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Method for preparing wave absorption material

A technology of absorbing materials and composite materials, applied in the field of materials, can solve the problems of unsatisfactory absorbing performance and high cost.

Inactive Publication Date: 2018-05-15
SHANGHAI DIANJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, ferrite or metal is usually used alone as the absorbing material, and the absorbing performance of these materials often does not meet the requirements, and the cost is expensive

Method used

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Embodiment Construction

[0013] In order to make the technical means, creative features, goals and effects achieved by the present invention easy to understand, the implementation process of the above-mentioned technical solution is further described below.

[0014] A method for preparing a wave-absorbing material disclosed in the present invention specifically includes the following steps:

[0015] The first step is to ultrasonically disperse the 3 mg / mL graphene oxide (GO) dispersion prepared by the Hummer method, add a small amount of hydrochloric acid solution, adjust the pH of the solution to 3-5, heat and magnetically stir, and transfer the solution to polytetrafluoroethylene Sealed heat preservation in the ethylene reactor;

[0016] In the second step, the soluble iron salt, tin salt and graphene oxide dispersion are mixed according to the mass ratio of 1:40~60:40~60; a stable brown suspension is obtained after continuous stirring for 1 hour; the above-mentioned The brown suspension is sealed ...

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Abstract

The invention discloses a method for preparing a wave absorption material. The method comprises the following steps: preparing a graphene oxide dispersion liquid, preparing an intermediate state composite material, and performing material preparation. Due to effective compounding of graphene, tin dioxide and ferric oxide, the interfacial polarization property of the material is improved, under thesynergetic effect of magnetic consumption and dielectric consumption, the impedance matching and the attenuation matching of the composite material are improved, and furthermore the microwave absorption property of the material is improved.

Description

technical field [0001] The invention relates to the field of materials, in particular to a preparation method of a composite wave-absorbing material. Background technique [0002] Electromagnetic pollution not only affects the normal use of electronic equipment, but also endangers human health. Eliminating electromagnetic wave pollution and developing composite materials with wave-absorbing functions have broad application space. At present, ferrite or metal is usually used alone as a wave absorbing material, and the wave absorbing performance of these materials often fails to meet requirements, and at the same time, the cost is expensive. Contents of the invention [0003] The purpose of the present invention is to overcome the above-mentioned problems, propose a kind of preparation method of wave-absorbing material, disclose a kind of preparation method of the material with good wave-absorbing performance, through the effective composite of graphene, tin dioxide, ferrit...

Claims

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Application Information

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IPC IPC(8): C09K3/00
CPCC09K3/00
Inventor 林晓晨王敬锋
Owner SHANGHAI DIANJI UNIV
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