CN106564247A - Wave-absorbing material with improved base - Google Patents
Wave-absorbing material with improved base Download PDFInfo
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- CN106564247A CN106564247A CN201610991608.4A CN201610991608A CN106564247A CN 106564247 A CN106564247 A CN 106564247A CN 201610991608 A CN201610991608 A CN 201610991608A CN 106564247 A CN106564247 A CN 106564247A
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- B32B25/00—Layered products comprising a layer of natural or synthetic rubber
- B32B25/02—Layered products comprising a layer of natural or synthetic rubber with fibres or particles being present as additives in the layer
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- 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
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- 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
- B32B25/18—Layered products comprising a layer of natural or synthetic rubber comprising butyl or halobutyl rubber
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- 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
- B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
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- 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
- B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
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- 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
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- 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
- B32B2250/00—Layers arrangement
- B32B2250/03—3 layers
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- 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
- B32B2260/00—Layered product comprising an impregnated, embedded, or bonded layer wherein the layer comprises an impregnation, embedding, or binder material
- B32B2260/02—Composition of the impregnated, bonded or embedded layer
- B32B2260/025—Particulate layer
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- 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
- B32B2260/00—Layered product comprising an impregnated, embedded, or bonded layer wherein the layer comprises an impregnation, embedding, or binder material
- B32B2260/04—Impregnation, embedding, or binder material
- B32B2260/046—Synthetic resin
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- 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
- B32B2260/00—Layered product comprising an impregnated, embedded, or bonded layer wherein the layer comprises an impregnation, embedding, or binder material
- B32B2260/04—Impregnation, embedding, or binder material
- B32B2260/048—Natural or synthetic rubber
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- 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
- B32B2264/00—Composition or properties of particles which form a particulate layer or are present as additives
- B32B2264/10—Inorganic particles
- B32B2264/102—Oxide or hydroxide
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- 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
- B32B2264/00—Composition or properties of particles which form a particulate layer or are present as additives
- B32B2264/10—Inorganic particles
- B32B2264/104—Oxysalt, e.g. carbonate, sulfate, phosphate or nitrate particles
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- 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
- B32B2264/00—Composition or properties of particles which form a particulate layer or are present as additives
- B32B2264/10—Inorganic particles
- B32B2264/107—Ceramic
- B32B2264/108—Carbon, e.g. graphite particles
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- 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
- B32B2307/00—Properties of the layers or laminate
- B32B2307/20—Properties of the layers or laminate having particular electrical or magnetic properties, e.g. piezoelectric
- B32B2307/212—Electromagnetic interference shielding
Abstract
The invention discloses a wave-absorbing material with an improved base. The wave-absorbing material with the improved base is formed by an impedance matching layer, a loss layer and a reflecting layer from top to bottom. The impedance matching layer is formed by dispersing graphene powder/ barium titanate powder into polyaniline; the loss layer is formed by dispersing hydroxy iron powder into chloroprene rubber; the reflecting layer is formed by dispersing graphene into the chloroprene rubber; and the impedance matching layer contains 2 to 5 percent of graphene/ barium titanate powder or graphene/ ferroferric oxide powder. According to the wave-absorbing material provided by the invention, the impedance matching layer adopts the polyaniline, and the maximum absorption exceeds -15.2dB when the thickness of the impedance matching layer is 0.2mm, so that the performance of the impedance matching layer adopting the polyaniline is far better than an impedance matching layer adopting the chloroprene rubber.
Description
Technical field
The present invention relates to new material technology field, more particularly to a kind of absorbing material for improving substrate.
The present invention is earlier application " a kind of Graphene modified ferroferric oxide wave absorbing material " and " a kind of Graphene is modified
Barium metatitanate. absorbing material " 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 a kind of absorbing material for improving substrate, absorbing material performance protrusion is enabled to.
A kind of earlier application " Graphene modified Barium metatitanate. absorbing material " of inventor and " a kind of Graphene be modified four
Fe 3 O absorbing material " is made using the modified Barium metatitanate. absorbing material of graphene powder/ferroso-ferric oxide powder body and Graphene
To inhale ripple main material, the substrate of its impedance matching layer is neoprene.Inventor is optimized to the absorbing material, to substrate
It is optimized, seeks the absorbing material of higher performance, to improves absorbing property.
It is that, up to this purpose, the present invention is employed the following technical solutions：
A kind of absorbing material for improving substrate, which is made up of impedance matching layer, depletion layer and reflecting layer from top to bottom, impedance
Matching layer is distributed in polyaniline and is formed by the Graphene/barium carbonate powder or Graphene/ferroso-ferric oxide powder body of 2-5%, is damaged
Consumption layer is distributed in neoprene for hydroxy iron powder and is formed, and reflecting layer is formed in neoprene by graphite dispersion.
Preferably, 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 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 powder/ferroso-ferric oxide powder body.
Preferably, the graphene powder/barium titanate powder preparation of the invention 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:Barium metatitanate. mass ratio is 2:1～1:2 ratio, adds barium titanate powder
End, mix homogeneously；
(5) centrifugation wash, vacuum drying obtains graphene powder/barium carbonate powder.
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.Suction of the present invention
Wave material, after impedance matching layer is replaced with polyaniline,, when thickness is 0.2mm, its absorption maximum exceedes -15.2dB for which,
Performance far superior to adopts neoprene.
Specific embodiment
Technical scheme is further illustrated below by specific embodiment.
Embodiment 1
A kind of absorbing material for improving substrate, which is made up of impedance matching layer, depletion layer and reflecting layer from top to bottom, impedance
Matching layer is distributed in polyaniline and is formed by graphene powder/barium carbonate powder, and depletion layer is distributed to neoprene rubber for hydroxy iron powder
Formed in glue, reflecting layer formed in neoprene by graphite dispersion, the impedance matching layer contain 2% graphene powder/
Barium carbonate powder.
The graphene powder/barium titanate 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
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:Barium metatitanate. mass ratio is 1:2 ratio, adds barium titanate powder, mix homogeneously；
(5) centrifugation wash, vacuum drying obtains graphene powder/barium carbonate powder.
Embodiment 2
A kind of absorbing material for improving substrate, which is made up of impedance matching layer, depletion layer and reflecting layer from top to bottom, impedance
Matching layer is distributed in polyaniline and is formed by Graphene/ferroso-ferric oxide powder body, and depletion layer is distributed to neoprene rubber for hydroxy iron powder
Formed in glue, reflecting layer formed in neoprene by graphite dispersion, the impedance matching layer contain 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.
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 2 is replaced with into neoprene, remaining is same as Example 1.
Absorbing material described in embodiment 1 and 2, is contrasted with the absorbing material of comparative example 2, when which is 0.2mm in thickness
When, its absorption maximum of the invention exceedes -15.2dB, considerably beyond-the 13.6dB and -9.46dB of embodiment 1 and 2, it was demonstrated that adopt
After polyaniline matrix, relative to neoprene, performance is substantially improved.
Claims (3)
1. it is a kind of improve substrate absorbing material, which is made up of impedance matching layer, depletion layer and reflecting layer from top to bottom, impedance
It is distributed in polyaniline and is formed by the Graphene/barium carbonate powder or Graphene/ferroso-ferric oxide powder body of 2-5% with layer, is lost
Layer is distributed in neoprene for hydroxy iron powder and is formed, and reflecting layer is formed in neoprene by graphite dispersion.
2. the absorbing material of substrate is improved as claimed in claim 1, it is characterised in that the Graphene/ferroso-ferric oxide 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. the absorbing material of substrate is improved as claimed in claim 1, it is characterised in that the Graphene/barium titanate powder system
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 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:Barium metatitanate. mass ratio is 2:1～1:2 ratio, adds barium titanate powder,
Mix homogeneously；
(5) centrifugation wash, vacuum drying obtains graphene powder/barium carbonate powder.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113480785A (en) * | 2021-08-16 | 2021-10-08 | 内蒙古元瓷新材料科技有限公司 | Preparation method of chitosan titanium compound composite magnetic graphene |
| CN114751676A (en) * | 2022-04-20 | 2022-07-15 | 中建八局检测科技有限公司 | Noise-reducing magnetorheological pavement material and preparation method thereof |
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| US20090314539A1 (en) * | 2003-03-25 | 2009-12-24 | Shin-Etsu Polymer Co., Ltd. | Electromagnetic noise suppressor, article with electromagnetic noise suppressing function and their manufacturing methods |
| CN102179965A (en) * | 2010-12-28 | 2011-09-14 | 中国航空工业集团公司北京航空材料研究院 | Three-layer composite wave-absorbing film and preparation method thereof |
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2016
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| US20090314539A1 (en) * | 2003-03-25 | 2009-12-24 | Shin-Etsu Polymer Co., Ltd. | Electromagnetic noise suppressor, article with electromagnetic noise suppressing function and their manufacturing methods |
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| CN102179965A (en) * | 2010-12-28 | 2011-09-14 | 中国航空工业集团公司北京航空材料研究院 | Three-layer composite wave-absorbing film and preparation method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113480785A (en) * | 2021-08-16 | 2021-10-08 | 内蒙古元瓷新材料科技有限公司 | Preparation method of chitosan titanium compound composite magnetic graphene |
| CN114751676A (en) * | 2022-04-20 | 2022-07-15 | 中建八局检测科技有限公司 | Noise-reducing magnetorheological pavement material and preparation method thereof |
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Application publication date: 20170419 |