EP4058405A4 - Electromagnetic interference shielding composition, article and methods thereof - Google Patents

Electromagnetic interference shielding composition, article and methods thereof Download PDF

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Publication number
EP4058405A4
EP4058405A4 EP20887102.0A EP20887102A EP4058405A4 EP 4058405 A4 EP4058405 A4 EP 4058405A4 EP 20887102 A EP20887102 A EP 20887102A EP 4058405 A4 EP4058405 A4 EP 4058405A4
Authority
EP
European Patent Office
Prior art keywords
article
methods
electromagnetic interference
interference shielding
shielding composition
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
EP20887102.0A
Other languages
German (de)
French (fr)
Other versions
EP4058405A1 (en
Inventor
Avinash RAJALAKSHMAN PAI
Sabu THOMAS
Nandakumar KALARIKKAL
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.)
Mahatma Gandhi University
Ministry Of Electronics & Information Technology Meity
Original Assignee
Mahatma Gandhi University
Ministry Of Electronics & Information Technology Meity
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 Mahatma Gandhi University, Ministry Of Electronics & Information Technology Meity filed Critical Mahatma Gandhi University
Publication of EP4058405A1 publication Critical patent/EP4058405A1/en
Publication of EP4058405A4 publication Critical patent/EP4058405A4/en
Pending legal-status Critical Current

Links

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
    • H05K9/0081—Electromagnetic shielding materials, e.g. EMI, RFI shielding
    • H05K9/0083—Electromagnetic shielding materials, e.g. EMI, RFI shielding comprising electro-conductive non-fibrous particles embedded in an electrically insulating supporting structure, e.g. powder, flakes, whiskers
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B32/00—Carbon; Compounds thereof
    • C01B32/15—Nano-sized carbon materials
    • C01B32/158—Carbon nanotubes
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B32/00—Carbon; Compounds thereof
    • C01B32/15—Nano-sized carbon materials
    • C01B32/182—Graphene
    • C01B32/198—Graphene oxide
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/02—Elements
    • C08K3/04—Carbon
    • C08K3/042—Graphene or derivatives, e.g. graphene oxides
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/20—Oxides; Hydroxides
    • C08K3/22—Oxides; Hydroxides of metals
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L83/00—Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon only; Compositions of derivatives of such polymers
    • C08L83/04—Polysiloxanes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B82—NANOTECHNOLOGY
    • B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
    • B82Y30/00—Nanotechnology for materials or surface science, e.g. nanocomposites
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G77/00—Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule
    • C08G77/04—Polysiloxanes

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Nanotechnology (AREA)
  • Materials Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Inorganic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
EP20887102.0A 2019-11-14 2020-01-03 Electromagnetic interference shielding composition, article and methods thereof Pending EP4058405A4 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IN201911046464 2019-11-14
PCT/IB2020/050030 WO2021094836A1 (en) 2019-11-14 2020-01-03 Electromagnetic interference shielding composition, article and methods thereof

Publications (2)

Publication Number Publication Date
EP4058405A1 EP4058405A1 (en) 2022-09-21
EP4058405A4 true EP4058405A4 (en) 2023-11-29

Family

ID=75911874

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20887102.0A Pending EP4058405A4 (en) 2019-11-14 2020-01-03 Electromagnetic interference shielding composition, article and methods thereof

Country Status (2)

Country Link
EP (1) EP4058405A4 (en)
WO (1) WO2021094836A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20220202235A1 (en) * 2020-12-30 2022-06-30 Whirlpool Corporation Phase-gate hybrid coating crisp plate
CN114479435A (en) * 2021-12-30 2022-05-13 昆山科运新型工程材料科技有限公司 Preparation method of electromagnetic shielding magnetic-conducting polymer alloy and product thereof

Non-Patent Citations (5)

* Cited by examiner, † Cited by third party
Title
CHEN CHUN-YU ET AL: "Remarkable microwave absorption performance of graphene at a very low loading ratio", COMPOSITES PART B, ELSEVIER, AMSTERDAM, NL, vol. 114, 16 February 2017 (2017-02-16), pages 395 - 403, XP029986059, ISSN: 1359-8368, DOI: 10.1016/J.COMPOSITESB.2017.02.016 *
GUPTA SHIVAM ET AL: "Carbon materials and their composites for electromagnetic interference shielding effectiveness in X-band", CARBON, ELSEVIER OXFORD, GB, vol. 152, 3 June 2019 (2019-06-03), pages 159 - 187, XP085769546, ISSN: 0008-6223, [retrieved on 20190603], DOI: 10.1016/J.CARBON.2019.06.002 *
See also references of WO2021094836A1 *
YADAV RAGHVENDRA SINGH ET AL: "Lightweight NiFe2O4-Reduced Graphene Oxide-Elastomer Nanocomposite flexible sheet for electromagnetic interference shielding application", COMPOSITES PART B, vol. 166, 1 June 2019 (2019-06-01), AMSTERDAM, NL, pages 95 - 111, XP055823689, ISSN: 1359-8368, DOI: 10.1016/j.compositesb.2018.11.069 *
YANG JIANMING ET AL: "Light-weight and flexible silicone rubber/MWCNTs/Fe3O4 nanocomposite foams for efficient electromagnetic interference shielding and microwave absorption", COMPOSITES SCIENCE AND TECHNOLOGY, ELSEVIER, AMSTERDAM, NL, vol. 181, 8 September 2019 (2019-09-08), XP085730972, ISSN: 0266-3538, [retrieved on 20190531], DOI: 10.1016/J.COMPSCITECH.2019.05.027 *

Also Published As

Publication number Publication date
WO2021094836A1 (en) 2021-05-20
EP4058405A1 (en) 2022-09-21

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A4 Supplementary search report drawn up and despatched

Effective date: 20231030

RIC1 Information provided on ipc code assigned before grant

Ipc: C08K 3/22 20060101ALI20231024BHEP

Ipc: C08K 3/04 20060101ALI20231024BHEP

Ipc: C08G 77/04 20060101ALI20231024BHEP

Ipc: C08L 83/04 20060101ALI20231024BHEP

Ipc: H05K 9/00 20060101ALI20231024BHEP

Ipc: C01B 32/198 20170101ALI20231024BHEP

Ipc: B82Y 30/00 20110101ALI20231024BHEP

Ipc: C01B 32/158 20170101AFI20231024BHEP