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Polyaniline/oxidized graphene/ferriferrous oxide absorbing material and preparation method

A technology of ferroferric oxide and wave-absorbing materials, which is applied in the field of preparation of new polyaniline/graphene oxide/ferric oxide composite materials, can solve the problems of less graphene oxide, reduce the density of absorbents, etc., and achieve surface energy Large, improved magnetic loss, low density effect

Inactive Publication Date: 2014-11-26
UNIV OF SCI & TECH BEIJING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, there are many reports on magnetic materials and conductive polymers as electromagnetic wave absorbers, but there are few reports on graphene oxide as absorbers, especially the composite preparation of polyaniline, graphene oxide and metal oxides with magnetic loss characteristics. The multi-component composite material can not only reduce the density of the absorbent, but also broaden the absorption frequency band and improve the absorption effect

Method used

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  • Polyaniline/oxidized graphene/ferriferrous oxide absorbing material and preparation method
  • Polyaniline/oxidized graphene/ferriferrous oxide absorbing material and preparation method
  • Polyaniline/oxidized graphene/ferriferrous oxide absorbing material and preparation method

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Effect test

Embodiment 1

[0021] A preparation of absorbing material

[0022] (1) Add 1g of natural flake graphite and 0.5g of sodium nitrate into 50mL of concentrated sulfuric acid, cool in an ice bath to 4°C, slowly add 5g of potassium permanganate, stir for 90min; then raise the temperature to 35°C and stir for 4h; slowly add 100mL Deionized water, stirred at 90°C for 2h, cooled to room temperature, added 10mL of hydrogen peroxide, washed by centrifugation and vacuum dried to obtain graphite oxide.

[0023] (2) 1.99gFeCl 2 4H 2 O and 4.06 g FeCl 3 ·H 2 O was added to 100mL deionized water, stirred to dissolve, 20mL ammonia water (28wt%) was quickly added to the above solution, stirred vigorously, and the water was kept at a constant temperature of 75°C. When the mixed solution changed from orange red to black, continue to stir for 15min. Centrifugal washing and vacuum drying to obtain ferric oxide.

[0024] (3) Weigh 1g of aniline and 0.5g of ferric oxide into 100mL containing 0.25MFeCl 3 and...

Embodiment 2

[0028] A preparation of absorbing material

[0029] (1) Add 1g of natural flake graphite and 0.5g of sodium nitrate into 50mL of concentrated sulfuric acid, cool in an ice bath to 4°C, slowly add 5g of potassium permanganate, stir for 90min; then raise the temperature to 35°C and stir for 4h; slowly add 100mL Deionized water, stirred at 90°C for 2h, cooled to room temperature, added 10mL of hydrogen peroxide, washed by centrifugation and vacuum dried to obtain graphite oxide.

[0030] (2) 1.99gFeCl 2 4H 2 O and 4.06 g FeCl 3 ·H 2 O was added to 100mL deionized water, stirred to dissolve, 20mL ammonia water (28wt%) was quickly added to the above solution, stirred vigorously, and the water was kept at a constant temperature of 75°C. When the mixed solution changed from orange red to black, continue to stir for 15min. Centrifugal washing and vacuum drying to obtain ferric oxide.

[0031] (3) Weigh 1g of aniline and 1g of ferric oxide into 100mL containing 0.25MFeCl 3 and 0....

Embodiment 3

[0035] A preparation of absorbing material

[0036] (1) Add 1g of natural flake graphite and 0.5g of sodium nitrate to 50mL of concentrated sulfuric acid, cool in an ice bath to 4°C, slowly add 5g of potassium permanganate, stir for 90min; then raise the temperature to 35°C and stir for 4h; slowly add 100mL Deionized water, stirred at 90°C for 2h, cooled to room temperature, added 10mL of hydrogen peroxide, washed by centrifugation and vacuum dried to obtain graphite oxide.

[0037] (2) 1.99gFeCl 2 4H 2 O and 4.06 g FeCl 3 ·H 2 O was added to 100mL deionized water, stirred to dissolve it, 20mL ammonia water (28wt%) was quickly added to the above solution, stirred vigorously, and the water was kept at a constant temperature of 75°C. When the mixed solution changed from orange red to black, continue to stir for 15min. Centrifugal washing and vacuum drying to obtain ferric oxide.

[0038] (3) Weigh 1g of aniline and 1.5g of ferric oxide into 100mL containing 0.25MFeCl 3 and...

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Abstract

The invention belongs to the field of electromagnetic wave absorbing material preparation and relates to a polyaniline / oxidized graphene / ferriferrous oxide composite material and its preparation method. The preparation method comprises the following steps: (1) preparing graphite oxide; (2) preparing ferriferrous oxide nanoparticles; (3) preparing a polyaniline / oxidized graphene / ferriferrous oxide ternary complex; and (4) weighing the polyaniline / oxidized graphene / ferriferrous oxide ternary complex and paraffin, and uniformly mixing to obtain the polyaniline / oxidized graphene / ferriferrous oxide absorbing material. The material provided by the invention has characteristics of low cost, simple preparation technology, strong electromagnetic wave absorbing capability, wide absorption band, low density and the like, has good electromagnetic property, and has important application value in the field of microwave absorption and electromagnetic shielding.

Description

Technical field: [0001] The invention belongs to the field of preparation of electromagnetic wave absorbing materials, in particular to a preparation method of a new polyaniline / graphene oxide / ferric oxide composite material with wave absorbing performance. technical background: [0002] With the development of modern science and technology and the progress of industrial civilization, the application of various electronic instruments and equipment is increasing, producing more and more electromagnetic radiation, and the electromagnetic interference is becoming more and more serious. At the same time, electromagnetic pollution has penetrated into all aspects of production and life, seriously affecting people's health. Therefore, how to effectively prevent and eliminate electromagnetic interference has become an important topic in the scientific and technological circles. [0003] Absorbing materials need to meet the characteristics of thin thickness, low density, wide freque...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G73/02C08L79/02C08K9/02C08K3/04C08K7/18C08K3/22C08K5/01
Inventor 范慧俐赵敬
Owner UNIV OF SCI & TECH BEIJING
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