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Broadband wave-absorbing material based on 3D printing and preparation method thereof

A technology of 3D printing and wave-absorbing materials, applied in the field of wave-absorbing materials, can solve the problems of limited overall structural strength and low bonding strength

Inactive Publication Date: 2021-07-06
TAICANG PAIOU TECH CONSULTING SERVICE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] It can be seen from the above invention examples that most of the research on broadband absorbing materials is concentrated on coating materials or multi-layer structure materials. Adjustment of absorbing performance, three-dimensional superstructure absorbing materials are rarely studied

Method used

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  • Broadband wave-absorbing material based on 3D printing and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0025] A broadband absorbing material based on 3D printing, which is composed of a dielectric layer and a reflective layer stacked from outside to inside, with a periodic three-dimensional structure. The dielectric layer is composed of organic resin binder, ceramic powder and absorber , the reflective layer is metal.

[0026] Further, the wave absorbing agent in the medium layer presents a gradient distribution, and the content gradually increases from the outside to the inside. The wave absorbing agent is carbonyl iron, its shape is granular, and its average particle size is 100nm. The organic resin binder is epoxy resin, and the ceramic powder is silicon carbide.

[0027] Further, the medium layer is a three-dimensional periodic array structure, and the structural unit is a cylinder with a layer number of 2. From the outside to the inside, the structural unit presents a coaxial stack from small to large, with a height of 2 mm and a radius of the bottom cylinder of 2 mm. , t...

Embodiment 2

[0037] A broadband absorbing material based on 3D printing, which is composed of a dielectric layer and a reflective layer stacked from outside to inside, with a periodic three-dimensional structure. The dielectric layer is composed of organic resin binder, ceramic powder and absorber , The reflective layer is ceramic.

[0038] Further, the wave absorbing agent in the dielectric layer presents a gradient distribution, and the content gradually increases from the outside to the inside. The wave absorbing agent is zinc oxide, which is granular in shape and has a particle size of 200nm. The organic The resin binder is amino resin, and the ceramic powder is aluminum oxide.

[0039] Further, the medium layer is a three-dimensional periodic array structure, the structural unit is a cuboid, the number of layers is 2, and the structural unit from the outside to the inside presents a coaxial stack from small to large, and the bottom cuboid has a length of 6mm and a width of 4mm , with...

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Abstract

The invention discloses a broadband wave-absorbing material based on 3D printing. The material is formed by sequentially stacking a dielectric layer and a reflecting layer from outside to inside, and has a periodic three-dimensional structure. The dielectric layer is composed of an organic resin binder, ceramic powder and a wave-absorbing agent, the dielectric layer is of a three-dimensional periodic array structure, structural units are cylinders, cuboids, prisms or prismatic tables, the number of layers is 2-3, and the structural units are coaxially stacked from small to large from outside to inside, and the reflecting layer is made of metal, ceramic or a high-molecular compound. The preparation method of the broadband wave-absorbing material comprises the following steps: establishing a model, preparing powder, and preparing the material through 3D printing. According to the novel three-dimensional structure metamaterial, the integral structural strength of the wave-absorbing material is effectively improved, the adjustability of the wave-absorbing performance of the material is greatly improved, the wave-absorbing frequency band is widened, meanwhile, the manufacturing process is simple, the production efficiency is high, and batch production can be achieved easily.

Description

technical field [0001] The invention relates to a wave-absorbing material, in particular to a 3D printing-based broadband wave-absorbing material and a preparation method thereof. Background technique [0002] With the development of modern electronic communication technology and smart home, electromagnetic pollution in daily life is becoming more and more serious. Excessive electromagnetic wave radiation will not only affect the normal operation of electronic equipment, but also affect human health. Therefore, the development of broadband absorbing materials has very important practical significance. [0003] The wave-absorbing materials that are widely studied are mostly made of resin-based composite magnetic or dielectric wave-absorbing agents. The wave-absorbing frequency band of the material is narrow, and the controllability is poor, and the preparation process is complicated. The emergence of metamaterials provides more ideas for the design of absorbing materials. ...

Claims

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Application Information

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IPC IPC(8): C04B35/565C04B35/10C04B35/14C04B35/584C04B35/563C04B35/622B28B1/00B33Y10/00B33Y70/10C04B35/63C04B35/634
CPCC04B35/565C04B35/10C04B35/14C04B35/584C04B35/563C04B35/622B28B1/001B33Y10/00B33Y70/10C04B35/6303C04B35/63452C04B35/63448C04B35/63456C04B2235/5454C04B2235/5445C04B2235/6026C04B2235/96C04B2235/665
Inventor 王婷肖七巧
Owner TAICANG PAIOU TECH CONSULTING SERVICE
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