CN102702515A - Graphene and polyaniline nanocomposite capable of absorbing high frequency electromagnetic wave as well as preparation method and application thereof - Google Patents
Graphene and polyaniline nanocomposite capable of absorbing high frequency electromagnetic wave as well as preparation method and application thereof Download PDFInfo
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- CN102702515A CN102702515A CN2012101688626A CN201210168862A CN102702515A CN 102702515 A CN102702515 A CN 102702515A CN 2012101688626 A CN2012101688626 A CN 2012101688626A CN 201210168862 A CN201210168862 A CN 201210168862A CN 102702515 A CN102702515 A CN 102702515A
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Abstract
The invention provides a graphene and polyaniline nanocomposite capable of absorbing high frequency electromagnetic wave as well as a preparation method and application thereof. The method comprises the following steps of: (1) adding 0.015 g of grapheme into 100 ml of hydrochloric acid solution in 1 mol/l, and adequately stirring under minus 5 DEG C after ultrasonic dispersion; (2) respectively dropping 0.1-0.4 ml of aniline and 0.125-0.5 g of ammonium persulfate into 100 ml of hydrochloric acid solution in 1 mol/l, mixing the two solutions together after dissolution; and pouring the mixture into the solution obtained by the step (1) for stirring when the temperature of the mixture drops to minus 5 DEG C; and (3) washing the obtained precipitate with ethanol and deionized water and drying for 24 hours under the vacuum environment of 40 DEG C to obtain graphene and polyaniline nanocomposite capable of absorbing high frequency electromagnetic wave. The material is used for preparing coating capable of absorbing the electromagnetic wave. The material has the advantages of good electromagnetic wave absorption, simplicity in operation, and wide range of application and is suitable for industrial production.
Description
Technical field
The present invention relates to a kind of nano composite material, specifically a kind of Graphene and polyaniline nano-composite material.The present invention also relates to the preparation method of a kind of Graphene and polyaniline nano-composite material.The invention still further relates to the coating of a kind of Graphene and polyaniline nano-composite material.
Background technology
Along with development of electronic technology in recent years, electromagnetic wave absorbent material is along with the electromagnetic interference problem that highlights has day by day received extensive concern both domestic and external.Therefore prepare and have the problem that electromagnetic wave absorbent material efficiently becomes numerous investigators.Metal magnetic nano particle such as iron, cobalt, nickel etc. have the bigger specific magnetising moment and " the Snooker limit " in high-frequency range.Therefore, they can the absorbing high-frequency hertzian wave.But the electricity of these metallic particles is led bigger, under the effect in outfield, can produce eddy-current loss, thereby its absorption of electromagnetic wave performance is significantly descended.
Graphene is a kind of mono-layer graphite with fabulous chemistry and physical property, and electronic mobility has the superelevation specific conductivity at normal temperatures up to 15000 square centimeters/volt/seconds, has received large quantities of scholars' concern.Yet so superior electrical characteristic are because the impedance matching mechanism of Graphene itself can not be used for preparing electromagnetic wave absorbent material.Therefore, how to prepare have light weight, the graphene nano matrix material of strong electromagnetic wave absorption characteristic becomes one of research emphasis.
Summary of the invention
The object of the present invention is to provide a kind of electromagnetic Graphene of absorbing high-frequency and polyaniline nano-composite material that frequency electromagnetic waves is had strong absorption characteristic.The object of the invention also is to provide the method for making of a kind of electromagnetic Graphene of absorbing high-frequency simple to operate, that be suitable for suitability for industrialized production and polyaniline nano-composite material.The present invention also aims to provide a kind of coating that contains electromagnetic Graphene of absorbing high-frequency and polyaniline nano-composite material.
The objective of the invention is to realize like this:
Electromagnetic Graphene of absorbing high-frequency of the present invention and polyaniline nano-composite material make as follows: (1) adds 0.015 gram Graphene in the hydrochloric acid soln of 100 milliliter of 1 mol, treats under subzero 5 degrees centigrade, fully to stir behind the ultra-sonic dispersion; (2) 0.1-0.4 milliliter aniline and 0.125-0.5 gram ammonium persulphate are splashed into respectively in the hydrochloric acid soln of 100 milliliter of 1 mol; After waiting to dissolve two solution are mixed, when the temperature of mixed solution drops to subzero 5 degrees centigrade, be poured into to stir in the solution that step (1) obtains and obtain throw out; (3) with the throw out that is obtained with ethanol and washed with de-ionized water, and under vacuum environment 40 degrees centigrade of dryings 24 hours.
The method for making of electromagnetic Graphene of absorbing high-frequency of the present invention and polyaniline nano-composite material comprises the steps:
(1) 0.015 gram Graphene is added in the hydrochloric acid soln of 100 milliliter of 1 mol, treat under subzero 5 degrees centigrade, fully to stir behind the ultra-sonic dispersion;
(2) 0.1-0.4 milliliter aniline and 0.125-0.5 gram ammonium persulphate are splashed into respectively in the hydrochloric acid soln of 100 milliliter of 1 mol; After waiting to dissolve two solution are mixed, when the temperature of mixed solution drops to subzero 5 degrees centigrade, be poured into to stir in the solution that step (1) obtains and obtain throw out;
(3) with the throw out that is obtained with ethanol and washed with de-ionized water, and under vacuum environment 40 degrees centigrade of dryings 24 hours.
The method that the electromagnetic Graphene of absorbing high-frequency and the polyaniline nano-composite material of invention is used to prepare coating is: with weight ratio is that 20% the electromagnetic Graphene of absorbing high-frequency mixes with paraffin with polyaniline nano-composite material, and electromagnetic coating is absorbed.
Prepare 20wt% graphene/polyaniline-paraffin composite film material microwave absorbing coating with graphene/polyaniline nano composite material of the present invention, utilize its electromagnetic parameter of T/R coaxial transmission line test.Utilize electromagnetic transmission lineation opinion to calculate the reflection of electromagnetic wave rate of different film thicknesses then; In microwave absorbing coating thickness is 2-4 millimeter scope; Absorption intensity has all reached-20dB; Range of frequency is up to 10.6GHz, and when microwave absorbing coating thickness is merely 2.5 millimeters, and absorption intensity reaches-below the 45.1dB.
Of the present invention another be that the required material proportion of preparation film is very little with the different advantage of microwave absorbing material in the past; Graphene polyaniline nano-composite material ratio is merely 20wt% in the thin-film material; So materials still less, the thin-film material material of making is lighter, more helps suitability for industrialized production.In addition, this absorbing material has successfully been realized Graphene and organic application of synthesizing in absorption of electromagnetic wave, has expanded its Application Areas.
Method of the present invention successfully realized Graphene and organic compound, simple to operate, be widely used, be suitable for suitability for industrialized production.
Description of drawings
Fig. 1 (a) is the XRD figure spectrum of electromagnetic Graphene of absorbing high-frequency and polyaniline nano-composite material; Fig. 1 (b) is the scintigram of electromagnetic Graphene of absorbing high-frequency and polyaniline nano-composite material.
Fig. 2 contains electromagnetic Graphene of 20wt% absorbing high-frequency and the reflection of electromagnetic wave rate of polyaniline nano-composite material-paraffin mixture under different thickness.
Embodiment
For example the present invention is done in more detail below and describes:
Embodiment 1:
(1) 0.015 gram Graphene is added in the hydrochloric acid soln of 100 milliliter of 1 mol, treat under subzero 5 degrees centigrade, fully to stir behind the ultra-sonic dispersion;
(2) 0.1 milliliter of aniline and 0.125 gram ammonium persulphate are splashed into respectively in the hydrochloric acid soln of 100 milliliter of 1 mol; After waiting to dissolve two solution are mixed, when the temperature of mixed solution drops to subzero 5 degrees centigrade, be poured in the solution that has prepared in (1) and stir.
(3) with the throw out that is obtained with ethanol and washed with de-ionized water, and under vacuum environment 40 degrees centigrade of dryings 24 hours.Make electromagnetic Graphene of absorbing high-frequency and polyaniline nano-composite material.
Embodiment 2:
(1) at first, 0.015 gram Graphene is added in the hydrochloric acid soln of 100 milliliter of 1 mol, treat under subzero 5 degrees centigrade, fully to stir behind the ultra-sonic dispersion;
(2) secondly; 0.2 milliliter of aniline and 0.25 gram ammonium persulphate are splashed into respectively in the hydrochloric acid soln of 100 milliliter of 1 mol; After waiting to dissolve two solution are mixed, when the temperature of mixed solution drops to subzero 5 degrees centigrade, be poured in the solution that has prepared in (1) and stir.
(3) last, with the throw out that is obtained with ethanol and washed with de-ionized water, and under vacuum environment 40 degrees centigrade of dryings 24 hours.Make electromagnetic Graphene of absorbing high-frequency and polyaniline nano-composite material.
Embodiment 3:
(1) at first, 0.015 gram Graphene is added in the hydrochloric acid soln of 100 milliliter of 1 mol, treat under subzero 5 degrees centigrade, fully to stir behind the ultra-sonic dispersion;
(2) secondly; 0.4 milliliter of aniline and 0.5 gram ammonium persulphate are splashed into respectively in the hydrochloric acid soln of 100 milliliter of 1 mol; After waiting to dissolve two solution are mixed, when the temperature of mixed solution drops to subzero 5 degrees centigrade, be poured in the solution that has prepared in (1) and stir.
(3) last, with the throw out that is obtained with ethanol and washed with de-ionized water, and under vacuum environment 40 degrees centigrade of dryings 24 hours.Make electromagnetic Graphene of absorbing high-frequency and polyaniline nano-composite material.
The electromagnetic Graphene of the resulting absorbing high-frequency of the foregoing description is mixed with paraffin with polyaniline nano-composite material, and electromagnetic coating is absorbed.Wherein electromagnetic Graphene of absorbing high-frequency and polyaniline nano-composite material account for 20% (weight ratio).
Claims (3)
1. electromagnetic Graphene of absorbing high-frequency and polyaniline nano-composite material; It is characterized in that it makes as follows: (1) adds 0.015 gram Graphene in the hydrochloric acid soln of 100 milliliter of 1 mol, treats under subzero 5 degrees centigrade, fully to stir behind the ultra-sonic dispersion; (2) 0.1-0.4 milliliter aniline and 0.125-0.5 gram ammonium persulphate are splashed into respectively in the hydrochloric acid soln of 100 milliliter of 1 mol; After waiting to dissolve two solution are mixed, when the temperature of mixed solution drops to subzero 5 degrees centigrade, be poured into to stir in the solution that step (1) obtains and obtain throw out; (3) with the throw out that is obtained with ethanol and washed with de-ionized water, and under vacuum environment 40 degrees centigrade of dryings 24 hours.
2. the method for making of electromagnetic Graphene of absorbing high-frequency and polyaniline nano-composite material is characterized in that comprising the steps:
(1) 0.015 gram Graphene is added in the hydrochloric acid soln of 100 milliliter of 1 mol, treat under subzero 5 degrees centigrade, fully to stir behind the ultra-sonic dispersion;
(2) 0.1-0.4 milliliter aniline and 0.125-0.5 gram ammonium persulphate are splashed into respectively in the hydrochloric acid soln of 100 milliliter of 1 mol; After waiting to dissolve two solution are mixed, when the temperature of mixed solution drops to subzero 5 degrees centigrade, be poured into to stir in the solution that step (1) obtains and obtain throw out;
(3) with the throw out that is obtained with ethanol and washed with de-ionized water, and under vacuum environment 40 degrees centigrade of dryings 24 hours.
3. one kind contains the coating that right requires electromagnetic Graphene of 1 said absorbing high-frequency and polyaniline nano-composite material; It is characterized in that: with weight ratio is that 20% the electromagnetic Graphene of absorbing high-frequency mixes with paraffin with polyaniline nano-composite material, and electromagnetic coating is absorbed.
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| CN103172856A (en) * | 2013-04-09 | 2013-06-26 | 江西师范大学 | Synthetic method of graphene-based three-dimensional polyaniline array nanocomposite |
| CN103554908A (en) * | 2013-11-13 | 2014-02-05 | 北京科技大学 | Graphene/polyaniline/cobalt composite wave-absorbing material and preparation method |
| CN104211959A (en) * | 2014-09-20 | 2014-12-17 | 桂林理工大学 | Preparation method of network polyaniline conducting active material |
| CN105778740A (en) * | 2014-12-16 | 2016-07-20 | 中国科学院宁波材料技术与工程研究所 | Graphene conductive coating material, preparation method therefor and application of graphene conductive coating material |
| CN105802452A (en) * | 2014-12-30 | 2016-07-27 | 中国科学院宁波材料技术与工程研究所 | Graphene composite coating, graphene composite paint and preparation method thereof |
| CN105802441A (en) * | 2014-12-30 | 2016-07-27 | 中国科学院宁波材料技术与工程研究所 | Water-borne graphene composite coating, and water-borne graphene composite paint and preparation method thereof |
| CN107072128A (en) * | 2016-12-07 | 2017-08-18 | 中国航空工业集团公司北京航空材料研究院 | Wide band electromagnetic wave absorbing material based on polyaniline graphene three-dimensional porous structure |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103172856A (en) * | 2013-04-09 | 2013-06-26 | 江西师范大学 | Synthetic method of graphene-based three-dimensional polyaniline array nanocomposite |
| CN103172856B (en) * | 2013-04-09 | 2015-12-02 | 江西师范大学 | Synthetic method of graphene-based three-dimensional polyaniline array nanocomposite |
| CN103554908A (en) * | 2013-11-13 | 2014-02-05 | 北京科技大学 | Graphene/polyaniline/cobalt composite wave-absorbing material and preparation method |
| CN103554908B (en) * | 2013-11-13 | 2015-10-28 | 北京科技大学 | A kind of graphene/polyaniline/cobalt composite wave-suction material and preparation method |
| CN104211959A (en) * | 2014-09-20 | 2014-12-17 | 桂林理工大学 | Preparation method of network polyaniline conducting active material |
| CN105778740A (en) * | 2014-12-16 | 2016-07-20 | 中国科学院宁波材料技术与工程研究所 | Graphene conductive coating material, preparation method therefor and application of graphene conductive coating material |
| CN105778740B (en) * | 2014-12-16 | 2018-11-06 | 中国科学院宁波材料技术与工程研究所 | Graphene conductive coating, preparation method and application |
| CN105802452A (en) * | 2014-12-30 | 2016-07-27 | 中国科学院宁波材料技术与工程研究所 | Graphene composite coating, graphene composite paint and preparation method thereof |
| CN105802441A (en) * | 2014-12-30 | 2016-07-27 | 中国科学院宁波材料技术与工程研究所 | Water-borne graphene composite coating, and water-borne graphene composite paint and preparation method thereof |
| CN107072128A (en) * | 2016-12-07 | 2017-08-18 | 中国航空工业集团公司北京航空材料研究院 | Wide band electromagnetic wave absorbing material based on polyaniline graphene three-dimensional porous structure |
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Application publication date: 20121003 |