JPS54121046A - Electric wave absorbing material - Google Patents

Electric wave absorbing material

Info

Publication number
JPS54121046A
JPS54121046A JP2780278A JP2780278A JPS54121046A JP S54121046 A JPS54121046 A JP S54121046A JP 2780278 A JP2780278 A JP 2780278A JP 2780278 A JP2780278 A JP 2780278A JP S54121046 A JPS54121046 A JP S54121046A
Authority
JP
Japan
Prior art keywords
electric wave
range
absorbing material
powder
magnetic powder
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
Application number
JP2780278A
Other languages
Japanese (ja)
Inventor
Takeshi Ishino
Hiroshi Yamashita
Kenichi Ichihara
Takashi Watanabe
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
TDK Corp
Original Assignee
TDK Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by TDK Corp filed Critical TDK Corp
Priority to JP2780278A priority Critical patent/JPS54121046A/en
Publication of JPS54121046A publication Critical patent/JPS54121046A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q17/00—Devices for absorbing waves radiated from an antenna; Combinations of such devices with active antenna elements or systems
    • H01Q17/004—Devices for absorbing waves radiated from an antenna; Combinations of such devices with active antenna elements or systems using non-directional dissipative particles, e.g. ferrite powders

Abstract

PURPOSE:To obtain a thin electric wave absorbing material for 4-8GHz bands by dispersing the mixture magnetic powder composed by mixing the ferrite powder and the metal iron powder together with a weight percent in the fixed range into the organic high-molecule material with a fixed ratio. CONSTITUTION:The mixture magnetic powder is composed by mixing the ferrite powder containing at leat one kind of the metal selected among the groups comprising Mn, Ni, Mg, zinc, Co and copper with the metal iron powder in the range of 1:0.4-9.4 wt%. Such mixture magnetic powder is then dispersed into the organic high-molecule material containing the plasticizer, hardener or the like in the range of 25-34 cubic percent to the whole, and then kneaded with the roller, the ball mill, the sand mill and the like to secure the coating form or the sheet foam. Such electric wave absorbing material is mounted or coated to the electric wave reflector in the thickness range of 1.5-3.6 mm to feature a high reflective attenuation quantity at 4-8 GHz. This absorbing material features the reduced fluctuation of the absorbing characteristics to the change of the thickness of the material, thus ensuring excellent coating performance and a high economical property.
JP2780278A 1978-03-13 1978-03-13 Electric wave absorbing material Pending JPS54121046A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2780278A JPS54121046A (en) 1978-03-13 1978-03-13 Electric wave absorbing material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2780278A JPS54121046A (en) 1978-03-13 1978-03-13 Electric wave absorbing material

Publications (1)

Publication Number Publication Date
JPS54121046A true JPS54121046A (en) 1979-09-19

Family

ID=12231098

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2780278A Pending JPS54121046A (en) 1978-03-13 1978-03-13 Electric wave absorbing material

Country Status (1)

Country Link
JP (1) JPS54121046A (en)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58112202A (en) * 1981-12-26 1983-07-04 矢崎総業株式会社 Noise preventing high voltage resistance wire
JPS61500338A (en) * 1983-11-07 1986-02-27 ザ　ダウ　ケミカル　カンパニ− Low density electromagnetic radiation absorbing composition
JPS6472925A (en) * 1987-09-14 1989-03-17 Fuji Electrochemical Co Ltd Magnesium-zinc ferrite material
US5083925A (en) * 1989-12-25 1992-01-28 Yonezawa Corporation Copying apparatus
WO2002080201A1 (en) * 2001-03-28 2002-10-10 Emcco Research Limited Electromagnetic energy absorbing material
CN104875441A (en) * 2015-05-26 2015-09-02 苏州斯迪克新材料科技股份有限公司 Screen protecting film for electronic product
CN104893606A (en) * 2015-05-21 2015-09-09 苏州斯迪克新材料科技股份有限公司 Broadband wave-absorbing film
CN104893605A (en) * 2015-05-21 2015-09-09 苏州斯迪克新材料科技股份有限公司 Wave-absorbing plate for electromagnetic shielding
CN105950054A (en) * 2016-06-24 2016-09-21 海宁卓泰电子材料有限公司 Manufacture method of electromagnetic shielding films
CN106102428A (en) * 2016-06-24 2016-11-09 海宁卓泰电子材料有限公司 A kind of manufacture method of electromagnetic shielding film

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5193146A (en) * 1975-02-13 1976-08-16

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5193146A (en) * 1975-02-13 1976-08-16

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58112202A (en) * 1981-12-26 1983-07-04 矢崎総業株式会社 Noise preventing high voltage resistance wire
JPS6223409B2 (en) * 1981-12-26 1987-05-22 Yazaki Corp
JPS61500338A (en) * 1983-11-07 1986-02-27 ザ　ダウ　ケミカル　カンパニ− Low density electromagnetic radiation absorbing composition
JPS6472925A (en) * 1987-09-14 1989-03-17 Fuji Electrochemical Co Ltd Magnesium-zinc ferrite material
US5083925A (en) * 1989-12-25 1992-01-28 Yonezawa Corporation Copying apparatus
GB2379331B (en) * 2001-03-28 2005-04-13 Emcco Res Ltd Electromagnetic energy absorbing material
WO2002080201A1 (en) * 2001-03-28 2002-10-10 Emcco Research Limited Electromagnetic energy absorbing material
CN104893606A (en) * 2015-05-21 2015-09-09 苏州斯迪克新材料科技股份有限公司 Broadband wave-absorbing film
CN104893605A (en) * 2015-05-21 2015-09-09 苏州斯迪克新材料科技股份有限公司 Wave-absorbing plate for electromagnetic shielding
CN104875441A (en) * 2015-05-26 2015-09-02 苏州斯迪克新材料科技股份有限公司 Screen protecting film for electronic product
CN105950054A (en) * 2016-06-24 2016-09-21 海宁卓泰电子材料有限公司 Manufacture method of electromagnetic shielding films
CN106102428A (en) * 2016-06-24 2016-11-09 海宁卓泰电子材料有限公司 A kind of manufacture method of electromagnetic shielding film
CN106102428B (en) * 2016-06-24 2019-01-04 海宁卓泰电子材料有限公司 A kind of production method of electromagnetic shielding film
CN105950054B (en) * 2016-06-24 2019-09-24 海宁卓泰电子材料有限公司 A kind of production method of electromagnetic shielding film

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