honeycomb sandwich panels were both quartz fiber-reinforced epoxy composite laminates with a thickness of 1.5 mm. The sandwich core is a Nomex honeycomb with a core material thickness of 8 mm and a hole side length of 4 mm. Using epoxy resin as a binder, the graphene film layer with multiple cross-shaped through holes is pasted to the quartz fiber reinforced epoxy composite honeycomb core. the surface of the board substrate;

[0044] 3) pressurized and solidified by a vacuum bag method to obtain a graphene film FSS with a band-pass shape....

Embodiment 2

[0046] Prepare FSS sample 2 according to the following steps:

[0047] 1) Select the conductivity as 2×10 5 S / m graphene film with a thickness of 100 μm, engraving a plurality of H-shaped patch units regularly arranged on the graphene film by mechanical engraving;

[0048] 2) A quartz fiber reinforced cyanate ester composite laminate with a thickness of 1mm was prepared as a substrate by a vacuum bagging method, and a graphene film layer with multiple H-shaped patch units was prepared with a cyanate resin as a binder. Bonded to the surface of a quartz fiber reinforced cyanate ester composite laminate substrate;

[0049] 3) pressurized and solidified by the vacuum bag pressure method to obtain a graphene film FSS with a band barrier shape.

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Abstract

The invention discloses a graphene film frequency selective surface comprising a substrate and a graphene film layer disposed on the substrate. The substrate is prepared from fiber reinforced polymer composite material. The graphene film layer comprises a graphene film with periodically-arranged holes or graphene film chips arranged periodically. The graphene film frequency selective surface is simple in technique implementation, well matches the fiber reinforced resins composite material substrate, is low in weight increment, resistant to corrosion, and can be widely applied to devices such as composite material radomes or filters.

Description

technical field [0001] The invention relates to the technical field of frequency selective surfaces, in particular to a graphene film frequency selective surface. Background technique [0002] Frequency Selective Surfaces (FSS for short) is a two-dimensional periodic array structure, which is a spatial filter in essence, and is composed of identical units arranged at regular intervals in the two-dimensional direction. FSS has a specific frequency selection effect and is widely used in microwave, infrared to visible light bands. Frequency selective surfaces include patch types and slot types. The patch type is obtained by periodically covering the surface of the medium with the same metal patches. Generally speaking, it is used as a band-stop filter, which can play the role of low-frequency transmission and high-frequency reflection. The slotting type is obtained by periodically opening slots on the metal plate. From the perspective of frequency characteristics, it is class...

Claims

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Application Information

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IPC IPC(8): H01P1/20B32B9/04B32B27/04B32B27/06B32B3/12B32B3/24
Inventor 鞠苏张鉴炜江大志黄春芳郑青尚新龙何明昌
Owner NAT UNIV OF DEFENSE TECH
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