A kind of preparation method for the nanocomposite material that is used for absorbing electromagnetic wave

A nano-composite material and a technology for absorbing electromagnetic waves, applied in the field of preparation of nano-composite materials, can solve the problems of limiting the wide use of microwave absorbents, limiting the wide application, difficulty in electromagnetic wave absorption, etc. Effect

Active Publication Date: 2021-06-15
TONGJI UNIV
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Problems solved by technology

At present, the microwave absorption properties of traditional electromagnetic wave absorbing materials have been improved, but the traditional magnetic media have strong microwave absorption capabilities, while high density, large thickness and narrow absorption bandwidth limit their widespread use as microwave absorbers
Although traditional electrically lossy carbon-based absorbers have achieved wide bandwidth, light weight and high stability, however, the impedance mismatch between carbon and air leads to the reflection of a large number of incident electromagnetic waves, limiting their wide application.
Therefore, it is very difficult to achieve high-performance electromagnetic wave absorption for a single magnetic and dielectric

Method used

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  • A kind of preparation method for the nanocomposite material that is used for absorbing electromagnetic wave
  • A kind of preparation method for the nanocomposite material that is used for absorbing electromagnetic wave
  • A kind of preparation method for the nanocomposite material that is used for absorbing electromagnetic wave

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Embodiment Construction

[0031] The implementation of the present invention is described below through specific specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific implementation modes, and various modifications or changes can be made to the details in this specification based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that, in the case of no conflict, the following embodiments and features in the embodiments can be combined with each other. It should also be understood that the terminology used in the embodiments of the present invention is for describing specific implementations, not for limiting the protection scope of the present invention. The test methods for which specific conditions are not indicated in the fo...

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Abstract

The invention discloses a nanocomposite material and its preparation method and application, wherein the preparation method at least includes the following steps: loading iron salt and aromatic polycarboxylic acid on the surface of graphene oxide through a reaction medium. The invention can obtain the wave-absorbing material with adjustable composition, controllable structure and high performance.

Description

technical field [0001] The invention belongs to the field of functional materials, and in particular relates to a preparation method of a nanocomposite material for absorbing electromagnetic waves. Background technique [0002] With the rapid development of science and technology and the electronic industry, various digital and high-frequency electronic and electrical equipment radiate a large number of electromagnetic waves of different frequencies into the space during work, resulting in electromagnetic radiation pollution. In order to solve the problem of electromagnetic pollution and realize the stealth of equipment on the battlefield, wave-absorbing materials came into being. An ideal electromagnetic wave absorbing material must meet the requirements of strong absorption, wide bandwidth, light density and thin matching thickness. At present, the microwave absorption properties of traditional electromagnetic wave absorbing materials have been improved, but traditional m...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K3/00H05K9/00B82Y30/00
CPCB82Y30/00C09K3/00H05K9/0088
Inventor 陆伟向震熊娟邓柏闻刘志成
Owner TONGJI UNIV
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