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Preparation method of composite wave absorbing material with magnetic particles intercalated with porous graphene

A composite wave-absorbing material and porous graphene technology, applied in chemical instruments and methods, and other chemical processes, can solve problems such as poor wave-absorbing performance, and achieve good wave-absorbing performance, light weight, and good high-temperature resistance.

Inactive Publication Date: 2018-10-16
NANTONG UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the problem of poor wave-absorbing performance of existing graphene materials, the object of the present invention is to provide a preparation method of a composite wave-absorbing material intercalated with magnetic particles porous graphene, and combine graphene materials with magnetic particles to solve the above-mentioned background questions raised in technology

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] A preparation method of a composite wave-absorbing material intercalated with magnetic particles and porous graphene, the specific steps are as follows:

[0044] S1. Dissolve the multilayer graphene oxide into distilled water, and then expand the graphene layer under the action of microwave field, and the microwave time is 1min;

[0045] S2, drying the expanded multilayer graphene oxide, the drying temperature is 60°C, and the drying time is 100min;

[0046] S3, configuring a solvent containing distilled water, ethanol and tetrahydrofuran;

[0047] S4, adding potassium hydroxide, cobalt acetylacetonate, iron acetylacetonate, nickel acetylacetonate to the solvent prepared in step S3;

[0048] S5, adding step S2 multilayer graphene oxide into the solution described in step S4, and ultrasonically dispersing for 60 min;

[0049] S6. Evaporate the solution prepared in step S5 to dryness to obtain a mixture of graphene and metal salt;

[0050] S7. The mixture prepared in s...

Embodiment 2

[0056] A preparation method of a composite wave-absorbing material intercalated with magnetic particles and porous graphene, the specific steps are as follows:

[0057] S1. Dissolve the multi-layer graphene oxide into distilled water, and then expand the graphene layer under the action of microwave field, and the microwave time is 50min;

[0058] S2, drying the expanded multilayer graphene oxide, the drying temperature is 70°C, and the drying time is 80min;

[0059] S3, configuring a solvent containing distilled water, ethanol and tetrahydrofuran;

[0060] S4, adding potassium hydroxide, cobalt acetylacetonate, iron acetylacetonate, nickel acetylacetonate to the solvent prepared in step S3;

[0061] S5, adding the multilayer graphene oxide in step S2 to the solution described in step S4, and ultrasonically dispersing for 100 min;

[0062] S6. Evaporate the solution prepared in step S5 to dryness to obtain a mixture of graphene and metal salt;

[0063]S7. The mixture prepare...

Embodiment 3

[0069] A preparation method of a composite wave-absorbing material intercalated with magnetic particles and porous graphene, the specific steps are as follows:

[0070] S1. Dissolve the multilayer graphene oxide into distilled water, and then expand the graphene layer under the action of microwave field, and the microwave time is 100min;

[0071] S2, drying the expanded multilayer graphene oxide, the drying temperature is 80°C, and the drying time is 60min;

[0072] S3, configuring a solvent containing distilled water, ethanol and tetrahydrofuran;

[0073] S4, adding potassium hydroxide, cobalt acetylacetonate, iron acetylacetonate, nickel acetylacetonate to the solvent prepared in step S3;

[0074] S5, adding the multilayer graphene oxide in step S2 to the solution described in step S4, and ultrasonically dispersing for 150 min;

[0075] S6. Evaporate the solution prepared in step S5 to dryness to obtain a mixture of graphene and metal salt;

[0076] S7. The mixture prepar...

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Abstract

The invention discloses a preparation method of a composite wave absorbing material with magnetic particles intercalated with porous graphene. The preparation method comprises the following specific steps: S1, dissolving multilayered graphene oxide in distilled water, and then carrying out expanding of a graphene layer under the effect of a microwave field; S2, drying the expanded multilayered graphene oxide; S3, preparing a solvent which contains distilled water, ethanol and tetrahydrofuran; S4, adding potassium hydroxide, cobalt acetylacetonate, iron acetylacetonate and nickel acetylacetonate in the solvent prepared in step S3; S5, adding the multilayered graphene oxide in step S2 into the solution in step S4; S6, evaporating the solution prepared in step S5 to be dry; S7, treating a mixture prepared in step S6 at high temperature; and S8, cleaning the graphene obtained after high-temperature treatment in step S7 with distilled water, then drying the graphene, and finally preparing the composite material with the magnetic particles intercalated with the porous graphene. The wave absorbing material is high in high temperature resistance, light in weight and wide in wave absorbingband.

Description

technical field [0001] The invention belongs to the field of graphene production and processing, and in particular relates to a method for preparing a composite wave-absorbing material of magnetic particles intercalated with porous graphene. Background technique [0002] As a new type of carbon material, graphene can be used as a dielectric loss substrate in the field of microwave absorption due to its high dielectric constant and easy polarization relaxation properties of outer electrons. [0003] However, in the production process of the existing graphene, a single dielectric loss material affects its absorbing performance, affects the use performance of graphene, and causes certain inconvenience to people's use. Contents of the invention [0004] 1. Problems to be solved [0005] Aiming at the problem of poor wave-absorbing performance of existing graphene materials, the object of the present invention is to provide a preparation method of a composite wave-absorbing ma...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K3/00
CPCC09K3/00
Inventor 叶伟孙雷余进孙启龙高强季涛
Owner NANTONG UNIVERSITY