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Light-weight wave-absorbing material adopting interlayer structure and preparation method of wave-absorbing material

A wave-absorbing material and lightweight interlayer technology, which is applied in the field of fiber-absorbing materials, can solve problems such as difficulty in taking into account waterproof, flame-retardant and other properties, limit the practical application of wave-absorbing materials, and single absorption band, etc., and achieve easy large-scale mass production , light weight, good environmental adaptability

Active Publication Date: 2016-10-26
TIANNUO PHOTOELECTRIC MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Existing absorbing materials have shortcomings such as narrow absorption frequency band, single absorption band, high density, large thickness, and easy oxidation, and when used in special places, it is difficult to take into account waterproof and flame-retardant properties, which limits the practical application of absorbing materials

Method used

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  • Light-weight wave-absorbing material adopting interlayer structure and preparation method of wave-absorbing material
  • Light-weight wave-absorbing material adopting interlayer structure and preparation method of wave-absorbing material
  • Light-weight wave-absorbing material adopting interlayer structure and preparation method of wave-absorbing material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] 1) Put the flake ferrite with a particle size of 10nm in butyl acetate for 30min;

[0035] 2), control the mass ratio of the sheet ferrite after the pretreatment in step 1 to the polyethylene substrate to be 20:80, and mix the two evenly, and prepare wave-absorbing polymer slices by melting, casting, and slicing ;

[0036] 3) Slicing the wave-absorbing polymer described in step 2, drying, melting, molding, forming, cooling, and demoulding to prepare wave-absorbing polymer structural parts and sheets, wherein the cross-section of the structural part is a regular octagon;

[0037] 4) In step 3, the inner and outer surfaces of the wave-absorbing polymer structural member are laminated with a wave-absorbing braided fabric made of vinylon fiber filaments and wave-absorbing fiber filaments at a mass ratio of 10:90 to prepare a structural wave-absorbing layer; wherein , Absorbing fiber filaments are prepared with 20nm irregular metal powder as the absorbing agent, polypropyle...

Embodiment 2

[0040] 1) Put rod-shaped silicon carbide with a particle size of 20nm and irregular metal powder with a particle size of 10nm in ethanol for 60min;

[0041]2), control the mass ratio of the rod-shaped silicon carbide and irregular metal powder after the pretreatment in step 1 to the polypropylene base material to be 30:70, and mix the two evenly, melt, cast, and slice to prepare the absorbent wave polymer slices;

[0042] 3) Slicing the wave-absorbing polymer described in step 2, drying, melting, molding, forming, cooling, and demoulding to prepare wave-absorbing polymer structural parts and sheets, the cross-section of which is circular;

[0043] 4) Lay the inner and outer surfaces of the wave-absorbing polymer structural part described in step 3 with the wave-absorbing braid woven with polytetrafluoroethylene fiber filaments and wave-absorbing fiber filaments at a mass ratio of 20:80 to prepare a structural wave-absorbing layer ; Among them, the wave-absorbing fiber filamen...

Embodiment 3

[0046] 1), placing the dendritic alloy powder with a particle size of 5nm in acetone for 20min;

[0047] 2), controlling the mass ratio of the dendritic alloy powder after the pretreatment described in step 1 to the polyethylene base material to be 30:70, and uniformly mixing the two, melting, casting, and slicing to prepare wave-absorbing polymer slices;

[0048] 3) Slicing the wave-absorbing polymer described in step 2, drying, melting, molding, forming, cooling, and demoulding to prepare wave-absorbing polymer structural parts and sheets, the cross-section of which is a regular quadrilateral;

[0049] 4) In step 3, the inner and outer surfaces of the wave-absorbing polymer structural member are laminated with polypropylene fiber filaments and wave-absorbing fiber filaments with a mass ratio of 20:80 to prepare a wave-absorbing layer; wherein, The wave-absorbing fiber filament is prepared with a mixture of 10nm spherical metal powder and 30nm flake carbon black as the wave a...

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Abstract

The invention discloses a light-weight wave-absorbing material adopting an interlayer structure and a preparation method of the wave-absorbing material. The light-weight wave-absorbing material adopting the interlayer structure comprises a structural wave-absorbing layer and wave-absorbing polymer sheets, wherein the wave-absorbing polymer sheets are attached to the upper surface and the lower surface of the structural wave-absorbing layer, and the structural wave-absorbing layer comprises a wave-absorbing polymer structural part and wave-absorbing woven fabric attached to the inner surface and the outer surface of the wave-absorbing polymer structural part. The wave-absorbing polymer structural part comprises nano absorbents and a polymer matrix, the nano absorbents are uniformly dispersed in the polymer matrix, and the wave-absorbing woven fabric is formed by weaving wave-absorbing fiber filaments with the nano absorbents uniformly dispersed in the fiber matrix and another kind of fiber filaments. The light-weight wave-absorbing material has the characteristics of high absorbing strength, light weight, small thickness, good environment adaptability, good processing performance, simple process, convenience in operation, economical performance, environmental protection and the like.

Description

technical field [0001] The invention relates to a fiber wave-absorbing material, in particular to a lightweight sandwich structure wave-absorbing material and a preparation method thereof. Background technique [0002] With the rapid development of the modern electronic industry, the application of electromagnetic waves in wireless communication and other fields has penetrated into everyone's life. In order to improve the transmission speed of signals, the frequency of use is still increasing. Satellites transmit and receive electromagnetic waves to the ground through antennas, and the information exchange between mobile phones and base stations is done through electromagnetic waves to complete the transmission of audio, video and various digital signals. In addition, the changing electromagnetic fields of various electronic products can generate electromagnetic waves, which radiate a large number of electromagnetic waves of different wavelengths and frequencies into the env...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B27/20B32B27/12B32B5/02B32B37/00
CPCB32B5/024B32B27/12B32B27/20B32B37/00B32B2250/02B32B2305/184B32B2305/30B32B2307/102B32B2307/212B32B2307/552B32B2307/752B32B2571/00
Inventor 朱焰焰刘久荣郑杰
Owner TIANNUO PHOTOELECTRIC MATERIAL
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