CN106535595A - FeNiCo wave-absorbing material - Google Patents
FeNiCo wave-absorbing material Download PDFInfo
- Publication number
- CN106535595A CN106535595A CN201610989149.6A CN201610989149A CN106535595A CN 106535595 A CN106535595 A CN 106535595A CN 201610989149 A CN201610989149 A CN 201610989149A CN 106535595 A CN106535595 A CN 106535595A
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- China
- Prior art keywords
- fenico
- layer
- neoprene
- wave
- absorbing material
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Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K9/00—Screening of apparatus or components against electric or magnetic fields
- H05K9/0073—Shielding materials
- H05K9/0081—Electromagnetic shielding materials, e.g. EMI, RFI shielding
- H05K9/0088—Electromagnetic shielding materials, e.g. EMI, RFI shielding comprising a plurality of shielding layers; combining different shielding material structure
Abstract
The invention discloses a FeNiCo wave-absorbing material which consists of an impedance matching layer, a depletion layer and a reflection layer from top to bottom, the impedance matching layer is formed by dispersing 2~8wt% of Fe<0.5>Ni<0.4>Co<0.1> powder into neoprene, the depletion layer is formed by dispersing hydroxyl iron powder into neoprene, and the reflection layer is formed by dispersing graphite into neoprene. The FeNiCo wave-absorbing material selects specific compositions from FeNiCo alloy powder, thereby generating an unforeseeable technical effect.
Description
Technical field
A kind of the present invention relates to new material technology field, more particularly to FeNiCo absorbing materials.
Background technology
With the development of modern science and technology, impact of the electromagenetic wave radiation to environment increasingly increases.Airport, machine flight because
Electromagnetic Interference cannot be taken off and overdue；The normal work of various electronic instrument for diagnosing and curing diseases devices can often be disturbed in hospital, mobile phone.Cause
This, administers electromagnetic pollution, finds a kind of material absorbing material that can be kept out and weaken electromagenetic wave radiation, it has also become material supply section
The big problem learned.
Absorbing material refer to can absorb, decaying projects the electromagnetic wave energy of material surface, and by electromagnetic energy by material
The dielectric loss in portion is converted into into the class functional material that the energy dissipation of the other forms such as heat energy is fallen.Absorbing material is by absorbing
Agent, adhesive and various auxiliary agents composition, the electromagnetic performance of wherein absorbent determines the quality of microwave absorbing coating performance, in cell material
Misusing for key is played in material.
Research confirms that ferrite wave-absorbing material performance is optimal, and it has, and absorption frequency range is high, absorbance is high, matching thickness is thin
The features such as.This materials application is can absorb in electronic equipment the electromagnetic radiation of leakage, the mesh for eliminating electromagnetic interference can be reached
's.According to the rule that electromagnetic wave is propagated from the high magnetic conductance direction of low magnetic steering in media as well, using high magnetic conductivity ferrite guiding electricity
Magnetic wave, by resonance, the emittance of a large amount of electromagnetic wave absorptions, then by coupling the energy conversion of electromagnetic wave into heat energy.
With the development of modern crafts, the requirement more and more higher to absorbing material, it is desirable to while wave-absorbing effect is preferable,
Possess preferable physical and mechanical propertiess, preferable heat-resisting quantity and working service simple etc..
The content of the invention
It is an object of the invention to propose a kind of FeNiCo absorbing materials, the absorbing property for enabling to material is significantly carried
Rise.
It is that, up to this purpose, the present invention is employed the following technical solutions：
A kind of FeNiCo absorbing materials, which is made up of impedance matching layer, depletion layer and reflecting layer from top to bottom, impedance matching
Fe of the layer by 2-8wt%0.5Ni0.4Co0.1Powder body is formed in being distributed to neoprene, and depletion layer is distributed to neoprene for hydroxy iron powder
Formed in rubber, reflecting layer is formed in neoprene by graphite dispersion.
By each magnetic micro-powder of comparison 0.5～6.0GHz low-frequency bands electromagnetic parameter situation of change, find Fe,
The magnetic loss performance of the Bimary and trinary alloy of Co.Ni is excellent more than Fe, Co, Ni unitary metal fine powder.NiCo and FeCo, be
The combination of magnetic loss better performances in binary alloy, they have excellent electromagnetic property, and phase structure is respectively solid solution, with
And Taenite systems.The Fe of the present invention0.5Ni0.4Co0.1Ternary alloy three-partalloy, phase structure are similarly Taenite systems (Fe, Ni), but lattice
Middle solid solution has entered Co, its μ " the maximum relative value in 0.5 6.0GHz has 1.9, and frequency range of the numerical value more than 1.4 is 4GHz.
Therefore, FeNiCo ternary alloy three-partalloys can be obtained than Fe, the electromagnetic performance that Ni.Co binary or unitary will be good.
The present invention is combined by specific recipe ingredient, devise impedance matching layer/depletion layer/reflecting layer composition three layers
Thin film, its positive wave-absorbing effect are significantly better than reverse side, the front membrane structure design it is correct.Suction of the present invention
Wave material,, when thickness is 0.2mm, its absorption maximum exceedes -30.3dB, excellent performance for which.
Specific embodiment
Technical scheme is further illustrated below by specific embodiment.
Embodiment 1
A kind of FeNiCo absorbing materials, which is made up of impedance matching layer, depletion layer and reflecting layer from top to bottom, impedance matching
Fe of the layer by 2wt%0.5Ni0.4Co0.1Powder body is formed in being distributed to neoprene, and depletion layer is distributed to neoprene rubber for hydroxy iron powder
Formed in glue, reflecting layer is formed in neoprene by graphite dispersion.
Embodiment 2
A kind of FeNiCo absorbing materials, which is made up of impedance matching layer, depletion layer and reflecting layer from top to bottom, impedance matching
Fe of the layer by 8wt%0.5Ni0.4Co0.1Powder body is formed in being distributed to neoprene, and depletion layer is distributed to neoprene rubber for hydroxy iron powder
Formed in glue, reflecting layer is formed in neoprene by graphite dispersion.
Comparative example 1
FeNiCo alloy powders are Fe0.4Ni0.4Co0.2, remaining is same as Example 1.
Comparative example 2
FeNiCo alloy powders are Fe0.6Ni0.3Co0.1, remaining is same as Example 2.
Absorbing material described in embodiment 1 and 2, absorption maximum exceed -30dB, and the absorption maximum of comparative example 1 and 2,
Below -20dB.The comparative illustration of embodiment 1-2 and comparative example 1-2, the present invention are selected specific from FeCoNi alloy powders
Composition, generate unforeseeable technique effect.
Claims (1)
1. a kind of FeNiCo absorbing materials, which is made up of impedance matching layer, depletion layer and reflecting layer from top to bottom, impedance matching layer
By the Fe of 2-8wt%0.5Ni0.4Co0.1Powder body is formed in being distributed to neoprene, and depletion layer is distributed to neoprene rubber for hydroxy iron powder
Formed in glue, reflecting layer is formed in neoprene by graphite dispersion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610989149.6A CN106535595A (en) | 2016-11-10 | 2016-11-10 | FeNiCo wave-absorbing material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610989149.6A CN106535595A (en) | 2016-11-10 | 2016-11-10 | FeNiCo wave-absorbing material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106535595A true CN106535595A (en) | 2017-03-22 |
Family
ID=58350732
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610989149.6A Pending CN106535595A (en) | 2016-11-10 | 2016-11-10 | FeNiCo wave-absorbing material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106535595A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1646000A (en) * | 2004-11-30 | 2005-07-27 | 横店集团东磁有限公司 | Electromagnetic wave interference preventive material and production thereof |
| CN101299914A (en) * | 2008-06-20 | 2008-11-05 | 广东工业大学 | Nanocrystalline ultra-fine alloy powder electromagnetic wave absorbent and preparation method thereof |
| CN102179965A (en) * | 2010-12-28 | 2011-09-14 | 中国航空工业集团公司北京航空材料研究院 | Three-layer composite wave-absorbing film and preparation method thereof |
-
2016
- 2016-11-10 CN CN201610989149.6A patent/CN106535595A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1646000A (en) * | 2004-11-30 | 2005-07-27 | 横店集团东磁有限公司 | Electromagnetic wave interference preventive material and production thereof |
| CN101299914A (en) * | 2008-06-20 | 2008-11-05 | 广东工业大学 | Nanocrystalline ultra-fine alloy powder electromagnetic wave absorbent and preparation method thereof |
| CN102179965A (en) * | 2010-12-28 | 2011-09-14 | 中国航空工业集团公司北京航空材料研究院 | Three-layer composite wave-absorbing film and preparation method thereof |
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| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170322 |