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Preparation method of ternary nano-composite wave-absorbing material

A wave absorbing material and nanocomposite technology, applied in the field of wave absorbing materials, can solve the problems of narrow absorption frequency band, weak dielectric loss ability, high density, etc., and achieve the effect of wide wave absorption frequency band, low cost and good wave absorption performance.

Active Publication Date: 2018-07-06
YANCHENG INST OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the disadvantages of high density, weak dielectric loss capability, and narrow absorption frequency band limit its application in absorbing materials.

Method used

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  • Preparation method of ternary nano-composite wave-absorbing material
  • Preparation method of ternary nano-composite wave-absorbing material
  • Preparation method of ternary nano-composite wave-absorbing material

Examples

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Embodiment 1

[0027] A method for preparing a ternary nanocomposite wave-absorbing material, comprising the steps of:

[0028] (1) Preparation of barium ferrite nanopowder co-doped with terbium and europium: according to the chemical formula BaFe 11.6 Tb 0.2 Eu 0.2 o 19 Weigh the nitrates of Ba, Fe, Tb, Eu, mix and dissolve in distilled water to obtain a uniform nitrate solution, then slowly add the mixed solution of sodium carbonate and sodium hydroxide dropwise, keep stirring, and then place Aging at room temperature to obtain a layered solution, after suction filtration, washing with distilled water and absolute ethanol until the filtrate is neutral, drying the filter residue, grinding, and calcining at 900°C for 3 hours to obtain barium co-doped with terbium and europium Ferrite nanopowder; Wherein, the mol ratio of sodium carbonate and barium nitrate is 1:1, and the mol ratio of ferric nitrate and sodium hydroxide is 1:3;

[0029] (2) Preparation of binary nanocomposites: Take 0.5g...

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Abstract

The invention relates to a preparation method of a ternary nano-composite wave-absorbing material. The preparation method comprises the following steps: taking terbium oxide, europium oxide, barium nitrate and ferric nitrate as raw materials and preparing terbium and europium codoped barium ferrite nanoparticles by using a co-precipitation method; then preparing a binary complex of polyaniline-coated and terbium and europium codoped barium ferrite nanoparticles by an in-situ polymerization method; finally, uniformly compounding graphene oxide with the binary nanometer complex, uniformly mixing the substances in an aqueous solution, and taking hydrazine hydrate as a reducing agent to obtain the ternary nano-composite wave-absorbing material. The method disclosed by the invention has the advantages of simplicity, easiness in operation and low cost; the prepared wave-absorbing material has the advantages of high dielectric loss and magnetic loss, wide absorbing frequency band, good absorbing property and significant potential application value in the field of wave absorption.

Description

technical field [0001] The invention relates to a preparation method of a nanocomposite wave-absorbing material, which belongs to the technical field of wave-absorbing materials. Background technique [0002] With the advancement of science and technology and the development of society, various electronic products such as digital cameras and computers have entered thousands of households. While bringing people a rich and colorful life, they have also brought many invisible major harm. Many investigations have shown that excessive electromagnetic radiation can cause disorders in the nervous system, immune system, reproductive system, and blood circulation system, and may even induce serious diseases including various types of cancer. Therefore, nano-absorbing materials have gradually entered people's field of vision. [0003] As electromagnetic concealment materials have attracted the attention of military equipment for radar protection or isolation in many countries, high-...

Claims

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Application Information

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IPC IPC(8): C09K3/00C08G73/02C08K3/22
CPCC08G73/0266C08K3/22C08K2201/011C09K3/00
Inventor 罗驹华张康成明亮左悦王旭许剑光
Owner YANCHENG INST OF TECH
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