CN101186130B - Ceramic matrix layered material with high wave absorbing efficiency and preparation method - Google Patents
Ceramic matrix layered material with high wave absorbing efficiency and preparation method Download PDFInfo
- Publication number
- CN101186130B CN101186130B CN 200710171918 CN200710171918A CN101186130B CN 101186130 B CN101186130 B CN 101186130B CN 200710171918 CN200710171918 CN 200710171918 CN 200710171918 A CN200710171918 A CN 200710171918A CN 101186130 B CN101186130 B CN 101186130B
- Authority
- CN
- China
- Prior art keywords
- layer
- ceramic
- sio
- cnt
- wave
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Abstract
The invention relates to a ceramic basic layer-shaped material with high adsorption efficiency and the preparation method. The invention is characterized in that one end of the ceramic basic layer-shaped material is a wave-permeable layer and the other end is a reflection layer, and the middle is at least one layer of wave-adsorption layer; the preparation process is that ceramic slurry is firstly prepared; after that, continuous carbon fiber (Cf) is dipped in the slurry for coating, and Cp-ceramic blank with a certain dimension is prepared and arranged on bottom layer of a graphite mold; after that, carbon nano-pipe (CNTs)/ceramic powder is added, and the layer-shaped material with gradual resistance is obtained by hot pressing and sintering. The method has slight effect on the CNTs; arrangement types of the Cf in different directions can eliminate anisotropism and further improve the whole mechanic performance of the material; the whole multi-layer material is done with hot pressing to be formed once, and is characterized by simple process, low production cost, etc.
Description
Technical field
The invention relates to a kind of ceramic matrix layered material and preparation method of high wave absorbing efficiency, belong to the functional composite material technical field.
Technical background
CNT has uniqueness and excellent mechanics and physical property (Popov VN, Mater Sci EngR 2004,43:61-102; Lau KT, Hui D, Compos Part B Eng 2002,33:263-277), thereby these performances that how to take full advantage of it have become the focus of research.The preparation carbon nano tube compound material is one of practicable method.Ning Jinwei etc. had once reported carbon nano-pipe/ceramic composite material and the preparation method (Ning Jinwei, Zhang Junji, Pan Yubai, Huang Liping, Guo Jingkun, Qiu Fagui, ZL:03129563.0) with microwave absorbing function.Employing fast sol-the gel methods such as Xiang Changshu prepare composite granule, the CNT for preparing behind the hot pressed sintering/silicon oxide chunks composite material has excellent microwave attenuation performance (Xiang CS, Pan YB, Liu XJ, Sun XW, Shi XM, Guo JK, Appl Phys Lett 2005,87 (12): 123103).It further studies show that, the microwave attenuation performance of composite strengthens rapidly along with the increase of content of carbon nanotubes.But the increase of content of carbon nanotubes can cause composite to become conductor from insulator, thereby has strengthened the reflection of composite material surface to incident electromagnetic wave, and this is very disadvantageous for absorbing material.In order to address this problem, we have calculated the different two-layer CNT/silicon dioxide composite material of composition with the transmission line principle, the result shows that this stratiform design is expected to reduce surface reflection (Xiang CS when improving absorbing property, Yang J, Zhu Y, PanYB, Guo JK, J Inorg Mater2007,22 (1): 101-105).The polyurethane base material with carbon element that the external people such as Motojima have also reported multilayer has better electro-magnetic wave absorption performance and (the Motojima S of surface reflection still less than the composite of individual layer, Noda Y, Hoshiya S, Hishikawa Y, J Appl Phys 2003,94 (4): 2325-2330).Therefore, in order further to improve the wave absorbing efficiency of CNT/silica system, design and preparation CNT/silica gradient stratified material are practicable.
On the other hand, in the test of absorbing property, usually select metallic plate as total reflection layer.This makes us expect continuous carbon fibre, and when it was axially parallel with the direction of an electric field of incident electromagnetic wave, electromagnetic wave is had good reflecting properties, and (Carbon 2002,40:445-467) for Wu JH, Chung DDL.Add carbon fiber and silica substrate and also have good physics and chemical compatibility (Jia DC, Zhou Y, Lei TC, .J Eur Ceramics Soc 2003,23:801-808), thereby be expected to increase continuous carbon fibre/silica reflecting layer on the basis of CNT/silica gradient stratified material, and select suitable temperature hot pressed sintering one-shot forming.The people such as Hiza of Japan had once reported the Multilayer Microwave Absorption Materials take organic matter as matrix of similar structures, between layers with silicone layer connection (Hiza M, the Yamizaki H of thickness less than 0.1mm, Sugihara K, So T, U.S.Patent, 4923736).And the present report that does not also have the ceramic base absorbing material of this unique texture.Therefore on the basis that does not affect the performance of CNT own, reduce surface reflection with the design of gradient stratiform, further strengthen absorption efficiency with continuous carbon fibre as reflecting medium, use the hot-pressing sintering technique one-shot forming, both avoided the impact of silicones articulamentum, simplified again technique, ceramic base absorbing material and the preparation method of this unique texture have great importance.
Summary of the invention
The object of the present invention is to provide a kind of ceramic matrix layered material and preparation method of high wave absorbing efficiency.Preparation process is at first with continuous carbon fibre (C
f) be impregnated in ready made pottery (Ceramics) slurry and carry out hanging, then natural drying moulding after directed the winding is cut into C
f/ Ceramics biscuit also places the bottom of graphite jig; CNTs/Ceramics powder with different CNTs (CNTs) content joins in the graphite grinding tool in order successively afterwards; The hot pressed sintering one-shot forming obtains the stratified material of the high wave absorbing efficiency of impedance transition mechanism under the condition of optimizing.
The preparation method of the ceramic matrix layered material of a kind of high wave absorbing efficiency provided by the invention is characterized in that concrete steps are (seeing Fig. 1 for details):
(a) be 2: 1 in mass ratio with binding agent polyvinyl alcohol (PVA) aqueous solution of pottery (Ceramics) powder and 1-12wt% and deionized water or absolute ethyl alcohol: 5-10: ball milling mixing 12-36h prepared the Ceramics slurry in 1: 2; Must adopt absolute ethyl alcohol to replace deionized water to the non-oxide ceramics powder, in order to avoid introduce oxonium ion, reduce absorbing property.
(b) with continuous carbon fibre (C
f) be impregnated in the Ceramics slurry of step (a) preparation and carry out hanging, directedly twine its natural drying moulding of relief, then be cut into the C of certain size
fThen/Ceramics biscuit arranges stack with biscuit by the difference of machine direction, and places the bottom of graphite jig, C in the layer
fContent be 1-80wt%; Machine direction is to equaling between 90 ° greater than 0 °.
(c) CNT and the ceramic based material of preparation different content are as suction ripple layer: the CNTs/Ceramics powder of ball milling 12-36 hour and different CNTs (CNTs) content that sieves is joined in the ready graphite jig of step (b) in descending order successively by content; The quality percentage composition of CNT greater than 0 less than or equal to 45%; When content of carbon nanotubes is 0, it then is the wave transparent ceramic layer.
(d) under the protective atmosphere of the pressure of 20-30Mpa and inert gas, obtain the ceramic base stratiform absorbing material of impedance transition mechanism in 1300-1800 ℃ of hot pressed sintering 10-60min one-shot forming.
One end of described ceramic matrix layered material is wave permeation layer, and the other end is the reflecting layer, and the centre is the suction ripple layer of at least one deck; Described wave permeation layer is ceramic layer; The reflecting layer is the compound ceramic layer of carbon fiber, or is the compound ceramic layer of carbon fiber and superimposed layer by the compound ceramic layer of the carbon fiber of different arrangement modes; The quality percentage composition 1%-80% of carbon fiber wherein, it is that the quality percentage composition is the CNT of X% and the composite of ceramic layer that Middle-gradient is inhaled the ripple layer, and the quality percentage composition of CNT increases near reflection layer successively in gradient gradual change from the suction ripple layer adjacent with wave permeation layer; 0＜X≤45.
Described ceramic layer is oxide or non-oxidized substance, and oxide is SiO
2, Al
2O
3, ZrO
2Or a kind of in the mullite; Non-oxidized substance is Si
3N
4Or SiC.
What need emphasize is wave permeation layer, and the ceramic base of reflecting layer and suction ripple layer must be got the same ceramic material.Different ceramic materials often ftractures because of expansion coefficient difference.Certainly, it also is possible being close such as the coefficient of expansion.
The ceramic matrix layered material of a kind of high wave absorbing efficiency provided by the invention and preparation method's characteristics are:
(1) do not need original CNTs carried out the preliminary treatment such as acidifying, oxidation, thus very little to the performance impact of CNTs itself.
(2) the CNTs/Ceramics gradient layer adds C
f/ Ceramics reflecting layer, the structure of this uniqueness not only can reduce surface reflection with the gradient stratiform design of impedance transition mechanism, and can use C
fThe reflex of/Ceramics layer further strengthens absorption efficiency.
(3) C
f/ Ceramics echo area is by the C of different arrangement modes
fStacked adding, can eliminate anisotropy and the further whole mechanical property that promotes material.Described different arrangement mode refers to C
fOrientation different, can between 0-90 °, appoint and get arrangement mode, but common reflecting layer is two-layer, and C
fMutually vertical.(example 4)
(4) whole multilayer material can be once hot-forming, and technique is simple, and cost is low.
(5) in theory, the number of plies of middle in gradient gradual change suction ripple layer can nothing be placed restrictions on, but considers technologic feasibility, and the number of plies is not intended too much, and general 2-10 layer is advisable, and described stratified material THICKNESS CONTROL is between 0.5mm-50mm.
Description of drawings
Preparation technology's flow chart of Fig. 1 high wave absorbing efficiency stratified material as an example of silica example provided by the invention
The structural representation of the high wave absorbing efficiency ceramic matrix layered material of Fig. 2 as an example of silica example
The light micrograph of the silica matrix composites of Fig. 3 four floor height wave absorbing efficiencies
The suction ripple principle schematic of the silica matrix composites of Fig. 4 four floor height wave absorbing efficiencies
The insertion loss of the silica matrix composites of Fig. 5 seven floor height wave absorbing efficiencies
The return loss of the silica matrix composites of Fig. 6 seven floor height wave absorbing efficiencies
The specific embodiment
Further specify embodiment and effect with following non-limiting embodiment:
What the present embodiment prepared is four layers of silica based absorbing material, the middle ripple layer X=2.5 and 5 that inhale.
In the ball grinder of 600mL with 50g silica (SiO
2) polyvinyl alcohol (PVA) aqueous solution and the 50mL deionized water (H of powder, 20mL 8.5wt%
2O) mix, by the ball action of 200g agate ball, obtain SiO behind the 24h
2Slurry.Then with continuous carbon fibre (C
f) be impregnated into SiO
2Carry out hanging in the slurry, directed its natural drying moulding of relief, the 30*35mm that then is cut into of twining
2C
f/ SiO
2Biscuit, and place the bottom of graphite jig.Simultaneously, in other ball grinder with the CNT of certain content (CNTs, X=0,2.5 and 5 grams) and SiO
2(100-X gram) and 70mL absolute ethyl alcohol (EtOH) mix, by 300g agate ball medium ball milling 24h.Afterwards at 100 ℃ of dry 2h, crossing and having obtained CNTs content behind 200 mesh sieves is 0,2.5 and the CNTs/SiO of 5wt%
2(X=0 is corresponding to pure SiO for powder
2Powder).At last with the CNTs/SiO for preparing
2Powder joins in the above ready graphite jig from high to low successively by CNT content, at pressure and the pure nitrogen gas (N of 30Mpa
2) protective atmosphere under, 1300 ℃ of hot pressed sintering 30min one-shot forming obtains four layers of silica based absorbing material (idiographic flow is as shown in Figure 1).
Four layers of silica based absorbing material according to the described composition of the present embodiment are by SiO
2Wave permeation layer, mass percent are 5% CNT and 95%SiO
2The suction ripple layer that forms, mass percent is 10% CNT and 90%SiO
2The suction ripple layer and the compound SiO of carbon fiber that form
2The reflecting layer forms.
Fig. 3 is the light micrograph of silica matrix composites of four floor height wave absorbing efficiencies of the present embodiment preparation.Can see comparatively obvious five zones of pattern difference from the rectangular of Fig. 3 left side, (a) on right side, (b), (c), (d) four figure have then represented respectively C
f/ SiO
2Reflecting layer, 5wt%CNTs/SiO
2Inhale ripple layer, 2.5wt%CNTs/SiO
2Inhale ripple layer and SiO
2The typical pattern of wave permeation layer, and rectangular (e) district, left side is a transition region, it forms reason and is still waiting further research.From Fig. 3 (a), can also see many and the C hot pressing perpendicular direction
f(among the figure shown in the black arrow).
Fig. 4 is the suction ripple principle schematic of four layers of composite of the present embodiment preparation.(its power is P for the electromagnetic wave of incident
I), it is easy to pass through SiO
2Wave permeation layer arrives 2.5wt%CNTs/SiO
2Inhale on the ripple bed boundary.Again enter wave permeation layer except the minority electromagnetic wave is reflected this moment, and most electromagnetic waves enter into to be inhaled the ripple layer and be attenuated and absorb.When electromagnetic wave arrives 2.5wt%CNTs/SiO
2Inhale ripple layer and 5wt%CNTs/SiO
2When inhaling place, ripple bed boundary, most electromagnetic wave continues to enter into 5wt%CNTs/SiO
2Suction ripple layer is attenuated and absorbs, even also will be at 2.5wt%CNTs/SiO at the electromagnetic wave of at the interface reflection
2Suction ripple layer again is attenuated and absorbs.By 5wt%CNTs/SiO
2Electromagnetic wave after inhaling the decay of ripple layer and absorbing will reach C
f/ SiO
2The reflecting layer.This moment, it had good reflecting properties to electromagnetic wave because continuous carbon fibre axially parallel with the direction of an electric field of incident electromagnetic wave, again was attenuated and absorbed so nearly all electromagnetic wave is reflected again resorption ripple layer.In the test of absorbing property, can obtain echo power (P with the incident electromagnetic wave homonymy
R), opposite side just can obtain transmitted wave power (P
T).By top analysis as can be known, this four layers of silica based absorbing material P
RWith P
TAll less, wave absorbing efficiency can be improved.
What the present embodiment prepared is four layers of alumina base absorbing material, the middle ripple layer X=5 and 10 that inhale.
In the ball grinder of 600mL with 50g silica (Al
2O
3) polyvinyl alcohol (PVA) aqueous solution and the 50mL deionized water (H of powder, 20mL 8.5wt%
2O) mix, by the ball action of 200g agate ball, obtain Al behind the 24h
2O
3Slurry.Then with continuous carbon fibre (C
f) be impregnated into Al
2O
3Carry out hanging in the slurry, directed its natural drying moulding of relief, the 30*35mm that then is cut into of twining
2C
f/ Al
2O
3Biscuit, and place the bottom of graphite jig.Simultaneously, in other ball grinder with the CNT of certain content (CNTs, X=0,5 and 10 grams) and Al
2O
3(100-X gram) and 70mL absolute ethyl alcohol (EtOH) mix, by 300g agate ball medium ball milling 24h.Afterwards at 100 ℃ of dry 2h, crossing and having obtained CNTs content behind 200 mesh sieves is 0,5 and the CNTs/Al of 10wt%
2O
3(X=0 is corresponding to pure Al for powder
2O
3Powder).At last with the CNTs/Al for preparing
2O
3Powder joins in the above ready graphite jig from high to low successively by CNTs content, at pressure and the pure nitrogen gas (N of 30Mpa
2) protective atmosphere under, 1400 ℃ of hot pressed sintering 30min one-shot forming obtains four layers of alumina base absorbing material.
According to the described four layers of Al of the present embodiment
2O
3Base wave-absorbing material is by Al
2O
3Wave permeation layer, mass percent are 0.5% CNT and 95% Al
2O
3The suction ripple layer of compound composition, quality percentage composition are 10% CNT and 90%Al
2O
3The suction ripple layer of compound composition and the compound Al of carbon fiber
2O
3The reflecting layer forms.
The present embodiment is to increase on the basis of embodiment 1 to inhale the ripple number of plies and content of carbon nanotubes, has prepared six layers of silica based absorbing material, the middle ripple layer X=2.5,7.5,15 and 22.5 that inhale.
In the ball grinder of 600mL with 50g silica (SiO
2) polyvinyl alcohol (PVA) aqueous solution and the 50mL deionized water (H of powder, 20mL 8.5wt%
2O) mix, by the ball action of 200g agate ball, obtain SiO behind the 24h
2Slurry.Then with continuous carbon fibre (C
f) be impregnated into SiO
2Carry out hanging in the slurry, directed its natural drying moulding of relief, the 30*35mm that then is cut into of twining
2C
f/ SiO
2Biscuit, and place the bottom of graphite jig.Simultaneously, in other ball grinder with the CNT of certain content (CNTs, X=0,2.5,7.5,15 and 22.5 grams) and SiO
2(100-X gram) and 70mL absolute ethyl alcohol (EtOH) mix, by 300g agate ball medium ball milling 24h.Afterwards at 100 ℃ of dry 2h, crossing and having obtained CNTs content behind 200 mesh sieves is 0,2.5,7.5,15 and the CNTs/SiO of 22.5wt%
2(X=0 is corresponding to pure SiO for powder
2Powder).At last with the CNTs/SiO for preparing
2Powder joins in the above ready graphite jig from high to low successively by CNT content, at pressure and the pure nitrogen gas (N of 30Mpa
2) protective atmosphere under, 1300 ℃ of hot pressed sintering 30min one-shot forming obtains six layers of silica based absorbing material.
By SiO according to the described six layers of silica based absorbing material of the present embodiment
2Wave permeation layer, quality percentage composition are 2.5% CNT and 97.5%SiO
2Suction ripple layer, the quality percentage composition that forms is 7.5% CNT and 92.5%SiO
2Suction ripple layer, the quality percentage composition that forms is 15% CNT and 85%SiO
2Suction ripple layer, the quality percentage composition that forms is 22.5% CNT and 77.5%SiO
2The suction ripple layer and the compound SiO of carbon fiber that form
2The reflecting layer forms.
The present embodiment is to increase a C on the basis of embodiment 3
f/ SiO
2The reflecting layer, the C in this reflecting layer
fOrthogonal in direction and the previous reflecting layer, thus prepared seven layers of silica based absorbing material, and Middle-gradient is inhaled ripple layer X=5,10,20 and 45.
In the ball grinder of 600mL with 50g silica (SiO
2) polyvinyl alcohol (PVA) aqueous solution and the 50mL deionized water (H of powder, 20mL 8.5wt%
2O) mix, by the ball action of 200g agate ball, obtain SiO behind the 24h
2Slurry.Then with continuous carbon fibre (C
f) be impregnated into SiO
2Carry out hanging in the slurry, then its natural drying moulding of directed winding relief is cut into C
fThe orthogonal 30*35mm of direction
2Two C
f/ SiO
2Biscuit, and place the bottom of graphite jig.Simultaneously, in other ball grinder with the CNT of certain content (CNTs, X=0,5,10,20,45 grams) and SiO
2(100-X gram) and 70mL absolute ethyl alcohol (EtOH) mix, by 300g agate ball medium ball milling 24h.At 100 ℃ of dry 2h, excessively obtained the CNTs/SiO that CNTs content is 0,5,10,20,45wt% behind 200 mesh sieves afterwards
2(X=0 is corresponding to pure SiO for powder
2Powder).At last with the CNTs/SiO for preparing
2Powder joins in the above ready graphite jig from high to low successively by CNT content, at pressure and the pure nitrogen gas (N of 30Mpa
2) protective atmosphere under, 1300 ℃ of hot pressed sintering 30min one-shot forming obtains seven layers of silica based absorbing material.
According to the described seven layers of silica based absorbing material of the present embodiment successively by SiO
2Wave permeation layer, reflecting layer are two-layer, and ground floor is the compound SiO of carbon fiber
2Arrange to arrange with the ground floor carbon fiber with second layer carbon fiber and be 90 °, component is identical with ground floor, and suction ripple layer is followed successively by the quality percentage composition from closing on wave permeation layer be 5% CNT and 95%SiO
2Suction ripple layer, the quality percentage composition that forms is 10% CNT and 90%SiO
2Suction ripple layer, the quality percentage composition that forms is 20% CNT and 80%SiO
2Suction ripple layer, the quality percentage composition that forms is 45% CNT and 55%SiO
2Form.
Fig. 5 is the insertion loss of seven layers of silica based absorbing material of the present embodiment preparation.Insertion loss (Insertion Loss, IL) is defined as:
IL＝10log(P
T/P
I)，
In the formula, P
TBe transmitted wave power, P
IBe incident power, the unit of IL represents with decibel (dB).As can be seen from the above equation, the IL value is less, then P
T/ P
IBe worth littlely, the electromagnetic wave attenuation performance of material is better.As can be seen from Figure 5, composite is in the scope of 8-12GHz, and all less than-39dB, illustrative material has good electromagnetic wave attenuation performance to its IL value.
Fig. 6 is the return loss of seven layers of silica based absorbing material of the present embodiment preparation.Return loss (Return Loss, R) is defined as:
R＝10log(P
R/P
I)，
In the formula, P
RBe echo power, P
IBe incident power, the unit of R also uses decibel (dB) expression.As can be seen from the above equation, the R value is less, then P
R/ P
IBe worth littlely, the echo of material surface is fewer, and is more favourable to inhaling ripple.Fig. 6 (a) and 6 (b) represent respectively electromagnetic wave from C
f/ SiO
2Reflecting surface and pure SiO
2Return loss during the incident of wave transparent face.Can find out, composite is in the scope of 8-12GHz, and the value of its b curve illustrates that all less than the value of a curve electromagnetic wave is from pure SiO
2Return loss during the incident of wave transparent face is little, and from C
f/ SiO
2Return loss during reflecting surface incident is large.Above these illustrate surperficial wave permeation layer, middle gradual change absorbed layer and back C
fThe mutually perpendicular C of direction
f/ SiO
2The Multilayer Microwave Absorption Materials in reflecting layer can improve wave absorbing efficiency when reducing surface reflection, be a kind of up-and-coming absorbing material.
Embodiment 5
The ceramic matrix that the present embodiment uses is Si
3N
4Or SiC, replace deionized water with absolute ethyl alcohol when making slurry, next time hot-forming at 1600-1800 ℃ of inert atmosphere at last, the C of the second layer in the two-layer reflecting layer
fOriented is greater than 0 °, less than arbitrary orientation between 90 °.All the other are with embodiment 4.
Claims (3)
1. the ceramic matrix layered material of a high wave absorbing efficiency, an end that it is characterized in that described ceramic matrix layered material is wave permeation layer, and the other end is the reflecting layer, and the centre is at least two layers suction ripple layer; Described wave permeation layer is ceramic layer; The reflecting layer is the compound ceramic layer of carbon fiber, or is the compound ceramic layer of carbon fiber and the superimposed layer of the compound ceramic layer of the carbon fiber of arranging by different modes; Wherein the quality percentage composition of carbon fiber is 1%-80%, it is the composite that CNT and ceramic layer form that Middle-gradient is inhaled the ripple layer, wherein the quality percentage composition of CNT is X%, and the quality percentage composition of CNT increases near reflection layer successively in gradient gradual change from the suction ripple layer adjacent with wave permeation layer; And 0＜X≤45; Wave permeation layer, reflecting layer and the ceramic layer of inhaling the ripple layer must be got the ceramic material that same ceramic material or the coefficient of expansion are close,
Described ceramic layer is oxide or non-oxidized substance, and oxide is SiO
2, Al
2O
3, ZrO
2A kind of with in the mullite; Non-oxidized substance is Si
3N
4Or SiC.
2. the ceramic matrix layered material of high wave absorbing efficiency as claimed in claim 1, the quality percentage composition that it is characterized in that CNT is X, and 0＜X≤22.5.
3. the ceramic matrix layered material of high wave absorbing efficiency as claimed in claim 1 is characterized in that described ceramic matrix layered material is by SiO
2Wave permeation layer, quality percentage composition are 5% CNT and 95%SiO
2The the first suction ripple layer that forms, the quality percentage composition is 10% CNT and 90%SiO
2The second suction ripple layer and the compound SiO of carbon fiber that forms
2The reflecting layer forms four layers of silica based absorbing material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200710171918 CN101186130B (en) | 2007-12-07 | 2007-12-07 | Ceramic matrix layered material with high wave absorbing efficiency and preparation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200710171918 CN101186130B (en) | 2007-12-07 | 2007-12-07 | Ceramic matrix layered material with high wave absorbing efficiency and preparation method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101186130A CN101186130A (en) | 2008-05-28 |
| CN101186130B true CN101186130B (en) | 2013-01-02 |
Family
ID=39478848
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200710171918 Expired - Fee Related CN101186130B (en) | 2007-12-07 | 2007-12-07 | Ceramic matrix layered material with high wave absorbing efficiency and preparation method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101186130B (en) |
Families Citing this family (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102180695B (en) * | 2011-03-04 | 2013-01-23 | 中国人民解放军国防科学技术大学 | Wave-absorbing ceramic made of silicon carbide composite material and preparation method thereof |
| CN102219523B (en) * | 2011-03-07 | 2013-03-27 | 潍坊介纳新材料有限公司 | Low-temperature co-firing ceramic wave-absorbing material and preparation method thereof |
| WO2012126256A1 (en) * | 2011-03-18 | 2012-09-27 | 深圳光启高等理工研究院 | Impedance matching component and hybrid wave-absorbing material |
| CN102249652B (en) * | 2011-04-29 | 2014-09-10 | 中国科学院上海硅酸盐研究所 | Fiber composite material with microwave absorbing function and preparation method thereof |
| CN103601477B (en) * | 2013-11-19 | 2014-12-31 | 宜宾红星电子有限公司 | Preparation process of absorber with low voltage standing-wave ratio |
| CN104902735A (en) * | 2015-05-07 | 2015-09-09 | 武汉理工大学 | High-temperature wave absorbing metamaterial and preparation method thereof |
| CN105599392B (en) * | 2016-01-20 | 2018-02-06 | 广西大学 | Glued board with Electro Magnetic Compatibility and preparation method thereof |
| CN106518034B (en) * | 2016-11-08 | 2019-04-05 | 太原科技大学 | Carried magnetic metal simple-substance mullite ceramic composite wave-suction material preparation method |
| CN108218438B (en) * | 2016-12-15 | 2021-03-26 | 中国航空工业集团公司济南特种结构研究所 | Silicon nitride broadband wave-transparent material |
| CN107382352A (en) * | 2017-06-28 | 2017-11-24 | 常州市顺旭商贸有限公司 | A kind of preparation method of silicon magnesium ceramics based composite fibre |
| CN108046797A (en) * | 2017-11-30 | 2018-05-18 | 华中科技大学 | It is a kind of to utilize preparation method of crystal whisker toughened zirconium oxide thin plate and products thereof |
| CN108705819A (en) * | 2017-12-29 | 2018-10-26 | 天诺光电材料股份有限公司 | Anti- bullet/absorbent structure integrated composite and preparation method thereof |
| CN108819384B (en) * | 2018-05-28 | 2020-09-08 | 中南大学 | Electromagnetic fiber wave-absorbing material with multilayer structure and preparation method thereof |
| CN110498686B (en) * | 2019-09-02 | 2021-08-20 | 中建材蚌埠玻璃工业设计研究院有限公司 | Interlayer silicon carbide crucible with microwave thermal structure and preparation method thereof |
| CN114804902B (en) * | 2022-05-25 | 2023-07-04 | 西北工业大学 | Gradient bearing wave-transparent stealth integrated ceramic matrix composite material and preparation method thereof |
| CN115157786B (en) * | 2022-06-02 | 2023-04-18 | 湖北瑞宇空天高新技术有限公司 | High-temperature-resistant composite structure for 1000-DEG C-resistant metamaterial and preparation method thereof |
| CN115322003B (en) * | 2022-07-08 | 2023-02-28 | 西安建筑科技大学 | Self-closed layered fiber wave-absorbing material and preparation method thereof |
| CN115196951B (en) * | 2022-07-19 | 2023-02-24 | 湖南工业大学 | Modified carbon fiber-mullite ceramic wave-absorbing material with multilayer structure and preparation method thereof |
| CN115534421A (en) * | 2022-09-26 | 2022-12-30 | 中国人民解放军国防科技大学 | Ultrathin broadband high-temperature-resistant structural wave-absorbing material and preparation method thereof |
| CN116081686A (en) * | 2023-02-13 | 2023-05-09 | 中国人民解放军国防科技大学 | Nano ZrO 2 C heat-resistant wave-absorbing material and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1514684A (en) * | 2003-06-27 | 2004-07-21 | 中国科学院上海硅酸盐研究所 | Carbon nano-pipe/ceramic composite material possessing microwave absorption function and its preparation method |
| EP1496033A2 (en) * | 2003-07-07 | 2005-01-12 | Ngk Insulators, Ltd. | Aluminum nitride sintered body containing carbon fibers and method of manufacturing the same |
| CN1631848A (en) * | 2004-12-03 | 2005-06-29 | 清华大学 | Carbon/carbon composite material based on oriented nano carbon tube and its preparation process |
-
2007
- 2007-12-07 CN CN 200710171918 patent/CN101186130B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1514684A (en) * | 2003-06-27 | 2004-07-21 | 中国科学院上海硅酸盐研究所 | Carbon nano-pipe/ceramic composite material possessing microwave absorption function and its preparation method |
| EP1496033A2 (en) * | 2003-07-07 | 2005-01-12 | Ngk Insulators, Ltd. | Aluminum nitride sintered body containing carbon fibers and method of manufacturing the same |
| CN1631848A (en) * | 2004-12-03 | 2005-06-29 | 清华大学 | Carbon/carbon composite material based on oriented nano carbon tube and its preparation process |
Non-Patent Citations (5)
| Title |
|---|
| JP特开2000-86365A 2000.03.28 |
| JP特开2005-33015A 2005.02.03 |
| JP特开平10-236879A 1998.09.08 |
| JP特开平9-307268A 1997.11.28 |
| 向长淑等.碳纳米管/石英复合材料的电磁波吸收性能.《无机材料学报》.2007,第22卷(第1期),第101-105页. * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101186130A (en) | 2008-05-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101186130B (en) | Ceramic matrix layered material with high wave absorbing efficiency and preparation method | |
| Zeng et al. | Electromagnetic microwave absorption theory and recent achievements in microwave absorbers | |
| Sultanov et al. | Advances of 3D graphene and its composites in the field of microwave absorption | |
| CN107555940A (en) | Broadband wave-absorbing heat-insulation stealth composite material and preparation method thereof | |
| Yang et al. | A moisture‐driven actuator based on polydopamine‐modified MXene/bacterial cellulose nanofiber composite film | |
| Guo et al. | MOF-derived Co/C and MXene co-decorated cellulose-derived hybrid carbon aerogel with a multi-interface architecture toward absorption-dominated ultra-efficient electromagnetic interference shielding | |
| CN110421958B (en) | Preparation method of honeycomb-like high-thermal-conductivity material | |
| CN108116002B (en) | A kind of sandwich thermally protective materials and its manufacturing method with high slab strength | |
| CN114369284B (en) | Preparation method of CNF-MXene/silver nanowire porous composite film | |
| CN105218103A (en) | The preparation method of a kind of Graphene/ceramic laminar material | |
| Xiong et al. | Recent advances in non-biomass and biomass-based electromagnetic shielding materials | |
| CN111039671B (en) | Composite for preparing ceramic material, preparation method thereof and ceramic capacitor | |
| Bai et al. | Recent advances of magnetism-based microwave absorbing composites: an insight from perspective of typical morphologies | |
| CN109943134A (en) | A kind of aeroge-hollow sphere composite heat-insulated material and preparation method thereof | |
| CN115073151A (en) | Ceramic fiber aerogel and preparation method thereof | |
| Zhou et al. | Gradient carbonyl-iron/carbon-fiber reinforced composite metamaterial for ultra-broadband electromagnetic wave absorption by multi-scale integrated design | |
| CN105355777A (en) | Method for preparing PNN-PZN-PZT multi-layer parallel piezoelectric thick film on aluminium oxide substrate | |
| KR102286850B1 (en) | Poruos ceramic having excellent mechanical property and insulation and method for manufacturing thereof | |
| CN102122557A (en) | Low magnetic ferrite material and manufacturing method thereof | |
| TWI290778B (en) | Soft piezoelectric plate structure and synthetic method | |
| CN110819044B (en) | Preparation method of graphene-ferroferric oxide/polyvinylidene fluoride composite film | |
| Yang et al. | Multifunctional Carbon Fiber Reinforced C/SiOC Aerogel Composites for Efficient Electromagnetic Wave Absorption, Thermal Insulation, and Flame Retardancy | |
| Fu et al. | Quadrangular cone carbon-constructed effective 3D network for a lightweight and broadband microwave absorbent | |
| CN102610740B (en) | Method for producing spiral parallel high-performance piezoelectric composite materials | |
| Ye et al. | Creation of Wood‐Based Hierarchical Superstructures via In Situ Growth of ZIF‐8 for Enhancing Mechanical Strength and Electromagnetic Shielding Performance |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130102 Termination date: 20151207 |
|
| EXPY | Termination of patent right or utility model |