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A kind of porous ferric oxide/carbon nanorod electromagnetic wave absorbing material and its preparation method and application

A technology of ferroferric oxide and absorbing materials, which is applied in the field of electromagnetic wave absorbing materials, and can solve problems such as unfavorable stability of absorbing materials and weak oxidation resistance of metal cobalt

Active Publication Date: 2020-10-20
SHANDONG UNIV
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Problems solved by technology

However, the weak oxidation resistance of metal cobalt is not conducive to the stability of absorbing materials.

Method used

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  • A kind of porous ferric oxide/carbon nanorod electromagnetic wave absorbing material and its preparation method and application
  • A kind of porous ferric oxide/carbon nanorod electromagnetic wave absorbing material and its preparation method and application
  • A kind of porous ferric oxide/carbon nanorod electromagnetic wave absorbing material and its preparation method and application

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Embodiment Construction

[0009] Technical scheme of the present invention is as follows:

[0010] A porous Fe3O4 / carbon nanorod composite electromagnetic wave absorbing material, which is a multiphase nanocomposite powder composed of carbon and Fe3O4; wherein, Fe3O4 particles are embedded in the carbon sheet to form a porous structure of monodisperse nanorods.

[0011] According to the present invention, preferably, the composite electromagnetic wave absorbing material has a size of 1.0-1.2 μm and a pore diameter of 1-20 nm. The pore structure exists between the particles of Fe3O4 and inside the nano-carbon layer.

[0012] According to the present invention, preferably, the size of the ferric oxide particles is 40-50 nm.

[0013] According to the present invention, preferably, in the porous ferric oxide / carbon nanorod composite material, the mass ratio of carbon to ferric oxide is (1-40):(60-99).

[0014] According to the present invention, preferably, the carbon is amorphous carbon.

[0015] The ...

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Abstract

The invention relates to a porous ferroferric oxide / carbon nanometer rod-shaped electromagnetic wave absorbing material and a preparing method and application thereof. The porous ferroferric oxide / carbon nanometer rod-shaped electromagnetic wave absorbing material is multi-phase nanometer composite powder composed of carbon and ferroferric oxide and a nanometer rod of a porous structure with thelength being 1.0-1.2 micrometers. The preparing method comprises the steps of dissolving raw materials like ferric trichloride hexahydrate and fumaric acid into deionized water, conducting a reactionto obtain a precursor, conducting calcination under nitrogen atmosphere and directly synthesizing the porous ferroferric oxide / carbon nanometer rod composite material. The porous ferroferric oxide / carbon nanometer rod composite material is high in stability and uniformity, has the advantages of being high in electromagnetic wave absorbing performance, wide in absorbing and covering frequency range, high in corrosion resistance and oxidation resistance and low in cost and is used for manufacturing an electromagnetism absorber.

Description

technical field [0001] The invention relates to a porous ferric oxide / carbon nanorod electromagnetic wave absorbing material obtained from a metal framework derivative (MOF), a preparation method and application thereof, and belongs to the technical field of electromagnetic wave absorbing materials. Background technique [0002] With the rapid development of radio communication technology in military and civilian applications, the increasing electromagnetic interference problems make electromagnetic wave absorbing materials more and more attention. On the other hand, electromagnetic wave absorbing materials, as an important part of stealth technology, can make the incident electromagnetic wave pass through the medium loss and convert the energy into heat energy to be absorbed without changing the shape of the equipment, thereby reducing the detection rate and improving Equipment own survival rate. Therefore, the research on electromagnetic wave absorbing material technology...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01F1/03H01F41/00H05K9/00C01G49/08C01B32/15B82Y40/00B82Y30/00
CPCB82Y30/00B82Y40/00C01G49/08C01P2002/72C01P2004/03C01P2004/04C01P2004/10C01P2004/61C01P2004/62C01P2004/80C01P2006/42H01F1/0072H01F1/0315H05K9/0081
Inventor 刘久荣刘伟吴莉莉吴楠楠汪宙
Owner SHANDONG UNIV
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