DE69715073D1 - Absorber für Funkwellen - Google Patents
Absorber für FunkwellenInfo
- 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
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)
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)
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 |
WO2010138139A1 (en) * | 2009-05-28 | 2010-12-02 | 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)
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 |
EP0374795B1 (de) * | 1988-12-19 | 1995-10-18 | Matsushita Electric Industrial Co., Ltd. | Funkwellen absorbierendes 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 |
-
1997
- 1997-03-31 US US08/829,382 patent/US5885692A/en not_active Expired - Fee Related
- 1997-04-02 DE DE1997615073 patent/DE69715073T2/de not_active Expired - Fee Related
- 1997-04-02 EP EP19970105445 patent/EP0800230B1/de not_active Expired - Lifetime
- 1997-04-03 KR KR1019970012337A patent/KR970070065A/ko not_active Application Discontinuation
Also Published As
Publication number | Publication date |
---|---|
US5885692A (en) | 1999-03-23 |
EP0800230B1 (de) | 2002-09-04 |
KR970070065A (ko) | 1997-11-07 |
DE69715073T2 (de) | 2003-01-02 |
EP0800230A1 (de) | 1997-10-08 |
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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 |