PPy/Fe3O4/reduced graphene oxide ternary composite wave-absorbing material and preparation method thereof

A composite wave absorbing material and technology of wave absorbing material, applied in the field of wave absorbing material, can solve the problems of poor wave absorbing performance, complicated preparation process, long preparation time, etc., and achieve light weight, simple preparation process and high wave absorption efficiency Effect

Inactive Publication Date: 2016-03-30
NANJING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This preparation method has the following disadvantages: it needs to add surfactant, needs high temperature calcination, needs to use hydrogen for reduction, the preparation time is long, the preparation process is complicated, time-consuming and energy-consuming, and the wave-absorbing performance is not good
This preparation method has the following disadvantages: the preparation time is long, the preparation process is complicated, time-consuming and energy-consuming, and the microwave-absorbing performance is not good

Method used

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  • PPy/Fe3O4/reduced graphene oxide ternary composite wave-absorbing material and preparation method thereof
  • PPy/Fe3O4/reduced graphene oxide ternary composite wave-absorbing material and preparation method thereof
  • PPy/Fe3O4/reduced graphene oxide ternary composite wave-absorbing material and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] According to the mass ratio of graphite oxide and ferric chloride hexahydrate is 1:10.8, the mass ratio of graphite oxide and ethylene glycol is 1:1115, the molar ratio of graphite oxide and anhydrous sodium acetate is 1:72, weigh 0.05g graphite oxide and 0.54g of ferric chloride hexahydrate are dispersed in ethylene glycol by ultrasonic to form a mixed dispersion, then add 3.6g of anhydrous sodium acetate, stir to make it fully dissolve to form a mixed solution, transfer the mixed solution to a reaction kettle, and place it at 200 ℃ oven reaction for 10 h, after cooling to room temperature, the precipitate was washed several times with ethanol and deionized water, and then the obtained product was dried in a vacuum oven to obtain Fe 3 o 4 / Reduced graphene oxide composites. Press Fe 3 o 4 The mass ratio of / reduced graphene oxide solid powder to deionized water is 1:1429, Fe 3 o 4 The mass ratio of / reduced graphene oxide solid powder and sodium dodecylbenzenesulfo...

Embodiment 2

[0024] According to the mass ratio of graphite oxide and ferric chloride hexahydrate is 1:5.4, the mass ratio of graphite oxide and ethylene glycol is 1:1115, the molar ratio of graphite oxide and anhydrous sodium acetate is 1:60, weigh 0.05g graphite oxide and 0.27g of ferric chloride hexahydrate were dispersed in ethylene glycol by ultrasonic to form a mixed dispersion liquid, and then 3.0 g of anhydrous sodium acetate was added and stirred to fully dissolve to form a mixed liquid. Transfer the mixed solution into a reaction kettle, place it in an oven at 180°C for 12 hours, cool to room temperature, wash the precipitate with ethanol and deionized water several times, and then dry the obtained product in a vacuum oven to obtain Fe 3 o 4 / Reduced graphene oxide composites. Press Fe 3 o 4 The mass ratio of / reduced graphene oxide solid powder to deionized water is 1:1286, Fe 3 o 4 The mass ratio of / reduced graphene oxide solid powder and sodium dodecylbenzenesulfonate is ...

Embodiment 3

[0026] According to the mass ratio of graphite oxide and ferric chloride hexahydrate is 1:16.2, the mass ratio of graphite oxide and ethylene glycol is 1:1115, the molar ratio of graphite oxide and anhydrous sodium acetate is 1:80, weigh 0.05g graphite oxide and 0.81g of ferric chloride hexahydrate were dispersed in ethylene glycol by ultrasonic to form a mixed dispersion liquid, and then 4.0g of anhydrous sodium acetate was added and stirred to fully dissolve to form a mixed liquid. Transfer the mixed solution into a reaction kettle, put it in an oven at 220°C for 8 hours, and wash the precipitate with ethanol and deionized water several times after cooling to room temperature, and then dry the obtained product in a vacuum oven to obtain Fe 3 o 4 / Reduced graphene oxide composites. Press Fe 3 o 4 The mass ratio of / reduced graphene oxide solid powder to deionized water is 1:1571, Fe 3 o 4 The mass ratio of / reduced graphene oxide solid powder and sodium dodecylbenzenesulf...

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Abstract

The invention discloses a PPy / Fe3O4 / reduced graphene oxide ternary composite wave-absorbing material and a preparation method thereof. Graphite oxide and ferric chloride hexahydrate are used as a precursor, and an Fe3O4 / reduced graphene oxide composite material is prepared through a solvothermal reaction. Then, the Fe3O4 / reducted graphene oxide is dispersed in deionized water, a pyrrole monomer and an oxidizing agent are added, and a PPy / Fe3O4 / reduced graphene oxide ternary composite material of a "sandwich" structure is prepared by using a wet chemical method. The preparation method is high in efficiency, simple in preparation process and low in cost; and the prepared composite wave-absorbing material has the characteristics of high absorption of electromagnetic waves, wide absorption band and low density and the like, has good electromagnetic properties and stability, and has a significant application value in the fields of microwave absorption, electromagnetic shielding.

Description

technical field [0001] The present invention relates to a kind of PPy / Fe 3 o 4 A reduced graphene oxide ternary composite wave-absorbing material and a preparation method thereof belong to the technical field of wave-absorbing materials. Background technique [0002] Absorbing materials refer to a class of functional materials that can reduce the reflection and scattering of electromagnetic waves through their own absorption and attenuation, and dissipate electromagnetic waves. As one of the important materials used in weapons and equipment, wave-absorbing materials can greatly reduce the radar cross-section of aircraft, thereby improving its survivability and defense capabilities and overall combat performance. The research on stealth materials has always been an important topic at the forefront of national defense science and technology. The development of target detection technology and electronic countermeasure technology has put forward higher requirements for the wav...

Claims

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Application Information

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IPC IPC(8): H01Q17/00
Inventor 姜炜刘功总王彦平钟素婷彭铮
Owner NANJING UNIV OF SCI & TECH
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