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Conductive polyaniline nanocomposite microwave absorbing material production method

A technology of microwave absorbing material and conductive polyaniline, applied in the field of functional materials, can solve the problems of weak absorption strength, narrow frequency band, high density, etc., and achieve the effects of simple operation, wide frequency band and high conductivity

Active Publication Date: 2016-05-04
ANHUI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these traditional microwave absorbing materials have disadvantages such as high density, narrow frequency band, and weak absorption strength.

Method used

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  • Conductive polyaniline nanocomposite microwave absorbing material production method
  • Conductive polyaniline nanocomposite microwave absorbing material production method
  • Conductive polyaniline nanocomposite microwave absorbing material production method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] The specific operation steps for preparing conductive polyaniline nanocomposite microwave absorbing material are as follows:

[0036] (1) Preparation of manganese dioxide and ferric oxide composite materials

[0037]Disperse 0.05406g of manganese dioxide into 70mL of the mixed solution and ultrasonicate for 30min; then add 0.5406g of ferric chloride hexahydrate to dissolve evenly; add 0.24g of sodium hydroxide and stir evenly, transfer the above mixed solution into a hydrothermal kettle, Reaction at 180°C for 12 hours; vacuum drying at 60°C for 12 hours to obtain a composite material of manganese dioxide and ferric oxide;

[0038] The 70mL mixed solution is made by mixing 20mL ethylene glycol and 50mL deionized water;

[0039] (2) Preparation of conductive polyaniline nanocomposite microwave absorbing materials

[0040] Add 0.0255g of the composite material into 70mL of deionized water, ultrasonically disperse for 30min, add 1.9233g of dodecylbenzenesulfonic acid, sti...

Embodiment 2

[0045] The specific operation steps for preparing conductive polyaniline nanocomposite microwave absorbing material are as follows:

[0046] (1) Preparation of manganese dioxide and ferric oxide composite materials

[0047] Disperse 0.05406g of manganese dioxide into 70mL of the mixed solution and ultrasonicate for 30min; then add 0.5406g of ferric chloride hexahydrate to dissolve evenly; add 0.24g of sodium hydroxide and stir evenly, transfer the above mixed solution into a hydrothermal kettle, Reaction at 180°C for 12 hours; vacuum drying at 60°C for 12 hours to obtain a composite material of manganese dioxide and ferric oxide;

[0048] The 70mL mixed solution is made by mixing 20mL ethylene glycol and 50mL deionized water;

[0049] (2) Preparation of conductive polyaniline nanocomposite microwave absorbing materials

[0050] Add 0.0511g of the composite material into 70mL of deionized water, ultrasonically disperse for 30min, add 1.9233g of dodecylbenzenesulfonic acid, st...

Embodiment 3

[0055] The specific operation steps for preparing conductive polyaniline nanocomposite microwave absorbing material are as follows:

[0056] (1) Preparation of manganese dioxide and ferric oxide composite materials

[0057] Disperse 0.05406g of manganese dioxide into 70mL of the mixed solution and ultrasonicate for 30min. Then add 0.5406g of ferric chloride hexahydrate, dissolve evenly; add 0.24g of sodium hydroxide, stir evenly, transfer the above mixed solution into a hydrothermal kettle, and react for 20h at 160°C; Dry for 12 hours to obtain a composite material of manganese dioxide and ferric oxide;

[0058] The 70mL mixed solution is made by mixing 30mL ethylene glycol and 40mL deionized water;

[0059] (2) Preparation of conductive polyaniline nanocomposite microwave absorbing materials

[0060] Add 0.0766g of the composite material into 70mL of deionized water, ultrasonically disperse for 30min, add 1.4532g of dodecylbenzenesulfonic acid, stir mechanically for 10min,...

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Abstract

The present invention relates to a conductive polyaniline nanocomposite microwave absorbing material production method comprising the following operation steps: 1. a two-step hydrothermal method is used to prepare a manganese dioxide and ferric oxide composite material; 2. dodecylbenzene sulfonic acid is used as a dopant, ammonium persulfate is used as an oxidizing agent, and an emulsion polymerization method is used for preparing a conductive polyaniline nanocomposite microwave absorbing material. The conductive polyaniline nanocomposite microwave absorbing material is in a sheet structure, the manganese dioxide and ferric oxide composite material is uniformly distributed on the surface, the conductive polyaniline nanocomposite microwave absorbing material shows best microwave absorption properties when coating thickness is 2.5 mm, the best reflection loss in 8.4-11.84 GHz frequency range is-43.22 to-10 dB, and more than 90% of electromagnetic wave is absorbed. The method is easy to operate, and the reaction process is easy to control, and environment friendly.

Description

technical field [0001] The invention belongs to the technical field of functional materials, and in particular relates to a preparation method of a microwave absorbing material. Background technique [0002] With the rapid development of information technology, the wide application of high-frequency equipment, and the emergence of electromagnetic radiation problems, people are concerned about the impact on military affairs, commerce, human body, and industry. Microwave absorbing materials have become a hot research topic. Microwave absorbing material refers to a functional material that absorbs dissipated electromagnetic waves through impedance matching and attenuation matching. [0003] Traditional microwave absorbing materials need to meet the strong absorption of electromagnetic waves. New microwave absorbing materials must meet the requirements of "thin, light, wide, and strong" on the basis of multi-band absorption and good thermal stability. Microwave absorbing materi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G73/02C08K3/22C08K5/05
CPCC08G73/0266C08K3/22C08K5/05C08K2003/2262C08K2003/2272C08K2201/011C08K2201/014
Inventor 邢宏龙朱燕婷刘振峰申子瑶孙翔
Owner ANHUI UNIV OF SCI & TECH
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