JPS5879303A - Method of reflecting high frequency microwave - Google Patents
Method of reflecting high frequency microwaveInfo
- Publication number
- JPS5879303A JPS5879303A JP18009082A JP18009082A JPS5879303A JP S5879303 A JPS5879303 A JP S5879303A JP 18009082 A JP18009082 A JP 18009082A JP 18009082 A JP18009082 A JP 18009082A JP S5879303 A JPS5879303 A JP S5879303A
- Authority
- JP
- Japan
- Prior art keywords
- high frequency
- metal layer
- carbon
- reflecting high
- fibers
- 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
- 238000000034 method Methods 0.000 title claims description 9
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 14
- 239000002184 metal Substances 0.000 claims description 9
- 229910052751 metal Inorganic materials 0.000 claims description 9
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 7
- 239000004917 carbon fiber Substances 0.000 claims description 7
- 239000000835 fiber Substances 0.000 claims description 7
- 229910052759 nickel Inorganic materials 0.000 claims description 7
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 4
- 229910045601 alloy Inorganic materials 0.000 claims description 3
- 239000000956 alloy Substances 0.000 claims description 3
- 150000002739 metals Chemical class 0.000 claims description 3
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 3
- 229910017052 cobalt Inorganic materials 0.000 claims description 2
- 239000010941 cobalt Substances 0.000 claims description 2
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims description 2
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims description 2
- 229910052737 gold Inorganic materials 0.000 claims description 2
- 239000010931 gold Substances 0.000 claims description 2
- 229910052742 iron Inorganic materials 0.000 claims description 2
- 229910000831 Steel Inorganic materials 0.000 claims 1
- 239000003575 carbonaceous material Substances 0.000 claims 1
- 239000010959 steel Substances 0.000 claims 1
- 229910052799 carbon Inorganic materials 0.000 description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 5
- 239000004744 fabric Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 238000001465 metallisation Methods 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 239000002657 fibrous material Substances 0.000 description 2
- 238000007747 plating Methods 0.000 description 2
- 239000012783 reinforcing fiber Substances 0.000 description 2
- 229910021586 Nickel(II) chloride Inorganic materials 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000010426 asphalt Substances 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- RJTANRZEWTUVMA-UHFFFAOYSA-N boron;n-methylmethanamine Chemical compound [B].CNC RJTANRZEWTUVMA-UHFFFAOYSA-N 0.000 description 1
- 150000001721 carbon Chemical class 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- -1 hycobalt Chemical compound 0.000 description 1
- QMMRZOWCJAIUJA-UHFFFAOYSA-L nickel dichloride Chemical compound Cl[Ni]Cl QMMRZOWCJAIUJA-UHFFFAOYSA-L 0.000 description 1
- 229920000620 organic polymer Polymers 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 229920001721 polyimide Polymers 0.000 description 1
- 239000009719 polyimide resin Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000002310 reflectometry Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
- 239000012209 synthetic fiber Substances 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F11/00—Chemical after-treatment of artificial filaments or the like during manufacture
- D01F11/10—Chemical after-treatment of artificial filaments or the like during manufacture of carbon
- D01F11/12—Chemical after-treatment of artificial filaments or the like during manufacture of carbon with inorganic substances ; Intercalation
- D01F11/127—Metals
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q15/00—Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices
- H01Q15/14—Reflecting surfaces; Equivalent structures
- H01Q15/141—Apparatus or processes specially adapted for manufacturing reflecting surfaces
- H01Q15/142—Apparatus or processes specially adapted for manufacturing reflecting surfaces using insulating material for supporting the reflecting surface
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electromagnetism (AREA)
- Physics & Mathematics (AREA)
- Inorganic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- General Chemical & Material Sciences (AREA)
- Textile Engineering (AREA)
- Aerials With Secondary Devices (AREA)
- Laminated Bodies (AREA)
- Inorganic Fibers (AREA)
- Chemical Or Physical Treatment Of Fibers (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
複合繊維質材料、特にエボキン樹脂又はポリイミド樹脂
を用いたものを製造するために、補強繊維として炭素繊
維を使用することは公知であり、これら複合繊維質材料
は、例えば航空機構造材に利用されている。その上、こ
れら炭素繊維の性質はマイクロ波反射性であるが、この
効果は、１００Ｈｚｊでの周波数に限定される。DETAILED DESCRIPTION OF THE INVENTION It is known to use carbon fibers as reinforcing fibers to produce composite fibrous materials, especially those using evoquin resin or polyimide resin; Used in aircraft structural materials. Moreover, although the nature of these carbon fibers is microwave reflective, this effect is limited to frequencies at 100 Hzj.
１０ＧＨｚより大きい周波数の場合に、このマイクロ波
反射性は相当に低下し、その結果、興味ある７ ０ （
）Ｈｚ及びそれ以上の範囲においては、通常の炭素繊維
布は不満足なものである。これらの短波レーダービーム
の場合には、低い反射損失が要求されるので、従来の注
意は、金属布又は金属シートに向けられてきた。事実こ
れらの材料は、所望の嵐好な性質を示すが、それらはそ
の重量の理由で、従来は排除されることになるであろう
。For frequencies greater than 10 GHz, this microwave reflectivity decreases considerably, resulting in an interesting 70 (
)Hz and above, conventional carbon fiber cloths are unsatisfactory. In the case of these shortwave radar beams, low return losses are required and conventional attention has been directed to metal cloths or sheets. In fact, although these materials exhibit desirable stormy properties, they would conventionally be excluded because of their weight.
本発明の目的は、高周波マイクロ波の反射用に適尚な、
低重量材料を使用する方法を提供することにある。The object of the present invention is to provide a suitable method for reflecting high frequency microwaves.
The objective is to provide a method of using low weight materials.
意外にも、この目的は、金属化した炭素系若しくは繊維
を用いて、又はそれから製造したシート構造物を用いて
達成することができることが判明した。Surprisingly, it has been found that this objective can be achieved using metallized carbon-based or fibers or sheet structures made therefrom.
したがって本発明は、高周波マイクロ波の反射方法を提
供するものであシ、それは、金属化した炭素系若しくは
繊維又はそれから製造した繊維シート構造物をビーム行
路に持込むことを特徴とする。この金属化した炭素系及
び繊維又はそれから製造したシート構造物は、複合繊維
質材料において、それ自体で、又は補強繊維として使用
することができる。好適な金属には、ニッケル、コバル
ト、銅、金及び銀、又はこれら金属とその相互若しくは
鉄との合金が包含される。ニッケル及ヒコバルト、マた
コ１＜ルトーニッケルの組合せが好適である。この金属
層の厚さは、α０５〜１０μ惟、好ましくは［Ｌ１〜１
μｍである。異なる層の場合には、いずれの順序でも、
相互に化学的又は電気化学的に析出させることも可能で
あり、例えば、銅をめっき後、酸化防止のためにニッケ
ルめっき操作を行ってもよい。The invention therefore provides a method for reflecting high-frequency microwaves, which is characterized in that metallized carbon-based or fibers or fiber sheet structures made therefrom are introduced into the beam path. The metallized carbon systems and fibers or sheet structures made therefrom can be used on their own or as reinforcing fibers in composite fibrous materials. Suitable metals include nickel, cobalt, copper, gold and silver, or alloys of these metals with each other or with iron. Combinations of nickel, hycobalt, and nickel are preferred. The thickness of this metal layer is α05~10μ, preferably [L1~1
It is μm. For different layers, in any order:
It is also possible to chemically or electrochemically deposit each other. For example, after copper plating, nickel plating may be performed to prevent oxidation.
炭素繊維は、当業者において公知のものであり、それら
は各種め原料から、例えばセルロース誘導体、ｌリアク
リロニトリル繊維、及び特定の種−類のピッチ又はビチ
ューメンから製造することができる。Carbon fibers are known to those skilled in the art and they can be made from a variety of raw materials, such as cellulose derivatives, lyacrylonitrile fibers, and certain types of pitch or bitumen.
本発明に従って使用すべき金属化炭素繊維と比較すると
、他の金属孔繊維、例えば有機重合体の天然及び合成繊
維線、１０ＧＨｚより高いマイクロ波に対して満足な反
射を示さない。Compared to the metallized carbon fibers to be used according to the invention, other metal-porous fibers, such as natural and synthetic fiber lines of organic polymers, do not show satisfactory reflection for microwaves higher than 10 GHz.
この金属化炭素繊維布は、金属化操作によって導電性が
改嵐される点でも有利なものである。The metallized carbon fiber fabric is also advantageous in that its electrical conductivity is modified by the metallization operation.
その結果、金属層の厚さ及び特性に対応して、電光に対
する保躾までの範囲に及ぶ静電荷電に対する付加的防護
を達成することができる。As a result, depending on the thickness and properties of the metal layer, additional protection against electrostatic charges can be achieved, ranging up to protection against lightning.
金属化操作は、公知の方法で、例えば西独−特許第２．
７４４７６８号又は西独−特許出願公開第５，０２５，
５０７号各公報に記載の方法によって行ってよい。The metallization operation is carried out in a known manner, for example as described in West German Patent No. 2.
No. 744768 or West German Patent Application Publication No. 5,025,
This may be carried out by the methods described in each publication of No. 507.
実施例
ブタジ土・ン塩化パラジウムのα０１ ｔ／ｌの溶液中
で、炭素フィラメントヤーン布を１０秒間活性化し、乾
燥し、ついて５０ ｆ／ｌの塩化ニッケルー （ＳＨ，
０，１０ｔ／ｌｆ） ＜ Ｌｌｖ酸及び５ ｔ／ｌのジ
メチルアミンボランを含有し、＆５のｐＨを持つ金属化
浴中で５分間ニッケルめっきする。EXAMPLE A carbon filament yarn fabric was activated for 10 seconds in a solution of α01 t/l of nickel chloride (SH,
Nickel plate for 5 minutes in a metallization bath containing <0,10 t/lf) <Llv acid and 5 t/l dimethylamine borane and having a pH of &5.
この炭素フィラメントヤーン布は、３α８９７ｍ”のニ
ッケルを吸収し、１２オームの抵抗／平方を持つ。This carbon filament yarn fabric absorbs 3α897 m'' of nickel and has a resistance of 12 ohms/square.
このニッケルめっきした炭素フィラメントヤーン布を、
マイクロ波伝送器に９０’で配置する。This nickel-plated carbon filament yarn cloth is
Place 90' into the microwave transmitter.
その反射損失Ｒをｄｂ （デシベル）で測定する。The reflection loss R is measured in db (decibels).
１ＯＧＨｚよ〕高周波のマイクロ波に対する高い反射戻
に基因して、マイクロ波の透過に対する対象の増大した
防綴も達成される。Due to the high reflection return for high-frequency microwaves (10 GHz), an increased resistance of the object to the transmission of microwaves is also achieved.
代埴人 内 −明Daihanin - Akira
Claims (1)
繊維シート構造物を、ビーム行路に持込むことを特徴と
する高周波マイクロ波の反射方法。 ２ 金属層が、ニッケル、コバルト、鋼、金、嫁又はこ
れら金属とその相互若しくは鉄との合金を包含すること
を特徴とする特ｆｆ請氷の範囲第１項記載の方法。 五 該金属層が０．０５〜１０１當厚でｂることを特徴
とする特許請求の範囲第１項記載の方法。 ４、 該金属層がα１〜１μ慣厚であることｔ−特徴と
する特許請求の範囲３１１項記載の方法。[Scope of Claims] t. A method for reflecting high-frequency microwaves, characterized in that a metallized carbon-based material, carbon fiber, or a fiber sheet structure manufactured therefrom is brought into the beam path. 2. The method according to claim 1, characterized in that the metal layer comprises nickel, cobalt, steel, gold, alloys, or alloys of these metals with each other or with iron. 5. The method according to claim 1, wherein the metal layer has a thickness of 0.05 to 101 mm. 4. The method of claim 311, wherein the metal layer has a customary thickness of α1 to 1μ.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19813141118 DE3141118A1 (en) | 1981-10-16 | 1981-10-16 | METHOD FOR REFLECTING HIGH-FREQUENCY MICROWAVES |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5879303A true JPS5879303A (en) | 1983-05-13 |
Family
ID=6144243
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18009082A Pending JPS5879303A (en) | 1981-10-16 | 1982-10-15 | Method of reflecting high frequency microwave |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP0077486A1 (en) |
| JP (1) | JPS5879303A (en) |
| DE (1) | DE3141118A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62166603A (en) * | 1986-01-20 | 1987-07-23 | Toray Ind Inc | Antenna structure body |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3436063A1 (en) * | 1984-10-02 | 1986-04-10 | Autoflug Gmbh, 2084 Rellingen | STACKED ARRANGEMENT TO IMPROVE RADAR REFLECTION |
| GB2226704A (en) * | 1988-12-29 | 1990-07-04 | Corrocoat Limited | Deflection of radiation by particulate matter |
| GB2256529B (en) * | 1991-04-02 | 1995-08-16 | Marconi Electronic Devices | Antenna arrangements |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2015652B1 (en) * | 1970-04-02 | 1971-08-05 | Messerschmitt Boelkow Blohm Gmbh | Chaff made from a conductive coated fiber |
| JPS53139872A (en) * | 1977-05-10 | 1978-12-06 | Toray Industries | Porous body comprising metal coated carbon fiber |
| DE2847485A1 (en) * | 1978-11-02 | 1980-05-14 | Bayer Ag | USE OF METALIZED, TEXTILE SURFACES AS REFLECTION MEDIA FOR MICROWAVES |
-
1981
- 1981-10-16 DE DE19813141118 patent/DE3141118A1/en not_active Withdrawn
-
1982
- 1982-10-04 EP EP82109136A patent/EP0077486A1/en not_active Withdrawn
- 1982-10-15 JP JP18009082A patent/JPS5879303A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62166603A (en) * | 1986-01-20 | 1987-07-23 | Toray Ind Inc | Antenna structure body |
Also Published As
| Publication number | Publication date |
|---|---|
| EP0077486A1 (en) | 1983-04-27 |
| DE3141118A1 (en) | 1983-04-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10400370B2 (en) | Nonwoven fabric or nonwoven composite material for shielding and absorbing electromagnetic wave | |
| WO1996010901B1 (en) | Metal filaments for electromagnetic interference shielding | |
| KR880700624A (en) | Radio Frequency Interference Shield Enclosure and Manufacturing Method Thereof | |
| US4852453A (en) | Chaff comprising metal coated fibers | |
| US4942090A (en) | Chaff comprising metal coated fibers | |
| JPS5879303A (en) | Method of reflecting high frequency microwave | |
| US4657786A (en) | Black-metallized substrate surfaces | |
| US5035942A (en) | Flexible materials for reflecting electromagnetic wave | |
| JPS59102953A (en) | Electrically conductive synthetic resin composition | |
| US5876643A (en) | Electromagnetic interference shielding | |
| US4600642A (en) | Radar wave dipole of copper coated carbon fibers | |
| DE3337941A1 (en) | Passive radar reflectors | |
| JP2000151179A (en) | Radio wave absorption material | |
| US4976828A (en) | Chaff comprising metal coated fibers | |
| JPH09107195A (en) | Manufacture of high electromagnetic wave shielding composite sheet | |
| JPS5986637A (en) | Electrically conductive inorganic powder | |
| JPS60264240A (en) | Composite material | |
| JPH06313250A (en) | Copper-based metallic nonwoven fabric and its production | |
| JPS6160463A (en) | Electromagnetic shielding paper | |
| JP2861059B2 (en) | Metal-coated nonwoven fabric and method of manufacturing | |
| JP2897129B2 (en) | Conductive paper, thermoplastic conductive paper and heat-fusible conductive paper | |
| JPH036892A (en) | Multilayer printed wiring board | |
| JPS636169A (en) | Metal coated carbon fiber and blended fiber paper | |
| JPH0653688A (en) | Molded form for electromagnetic shield | |
| JPS63135598A (en) | Conductive paper |