DE69715073D1 - Absorber für Funkwellen - Google Patents

Absorber für Funkwellen

Info

Publication number
DE69715073D1
DE69715073D1 DE69715073T DE69715073T DE69715073D1 DE 69715073 D1 DE69715073 D1 DE 69715073D1 DE 69715073 T DE69715073 T DE 69715073T DE 69715073 T DE69715073 T DE 69715073T DE 69715073 D1 DE69715073 D1 DE 69715073D1
Authority
DE
Germany
Prior art keywords
radio wave
wave absorber
absorber
radio
wave
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.)
Expired - Fee Related
Application number
DE69715073T
Other languages
English (en)
Other versions
DE69715073T2 (de
Inventor
Yasuo Imashiro
Shun Hasegawa
Isao Kato
Yoshihiko Kawahara
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.)
Nisshinbo Holdings Inc
Nisshinbo Tempest Inc
Original Assignee
Nisshinbo Tempest Inc
Nisshinbo Industries Inc
Nisshin Spinning Co Ltd
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 Nisshinbo Tempest Inc, Nisshinbo Industries Inc, Nisshin Spinning Co Ltd filed Critical Nisshinbo Tempest Inc
Publication of DE69715073D1 publication Critical patent/DE69715073D1/de
Application granted granted Critical
Publication of DE69715073T2 publication Critical patent/DE69715073T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
    • 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
    • H01Q17/008—Devices for absorbing waves radiated from an antenna; Combinations of such devices with active antenna elements or systems with a particular shape
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2361/00—Characterised by the use of condensation polymers of aldehydes or ketones; Derivatives of such polymers
    • C08J2361/20—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen
    • C08J2361/26—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes with heterocyclic compounds
    • C08J2361/28—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes with heterocyclic compounds with melamine
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L61/00—Compositions of condensation polymers of aldehydes or ketones; Compositions of derivatives of such polymers
    • C08L61/20—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen
    • C08L61/26—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes with heterocyclic compounds
    • C08L61/28—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes with heterocyclic compounds with melamine
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24479—Structurally defined web or sheet [e.g., overall dimension, etc.] including variation in thickness
    • Y10T428/24496—Foamed or cellular component
    • Y10T428/24504—Component comprises a polymer [e.g., rubber, etc.]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/249921—Web or sheet containing structurally defined element or component
    • Y10T428/249953—Composite having voids in a component [e.g., porous, cellular, etc.]
    • Y10T428/249981—Plural void-containing components
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/249921—Web or sheet containing structurally defined element or component
    • Y10T428/249953—Composite having voids in a component [e.g., porous, cellular, etc.]
    • Y10T428/249986—Void-containing component contains also a solid fiber or solid particle
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/249921—Web or sheet containing structurally defined element or component
    • Y10T428/249953—Composite having voids in a component [e.g., porous, cellular, etc.]
    • Y10T428/249987—With nonvoid component of specified composition
    • Y10T428/24999—Inorganic

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
DE1997615073 1996-04-05 1997-04-02 Absorber für Funkwellen Expired - Fee Related DE69715073T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11012796 1996-04-05

Publications (2)

Publication Number Publication Date
DE69715073D1 true DE69715073D1 (de) 2002-10-10
DE69715073T2 DE69715073T2 (de) 2003-01-02

Family

ID=14527719

Family Applications (1)

Application Number Title Priority Date Filing Date
DE1997615073 Expired - Fee Related DE69715073T2 (de) 1996-04-05 1997-04-02 Absorber für Funkwellen

Country Status (4)

Country Link
US (1) US5885692A (de)
EP (1) EP0800230B1 (de)
KR (1) KR970070065A (de)
DE (1) DE69715073T2 (de)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003229691A (ja) * 2002-01-31 2003-08-15 Riken Corp 電波吸収体
JP2005178839A (ja) * 2003-12-19 2005-07-07 Sharp Corp 基板収納用トレイ
JP4461970B2 (ja) * 2004-09-06 2010-05-12 三菱瓦斯化学株式会社 電波吸収体
DE102008036500A1 (de) 2008-08-05 2010-02-11 Hans-Dieter Cornelius Verfahren zur Herstellung eines graduierten Mikrowellenabsorbers
US7940204B1 (en) * 2009-05-28 2011-05-10 Orbit Advanced Technologies, Inc. Absorber assembly for an anechoic chamber
JP2020150221A (ja) * 2019-03-15 2020-09-17 日東電工株式会社 電波吸収体及び電波吸収体用キット
CN111251671A (zh) * 2020-02-25 2020-06-09 南京航天波平电子科技有限公司 一种高性能复合电磁兼容吸波材料及加工方法
KR102276145B1 (ko) 2020-04-20 2021-07-12 한국항공우주산업 주식회사 전파흡수용 구조체
CN113451783B (zh) * 2021-06-18 2022-12-09 西安交通大学 一种相变可控复合材料吸波体及其制备和性能调控方法
CN113745850B (zh) * 2021-08-05 2024-04-09 江苏大学 一种碳基宽带太赫兹吸收器及其制备方法
CN114749199B (zh) * 2022-04-02 2023-08-25 大连海事大学 一种NiFe2O4-MCS复合微波催化剂的制备方法及应用
CN116284985A (zh) * 2023-03-22 2023-06-23 南京航天波平电子科技有限公司 一种用于海绵吸波薄片辊压浸渍的方法

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3011769A1 (de) * 1980-03-27 1981-10-01 Basf Ag, 6700 Ludwigshafen Verfahren zur herstellung von elastischen schaumstoffen auf basis eines melamin/formaldehyd-kondensationsprodukts
DE3323943A1 (de) * 1983-07-02 1985-01-03 Basf Ag, 6700 Ludwigshafen Stabilisierte melaminharz-schaumstoffe
JPS61111335A (ja) * 1984-11-05 1986-05-29 Dainippon Toryo Co Ltd プラスチツク成形方法
US4795763A (en) * 1988-04-18 1989-01-03 The Celotex Corporation Carbon black-filled foam
DE3818114A1 (de) * 1988-05-27 1989-11-30 Gruenzweig & Hartmann Montage Absorber fuer elektromagnetische und akustische wellen
CA2005743C (en) * 1988-12-19 1994-09-06 Minoru Yoshinaka Radio wave absorbing material
US5331567A (en) * 1991-08-22 1994-07-19 The University Of Colorado Foundation, Inc. Pyramidal absorber having multiple backing layers providing improved low frequency response
US5381149A (en) * 1992-04-17 1995-01-10 Hughes Aircraft Company Broadband absorbers of electromagnetic radiation based on aerogel materials, and method of making the same
US5373296A (en) * 1992-08-18 1994-12-13 Tdk Corporation Electromagnetic wave absorber and wave absorption structure
JP3354220B2 (ja) * 1993-07-09 2002-12-09 日清紡績株式会社 メラミン系樹脂発泡体

Also Published As

Publication number Publication date
EP0800230A1 (de) 1997-10-08
EP0800230B1 (de) 2002-09-04
KR970070065A (ko) 1997-11-07
DE69715073T2 (de) 2003-01-02
US5885692A (en) 1999-03-23

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee