CN106007804A - Radar wave-absorbing material with high-temperature-resistant and high-impedance surface and preparation method of radar wave-absorbing material - Google Patents
Radar wave-absorbing material with high-temperature-resistant and high-impedance surface and preparation method of radar wave-absorbing material Download PDFInfo
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/009—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone characterised by the material treated
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C8/00—Enamels; Glazes; Fusion seal compositions being frit compositions having non-frit additions
- C03C8/02—Frit compositions, i.e. in a powdered or comminuted form
- C03C8/10—Frit compositions, i.e. in a powdered or comminuted form containing lead
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- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/45—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements
- C04B41/50—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials
- C04B41/5072—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials with oxides or hydroxides not covered by C04B41/5025
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- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/80—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone of only ceramics
- C04B41/81—Coating or impregnation
- C04B41/85—Coating or impregnation with inorganic materials
- C04B41/86—Glazes; Cold glazes
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- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00241—Physical properties of the materials not provided for elsewhere in C04B2111/00
- C04B2111/00258—Electromagnetic wave absorbing or shielding materials
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- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/50—Constituents or additives of the starting mixture chosen for their shape or used because of their shape or their physical appearance
- C04B2235/52—Constituents or additives characterised by their shapes
- C04B2235/5208—Fibers
- C04B2235/5216—Inorganic
- C04B2235/522—Oxidic
- C04B2235/5232—Silica or silicates other than aluminosilicates, e.g. quartz
Abstract
The invention discloses a radar wave-absorbing material with a high-temperature-resistant and high-impedance surface. The radar wave-absorbing material adopts a double-layer structure and comprises a medium substrate layer at the bottom and a high-impedance surface layer located on the surface layer, wherein the medium substrate layer is made of an oxide fiber reinforced oxide-based composite, and the high-impedance surface layer mainly comprises a high-temperature-resistant resistance coating with periodical patterns. The preparation method comprises steps as follows: a medium substrate is selected and prepared, the high-temperature-resistant resistance coating is printed on the surface of the medium substrate with a silk screen printing process, dried and sintered, and the radar wave-absorbing material with the high-temperature-resistant and high-impedance surface is obtained. The radar wave-absorbing material with the high-temperature-resistant and high-impedance surface can resist high temperature of at least 1,000 DEG C, and has better high-temperature resistance and excellent oxidation resistance.
Description
Technical field
The present invention relates to radar absorbing field, particularly relate to a kind of high temperature resistant high impedance surface radar absorbing and preparation thereof
Method.
Background technology
Radar absorbing can be divided into room temperature (using temperature less than 200 DEG C) and the big class of high temperature two according to service temperature scope.
Comparatively speaking, the research comparative maturity of current ambient temperature radar absorbing, and to the research of high temperature radar absorbing also in long-pending
During pole is explored.
Disclose at present and reported several high temperature microwave-absorbing ceramic structure and preparation method thereof.ZL201110052115.1 China is special
Profit composite material of silicon carbide microwave-absorbing ceramic disclosing a kind of three-decker and preparation method thereof, the microwave-absorbing ceramic of this report is by mating
According to design, layer, depletion layer and reflecting layer composition, require that each functional layer need to possess different dielectric properties, the microwave-absorbing ceramic of preparation
Reflectance in 8GHz～18GHz frequency range is smaller than-9dB.ZL201110053460.7 Chinese patent discloses a kind of four
Composite material of silicon carbide microwave-absorbing ceramic of Rotating fields and preparation method thereof, the microwave-absorbing ceramic of this report is by matching layer, depletion layer, Jie
According to design, matter layer and reflecting layer composition, require that each functional layer need to possess different dielectric properties, the microwave-absorbing ceramic room temperature of preparation
Reflectance in 8GHz～18GHz frequency range is smaller than-8dB, and under 700 DEG C of high temperature examinations, its reflectance bandwidth less than-8dB is still
There is nearly about 10GHz.But high temperature microwave-absorbing ceramic disclosed above need to be prepared according to the requirement on electric performance that each functional layer is different
The silicon carbide fibre of different resistivity, it is achieved acquire a certain degree of difficulty, and relatively costly；And microwave-absorbing ceramic reported above is many
Rotating fields, technique is complex, and technological requirement is higher.The problem existed for above patent, in No. ZL201410128311.6
State's patent discloses microwave-absorbing ceramic of a kind of single layer structure composite material of silicon carbide and preparation method thereof, its simple in construction, and thickness is relatively
Thin, but the Modulatory character of dielectric constant is strong, is only capable of realizing the suction wave energy of specific band, can design space less.
Summary of the invention
The technical problem to be solved is, overcomes the deficiency and defect mentioned in background above technology, it is provided that a kind of resistance to height
Temperature high impedance surface radar absorbing and preparation method thereof；Utilize high impedance surface and the ceramic matric composite technology system of combining
The high temperature resistant high impedance surface absorbing material of standby one-tenth, the electromagnetic property that high impedance surface both can have been utilized excellent makes absorbing material inhale ripple
Performance has stronger designability and more preferable absorbing property；Ceramic matric composite system advantage can be utilized again to make suction ripple
Material has preferable heat-resisting quantity and mechanical property.
For solving above-mentioned technical problem, the technical scheme that the present invention proposes is:
A kind of high temperature resistant high impedance surface radar absorbing, for double-decker, including being in the medium substrate layer of bottom and being in
The high impedance surface layer on top layer, described medium substrate layer is that oxide fibre strengthens oxide-base composite；Described high impedance table
Surface layer is mainly made up of the high temperature resistant resistance coating in periodic patterns.The high impedance surface depending on medium substrate layer can realize
Absorption and decay to electromagnetic wave.
Above-mentioned absorbing material, it is preferred that described oxide fibre strengthens oxide-base composite and includes that quartz fibre strengthens stone
English based composites, aluminosilicate fibre strengthen aluminosilicate based composites, mullite fiber strengthens mullite composite
Or alumina fibre strengthens alumina matrix composite.These several continuous oxidation fibres that the present invention chooses strengthen oxide and are combined
Material can not only ensure mechanical property and the thermal shock resistance that absorbing material product had, moreover it is possible to ensures that absorbing material has resistance to
High temperature, antioxygenic property, after it is covered by the high temperature resistant resistance coating on upper strata, still have required electrical property.
Above-mentioned absorbing material, it is preferred that the material system of described high temperature resistant resistance coating is that ruthenic oxide system glass base resistance is coated with
Layer.Ruthenic oxide system glass base resistive coating ensure that absorbing material has high temperature resistant and that resistance characteristic is stable advantage.
Above-mentioned absorbing material, it is preferred that the periodic patterns of described high temperature resistant resistance coating refers to the pros of distribution in matrix form
Shape paster pattern, the length of side of aforementioned square patch place matrix unit is 12mm～21mm, the length of side of described square patch
It is 0.5～0.8 with the ratio of the length of side of matrix unit.
Above-mentioned absorbing material, it is preferred that the thickness of described high temperature resistant resistance coating is 0.01～0.04mm；Described medium substrate
The thickness of layer is 2～5mm.The thickness selecting this resistive coating ensure that resistance value meets requirement；Choose this medium substrate layer
Thickness can not only ensure that absorbing material is light, thin, but also can guarantee that the high impedance surface layer being attached to this medium substrate layer can
Its high temperature resistant and absorbing property of best performance.
As a total inventive concept, the present invention also provides for the preparation method of a kind of above-mentioned absorbing material, comprises the following steps:
(1) choose and prepare medium substrate: choose suitable continuous oxidation fibres enhancing oxide-base according to design requirement and be combined
Material, as media substrate materials, prepares corresponding composite subsequently, finally, according to the design thickness of medium substrate to multiple
Condensation material carries out machining, obtains required medium substrate；
(2) prepare high impedance surface layer: use silk-screen printing technique, will be used for preparing the coating print of described high temperature resistant resistance coating
After the medium substrate surface that system is prepared in step (1), drying and sintering, obtain described high temperature resistant high impedance surface radar-wave absorbing
Material.
Above-mentioned preparation method, it is preferred that in described step (2), the preparation method of high temperature resistant resistance coating is as follows: by glass
Through temperature melting 1h～3h of 1300 DEG C～1500 DEG C after material powder mix homogeneously, then the glass melt obtained is poured into from
Sub-water carries out quenching, obtains glass, then glass bead is worn into elder generation and RuO after glass dust2After powder mix homogeneously again with organic carrier
Mix homogeneously makes high temperature resistant resistance coating；
In wherein said frit powder body, the mass percent of each chemical constituent is respectively as follows:
SiO230%～50%；
Al2O310%～25%；
PbO 12%～25%；
MgO 5%～15%；
CaO 5%～10%；
ZnO 3～10%；
BaO 2%～8% and B2O31%～5%.
Above-mentioned glass bead is worn into the process of glass dust and is carried out ball milling with acetone for ball-milling medium in agate jar, the technique of ball milling
During, ball material mass ratio is (2～3): 1, and rotational speed of ball-mill is 380r/min～450r/min, and Ball-milling Time is 6h～12h；
Powder body after ball milling crosses 200 mesh～400 mesh sieves.
Above-mentioned glass dust and RuO2The mixed process of powder mixes in planetary gravity mixer, the revolution of planetary gravity blender
Speed 1280rpm～1500rpm, rotational velocity is the 30%～60% of revolution speed, mixing time 60～120min.
Above-mentioned glass and RuO2The mixed process of mixed powder and organic carrier carry out in three-roll grinder, three-roll grinder
Rotating speed is 250～450r/min, and grinding mixing time is 3～6h.
Above-mentioned preparation method, it is preferred that in described step (2), RuO2Powder body accounts for glass dust and RuO2Powder gross mass
45%～85%, in described high temperature resistant resistance coating, the mass fraction of organic carrier is 25%～20%；Organic carrier is mainly by quality
Mark be 80%～90% the celluloid of tributyl citrate, 2%～5%, 10%～15% lecithin composition.
Above-mentioned preparation method, it is preferred that in described step (2), during employing silk-screen printing technique, meshcount is 180～300
Mesh, printing pass is 1～3 time；Temperature in dry run is 150 DEG C～250 DEG C, and drying time is 2h～4h；In sintering process
Peak firing temperature be 1000 DEG C～1050 DEG C, the programming rate in sintering process is 15 DEG C/min～20 DEG C/min, during sintering
Between be 10min～120min.
Above-mentioned preparation method, it is preferred that in described step (2), high temperature resistant resistance dope viscosity is 170～300pa s.
Compared with prior art, it is an advantage of the current invention that:
(1) the high temperature resistant high impedance surface radar absorbing of the present invention is to strengthen oxide composite with continuous oxidation fibres
For medium substrate, high impedance surface layer is the thinnest and is sintered in medium substrate surface, utilizes high impedance surface and ceramic base composite wood
Material technology combines and is prepared as high temperature resistant high impedance surface absorbing material, on the one hand, can utilize the electromagnetism that high impedance surface is excellent
Characteristic makes absorbing material absorbing property have stronger designability and more preferable absorbing property；On the other hand, it is possible to use pottery
Porcelain based composites system advantage makes absorbing material have preferable temperature tolerance and mechanical property, thus has preferable mechanical property
And thermal shock resistance, such that it is able to realize inhaling the integration of the multi-functionals such as ripple, carrying and solar heat protection.
(2) the high temperature resistant high impedance surface radar absorbing of the present invention can tolerate the high temperature of at least 1000 DEG C, has preferably
Heat-resisting quantity and excellent non-oxidizability.
(3) present invention high temperature resistant high impedance surface radar absorbing, has surmounted traditional material microstructure composition and has determined broad perspectives
Can pattern, the electromagnetic performance of material can be controlled by the electromagnetic structure of regulation sub-wavelength, can be in the less situation of thickness
Absorbing property needed for lower realization, thus alleviate the weight of product, meet the lightweight demand of parts.
(4) the high temperature resistant high impedance surface radar absorbing simple in construction that the present invention obtains, whole step of preparation process is simple,
Industrialized production can be efficiently applied to.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention high temperature resistant high impedance surface radar absorbing.
Fig. 2 is the high temperature resistant resistance coating photo of preparation in the embodiment of the present invention 1.
Fig. 3 is the high temperature resistant high impedance surface radar absorbing flat board sample photo of preparation in the embodiment of the present invention 1.
Fig. 4 be in the embodiment of the present invention 1 preparation the room temperature of high temperature resistant high impedance surface radar absorbing, 1000 DEG C and
The reflectance curve of room temperature is recovered after 1000 DEG C of examinations.
Detailed description of the invention
For the ease of understanding the present invention, below in conjunction with Figure of description and preferred embodiment, invention herein is done more comprehensively, carefully
Cause ground to describe, but protection scope of the present invention is not limited to specific embodiment.
Unless otherwise defined, with those skilled in the art, all technical term used hereinafter is generally understood that implication is identical.This
Technical term used in literary composition is intended merely to describe the purpose of specific embodiment, is not intended to limit the scope of the invention.
Unless otherwise specified, the various raw materials used in the present invention, reagent, instrument and equipment etc. all can be purchased by market
Can buy or can be prepared by existing method.
Embodiment 1:
The high temperature resistant high impedance surface radar absorbing of a kind of present invention, as it is shown in figure 1, include the medium substrate being in bottom
Be in the high impedance surface layer on top layer, medium substrate is positioned at reflection by lining；Wherein, media substrate materials chooses mullite fibre
Dimension strengthens mullite composite, the thickness d=3.0mm of medium substrate；High impedance surface layer is by the resistance to height in periodic patterns
Temperature resistive coating (with ruthenic oxide as conductive phase, the lead borosilicate glass ruthenic oxide system glass base resistive coating as binding agent)
Composition, thickness is 0.02mm；The periodic patterns of high temperature resistant resistance coating is the square patch pattern of distribution in matrix form, just
Length of side a=13.32mm of square patch place matrix unit, the length of side of square patch with the ratio of the length of side of matrix unit is
X=0.63.
The preparation method of the high temperature resistant high impedance surface radar absorbing of the present embodiment, comprises the following steps:
(1) medium substrate is prepared: choose mullite fiber according to design requirement and strengthen mullite composite material as medium substrate material
Material, subsequently, uses sol-gel technology to prepare mullite fiber and strengthens mullite composite material, and composite is carried out machinery
Processing, obtains the medium substrate that thickness is 3.0mm；
(2) high temperature resistant resistance coating is prepared:
(a) smelting glass: each chemical constituent content is respectively SiO245%, Al2O315%, PbO12%, MgO 8%,
CaO 5%, ZnO 7%, BaO 5%, B2O3The frit powder body mix homogeneously of 3%, loads in platinum crucible, more together
Being placed in Muffle furnace, be raised to 1400 DEG C with the heating rate of 20 DEG C/min, melting 3h, subsequently, by the glass melt after fusing
Pour into and deionized water carries out quenching, obtain glass dregs；
B () pulverizes glass: the glass dregs obtained is carried out in agate jar ball milling, with acetone as ball-milling medium, and ball material matter
Amount than be 2:1, rotating speed is 450r/min, and Ball-milling Time is 8h, ball milling complete after 100 DEG C dry 1h, cross 250 mesh sieves,
To glass dust；
(c) batch mixing: by the glass dust obtained and RuO2Powder according to the ratio that mass ratio is 45:55 at planetary gravity mixer
Middle batch mixing, the revolution speed of blender is 1460rpm, and rotational velocity is the 30% of revolution speed, and mixing time is 120min；
D () prepares coating: first tributyl citrate, celluloid and lecithin are joined according to the mass ratio of 80:5:15
Make organic carrier, subsequently, by the glass prepared in above-mentioned steps (c) and RuO2Mixed powder and organic carrier press 75:25
Mass ratio mixing, then in three-roll grinder grind batch mixing, three-roll grinder rotating speed is 300r/min, three-roll grinder mix
The material time is 3h, obtains high temperature resistant resistance coating (viscosity of coating is 250Pa s), and its photo is as shown in Figure 2；
(3) high impedance surface layer is prepared: use silk-screen printing technique (meshcount 250 mesh is printed 1 time), by step (2)
The high temperature resistant resistance coating of preparation is printed on medium substrate surface prepared by step (1), and subsequently, drying (is incubated at 250 DEG C
2h) with sintering process (peak firing temperature 1000 DEG C, programming rate is 20 DEG C/min, sintering time 10min), high impedance table
Surface layer is just sintered in medium substrate surface, and (high impedance surface layer thickness is 0.02mm, and high temperature resistant resistance coating has in matrix form
Distribution square patch pattern, the length of side of square patch place matrix unit is 13.32mm, the length of side of square patch with
The ratio of the length of side of matrix unit is 0.63), i.e. obtain the high temperature resistant high impedance surface radar absorbing of the present invention, its flat board
Photo is as shown in Figure 3.
Test the present embodiment high temperature resistant high impedance surface radar absorbing in the range of 4～8GHz, room temperature, 1000 DEG C,
Being returned to the reflectance under three state of temperatures of room temperature after 1000 DEG C of examinations, as shown in Figure 4, test result finds, absorbing material
Under three state of temperatures, the reflectance in the range of 4～8GHz is respectively less than-5.5dB.
Embodiment 2:
The high temperature resistant high impedance surface radar absorbing of a kind of present invention, as it is shown in figure 1, include the medium substrate being in bottom
Be in the high impedance surface layer on top layer, medium substrate is positioned at reflection by lining；Wherein, media substrate materials chooses aluminium oxide fibre
Dimension strengthens alumina matrix composite, the thickness d=2.6mm of medium substrate；High impedance surface layer is by the resistance to height in periodic patterns
Temperature resistive coating (with ruthenic oxide as conductive phase, the lead borosilicate glass ruthenic oxide system glass base resistive coating as binding agent)
Composition, the thickness of resistive coating is 0.03mm；The periodic patterns of high temperature resistant resistance coating is the square patch of the distribution in matrix form
Sheet pattern, length of side a=18.87mm of square patch place matrix unit, the length of side of square patch and the length of side of matrix unit
Ratio be x=0.74.
The preparation method of the high temperature resistant high impedance surface radar absorbing of the present embodiment, comprises the following steps:
(1) medium substrate is prepared: choose alumina fibre according to design requirement and strengthen alumina composite material as medium substrate material
Material, subsequently, uses sol-gel technology to prepare alumina fibre and strengthens alumina composite material, and composite is carried out machinery
Processing, obtains the medium substrate that thickness is 2.6mm；
(2) high temperature resistant resistance coating is prepared:
(a) smelting glass: each chemical constituent content is respectively SiO238%, Al2O322%, PbO12%, MgO 8%,
CaO 7%, ZnO 5%, BaO 4%, B2O3The frit powder body of 4% is uniformly mixed according to a ratio, and loads in platinum crucible,
It is placed in the most together in Muffle furnace, is raised to 1450 DEG C with 20 DEG C/min, melting 2.5h, subsequently, pours into the glass melt after fusing
Deionized water carries out quenching, obtains glass dregs；
B () pulverizes glass: for ball-milling medium, glass dregs is carried out ball milling with acetone in agate jar, and ball material mass ratio is 2:
1, rotating speed is 450r/min, and Ball-milling Time is 12h, and ball milling dries 1h, excessively 300 mesh sieves in 100 DEG C after completing, and obtains glass
Powder；
(c) batch mixing: by glass dust and RuO2Powder according to ratio batch mixing in planetary gravity mixer of mass ratio 48:52,
The revolution speed of planetary gravity blender is 1500rpm, and rotational velocity is the 40% of revolution speed, and mixing time is 120min；
D () prepares coating: first tributyl citrate, celluloid and lecithin are joined according to the mass ratio of 80:5:15
Make organic carrier.Subsequently, by the glass prepared in above-mentioned steps (c) and RuO2Mixed powder and organic carrier press 78:22
Mass ratio mixing, then in three-roll grinder grind batch mixing, three-roll grinder rotating speed is 300r/min, grind mixing time
For 3h, obtain high temperature resistant resistance coating (viscosity of coating is 300Pa s)；
(3) high impedance surface layer is prepared: use silk-screen printing technique (meshcount 300 mesh is printed 2 times), by step (2)
The high temperature resistant resistance coating of middle preparation is printed on medium substrate surface prepared by step (1), and subsequently, drying (is protected at 250 DEG C
Temperature 2h) and sintering process (peak firing temperature 1000 DEG C, programming rate is 20 DEG C/min, sintering time 30min), high resistant
Resistance to surface layer is just sintered in medium substrate surface prepared by step (1), and (thickness of high impedance surface layer is 0.03mm, high impedance
There is on surface layer in matrix form the square patch pattern of distribution, length of side 18.87mm of square patch place matrix unit,
The length of side of square patch and the ratio 0.74 of the length of side of matrix unit), i.e. obtain the high temperature resistant high impedance surface radar of the present invention
Absorbing material.
Test the present embodiment prepare high temperature resistant high impedance surface radar absorbing in the range of 8～12GHz, room temperature, 1000 DEG C,
Being returned to the reflectance under three state of temperatures of room temperature after 1000 DEG C of examinations, test result finds, it is under three state of temperatures,
-10dB it is respectively less than in the range of 8～12GHz.
Claims (10)
1. a high temperature resistant high impedance surface radar absorbing, it is characterised in that described absorbing material is double-decker, including
Being in the medium substrate layer of bottom and be in the high impedance surface layer on top layer, described medium substrate layer is that oxide fibre strengthens oxidation
Thing based composites；Described high impedance surface layer is mainly made up of the high temperature resistant resistance coating in periodic patterns.
2. absorbing material as claimed in claim 1, it is characterised in that described oxide fibre strengthens oxide-base composite
Strengthen silica matrix composites including quartz fibre, aluminosilicate fibre strengthens aluminosilicate based composites, mullite fiber increases
Strong mullite composite or alumina fibre strengthen alumina matrix composite.
3. absorbing material as claimed in claim 1, it is characterised in that the material system of described high temperature resistant resistance coating is dioxy
Change ruthenium system glass base resistive coating.
4. the absorbing material as described in any one of claims 1 to 3, it is characterised in that the periodicity of described high temperature resistant resistance coating
Pattern refers in matrix form the square patch pattern of distribution, the length of side of aforementioned square patch place matrix unit be 12mm～
21mm, the length of side of described square patch is 0.5～0.8 with the ratio of the length of side of matrix unit.
5. the absorbing material as described in any one of claims 1 to 3, it is characterised in that the thickness of described high temperature resistant resistance coating is
0.01～0.04mm；The thickness of described medium substrate layer is 2～5mm.
6. the preparation method of the absorbing material as described in any one of Claims 1 to 5, it is characterised in that comprise the following steps:
(1) choose and prepare medium substrate:
(2) prepare high impedance surface layer: use silk-screen printing technique, will be used for preparing the coating print of described high temperature resistant resistance coating
After the medium substrate surface that brush is prepared in step (1), drying and sintering, i.e. obtain described high temperature resistant high impedance surface radar and inhale
Wave material.
7. preparation method as claimed in claim 6, it is characterised in that in described step (2), high temperature resistant resistance coating
Preparation method is as follows: by temperature melting 1h～3h through 1300 DEG C～1500 DEG C after frit powder body mix homogeneously, then will
To glass melt pour into deionized water carry out quenching, obtain glass, then glass bead worn into elder generation and RuO after glass dust2Powder mixes
Mix homogeneously with organic carrier again after closing uniformly and make high temperature resistant resistance coating；
In wherein said frit powder body, the mass percent of each chemical constituent is respectively as follows:
SiO230%～50%；
Al2O310%～25%；
PbO 12%～25%；
MgO 5%～15%；
CaO 5%～10%；
ZnO 3～10%；
BaO 2%～8% and B2O31%～5%.
8. preparation method as claimed in claim 7, it is characterised in that in described step (2), RuO2Powder body accounts for glass dust
And RuO2The 45%～85% of powder gross mass, in described high temperature resistant resistance coating, the mass fraction of organic carrier is 20%～25%.
9. preparation method as claimed in claim 6, it is characterised in that in described step (2), use silk-screen printing technique
During meshcount be 180～300 mesh, print pass be 1～3 time；Temperature in dry run is 150 DEG C～250 DEG C, dry
The dry time is 2h～4h；Peak firing temperature in sintering process is 1000 DEG C～1050 DEG C, and the programming rate in sintering process is
15 DEG C/min～20 DEG C/min, sintering time is 10min～120min.
10. preparation method as claimed in claim 6, it is characterised in that in described step (2), high temperature resistant resistance coating glues
Degree is 170～300pa s.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610330896.9A CN106007804B (en) | 2016-05-18 | 2016-05-18 | A kind of high temperature resistant high impedance surface radar absorbing and preparation method thereof |
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| CN107555968A (en) * | 2017-08-30 | 2018-01-09 | 中国人民解放军国防科技大学 | High-temperature-resistant wave-absorbing wedge and preparation method thereof |
| CN109720027A (en) * | 2019-03-05 | 2019-05-07 | 中南大学 | A kind of high-temperature-resistant structure absorbing material and preparation method thereof based on metal coating |
| CN109830809A (en) * | 2019-02-21 | 2019-05-31 | 南京邮电大学 | A kind of multi-layer annular Terahertz Meta Materials wave absorbing device |
| CN109956667A (en) * | 2017-12-26 | 2019-07-02 | 北京有色金属研究总院 | A kind of alkali corrosion resistance glass coating resistant to high temperatures and preparation method thereof |
| CN111170753A (en) * | 2020-01-21 | 2020-05-19 | 烟台大学 | Circuit-screen-containing ceramic wave-absorbing material with high-temperature resistance and preparation method thereof |
| CN111733595A (en) * | 2020-06-30 | 2020-10-02 | 中国人民解放军国防科技大学 | High-temperature antioxidant flexible conductive oxide ceramic fiber fabric composite material and preparation method thereof |
| CN114603937A (en) * | 2022-03-09 | 2022-06-10 | 电子科技大学 | High-temperature-resistant radar infrared compatible stealth material and preparation method thereof |
| CN114621728A (en) * | 2020-12-10 | 2022-06-14 | 南京航空航天大学 | High-temperature-resistant broadband wave-absorbing structure composite material and preparation method thereof |
| CN115073005A (en) * | 2022-07-21 | 2022-09-20 | 西安宏星电子浆料科技股份有限公司 | Anti-precipitation LTCC insulating medium slurry |
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| CN107555968A (en) * | 2017-08-30 | 2018-01-09 | 中国人民解放军国防科技大学 | High-temperature-resistant wave-absorbing wedge and preparation method thereof |
| CN109956667A (en) * | 2017-12-26 | 2019-07-02 | 北京有色金属研究总院 | A kind of alkali corrosion resistance glass coating resistant to high temperatures and preparation method thereof |
| CN109830809A (en) * | 2019-02-21 | 2019-05-31 | 南京邮电大学 | A kind of multi-layer annular Terahertz Meta Materials wave absorbing device |
| CN109720027A (en) * | 2019-03-05 | 2019-05-07 | 中南大学 | A kind of high-temperature-resistant structure absorbing material and preparation method thereof based on metal coating |
| CN111170753B (en) * | 2020-01-21 | 2022-05-17 | 烟台大学 | Circuit-screen-containing ceramic wave-absorbing material with high-temperature resistance and preparation method thereof |
| CN111170753A (en) * | 2020-01-21 | 2020-05-19 | 烟台大学 | Circuit-screen-containing ceramic wave-absorbing material with high-temperature resistance and preparation method thereof |
| CN111733595A (en) * | 2020-06-30 | 2020-10-02 | 中国人民解放军国防科技大学 | High-temperature antioxidant flexible conductive oxide ceramic fiber fabric composite material and preparation method thereof |
| CN111733595B (en) * | 2020-06-30 | 2023-01-03 | 中国人民解放军国防科技大学 | High-temperature oxidation-resistant flexible conductive oxide ceramic fiber fabric composite material and preparation method thereof |
| CN114621728A (en) * | 2020-12-10 | 2022-06-14 | 南京航空航天大学 | High-temperature-resistant broadband wave-absorbing structure composite material and preparation method thereof |
| CN114603937A (en) * | 2022-03-09 | 2022-06-10 | 电子科技大学 | High-temperature-resistant radar infrared compatible stealth material and preparation method thereof |
| CN115073005A (en) * | 2022-07-21 | 2022-09-20 | 西安宏星电子浆料科技股份有限公司 | Anti-precipitation LTCC insulating medium slurry |
| CN115073005B (en) * | 2022-07-21 | 2022-11-08 | 西安宏星电子浆料科技股份有限公司 | Anti-precipitation LTCC insulating medium slurry |
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