CN104786589A - Tunable wave absorbing material - Google Patents
Tunable wave absorbing material Download PDFInfo
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- CN104786589A CN104786589A CN201410020406.6A CN201410020406A CN104786589A CN 104786589 A CN104786589 A CN 104786589A CN 201410020406 A CN201410020406 A CN 201410020406A CN 104786589 A CN104786589 A CN 104786589A
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- absorbing material
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Abstract
The present invention discloses a tunable wave absorbing material containing glass-coated amorphous fibers. According to the present invention, the glass-coated amorphous fibers act as the electromagnetic wave reflection substrate in the tunable wave absorbing material, the magnetic performance of the glass-coated amorphous fibers affects the dielectric constant and the magnetic permeability of the tunable wave absorbing material, the dielectric constant and the magnetic permeability of the tunable wave absorbing material are changed when the magnetic performance of the glass-coated amorphous fibers is changed by the externally applied magnetic field or externally applied stress, and the dielectric constant and the magnetic permeability of the tunable wave absorbing material determine the resonance frequency point and the energy absorption rate, such that the resonance frequency point and the energy absorption rate of the tunable wave absorbing material can be tuned through the externally applied magnetic field or externally applied stress.
Description
Technical field
One in the present invention is tunable, and type absorbing material belongs to field of compound material.
Background technology
Along with the development of radar-reconnaissance technology, in order to improve battlefield survival, the Stealth Fighter of weaponry becomes extremely important.Stealth technology is divided into stealthy and Material-stealth two aspects of profile.Material-stealth just refers to that a large amount of absorbing material that uses carrys out attenuate incident radar wave in military target, reduces RCS.Absorbing material technology is the important channel effectively tackling radar-reconnaissance and detection, and also Shi Ge military power falls over each other the focus technology of research always.
The absorbing property of tradition absorbing material is generally non-tunable, and namely operating frequency and wave-absorbing effect are fixing, and when the other side's radar is changed electromagnetic frequency or added high-power, reduction was even lost efficacy by stealth effect.If a kind of tunable type absorbing material can be developed, changed resonant frequency point or the S. E. A. of absorbing material neatly by certain mode, realize its absorbing property tunableization, will important military significance be had undoubtedly.
Summary of the invention
The object of the invention is to carry out tuning absorbing material in order to develop a kind of outfield that can utilize to Absorbing Materials, containing glass bag amorphous fiber in this absorbing material.
Technical characteristic and the scheme of the tunable type absorbing material proposed in the present invention are as follows:
Tunable type absorbing material in the present invention is a kind of composite, is made up of matrix material and wave absorbing agent.
Containing glass bag amorphous fiber in wave absorbing agent in the present invention, this fiber is a kind of composite fibre be made up of amorphous inner core and glass outer layer.
Glass bag amorphous fiber in the present invention is standby by Taylor legal system, by melting the mode of rear drawing, and pull-out composite fibre; Again through rapid solidification, make the Formation of Amorphous Alloy melted.
The size range of the glass bag amorphous fiber in the present invention is: length is 1-30 millimeter; Amorphous inner core diameter 1-30 micron; Glass outer layer thickness 1-15 micron.
The composition of the amorphous inner core in the present invention contains Co, one or more elements in Fe, Mn, Ni; Containing Si and B; Rare earth or magnesium-yttrium-transition metal etc. may be added.
Glass bag amorphous fiber in the present invention has magneto-impedance effect, and under alternating current drives, its impedance can be subject to the impact of externally-applied magnetic field and change.
Glass bag amorphous fiber in the present invention has stress-impedance effect, and under alternating current drives, its impedance can be subject to the impact of applied stress and change.
Glass bag amorphous fiber in the present invention has native iron magnetic resonance effect.
The mass percent of the glass bag amorphous fiber in the present invention is 0.1%-30%.
CNT may be added, ferrite, carbon fiber, one or more of the materials such as cenosphere in wave absorbing agent in the present invention.
Matrix material in the present invention is rubber, resin, one or more of the materials such as fiberglass.
Glass bag amorphous fiber in the present invention is when being subject to externally-applied magnetic field or applied stress, and its domain structure can change, thus changes its magnetic property.
Glass bag amorphous fiber in the present invention serves as electromagnetic reflection base in tunable type absorbing material, and its magnetic property has an impact to the dielectric constant of tunable type absorbing material and magnetic conductivity; When externally-applied magnetic field or applied stress change the magnetic property of glass bag amorphous fiber, dielectric constant and the magnetic conductivity of tunable type absorbing material also change thereupon.
In the present invention, the dielectric constant of tunable type absorbing material and magnetic conductivity determine its resonant frequency point and S. E. A..
The resonant frequency point of the tunable type absorbing material in the present invention and S. E. A. can be undertaken tuning by externally-applied magnetic field or applied stress.
Accompanying drawing illustrates:
Fig. 1: glass bag amorphous fiber schematic diagram.
Fig. 2: the absorbing property of tunable type absorbing material is with the change of externally-applied magnetic field.
Detailed description of the invention:
First prepare foundry alloy rod according to required composition in the present invention, and choose the glass tube matched, the difference of the fusing point of foundry alloy and the operating temperature of glass tube is higher than 100 DEG C and be less than 350 DEG C.
In the present invention, glass bag amorphous fiber adopts Taylor legal system standby, specific as follows:
1, foundry alloy rod and glass tube is loaded;
2, Efco-Northrup furnace fusing foundry alloy is adopted;
3, the foundry alloy of fusing is utilized to be softened by glass tube;
4, adopt drawing mode to be extracted by silk, and be wound on receipts roll dies.
5, by regulating the parameter such as delivery rate, temperature, the stable of drawing process is kept.
Adopt aforesaid way to prepare continuous print glass bag amorphous wire, then continuous fibers are cut into the glass bag amorphous fiber of Len req.
In the present invention, the schematic diagram of glass bag amorphous fiber as shown in Figure 1, and 1 is glass bag amorphous fiber; 11 is the amorphous inner core of glass bag amorphous fiber; 12 is the glass outer layer of glass bag amorphous fiber.
In the present invention, glass bag amorphous fiber is mixed into matrix material as wave absorbing agent according to required ratio, makes it be evenly distributed in the middle of matrix material by modes such as stirrings, make absorbing material sheet material or coating.
CNT may be added, ferrite, carbon fiber, one or more of the materials such as cenosphere in wave absorbing agent in the present invention.
The present invention prepares the tunable absorbing material of absorbing property by above-mentioned embodiment.
Embodiment 1:
First CoFe base foundry alloy rod is prepared, fusing point 1025 DEG C of diameter 7mm in the present invention; Selection operating temperature is the glass tube of 800 DEG C, external diameter 20mm, wall thickness 2mm.
In the present invention, glass bag amorphous fiber adopts Taylor legal system standby, specific as follows:
1, foundry alloy rod and glass tube is loaded;
2, adopt Efco-Northrup furnace fusing foundry alloy, and be heated to 1200 DEG C;
3, the foundry alloy of fusing is utilized to be softened by glass tube;
4, adopt drawing mode to be extracted by silk, and be wound on receipts roll dies, receive silk speed 30 ms/min;
5, by regulating the parameter such as delivery rate, temperature, the stable of drawing process is kept.
Aforesaid way is adopted to prepare continuous print glass bag amorphous wire, amorphous inner core diameter 15 ± 5 microns; Glass outer layer thickness 5 ± 2 microns.
Again continuous fibers are cut into the glass bag amorphous fiber that length is 5 millimeters.
In the present invention using glass bag amorphous fiber as wave absorbing agent according to 15% mass percent be mixed into matrix material, resin chosen by matrix material, by stir make it be evenly distributed in the middle of matrix material, make absorbing material sheet material.
The present invention prepares the tunable absorbing material of absorbing property by above-described embodiment, and its absorbing property under magnetic field as shown in Figure 2.
Embodiment 2:
First CoFe base foundry alloy rod is prepared, fusing point 1025 DEG C of diameter 7mm in the present invention; Selection operating temperature is the glass tube of 800 DEG C, external diameter 20mm, wall thickness 2mm.
In the present invention, glass bag amorphous fiber adopts Taylor legal system standby, specific as follows:
1, foundry alloy rod and glass tube is loaded;
2, adopt Efco-Northrup furnace fusing foundry alloy, and be heated to 1200 DEG C;
3, the foundry alloy of fusing is utilized to be softened by glass tube;
4, adopt drawing mode to be extracted by silk, and be wound on receipts roll dies, receive silk speed 30 ms/min;
5, by regulating the parameter such as delivery rate, temperature, the stable of drawing process is kept.
Aforesaid way is adopted to prepare continuous print glass bag amorphous wire, amorphous inner core diameter 15 ± 5 microns; Glass outer layer thickness 5 ± 2 microns.
Again continuous fibers are cut into the glass bag amorphous fiber that length is 5 millimeters.
In the present invention using glass bag amorphous fiber as wave absorbing agent according to 15% mass percent be mixed into matrix material, be mixed into the CNT of 3% mass percent simultaneously, resin chosen by matrix material, making it be evenly distributed in the middle of matrix material, making absorbing material sheet material by stirring.
The present invention prepares the tunable absorbing material of absorbing property by above-described embodiment.
Embodiment 3:
First CoFe base foundry alloy rod is prepared, fusing point 1025 DEG C of diameter 7mm in the present invention; Selection operating temperature is the glass tube of 800 DEG C, external diameter 20mm, wall thickness 2mm.
In the present invention, glass bag amorphous fiber adopts Taylor legal system standby, specific as follows:
1, foundry alloy rod and glass tube is loaded;
2, adopt Efco-Northrup furnace fusing foundry alloy, and be heated to 1200 DEG C;
3, the foundry alloy of fusing is utilized to be softened by glass tube;
4, adopt drawing mode to be extracted by silk, and be wound on receipts roll dies, receive silk speed 30 ms/min;
5, by regulating the parameter such as delivery rate, temperature, the stable of drawing process is kept.
Aforesaid way is adopted to prepare continuous print glass bag amorphous wire, amorphous inner core diameter 15 ± 5 microns; Glass outer layer thickness 5 ± 2 microns.
Again continuous fibers are cut into the glass bag amorphous fiber that length is 5 millimeters.
In the present invention using glass bag amorphous fiber as wave absorbing agent according to 1: 5 ratio mix with glass fibre, glass bag amorphous fiber mass percent is 10%, add resin again, making it be evenly distributed in the middle of matrix material by stirring, making fiberglass absorbing material.
The present invention prepares the tunable absorbing material of absorbing property by above-described embodiment.
Claims (9)
1. outfield can be utilized to carry out a tuning absorbing material to Absorbing Materials, and this is tunable, and type absorbing material is a kind of composite, is made up of matrix material and wave absorbing agent, containing glass bag amorphous fiber in this absorbing material wave absorbing agent.
2. the glass bag amorphous fiber in claim 1 is a kind of composite fibre be made up of amorphous inner core and glass outer layer.
3. the glass bag amorphous fiber in claim 2 is standby by Taylor legal system, by melting the mode of rear drawing, and pull-out composite fibre; Again through rapid solidification, make the Formation of Amorphous Alloy melted.
4. the size range of the glass bag amorphous fiber in claim 2 is: length is 1-30 millimeter; Amorphous inner core diameter 1-30 micron; Glass outer layer thickness 1-15 micron.
5. the composition of the amorphous inner core in claim 2 contains Co, one or more elements in Fe, Mn, Ni; Containing Si and B; Rare earth or magnesium-yttrium-transition metal etc. may be added.
6., in the tunable type absorbing material in claim 1, the mass percent of glass bag amorphous fiber is 0.1%-30%.
7. CNT may be added in the wave absorbing agent in claim 1, ferrite, carbon fiber, one or more of the materials such as cenosphere.
8. the matrix material in claim 1 is rubber, resin, one or more of the materials such as fiberglass.
9. the resonant frequency point of the tunable type absorbing material in claim 1 and S. E. A. can be undertaken tuning by externally-applied magnetic field or applied stress.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410020406.6A CN104786589A (en) | 2014-01-17 | 2014-01-17 | Tunable wave absorbing material |
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| CN201410020406.6A CN104786589A (en) | 2014-01-17 | 2014-01-17 | Tunable wave absorbing material |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107949261A (en) * | 2017-11-15 | 2018-04-20 | 中国科学院宁波材料技术与工程研究所 | A kind of electromagnetic wave absorbent material and preparation method thereof |
| CN108039235A (en) * | 2017-12-27 | 2018-05-15 | 潘远新 | One kind inhales ripple flat data line |
| CN108171161A (en) * | 2017-12-27 | 2018-06-15 | 潘永森 | Portable type fingerprint identification device |
| CN111799570A (en) * | 2020-07-09 | 2020-10-20 | 西安交通大学 | Magnetic field regulation and control method for liquid wave absorption performance |
-
2014
- 2014-01-17 CN CN201410020406.6A patent/CN104786589A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107949261A (en) * | 2017-11-15 | 2018-04-20 | 中国科学院宁波材料技术与工程研究所 | A kind of electromagnetic wave absorbent material and preparation method thereof |
| CN108039235A (en) * | 2017-12-27 | 2018-05-15 | 潘远新 | One kind inhales ripple flat data line |
| CN108171161A (en) * | 2017-12-27 | 2018-06-15 | 潘永森 | Portable type fingerprint identification device |
| CN111799570A (en) * | 2020-07-09 | 2020-10-20 | 西安交通大学 | Magnetic field regulation and control method for liquid wave absorption performance |
| CN111799570B (en) * | 2020-07-09 | 2021-04-27 | 西安交通大学 | Magnetic field regulation and control method for liquid wave absorption performance |
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Addressee: Beijing Heng Wei Science and Technology Ltd. Document name: Notification of Passing Examination on Formalities |
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Application publication date: 20150722 |