CN109835010A - A kind of Wave suction composite material and preparation method thereof - Google Patents
A kind of Wave suction composite material and preparation method thereof Download PDFInfo
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Abstract
The present invention provides a kind of Wave suction composite materials and preparation method thereof, Wave suction composite material is prepared by the way that main body suction wave layer to be clipped between impedance matching layer and electromagnetic consumable layer, the two is connected using the connection type that can regulate and control the distance between impedance matching layer and electromagnetic consumable layer, and main body is inhaled into wave layer three-dimensional grapheme absorbing material folder between these two layers there, it is good and can be adjusted by itself and to realize the DEFORMATION RESPONSE type Wave suction composite material of different absorbing properties to provide a kind of absorbing property, overcome the shortcomings that traditional absorbing material only works under single frequency band, it can be used for preparing the absorbing material for needing actively to adjust absorbing property, to be applied to have the equipment of stealthy demand to different frequency range.
Description
Technical field
The present invention relates to field of compound material, specifically, a kind of Wave suction composite material and preparation method thereof.
Background technique
With high-tech continuous development, the continuous of high-tech product is popularized, and electromagnetic pollution problem has been not limited solely to
The stealth technology of military field, it will also result in interference to precision instrument, electronic equipment etc., or even directly threaten the strong of the mankind
Health becomes the hot issue of society and scientific circles' concern, as it is in industry, military using more and more, and gradually answers
For in various civil electronic electrical equipments, electromagnetic absorber to receive the great attention of people from all walks of life, therefore, to reducing electricity
The research of the absorbing material of electromagnetic radiation damage also becomes most important.
The basic physical principle of absorbing material is that material on incident electromagnetic wave realizes effectively absorption, and electromagnetic wave energy is converted
Dissipated for thermal energy or the energy of other forms, absorbing material should be provided simultaneously with impedance matching property and attenuation characteristic the two
Characteristic.The working frequency range of traditional absorbing material is fixed, general only to work under single frequency band, it is thus impossible to making
Used time actively adjusts its absorbing property.
Summary of the invention
For the problems in the relevant technologies, the present invention provides a kind of Wave suction composite materials and preparation method thereof, develop
It is a kind of to adjust with good absorbing property and actively the Wave suction composite material of absorbing property.
Wave suction composite material provided by the invention, comprising: impedance matching layer, as upper layer；Main body inhales wave layer, as in
Interbed, wherein it includes three-dimensional grapheme absorbing material and electromagnetic consumable layer that the main body, which inhales wave layer, as bottom layer；Its
In, the impedance matching layer is connected to the electromagnetic consumable layer by the distance between controllable two layers of connection type, simultaneously
Main body suction wave layer is clipped between the impedance matching layer and the electromagnetic consumable layer.
In above-mentioned Wave suction composite material, the basis material of the impedance matching layer and the electromagnetic consumable layer is epoxy
One of resin, vinylite, quartz fibre, glass fibre or a variety of combinations.
In above-mentioned Wave suction composite material, the absorbent of the impedance matching layer is spherical ferromagnetic metallic particles, spherical iron
One of magnetic metallic particles/dielectric composite grains or a variety of combinations.
In above-mentioned Wave suction composite material, the spherical ferromagnetic metallic particles is spherical shape Fe metallic particles, spherical shape Co metal
One of particle, spherical Ni metallic particles or a variety of combinations.
In above-mentioned Wave suction composite material, the spherical ferromagnetic metallic particles/dielectric composite grains are spherical Ni/
SiO2、Fe/SiO2, one of Co/C or a variety of combinations.
In above-mentioned Wave suction composite material, the absorbent of the electromagnetic consumable layer is sheet feeromagnetic metal, in ferrite
One or more combinations.
In above-mentioned Wave suction composite material, the sheet feeromagnetic metal is one of Fe, Co, Ni of sheet or a variety of
Combination.
In above-mentioned Wave suction composite material, the ferrite is ZnFe2O4、CoFe2O4、MnFe2O4One of or it is a variety of
Combination.
The preparation method of above-mentioned Wave suction composite material provided by the invention, comprising: impedance matching layer is connected to electromagnetism damage
Layer is consumed, while main body suction wave layer being clipped between the impedance matching layer and the electromagnetic consumable layer, so that it is compound that suction wave is made
Material, wherein it includes three-dimensional grapheme absorbing material that the main body, which inhales wave layer,.
In the above preparation method, the preparation step of the impedance matching layer includes: that absorbent is dispersed in basis material
In, to prepare impedance matching layer, wherein the basis material of the impedance matching layer is epoxy resin, vinylite, quartz fibre
One of dimension, glass fibre or a variety of combinations, absorbent are spherical ferromagnetic metallic particles, spherical ferromagnetic metallic particles/Jie
One of electric composite particles or a variety of combinations.
In the above preparation method, the preparation step of the electromagnetic consumable layer includes: that absorbent is dispersed in basis material
In, to prepare electromagnetic consumable layer, wherein the basis material of the electromagnetic consumable layer is epoxy resin, vinylite, quartz fibre
One of dimension, glass fibre or a variety of combinations, absorbent are one of sheet feeromagnetic metal, ferrite or a variety of groups
It closes.
The present invention by by main body suction wave layer three-dimensional grapheme absorbing material be clipped in impedance matching layer and electromagnetic consumable layer it
Between prepare Wave suction composite material, the present invention is by using can regulate and control the distance between impedance matching layer and electromagnetic consumable layer
Connection type connects the two, and main body is inhaled wave layer folder between these two layers there, by inhaling wave layer three-dimensional grapheme using main body
The characteristic that absorbing property changes with the variation of its thickness has prepared a kind of can adjust by itself to realize different suctions
The DEFORMATION RESPONSE type Wave suction composite material of wave performance overcomes the shortcomings that traditional absorbing material only works under single frequency band,
It can be used for preparing the absorbing material for needing actively to adjust absorbing property, to be applied to the dress for having stealthy demand to different frequency range
It is standby.
Detailed description of the invention
It in order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, below will be to institute in embodiment
Attached drawing to be used is needed to be briefly described, it should be apparent that, the accompanying drawings in the following description is only some implementations of the invention
Example, for those of ordinary skill in the art, without creative efforts, can also obtain according to these attached drawings
Obtain other attached drawings.
Fig. 1 is the structural schematic diagram of the Wave suction composite material of embodiment according to the present invention, wherein 1 indicates impedance matching
Layer, 2 indicate that main body inhales wave layer, and 3 indicate electromagnetic consumable layer.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art's every other embodiment obtained belong to what the present invention protected
Range.
The preparation method of Wave suction composite material provided by the invention, comprising:
It prepares three-dimensional grapheme absorbing material shown in 2 as shown in figure 1: three-dimensional grapheme is prepared by solvothermal method
Graphene oxide dispersion is prepared by modified humers method first in absorbing material, and graphene oxide solution has
Higher degree of oxidation and biggish diameter.Then the solution is diluted with solvent, the pH value of solution is adjusted to 9 with ammonium hydroxide~
11, the graphene solution of a certain concentration stable dispersion is obtained, is poured into hydrothermal reaction kettle and carries out the solvent heat of high temperature and pressure
Reaction obtains the graphene hydrogel with cubic network skeleton structure, so after reacting 16h~for 24 hours at 140 DEG C~180 DEG C
It is dialysed repeatedly with deionized water afterwards and graphite water alkene hydrogel, after the solvent for completely removing the inside, carries out pre-freeze in refrigerator, it will
The good graphene hydrogel of pre-freeze is dried, and obtains extremely-low density, has the three-dimensional stone of certain elasticity and satisfactory mechanical property
Black alkene aeroge will anneal at 400 DEG C~800 DEG C of three-dimensional grapheme aeroge, obtain three-dimensional grapheme absorbing material, wherein
Three-dimensional grapheme absorbing material with a thickness of 6mm~10mm.In this step, solvent is ethylene glycol, in dehydrated alcohol, n-butyl alcohol
One or more combinations, the drying process of graphene hydrogel includes supercritical CO2One of dry, freeze-drying or
Two kinds of combination.The principle of solvothermal method preparation process is hydrophobic effect and π-π based on graphene oxide micro-nano
Interaction makes it be self-assembled into three-dimensional network structure and forms wet gel, then removes network gap through solvent exchange procedure
Finally three-dimensional grapheme material is made using special drying process in the middle biggish solvent of surface tension.
It prepares impedance matching layer shown in 1 as shown in figure 1: absorbent being dispersed in basis material, to prepare impedance
With layer, wherein the basis material of impedance matching layer is one of epoxy resin, vinylite, quartz fibre, glass fibre
Or a variety of combinations, absorbent be one of spherical ferromagnetic metallic particles, spherical ferromagnetic metallic particles/dielectric composite grains or
A variety of combination, wherein spherical ferromagnetic metallic particles is spherical shape Fe metallic particles, spherical shape Co metallic particles, spherical Ni metal
One of grain or a variety of combinations and spherical ferromagnetic metallic particles/dielectric composite grains are spherical Ni/SiO2、Fe/
SiO2, one of Co/C or a variety of combinations, impedance matching layer with a thickness of 0.5~2mm.
Electromagnetic consumable layer shown in 3 as shown in figure 1 is prepared, absorbent is dispersed in basis material, to prepare electromagnetism damage
Consume layer, wherein the basis material of electromagnetic consumable layer is one of epoxy resin, vinylite, quartz fibre, glass fibre
Or a variety of combinations, absorbent are one of sheet feeromagnetic metal, ferrite or a variety of combinations, wherein the ferromagnetic gold of sheet
Category is one of Fe, Co, Ni of sheet or a variety of combinations and ferrite is ZnFe2O4、CoFe2O4、MnFe2O4In
One or more combinations, electromagnetic consumable layer with a thickness of 0.5~2mm.
Wave suction composite material is prepared, impedance matching layer is connected to electromagnetic consumable layer, while main body suction wave layer is clipped in resistance
Between anti-matching layer and electromagnetic consumable layer, so that Wave suction composite material be made, wherein it includes that three-dimensional grapheme is inhaled that main body, which inhales wave layer,
Wave material.In this step, impedance matching layer is connected to by electromagnetism damage by controllable the distance between two layers of connection type
Layer is consumed, while by three-dimensional grapheme material clip between impedance matching layer and electromagnetic consumable layer, wherein connection type includes bolt
One of connection, cam connection, spring connection, automatically controlled bracket or a variety of combinations.
The reflectance test of Wave suction composite material: using the reflection of arch method test radar absorbing in microwave dark room
Rate.
Embodiment 1
It prepares three-dimensional grapheme absorbing material: three-dimensional grapheme absorbing material is prepared by solvothermal method, it is logical first
It crosses modified humers method and graphene oxide dispersion is prepared, then dilute the solution with dehydrated alcohol, it will with ammonium hydroxide
The pH value of solution is adjusted to 9, obtains the graphene ethanol solution of a certain concentration stable dispersion, be poured into hydrothermal reaction kettle into
The solvent thermal reaction of row high temperature and pressure after reacting for 24 hours at 180 DEG C, obtains the graphene water with cubic network skeleton structure
Then gel is dialysed and graphite water alkene hydrogel repeatedly with deionized water, after the dehydrated alcohol for completely removing the inside, in refrigerator
Pre-freeze is carried out, the good graphene hydrogel of pre-freeze is freeze-dried, extremely-low density is obtained, has certain elasticity and mechanicalness
The good three-dimensional grapheme aeroge of energy, three-dimensional grapheme aeroge is annealed at 600 DEG C, is obtained three-dimensional grapheme and is inhaled wave material
Material, three-dimensional grapheme absorbing material with a thickness of 8mm.
It prepares impedance matching layer: spherical Fe metallic particles is dispersed in by epoxy resin-base using method commonly used in the art
In material, to prepare impedance matching layer, impedance matching layer with a thickness of 1mm.
It prepares electromagnetic consumable layer: sheet Ni is dispersed in by vinylite basis material using method commonly used in the art
In, to prepare electromagnetic consumable layer, electromagnetic consumable layer with a thickness of 1mm.
The impedance matching layer of above-mentioned preparation is connected to the electromagnetic consumable of above-mentioned preparation by the connection type being bolted
Layer, wherein as upper layer, electromagnetic consumable layer presss from both sides impedance matching layer as bottom layer, while by three-dimensional grapheme absorbing material
Between impedance matching layer and electromagnetic consumable layer, so that Wave suction composite material be made.
The test result of the absorption bands of Wave suction composite material prepared by the present embodiment and its corresponding reflectivity such as 1 institute of table
Show.
Comparative example 1
By the thickness of the Wave suction composite material by 10mm boil down to 6mm, wherein impedance matching layer and low frequency electromagnetic depletion layer
Thickness is constant, and the thickness of three-dimensional grapheme becomes 4mm from 8mm, then to the absorption bands of the Wave suction composite material and its accordingly
The test result of reflectivity is as shown in table 1.
Embodiment 2
It prepares three-dimensional grapheme absorbing material: three-dimensional grapheme absorbing material is prepared by solvothermal method, it is logical first
It crosses modified humers method and graphene oxide dispersion is prepared, then dilute the solution with dehydrated alcohol, it will with ammonium hydroxide
The pH value of solution is adjusted to 11, obtains the graphene ethanol solution of a certain concentration stable dispersion, is poured into hydrothermal reaction kettle
The solvent thermal reaction for carrying out high temperature and pressure obtains the graphene with cubic network skeleton structure after reacting 16h at 160 DEG C
Then hydrogel is dialysed and graphite water alkene hydrogel repeatedly with deionized water, after the dehydrated alcohol for completely removing the inside, in ice
Case carries out pre-freeze, and the good graphene hydrogel of pre-freeze is carried out supercritical CO2It is dry, extremely-low density is obtained, has certain elasticity
And the three-dimensional grapheme aeroge of satisfactory mechanical property, three-dimensional grapheme aeroge is annealed at 600 DEG C, obtains three-dimensional graphite
Alkene absorbing material, three-dimensional grapheme absorbing material with a thickness of 10mm.
It prepares impedance matching layer: spherical Co metallic particles is dispersed in by vinylite base using method commonly used in the art
In body material, to prepare impedance matching layer, impedance matching layer with a thickness of 2mm.
It prepares electromagnetic consumable layer: using method commonly used in the art by sheet ZnFe2O4It is dispersed in quartz fibre basis material
In, to prepare electromagnetic consumable layer, electromagnetic consumable layer with a thickness of 1.5mm.
The impedance matching layer of above-mentioned preparation is connected to the electromagnetic consumable of above-mentioned preparation by the connection type connected by cam
Layer, wherein as upper layer, electromagnetic consumable layer presss from both sides impedance matching layer as bottom layer, while by three-dimensional grapheme absorbing material
Between impedance matching layer and electromagnetic consumable layer, so that Wave suction composite material be made.
The test result of the absorption bands of Wave suction composite material prepared by the present embodiment and its corresponding reflectivity such as 1 institute of table
Show.
Comparative example 2
By the thickness of the Wave suction composite material by 13.5mm boil down to 9.5mm, wherein impedance matching layer and low-frequency electrical magnetic loss
Consume that thickness degree is constant, and the thickness of three-dimensional grapheme becomes 6mm from 10mm, then to the absorption bands of the Wave suction composite material and its
The test result of corresponding reflectivity is as shown in table 1.
Embodiment 3
It prepares three-dimensional grapheme absorbing material: three-dimensional grapheme absorbing material is prepared by solvothermal method, it is logical first
It crosses modified humers method and graphene oxide dispersion is prepared, then spent glycol dilutes the solution, will be molten with ammonium hydroxide
The pH value of liquid is adjusted to 10, obtains the graphene ethanol solution of a certain concentration stable dispersion, be poured into hydrothermal reaction kettle into
The solvent thermal reaction of row high temperature and pressure obtains the graphene water with cubic network skeleton structure after reacting 20h at 140 DEG C
Gel, is then dialysed with deionized water and graphite water alkene hydrogel repeatedly, after the ethylene glycol for completely removing the inside, refrigerator into
The good graphene hydrogel of pre-freeze is freeze-dried, obtains extremely-low density by row pre-freeze, has certain elasticity and mechanical performance
Good three-dimensional grapheme aeroge anneals three-dimensional grapheme aeroge at 600 DEG C, obtains three-dimensional grapheme and inhales wave material
Material, three-dimensional grapheme absorbing material with a thickness of 6mm.
It prepares impedance matching layer: spherical Co/C is dispersed in by quartz fibre basis material using method commonly used in the art
In, to prepare impedance matching layer, impedance matching layer with a thickness of 0.5mm.
It prepares electromagnetic consumable layer: using method commonly used in the art by sheet CoFe2O4It is dispersed in glass fiber matrix material
In, to prepare electromagnetic consumable layer, electromagnetic consumable layer with a thickness of 1mm.
The impedance matching layer of above-mentioned preparation is connected to the electromagnetic consumable of above-mentioned preparation by the connection type connected by spring
Layer, wherein as upper layer, electromagnetic consumable layer presss from both sides impedance matching layer as bottom layer, while by three-dimensional grapheme absorbing material
Between impedance matching layer and electromagnetic consumable layer, so that Wave suction composite material be made.
The test result of the absorption bands of Wave suction composite material prepared by the present embodiment and its corresponding reflectivity such as 1 institute of table
Show.
Comparative example 3
By the thickness of the Wave suction composite material by 7.5mm boil down to 6.5mm, wherein impedance matching layer and low-frequency electrical magnetic loss
Consume that thickness degree is constant, and the thickness of three-dimensional grapheme becomes 5mm from 6mm, then to the absorption bands of the Wave suction composite material and its
The test result of corresponding reflectivity is as shown in table 1.
Embodiment 4
It prepares three-dimensional grapheme absorbing material: three-dimensional grapheme absorbing material is prepared by solvothermal method, it is logical first
It crosses modified humers method and graphene oxide dispersion is prepared, then spent glycol dilutes the solution, will be molten with ammonium hydroxide
The pH value of liquid is adjusted to 11, obtains the graphene ethanol solution of a certain concentration stable dispersion, be poured into hydrothermal reaction kettle into
The solvent thermal reaction of row high temperature and pressure obtains the graphene water with cubic network skeleton structure after reacting 18h at 160 DEG C
Gel, is then dialysed with deionized water and graphite water alkene hydrogel repeatedly, after the ethylene glycol for completely removing the inside, refrigerator into
The good graphene hydrogel of pre-freeze is carried out supercritical CO by row pre-freeze2It is dry, extremely-low density is obtained, has certain elasticity and machine
Tool three-dimensional grapheme aeroge of good performance anneals three-dimensional grapheme aeroge at 400 DEG C, obtains three-dimensional grapheme suction
Wave material, three-dimensional grapheme absorbing material with a thickness of 7mm.
It prepares impedance matching layer: using method commonly used in the art by spherical Fe/SiO2It is dispersed in epoxy resin-base material
In material, to prepare impedance matching layer, impedance matching layer with a thickness of 1mm.
It prepares electromagnetic consumable layer: using method commonly used in the art by MnFe2O4It is dispersed in epoxy resin-base material,
To prepare electromagnetic consumable layer, electromagnetic consumable layer with a thickness of 2mm.
The impedance matching layer of above-mentioned preparation is connected to the electromagnetic consumable of above-mentioned preparation by the connection type connected by spring
Layer, wherein as upper layer, electromagnetic consumable layer presss from both sides impedance matching layer as bottom layer, while by three-dimensional grapheme absorbing material
Between impedance matching layer and electromagnetic consumable layer, so that Wave suction composite material be made.
The test result of the absorption bands of Wave suction composite material prepared by the present embodiment and its corresponding reflectivity such as 1 institute of table
Show.
Comparative example 4
By the thickness of the Wave suction composite material by 10mm boil down to 8mm, wherein impedance matching layer and low frequency electromagnetic depletion layer
Thickness is constant, and the thickness of three-dimensional grapheme becomes 5mm from 7mm, then to the absorption bands of the Wave suction composite material and its accordingly
The test result of reflectivity is as shown in table 1.
Embodiment 5
It prepares three-dimensional grapheme absorbing material: three-dimensional grapheme absorbing material is prepared by solvothermal method, it is logical first
It crosses modified humers method and graphene oxide dispersion is prepared, then dilute the solution with n-butyl alcohol, it will be molten with ammonium hydroxide
The pH value of liquid is adjusted to 9, obtains the graphene ethanol solution of a certain concentration stable dispersion, is poured into hydrothermal reaction kettle and carries out
The solvent thermal reaction of high temperature and pressure obtains the graphene water-setting with cubic network skeleton structure after reacting 22h at 170 DEG C
Then glue is dialysed and graphite water alkene hydrogel repeatedly with deionized water, after the n-butyl alcohol for completely removing the inside, carry out in refrigerator
The good graphene hydrogel of pre-freeze is carried out supercritical CO by pre-freeze2It is dry, extremely-low density is obtained, has certain elasticity and machinery
Three-dimensional grapheme aeroge of good performance anneals three-dimensional grapheme aeroge at 800 DEG C, obtains three-dimensional grapheme and inhales wave
Material, three-dimensional grapheme absorbing material with a thickness of 9mm.
It prepares impedance matching layer: using method commonly used in the art by spherical Ni/SiO2It is dispersed in glass fiber matrix material
In material, to prepare impedance matching layer, impedance matching layer with a thickness of 1.5mm.
It prepares electromagnetic consumable layer: Fe being dispersed in vinylite basis material using method commonly used in the art, with
Prepare electromagnetic consumable layer, electromagnetic consumable layer with a thickness of 0.5mm.
The impedance matching layer of above-mentioned preparation is connected to the electromagnetic consumable of above-mentioned preparation by the connection type of automatically controlled bracket
Layer, wherein as upper layer, electromagnetic consumable layer presss from both sides impedance matching layer as bottom layer, while by three-dimensional grapheme absorbing material
Between impedance matching layer and electromagnetic consumable layer, so that Wave suction composite material be made.
The test result of the absorption bands of Wave suction composite material prepared by the present embodiment and its corresponding reflectivity such as 1 institute of table
Show.
Comparative example 5
By the thickness of the Wave suction composite material by 11mm boil down to 8mm, wherein impedance matching layer and low frequency electromagnetic depletion layer
Thickness is constant, and the thickness of three-dimensional grapheme becomes 6mm from 9mm, then to the absorption bands of the Wave suction composite material and its accordingly
The test result of reflectivity is as shown in table 1.
The absorption bands and corresponding average reflectance of 1 Wave suction composite material of table
It can be seen that from above-described embodiment and comparative example when impedance matching layer and low frequency electromagnetic depletion layer thickness are constant, three
When the thickness of dimension graphene is thinning, radar absorption frequency band is mobile to high frequency direction, the average reflectance of 8~18GHz radar
Reachable -20dB.This illustrates that the present invention changes with its thickness change using three-dimensional grapheme absorbing property and develops a kind of deformation
Response type Wave suction composite material, performance, which can absorb more by force to absorb to 8~18GHz extra-heavy from 2~18GHz, to be changed.
The present invention inhales wave composite wood by the way that main body suction wave layer to be clipped between impedance matching layer and electromagnetic consumable layer to prepare
The two is connected using the connection type that can regulate and control the distance between impedance matching layer and electromagnetic consumable layer, and will had by material
The three-dimensional grapheme absorbing material of elasticity inhales wave layer folder between these two layers there as main body, by utilizing three-dimensional grapheme wave absorbtion
The characteristic that can change with the variation of its thickness has prepared a kind of can adjust by itself to realize different absorbing properties
DEFORMATION RESPONSE type Wave suction composite material, overcome traditional absorbing material only the shortcomings that working under single frequency band, and should
Wave suction composite material also has excellent absorbing property, can be used for preparing the absorbing material for needing actively to adjust absorbing property, from
And it is applied to the equipment for having stealthy demand to different frequency range.
The above is merely preferred embodiments of the present invention, be not intended to limit the invention, it is all in spirit of the invention and
Within principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (11)
1. a kind of Wave suction composite material characterized by comprising
Impedance matching layer, as upper layer；
Main body inhales wave layer, as middle layer, wherein and it includes three-dimensional grapheme absorbing material that the main body, which inhales wave layer, and
Electromagnetic consumable layer, as bottom layer；
Wherein, the impedance matching layer is connected to the electromagnetic consumable by the distance between controllable two layers of connection type
Layer, while main body suction wave layer being clipped between the impedance matching layer and the electromagnetic consumable layer.
2. Wave suction composite material according to claim 1, which is characterized in that the impedance matching layer and the electromagnetic consumable
The basis material of layer is one of epoxy resin, vinylite, quartz fibre, glass fibre or a variety of combinations.
3. Wave suction composite material according to claim 1, which is characterized in that the absorbent of the impedance matching layer is spherical shape
One of ferromagnetic metallic granular system, spherical ferromagnetic metallic particles/dielectric composite grains or a variety of combinations.
4. Wave suction composite material according to claim 3, which is characterized in that the spherical ferromagnetic metallic particles is spherical shape Fe
One of metallic particles, spherical shape Co metallic particles, spherical Ni metallic particles or a variety of combinations.
5. Wave suction composite material according to claim 3, which is characterized in that the spherical ferromagnetic metallic particles/dielectric is multiple
Closing particle is spherical Ni/SiO2、Fe/SiO2, one of Co/C or a variety of combinations.
6. Wave suction composite material according to claim 1, which is characterized in that the absorbent of the electromagnetic consumable layer is sheet
One of feeromagnetic metal, ferrite or a variety of combinations.
7. Wave suction composite material according to claim 6, which is characterized in that the sheet feeromagnetic metal be sheet Fe,
One of Co, Ni or a variety of combinations.
8. Wave suction composite material according to claim 6, which is characterized in that the ferrite is ZnFe2O4、CoFe2O4、
MnFe2O4One of or a variety of combinations.
9. a kind of method for preparing Wave suction composite material according to any one of claims 1 to 8, which is characterized in that by impedance
It is connected to electromagnetic consumable layer with layer, while main body suction wave layer being clipped between the impedance matching layer and the electromagnetic consumable layer,
To which Wave suction composite material be made, wherein it includes three-dimensional grapheme absorbing material that the main body, which inhales wave layer,.
10. preparation method according to claim 9, which is characterized in that the preparation step of the impedance matching layer includes:
Absorbent is dispersed in basis material, to prepare impedance matching layer, wherein the basis material of the impedance matching layer is
One of epoxy resin, vinylite, quartz fibre, glass fibre or a variety of combinations, absorbent are spherical ferromagnetic gold
One of metal particles, spherical ferromagnetic metallic particles/dielectric composite grains or a variety of combinations.
11. preparation method according to claim 9, which is characterized in that the preparation step of the electromagnetic consumable layer includes:
Absorbent is dispersed in basis material, to prepare electromagnetic consumable layer, wherein the basis material of the electromagnetic consumable layer is
One of epoxy resin, vinylite, quartz fibre, glass fibre or a variety of combinations, absorbent are the ferromagnetic gold of sheet
One of category, ferrite or a variety of combinations.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111572156A (en) * | 2020-05-29 | 2020-08-25 | 江苏雷鸟伪装纺织新材料有限公司 | Take anti-flaming function's ripples of inhaling camouflage surface fabric |
| CN115678382A (en) * | 2022-10-27 | 2023-02-03 | 航天科工武汉磁电有限责任公司 | Corrosion-resistant wave-absorbing coating and preparation method and application thereof |
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