JPS63248183A - Electromagnetic-wave sheilding material - Google Patents
Electromagnetic-wave sheilding materialInfo
- Publication number
- JPS63248183A JPS63248183A JP62082510A JP8251087A JPS63248183A JP S63248183 A JPS63248183 A JP S63248183A JP 62082510 A JP62082510 A JP 62082510A JP 8251087 A JP8251087 A JP 8251087A JP S63248183 A JPS63248183 A JP S63248183A
- Authority
- JP
- Japan
- Prior art keywords
- electromagnetic
- matrix
- shielding effect
- superconductor
- superconductors
- 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.)
- Pending
Links
- 239000000463 material Substances 0.000 title claims abstract description 24
- 239000002887 superconductor Substances 0.000 claims abstract description 18
- 239000011159 matrix material Substances 0.000 claims abstract description 14
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 10
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 10
- 239000011224 oxide ceramic Substances 0.000 claims abstract description 8
- 229910052574 oxide ceramic Inorganic materials 0.000 claims abstract description 8
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 8
- 229910052802 copper Inorganic materials 0.000 claims description 8
- 239000010949 copper Substances 0.000 claims description 8
- 229910000859 α-Fe Inorganic materials 0.000 claims description 7
- 229920005989 resin Polymers 0.000 claims description 5
- 239000011347 resin Substances 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 4
- 239000002245 particle Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 12
- 230000035699 permeability Effects 0.000 abstract description 7
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 239000004593 Epoxy Substances 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 238000009313 farming Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 239000000565 sealant Substances 0.000 description 1
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
７ この発明は、各種電子機器、人体などへの電磁波を
シールドする材料に関するものであり、特にシールド効
果の大きな電磁波シールド材に関するものである。[Detailed Description of the Invention] [Industrial Application Field] 7 The present invention relates to a material that shields electromagnetic waves from various electronic devices, the human body, etc., and particularly relates to an electromagnetic wave shielding material with a large shielding effect.
従来の電磁材シールド材は、鉄、銅、アルミニウムやフ
ェライトなど番そのまま用いたり、又（封脂などに粉末
や繊維の形で分散させた形で使用されている。Conventional electromagnetic material shielding materials are used as they are, such as iron, copper, aluminum, and ferrite, or in the form of powders or fibers dispersed in sealants, etc.
電磁波シールド効果としては、導電−＠／透磁率を大き
くしたり（反射損失）、又導電率×透磁率を大きくする
（吸収損失）ことでシールド効′Ｘ！：と高くする方法
が採られているが、ｆμ在用いられている鉄、銅、アル
ミニウムやフェライトなどではそれらの値に限界があり
、シールド効果として充分でなかった。The electromagnetic shielding effect can be increased by increasing the conductivity-@/magnetic permeability (reflection loss) or by increasing the conductivity x magnetic permeability (absorption loss). : However, there are limits to these values for iron, copper, aluminum, ferrite, etc. currently used in fμ, and the shielding effect was not sufficient.
ところで、最近高い超電導臨界一度を汀するｉ￥２ （
ヒ物セラミックス系の超電導材料が開発され、注目を浴
びている。これらの酸化物セラミックス系１；召電導の
中には、液体窒素の温度で超電導状態になるものがあり
、また１１来【・；は常温でも・旧主・ｊ事状態を示す
ものが示唆されている。By the way, i￥2 (
Superconducting materials based on amorphous ceramics have been developed and are attracting attention. Some of these oxide ceramic systems become superconducting at the temperature of liquid nitrogen, and it has been suggested that some of them exhibit a superconducting state even at room temperature. ing.
これらの、直重５セラミックスは、−：ｉ２：こ延性に
劣リ、加工性が悪いため、バルクの状態でシールド材に
使うと加工の面でコストがかかったり、機械的強度の点
で不利な点もある。These straight weight 5 ceramics have -:i2: poor ductility and poor workability, so if they are used for shielding materials in the bulk state, they will be costly in terms of processing and disadvantageous in terms of mechanical strength. There are also some points.
この発明は、かかる発明を解消するためになされたもの
であり、この発明の目的は、延性等の加工比に劣る超電
導材料でも電磁波シールド材として防用することができ
る様に、又、機械的強度の改ａをし、効果の大きい低コ
ストの電磁波シールド材を提供することにある。This invention was made in order to solve the above-mentioned problems, and the purpose of this invention is to enable even superconducting materials with inferior processing ratios such as ductility to be used as electromagnetic shielding materials, and to improve mechanical properties. The purpose of the present invention is to provide a low-cost electromagnetic wave shielding material that has improved strength and is highly effective.
Ｃ問題点を解決するための手段および作用〕この発明に
よる電磁波シールド材では酸化物セラミックスからなる
超′［ｄ導体を、樹脂、アルミニウム、銅又はフェライ
トおよびそれらの混合物からなるマトリックスに分散し
ているように構成されている。Means and operation for solving problem C] In the electromagnetic shielding material according to the present invention, a super'[d conductor made of oxide ceramics is dispersed in a matrix made of resin, aluminum, copper, ferrite, or a mixture thereof. It is configured as follows.
この発明において、超電導体として用いられる超電導材
料は、特に限定されるものではないが、Ｌａ−Ｂａ−Ｃ
ｕ−０系、Ｌａ−３ｒ−Ｃｕ−０系、Ｙ−Ｂａ−Ｃｕ−
０系などの材料が用いられる。In this invention, the superconducting material used as the superconductor is not particularly limited, but La-Ba-C
u-0 series, La-3r-Cu-0 series, Y-Ba-Cu-
Materials such as 0 series are used.
この発明に用いるマトリックスとしては、樹脂アルミニ
ウム、銅、又はフェライトおよびそれらの混合物が用い
られる。アルミニウムや銅を用いれば、それらの導電率
がシールド効果に寄与し、フェライトを用いらば透磁率
がシールド効果に寄与する。樹脂を用いると、樹脂自体
のシールド効果はないが、低コストで作製ができる。又
いずれの材料を用いてもマトリクスとして強度の向上を
はかることができる。As the matrix used in this invention, resin aluminum, copper, ferrite, and mixtures thereof are used. If aluminum or copper is used, their electrical conductivity will contribute to the shielding effect, and if ferrite is used, their magnetic permeability will contribute to the shielding effect. When resin is used, the resin itself does not have a shielding effect, but it can be manufactured at low cost. Furthermore, any material can be used as a matrix to improve the strength.
この発明のシールド材としての農法は特に限定されるも
のではないが、酸化物セラミックスを適当な熱処理を施
して、超電導特性を高めたのち、必要により粉砕してマ
トリックス材料粉末と混合して焼結などで一体化したり
、圧延、押出し、射出成型される。The farming method used as the shielding material of this invention is not particularly limited, but the oxide ceramics are subjected to appropriate heat treatment to enhance superconducting properties, and then crushed if necessary, mixed with matrix material powder, and sintered. It can be integrated, rolled, extruded, or injection molded.
この本発明の電磁波シールド材では、上述の様に酸化物
セラミックス超電導体が分散しているので、導電率が無
限大に大きく、又下部臨界磁界以下では透磁率が零であ
るので、導電率／透磁率比が無限大に大きくなり、特に
反射損失が大きくするので、すぐれた電磁波シールド効
果が得られる。In the electromagnetic shielding material of the present invention, since the oxide ceramic superconductor is dispersed as described above, the conductivity is infinitely large, and the magnetic permeability is zero below the lower critical magnetic field, so the conductivity/ Since the magnetic permeability ratio becomes infinitely large and the reflection loss becomes particularly large, an excellent electromagnetic wave shielding effect can be obtained.
又、マトリックスとして、１脂、胴、アルミニウム又は
フェライトおよびそれらの混合物のマトリックス中に超
電導体が分散されているので、機賊的特性の改善が得ら
れる。Furthermore, since the superconductor is dispersed in a matrix of monomer, aluminum, aluminum, or ferrite, and mixtures thereof, improved mechanical characteristics can be obtained.
本発明において、超電導体は１柵以下の粒径にすること
が望ましく、１ｍｍ以下にすることにより、超電導体特
性のうち、臨界電流密度を大きくとれる。又、本発明に
おいて、超電導が分散されているという状態は、超電導
体同志が必ずしもｉ４Ｉ Ｈしているという事を表現し
ているのではなく、お互いに接触している状態も表現し
ている。In the present invention, it is desirable that the superconductor has a grain size of 1 mm or less, and by setting the grain size to 1 mm or less, the critical current density among the superconductor characteristics can be increased. Furthermore, in the present invention, the state that the superconductors are dispersed does not necessarily represent that the superconductors are in i4IH, but also represents the state that the superconductors are in contact with each other.
第１図は、この発明の一実施例を示す断面図であり、１
は超電導体、２はマトリクスのアルミニウムである。FIG. 1 is a cross-sectional view showing one embodiment of the present invention.
is a superconductor, and 2 is aluminum of the matrix.
第２図は、本発明の別の一実施例であり、ｌは超電導体
、２はマトリクスの銅粒子、３はマトリクスのエポキシ
樹脂である。FIG. 2 shows another embodiment of the present invention, where l is a superconductor, 2 is a matrix of copper particles, and 3 is a matrix of epoxy resin.
この発明による電磁波シールド材は、超電導体をマトリ
クスに分散させており、導電率は無限大に大きく、透磁
率が零なので電磁波シールド効果特に反射損失が大きく
とれるので、効果が大きく、又マトリクスに分散させで
あるので＠械的強度が改良され、又延性に劣る酸化物セ
ラミックス超電導体が低コストで利用できる。The electromagnetic wave shielding material according to this invention has superconductors dispersed in a matrix, and has infinitely large electrical conductivity and zero magnetic permeability, so it has a large electromagnetic shielding effect, especially reflection loss, and is highly effective. Since it is a stranded material, its mechanical strength is improved, and oxide ceramic superconductors with poor ductility can be used at low cost.
第１図及び第２図は本発明の実施例を示す断面図である
。
図中、１は超電導体、
２はマトリクスの銅粒子
３はマトリクスのエポキシ１ｆｆｔ ＢＢを示す。FIGS. 1 and 2 are cross-sectional views showing embodiments of the present invention. In the figure, 1 is a superconductor, 2 is a matrix of copper particles 3 is a matrix of 1 fft BB epoxy.
Claims (3)
クスに分散してなることを特徴とする電磁波シールド材
。(1) An electromagnetic shielding material characterized by comprising superconductors made of oxide ceramics dispersed in a matrix.
ライトおよびそれらの混合物からなることを特徴とする
特許請求の範囲第（１）項記載の電磁波シールド材。(2) The electromagnetic shielding material according to claim (1), wherein the matrix is made of resin, aluminum, copper, ferrite, or a mixture thereof.
請求の範囲第（１）項又は第（２）項記載の電磁波シー
ルド材。(3) The electromagnetic shielding material according to claim (1) or (2), wherein the oxide ceramic has a particle size of 1 mm or less.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62082510A JPS63248183A (en) | 1987-04-02 | 1987-04-02 | Electromagnetic-wave sheilding material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62082510A JPS63248183A (en) | 1987-04-02 | 1987-04-02 | Electromagnetic-wave sheilding material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63248183A true JPS63248183A (en) | 1988-10-14 |
Family
ID=13776515
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62082510A Pending JPS63248183A (en) | 1987-04-02 | 1987-04-02 | Electromagnetic-wave sheilding material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63248183A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63248016A (en) * | 1987-04-03 | 1988-10-14 | Hitachi Ltd | Manufacture of superconductor |
| JPS63283083A (en) * | 1987-05-15 | 1988-11-18 | Hitachi Ltd | Composite body containing superconducting particle |
| JPS6450600A (en) * | 1987-08-21 | 1989-02-27 | Seiko Epson Corp | Magnetic shielding material |
| JPS6460638A (en) * | 1987-08-31 | 1989-03-07 | Dowa Mining Co | Filling or coating material for resin |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5145240A (en) * | 1974-10-16 | 1976-04-17 | Tokyo Electric Power Co | Anteiunyosochino seigyosochi |
-
1987
- 1987-04-02 JP JP62082510A patent/JPS63248183A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5145240A (en) * | 1974-10-16 | 1976-04-17 | Tokyo Electric Power Co | Anteiunyosochino seigyosochi |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63248016A (en) * | 1987-04-03 | 1988-10-14 | Hitachi Ltd | Manufacture of superconductor |
| JPS63283083A (en) * | 1987-05-15 | 1988-11-18 | Hitachi Ltd | Composite body containing superconducting particle |
| JPS6450600A (en) * | 1987-08-21 | 1989-02-27 | Seiko Epson Corp | Magnetic shielding material |
| JPS6460638A (en) * | 1987-08-31 | 1989-03-07 | Dowa Mining Co | Filling or coating material for resin |
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