CN106550591A - A kind of absorbing material of polypyrrole for substrate - Google Patents
A kind of absorbing material of polypyrrole for substrate Download PDFInfo
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- CN106550591A CN106550591A CN201610989003.1A CN201610989003A CN106550591A CN 106550591 A CN106550591 A CN 106550591A CN 201610989003 A CN201610989003 A CN 201610989003A CN 106550591 A CN106550591 A CN 106550591A
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- powder
- graphene
- polypyrrole
- carbon black
- ferroso
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K9/00—Screening of apparatus or components against electric or magnetic fields
- H05K9/0073—Shielding materials
- H05K9/0081—Electromagnetic shielding materials, e.g. EMI, RFI shielding
- H05K9/0088—Electromagnetic shielding materials, e.g. EMI, RFI shielding comprising a plurality of shielding layers; combining different shielding material structure
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B25/00—Layered products comprising a layer of natural or synthetic rubber
- B32B25/04—Layered products comprising a layer of natural or synthetic rubber comprising rubber as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B25/08—Layered products comprising a layer of natural or synthetic rubber comprising rubber as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B25/00—Layered products comprising a layer of natural or synthetic rubber
- B32B25/16—Layered products comprising a layer of natural or synthetic rubber comprising polydienes homopolymers or poly-halodienes homopolymers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/28—Layered products comprising a layer of synthetic resin comprising synthetic resins not wholly covered by any one of the sub-groups B32B27/30 - B32B27/42
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/02—Elements
- C08K3/04—Carbon
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/02—Elements
- C08K3/08—Metals
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L11/00—Compositions of homopolymers or copolymers of chloroprene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/02—Elements
- C08K3/08—Metals
- C08K2003/0856—Iron
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2265—Oxides; Hydroxides of metals of iron
- C08K2003/2275—Ferroso-ferric oxide (Fe3O4)
Abstract
The invention discloses a kind of absorbing material of polypyrrole for substrate, which is made up of impedance matching layer, depletion layer and reflecting layer from top to bottom, impedance matching layer is distributed in polypyrrole and is formed by Graphene/ferroso-ferric oxide powder body, depletion layer is distributed in neoprene for hydroxy iron powder and is formed, reflecting layer is distributed in neoprene and is formed by 5 20wt% quartz/carbon black composite material, and the impedance matching layer contains 2 5% Graphene/ferroso-ferric oxide powder body.Absorbing material of the present invention, after impedance matching layer is replaced with polypyrrole, it is Graphene/ferroso-ferric oxide powder body to inhale ripple main material, and, when thickness is 0.2mm, more than 42.3dB, performance is far superior to using neoprene and polyaniline for its absorption maximum for which.
Description
Technical field
The present invention relates to new material technology field, more particularly to the absorbing material that a kind of polypyrrole is substrate.
The present invention is earlier application " a kind of modified ferroferric oxide wave absorbing material of Graphene ", " a kind of Graphene is modified
Barium metatitanate. absorbing material " and the absorbing material of substrate " a kind of improve " improvement invention.
Background technology
With the development of modern science and technology, impact of the electromagenetic wave radiation to environment increasingly increases.Airport, machine flight because
Electromagnetic Interference cannot be taken off and overdue；The normal work of various electronic instrument for diagnosing and curing diseases devices can often be disturbed in hospital, mobile phone.Cause
This, administers electromagnetic pollution, finds a kind of material that can be kept out and weaken electromagenetic wave radiation --- absorbing material, it has also become material supply section
The big problem learned.
Absorbing material refer to can absorb, decaying projects the electromagnetic wave energy of material surface, and by electromagnetic energy by material
The dielectric loss in portion is converted into into the class functional material that the energy dissipation of the other forms such as heat energy is fallen.Absorbing material is by absorbing
Agent, adhesive and various auxiliary agents composition, the electromagnetic performance of wherein absorbent determines the quality of microwave absorbing coating performance, in cell material
Misusing for key is played in material.
Research confirms that ferrite wave-absorbing material performance is optimal, and it has, and absorption frequency range is high, absorbance is high, matching thickness is thin
The features such as.This materials application is can absorb in electronic equipment the electromagnetic radiation of leakage, the mesh for eliminating electromagnetic interference can be reached
's.According to the rule that electromagnetic wave is propagated from the high magnetic conductance direction of low magnetic steering in media as well, using high magnetic conductivity ferrite guiding electricity
Magnetic wave, by resonance, the emittance of a large amount of electromagnetic wave absorptions, then by coupling the energy conversion of electromagnetic wave into heat energy.
With the development of modern crafts, the requirement more and more higher to absorbing material, it is desirable to while wave-absorbing effect is preferable,
Possess preferable physical and mechanical propertiess, preferable heat-resisting quantity and working service simple etc..
The content of the invention
It is an object of the invention to propose the absorbing material that a kind of polypyrrole is substrate, enable to absorbing material performance and dash forward
Go out.
A kind of earlier application " Graphene modified Barium metatitanate. absorbing material " of inventor and " a kind of Graphene be modified four
The impedance matching layer substrate difference neoprene and polyphenyl of Fe 3 O absorbing material " and " a kind of absorbing material for improving substrate "
Amine.Inventor is optimized to the absorbing material, and substrate is optimized, and seeks the absorbing material of higher performance, to
Improve absorbing property.
It is that, up to this purpose, the present invention is employed the following technical solutions：
A kind of absorbing material of polypyrrole for substrate, which is made up of impedance matching layer, depletion layer and reflecting layer from top to bottom,
Impedance matching layer is distributed in polypyrrole and is formed by Graphene/ferroso-ferric oxide powder body, and depletion layer is distributed to chlorine for hydroxy iron powder
Formed in buna, reflecting layer is distributed in neoprene and is formed by 5-20wt% quartz/carbon black composite material, the impedance
The Graphene containing 2-5%/ferroso-ferric oxide powder body with layer.
White carbon black belongs to a kind of conductive filler, therefore the quartz/carbon black composite material of the present invention, and which is to shielding electromagnetic waves master
Depend on the reflection to incident electromagnetic wave.When quartz/carbon black composite material surface of the electromagnetic wave incident to the present invention,
There is serious polarization in its material internal, make the concussion of electromagnetic field that vortex is formed in material internal conductive network, turn electromagnetic energy
Turn to heat energy and consume.Increase when content of carbon black forms conductive network number in material internal, the electric conductivity of material strengthens,
So that electromagnetic wave strengthens in the reflecting properties of material surface, the shielding propertiess of material also strengthen therewith.
Due to the high conductivity and tunnel conduction effect of white carbon black, little white carbon black addition is typically only needed to, it is possible to shape
Into relatively advanced conductive network, can ensure that matrix material has good mechanical property after mixing with matrix material,
Therefore, in the quartz/carbon black composite material of the present invention, the volumn concentration of white carbon black is 1-15vol%.
The preparation method of the quartz/carbon black composite material of the present invention is as follows：
(1) silica flour and white carbon black are put into into ball mill proportionally, ball milling 4-6 hours obtain powder；
(2) add and account for the waterglass of powder quality 20-30wt%, it is 8- to add and account for the concentration of powder quality 20-30wt
The polyvinyl alcohol of 12wt%, it is after being uniformly mixed, compressing；
(3) moulded products that the molding is obtained are heated to into 180-220 DEG C, constant temperature at least 3 hours；
(4) profiled member after heat treatment is ground into into powder, obtains the quartz/carbon black composite material.
Polypyrrole of the present invention forms matrix, it is necessary to is used in combination and could cause with Graphene/ferroso-ferric oxide powder body
Combination property is improved.Inventor attempts at identical conditions, and Graphene/ferroso-ferric oxide powder body is replaced with Graphene/titanium
Sour barium powder body, but its hydraulic performance decline, so the matrix of the present invention replaces neoprene and polyaniline, the lifting of its performance is not must
Right, but it is different according to different suction ripple main materials.
Preferably, the Graphene/ferroso-ferric oxide powder preparation method is as follows：
(1), under condition of ice bath, under mechanical agitation, crystalline graphite powder is added in 98% concentrated sulphuric acid, add and account for
The sodium nitrate of graphite powder 50-80wt%, and to account for and react 30-120min under the potassium permanganate of 2-4 times of weight of graphite powder, ice bath；
(2) 30-40 DEG C of constant temperature 4-5h is heated to, deionized water and hydrogen peroxide is added, 1-3h is stirred, 5% concentration is added
HCl centrifuge washings are until sulfate radical-free ion, obtains graphene oxide after being dried；
(3) described graphene oxide is distributed in ethanol solution, ultrasonic disperse obtains graphene oxide colloid
Solution；
(4) the graphene oxide colloid solution is heated to into 65-75 DEG C, stirring is lower to add mass concentration to be 70-85%
Hydrazine hydrate, reaction 0.5-2 hours after, according to Graphene:Ferroso-ferric oxide mass ratio is 2:1～1:2 ratio, adds four oxygen
Change three iron powders, mix homogeneously；
(5) centrifugation wash, vacuum drying obtains Graphene/ferroso-ferric oxide powder body.
The present invention is combined by specific recipe ingredient, devise impedance matching layer/depletion layer/reflecting layer composition three layers
Thin film, its positive wave-absorbing effect are significantly better than reverse side, the front membrane structure design it is correct.
Absorbing material of the present invention, after impedance matching layer is replaced with polypyrrole, inhale ripple main material be Graphene/
Ferroso-ferric oxide powder body,, when thickness is 0.2mm, its absorption maximum exceedes -42.3dB, and performance is far superior to using neoprene rubber for which
Glue and polyaniline.
Specific embodiment
Technical scheme is further illustrated below by specific embodiment.
Embodiment 1
A kind of absorbing material of polypyrrole for substrate, which is made up of impedance matching layer, depletion layer and reflecting layer from top to bottom,
Impedance matching layer is distributed in polypyrrole and is formed by Graphene/ferroso-ferric oxide powder body, and depletion layer is distributed to chlorine for hydroxy iron powder
Formed in buna, reflecting layer is distributed in neoprene and is formed by quartz/carbon black composite material.Quartz/the white carbon black is combined
In material, white carbon black accounts for 8wt%, and the impedance matching layer contains 2% graphene powder/ferroso-ferric oxide powder body.
The graphene powder/ferroso-ferric oxide powder preparation method is as follows：
(1), under condition of ice bath, under mechanical agitation, crystalline graphite powder is added in 98% concentrated sulphuric acid, add and account for
The sodium nitrate of graphite powder 80wt%, and to account for and react 30min under the potassium permanganate of 2 times of weight of graphite powder, ice bath；
(2) 30 DEG C of constant temperature 4h are heated to, deionized water and hydrogen peroxide is added, 1h is stirred, the HCl centrifugations of 5% concentration are added
Washing is until sulfate radical-free ion, obtains graphene oxide after being dried；
(3) described graphene oxide is distributed in ethanol solution, ultrasonic disperse obtains graphene oxide colloid
Solution；
(4) the graphene oxide colloid solution is heated to into 65 DEG C, stirring is lower to add the hydration that mass concentration is 85%
Hydrazine, after reacting 0.5 hour, according to Graphene:Ferroso-ferric oxide mass ratio is 1:2 ratio, adds ferroferric oxide powder, mixes
Close uniform；
(5) centrifugation wash, vacuum drying obtains graphene powder/ferroso-ferric oxide powder body.
The preparation method of the quartz/carbon black composite material is as follows：
(1) silica flour and white carbon black are put into into ball mill proportionally, ball milling 4 hours obtains powder；
(2) waterglass for accounting for powder quality 20wt% is added, and the concentration for accounting for powder quality 20wt% is added for 8wt%'s
Polyvinyl alcohol, it is after being uniformly mixed, compressing；
(3) moulded products that the molding is obtained are heated to into 180 DEG C, constant temperature at least 3 hours；
(4) profiled member after heat treatment is ground into into powder, obtains the quartz/carbon black composite material.
Jing is tested, the absorbing material, and, when thickness is 0.2mm, shielding propertiess increase to -39dB for which.
Comparative example 1
Impedance matching layer substrate described in embodiment 1 is replaced with into neoprene, remaining is same as Example 1.
Comparative example 2
Impedance matching layer substrate described in embodiment 1 is replaced with into polyaniline, remaining is same as Example 1.
Comparative example 3
Graphene in embodiment 1/ferroso-ferric oxide powder body is replaced with into Graphene/barium carbonate powder, remaining and enforcement
Example 1 is identical.
Comparative example 4
Graphite in the reflecting layer of embodiment 1 is replaced with into quartz/carbon black composite material, remaining is same as Example 1
Absorbing material described in embodiment 1, is contrasted with the absorbing material of comparative example 2, when which is when thickness is 0.2mm,
Its absorption maximum of the invention exceedes -42.3dB, and-the 9.46dB, -13.6dB, -17.2dB considerably beyond embodiment 1-4 proves to adopt
After with polypyrrole matrix, relative to neoprene and polyaniline bottom, performance is substantially improved.
, compared with comparative example 3, the sound-absorbing material which adulterates in being different only in that substrate is different for embodiment 1, and comparative example 3
Absorption maximum is only -8.79dB, is thus proved, the polypyrrole matrix of the present invention is made with Graphene/ferroso-ferric oxide powder body is combined
With can just play the lifting of performance, possess therebetween specific matching relationship, with synergism.
Embodiment 1 is only that the difference of reflecting layer alloy compared with comparative example 4, it was demonstrated that the doping physical performance of the present invention
It is more excellent.
Claims (4)
1. a kind of polypyrrole is the absorbing material of substrate, and which is made up of impedance matching layer, depletion layer and reflecting layer from top to bottom, resistance
Anti- matching layer is distributed in polypyrrole and is formed by Graphene/ferroso-ferric oxide powder body, and depletion layer is distributed to neoprene for hydroxy iron powder
Formed in rubber, reflecting layer is distributed in neoprene and is formed by 5-20wt% quartz/carbon black composite material, the impedance matching
The layer Graphene containing 2-5%/ferroso-ferric oxide powder body.
2. polypyrrole as claimed in claim 1 is the absorbing material of substrate, it is characterised in that Graphene/tetra- oxidation three
Iron powder preparation is as follows：
(1), under condition of ice bath, under mechanical agitation, crystalline graphite powder is added in 98% concentrated sulphuric acid, add and account for graphite
The sodium nitrate of powder 50-80wt%, and to account for and react 30-120min under the potassium permanganate of 2-4 times of weight of graphite powder, ice bath；
(2) be heated to 30-40 DEG C of constant temperature 4-5h, add deionized water and hydrogen peroxide, stir 1-3h, add the HCl of 5% concentration from
Heart washing is until sulfate radical-free ion, obtains graphene oxide after being dried；
(3) described graphene oxide is distributed in ethanol solution, ultrasonic disperse obtains graphene oxide colloid solution；
(4) the graphene oxide colloid solution is heated to into 65-75 DEG C, stirring is lower to add mass concentration for the water of 70-85%
Hydrazine is closed, after reaction 0.5-2 hours, according to Graphene:Ferroso-ferric oxide mass ratio is 2:1～1:2 ratio, adds four oxidations three
Iron powder, mix homogeneously；
(5) centrifugation wash, vacuum drying obtains graphene powder/ferroso-ferric oxide powder body.
3. polypyrrole as claimed in claim 1 is the absorbing material of substrate, it is characterised in that the quartz/white carbon black composite wood
In material, white carbon black accounts for 1-15vol%.
4. the polypyrrole as described in one of claim 1-3 is the absorbing material of substrate, it is characterised in that the quartz/white carbon black
The preparation method of composite is as follows：
(1) silica flour and white carbon black are put into into ball mill proportionally, ball milling 4-6 hours obtain powder；
(2) add and account for the waterglass of powder quality 20-30wt%, it is 8- to add and account for the concentration of powder quality 20-30wt
The polyvinyl alcohol of 12wt%, it is after being uniformly mixed, compressing；
(3) moulded products that the molding is obtained are heated to into 180-220 DEG C, constant temperature at least 3 hours；
(4) profiled member after heat treatment is ground into into powder, obtains the quartz/carbon black composite material.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610989003.1A CN106550591A (en) | 2016-11-10 | 2016-11-10 | A kind of absorbing material of polypyrrole for substrate |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610989003.1A CN106550591A (en) | 2016-11-10 | 2016-11-10 | A kind of absorbing material of polypyrrole for substrate |
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Citations (5)
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|---|---|---|---|---|
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| US20100164358A1 (en) * | 2008-12-30 | 2010-07-01 | Samsung Sdi Co., Ltd. | Filter for plasma display and fabricating method thereof |
| WO2012037445A2 (en) * | 2010-09-17 | 2012-03-22 | Drexel University | Novel applications for alliform carbon |
| CN103450683A (en) * | 2013-08-28 | 2013-12-18 | 西北工业大学 | Preparation method of polypyrrole/BaFe12O19-Ni0.8Zn0.2Fe2O4/graphene nano wave-absorbing material |
| CN105541290A (en) * | 2015-12-23 | 2016-05-04 | 中国建筑材料科学研究总院 | Ceramic tile with electromagnetic wave absorption function and preparation method of ceramic tile |
-
2016
- 2016-11-10 CN CN201610989003.1A patent/CN106550591A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101042005A (en) * | 2007-04-18 | 2007-09-26 | 大连理工大学 | Cement radical composite wave-suction material and preparation method thereof |
| US20100164358A1 (en) * | 2008-12-30 | 2010-07-01 | Samsung Sdi Co., Ltd. | Filter for plasma display and fabricating method thereof |
| WO2012037445A2 (en) * | 2010-09-17 | 2012-03-22 | Drexel University | Novel applications for alliform carbon |
| CN103450683A (en) * | 2013-08-28 | 2013-12-18 | 西北工业大学 | Preparation method of polypyrrole/BaFe12O19-Ni0.8Zn0.2Fe2O4/graphene nano wave-absorbing material |
| CN105541290A (en) * | 2015-12-23 | 2016-05-04 | 中国建筑材料科学研究总院 | Ceramic tile with electromagnetic wave absorption function and preparation method of ceramic tile |
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| Title |
|---|
| 张晓林: "石墨烯复合材料的制备及吸波性能", 《中国优秀硕士学位论文全文数据库工程科技I辑》 * |
| 管洪涛: "石英和水泥基体平板吸波材料研究", 《中国优秀博硕士学位论文全文数据库 (博士)工程科技Ⅰ辑》 * |
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Application publication date: 20170329 |