KR20220047781A - 전파 흡수체 필름, 및 그 제조 방법 - Google Patents

전파 흡수체 필름, 및 그 제조 방법 Download PDF

Info

Publication number
KR20220047781A
KR20220047781A KR1020227005479A KR20227005479A KR20220047781A KR 20220047781 A KR20220047781 A KR 20220047781A KR 1020227005479 A KR1020227005479 A KR 1020227005479A KR 20227005479 A KR20227005479 A KR 20227005479A KR 20220047781 A KR20220047781 A KR 20220047781A
Authority
KR
South Korea
Prior art keywords
radio wave
wave absorber
absorber film
less
binder resin
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
KR1020227005479A
Other languages
English (en)
Korean (ko)
Inventor
신이치 오코시
아스카 나마이
마리에 요시키요
마사유키 하라
다카히로 아사이
Original Assignee
고쿠리츠다이가쿠호우진 도쿄다이가쿠
도오꾜오까고오교 가부시끼가이샤
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 고쿠리츠다이가쿠호우진 도쿄다이가쿠, 도오꾜오까고오교 가부시끼가이샤 filed Critical 고쿠리츠다이가쿠호우진 도쿄다이가쿠
Publication of KR20220047781A publication Critical patent/KR20220047781A/ko
Pending legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K9/00—Screening of apparatus or components against electric or magnetic fields
    • H05K9/0073—Shielding materials
    • H05K9/0075—Magnetic shielding materials
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
    • B05D7/24—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials for applying particular liquids or other fluent materials
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/02—Physical, chemical or physicochemical properties
    • B32B7/025—Electric or magnetic properties
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
    • H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
    • H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
    • H01F1/032—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials
    • H01F1/10—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials non-metallic substances, e.g. ferrites, e.g. [(Ba,Sr)O(Fe2O3)6] ferrites with hexagonal structure
    • H01F1/11—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials non-metallic substances, e.g. ferrites, e.g. [(Ba,Sr)O(Fe2O3)6] ferrites with hexagonal structure in the form of particles
    • H01F1/113—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials non-metallic substances, e.g. ferrites, e.g. [(Ba,Sr)O(Fe2O3)6] ferrites with hexagonal structure in the form of particles in a bonding agent
    • H01F1/117—Flexible bodies
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F3/00—Cores, Yokes, or armatures
    • H01F3/02—Cores, Yokes, or armatures made from sheets
    • 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
    • H01Q17/002—Devices for absorbing waves radiated from an antenna; Combinations of such devices with active antenna elements or systems using short elongated elements as dissipative material, e.g. metallic threads or flake-like particles
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K9/00—Screening of apparatus or components against electric or magnetic fields
    • H05K9/0073—Shielding materials
    • H05K9/0081—Electromagnetic shielding materials, e.g. EMI, RFI shielding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D2430/00—Component used as a filler in the composition
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
    • H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
    • H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
    • H01F1/12—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials
    • H01F1/34—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials non-metallic substances, e.g. ferrites
    • H01F1/342—Oxides
    • H01F1/344—Ferrites, e.g. having a cubic spinel structure (X2+O)(Y23+O3), e.g. magnetite Fe3O4
    • H01F1/348—Hexaferrites with decreased hardness or anisotropy, i.e. with increased permeability in the microwave (GHz) range, e.g. having a hexagonal crystallographic structure

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
  • Laminated Bodies (AREA)
  • Hard Magnetic Materials (AREA)
  • Soft Magnetic Materials (AREA)
KR1020227005479A 2019-08-19 2020-07-30 전파 흡수체 필름, 및 그 제조 방법 Pending KR20220047781A (ko)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2019150011 2019-08-19
JPJP-P-2019-150011 2019-08-19
PCT/JP2020/029362 WO2021033517A1 (ja) 2019-08-19 2020-07-30 電波吸収体フィルム、及びその製造方法

Publications (1)

Publication Number Publication Date
KR20220047781A true KR20220047781A (ko) 2022-04-19

Family

ID=74661063

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020227005479A Pending KR20220047781A (ko) 2019-08-19 2020-07-30 전파 흡수체 필름, 및 그 제조 방법

Country Status (6)

Country Link
US (1) US20220288633A1 (https=)
EP (1) EP4020506A4 (https=)
JP (1) JP7576800B2 (https=)
KR (1) KR20220047781A (https=)
CN (1) CN114223042A (https=)
WO (1) WO2021033517A1 (https=)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20250037143A (ko) * 2023-09-08 2025-03-17 (주)이녹스첨단소재 전자파 흡수체

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008277726A (ja) 2006-09-01 2008-11-13 Univ Of Tokyo 電波吸収材料用の磁性結晶および電波吸収体
JP2009060060A (ja) 2007-09-03 2009-03-19 Osaka Industrial Promotion Organization 電磁波吸収シート

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01106317A (ja) * 1987-10-19 1989-04-24 Konica Corp 磁気記録媒体
JP2003229694A (ja) * 2002-02-05 2003-08-15 Sony Corp 電磁波吸収体およびその製造方法
KR101067731B1 (ko) * 2004-12-03 2011-09-28 니타 가부시키가이샤 전자 간섭 억제체, 안테나 장치, 및 전자 정보 전달 장치
JP5142354B2 (ja) 2007-01-16 2013-02-13 国立大学法人 東京大学 ε−Ｆｅ２Ｏ３結晶の製法
JP5557992B2 (ja) * 2008-09-02 2014-07-23 国立大学法人北海道大学 カーボンナノチューブが付着した導電性繊維、導電性糸、繊維構造体およびそれらの製造方法
JP5621642B2 (ja) * 2011-02-09 2014-11-12 東洋紡株式会社 易接着性ポリエステルフィルム
EP2929527B1 (en) * 2011-12-06 2020-11-18 E- Vision Smart Optics, Inc. Systems, devices, and/or methods for providing images
TW201601915A (zh) * 2014-07-07 2016-01-16 聯茂電子股份有限公司 電磁波干擾遮蔽薄膜
RU2598090C1 (ru) * 2015-03-20 2016-09-20 Российская Федерация, от имени которой выступает Государственная корпорация по атомной энергии "Росатом" Лакокрасочная радиопоглощающая композиция
JP6661445B2 (ja) * 2016-03-31 2020-03-11 国立大学法人 東京大学 高周波アンテナ素子、及び高周波アンテナモジュール
JPWO2018235952A1 (ja) * 2017-06-23 2020-05-07 マクセルホールディングス株式会社 電磁波吸収性組成物、電磁波吸収シート

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008277726A (ja) 2006-09-01 2008-11-13 Univ Of Tokyo 電波吸収材料用の磁性結晶および電波吸収体
JP2009060060A (ja) 2007-09-03 2009-03-19 Osaka Industrial Promotion Organization 電磁波吸収シート

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
A. Namai, M. Yoshikiyo, K. Yamada, S. Sakurai, T. Goto, T. Yoshida, T Miyazaki, M. Nakajima, T. Suemoto, H. Tokoro, and S. Ohkoshi, Nature Communications, 3, 1035/1-6 (2012).
A. Namai, S. Sakurai, M. Nakajima, T. Suemoto, K. Matsumoto, M. Goto, S. Sasaki, and S. Ohkoshi, J. Am. Chem. Soc., 131, 1170-1173 (2009).
S. Ohkoshi, S. Kuroki, S. Sakurai, K. Matsumoto, K. Sato, and S. Sasaki, Angew. Chem. Int. Ed., 46, 8392-8395 (2007).

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20250037143A (ko) * 2023-09-08 2025-03-17 (주)이녹스첨단소재 전자파 흡수체

Also Published As

Publication number Publication date
JP7576800B2 (ja) 2024-11-01
WO2021033517A1 (ja) 2021-02-25
CN114223042A (zh) 2022-03-22
EP4020506A1 (en) 2022-06-29
US20220288633A1 (en) 2022-09-15
EP4020506A4 (en) 2023-09-13
JPWO2021033517A1 (https=) 2021-02-25

Similar Documents

Publication Publication Date Title
JP7712637B2 (ja) 電磁波吸収体、及び電磁波吸収体形成用ペースト
KR102423386B1 (ko) 전자파 흡수체 및 막형성용 페이스트
KR102450588B1 (ko) 전파 흡수 적층 필름, 그 제조 방법, 및 그것을 포함하는 소자
KR102271402B1 (ko) 고주파 안테나 소자, 및 고주파 안테나 모듈
EP3029771B1 (en) Electromagnetic wave absorber and film forming paste
EP2447965B1 (en) Process for production of magnetic thin film
JP4674380B2 (ja) 電波吸収体用磁性粉体および製造法並びに電波吸収体
Rusly et al. Microwave absorption properties of single-and double-layer coatings based on strontium hexaferrite and graphite nanocomposite
Syazwan et al. Co–Ti-and Mn–Ti-substituted barium ferrite for electromagnetic property tuning and enhanced microwave absorption synthesized via mechanical alloying
JP7273953B2 (ja) 電波吸収体
Rosdi et al. Synthesis and characterization of Mg–Ti substituted barium hexaferrite (BaMg0. 6Ti0. 6Fe10. 8O19) derived from millscale waste for microwave application
KR20220047781A (ko) 전파 흡수체 필름, 및 그 제조 방법
Abdullah et al. Miniaturization of GPS patch antennas based on novel dielectric ceramics Zn (1− x) MgxAl2O4 by sol–gel method
KR20250165379A (ko) 전자파 흡수체 및 전자파 흡수체 형성용 페이스트
WO2025220476A1 (ja) 電磁波吸収体、及び電磁波吸収体形成用ペースト
TW202605858A (zh) 電磁波吸收體及電磁波吸收體形成用糊料

Legal Events

Date Code Title Description
PA0105 International application

St.27 status event code: A-0-1-A10-A15-nap-PA0105

PG1501 Laying open of application

St.27 status event code: A-1-1-Q10-Q12-nap-PG1501

PA0201 Request for examination

St.27 status event code: A-1-2-D10-D11-exm-PA0201

E902 Notification of reason for refusal
PE0902 Notice of grounds for rejection

St.27 status event code: A-1-2-D10-D21-exm-PE0902

P11-X000 Amendment of application requested

St.27 status event code: A-2-2-P10-P11-nap-X000

P13-X000 Application amended

St.27 status event code: A-2-2-P10-P13-nap-X000

E601 Decision to refuse application
PE0601 Decision on rejection of patent

St.27 status event code: N-2-6-B10-B15-exm-PE0601

P11 Amendment of application requested

Free format text: ST27 STATUS EVENT CODE: A-2-2-P10-P11-NAP-X000 (AS PROVIDED BY THE NATIONAL OFFICE)

P11-X000 Amendment of application requested

St.27 status event code: A-2-2-P10-P11-nap-X000

F13 Ip right granted in full following pre-grant review

Free format text: ST27 STATUS EVENT CODE: A-3-4-F10-F13-REX-PX0701 (AS PROVIDED BY THE NATIONAL OFFICE)

PX0701 Decision of registration after re-examination

St.27 status event code: A-3-4-F10-F13-rex-PX0701