IT1267134B1 - POLYMER MATERIAL AND STRUCTURE FOR THE ABSORPTION OF ELECTROMAGNETIC WAVES - Google Patents

POLYMER MATERIAL AND STRUCTURE FOR THE ABSORPTION OF ELECTROMAGNETIC WAVES

Info

Publication number
IT1267134B1
IT1267134B1 IT06795689A IT6795689A IT1267134B1 IT 1267134 B1 IT1267134 B1 IT 1267134B1 IT 06795689 A IT06795689 A IT 06795689A IT 6795689 A IT6795689 A IT 6795689A IT 1267134 B1 IT1267134 B1 IT 1267134B1
Authority
IT
Italy
Prior art keywords
absorption
polymer material
electromagnetic waves
waves
electromagnetic
Prior art date
Application number
IT06795689A
Other languages
Italian (it)
Other versions
IT8967956A1 (en
IT8967956A0 (en
Inventor
Mehaute Alain Le
Denis Cottevieille
Frederic Heliodore
Jean-Jacques Bonte
Jean-Paul Parneix
Original Assignee
Comp Generale Electricite
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 Comp Generale Electricite filed Critical Comp Generale Electricite
Publication of IT8967956A0 publication Critical patent/IT8967956A0/en
Publication of IT8967956A1 publication Critical patent/IT8967956A1/en
Application granted granted Critical
Publication of IT1267134B1 publication Critical patent/IT1267134B1/en

Links

Classifications

    • 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
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
    • 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
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • 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
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
    • 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
    • C08K3/08—Metals
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
    • C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L23/04—Homopolymers or copolymers of ethene
    • 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
    • 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
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/20—Properties of the layers or laminate having particular electrical or magnetic properties, e.g. piezoelectric
    • B32B2307/212—Electromagnetic interference shielding
    • 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
    • B32B2323/00—Polyalkenes
    • B32B2323/04—Polyethylene
    • 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
    • B32B2323/00—Polyalkenes
    • B32B2323/16—EPDM, i.e. ethylene propylene diene monomer
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
    • C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L23/16—Elastomeric ethene-propene or ethene-propene-diene copolymers, e.g. EPR and EPDM rubbers

Landscapes

  • Chemical & Material Sciences (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)
  • Compositions Of Macromolecular Compounds (AREA)
  • Soft Magnetic Materials (AREA)
  • Hard Magnetic Materials (AREA)
  • Polymers With Sulfur, Phosphorus Or Metals In The Main Chain (AREA)
  • Aerials With Secondary Devices (AREA)
IT06795689A 1988-11-17 1989-11-07 POLYMER MATERIAL AND STRUCTURE FOR THE ABSORPTION OF ELECTROMAGNETIC WAVES IT1267134B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8814939A FR2736647B1 (en) 1988-11-17 1988-11-17 POLYMERIC MATERIAL FOR THE ABSORPTION OF ELECTROMAGNETIC WAVES

Publications (3)

Publication Number Publication Date
IT8967956A0 IT8967956A0 (en) 1989-11-07
IT8967956A1 IT8967956A1 (en) 1991-05-07
IT1267134B1 true IT1267134B1 (en) 1997-01-24

Family

ID=9371930

Family Applications (1)

Application Number Title Priority Date Filing Date
IT06795689A IT1267134B1 (en) 1988-11-17 1989-11-07 POLYMER MATERIAL AND STRUCTURE FOR THE ABSORPTION OF ELECTROMAGNETIC WAVES

Country Status (8)

Country Link
BE (1) BE1011412A4 (en)
CA (1) CA2003073C (en)
DE (1) DE3936196C2 (en)
FR (1) FR2736647B1 (en)
GB (1) GB2307106B (en)
IT (1) IT1267134B1 (en)
NL (1) NL8902826A (en)
NO (1) NO306888B1 (en)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2996710A (en) * 1945-09-20 1961-08-15 Du Pont Electromagnetic radiation absorptive article
JPS54124298A (en) * 1978-03-20 1979-09-27 Tdk Corp Material for radio wave absorber
JPS5887142A (en) * 1981-11-20 1983-05-24 Showa Denko Kk Polyolefin composition
JPS60127366A (en) * 1983-12-15 1985-07-08 Tounen Sekiyu Kagaku Kk Thermoplastic resin composition

Also Published As

Publication number Publication date
DE3936196A1 (en) 1997-02-20
GB8924800D0 (en) 1996-12-18
IT8967956A1 (en) 1991-05-07
CA2003073A1 (en) 1996-10-11
BE1011412A4 (en) 1999-09-07
NL8902826A (en) 1997-08-01
FR2736647A1 (en) 1997-01-17
NO894439L (en) 1996-08-13
IT8967956A0 (en) 1989-11-07
GB2307106A (en) 1997-05-14
CA2003073C (en) 2000-01-18
FR2736647B1 (en) 1998-05-15
GB2307106B (en) 1998-01-07
NO306888B1 (en) 2000-01-03
DE3936196C2 (en) 2000-02-03

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Legal Events

Date Code Title Description
0001 Granted
TA Fee payment date (situation as of event date), data collected since 19931001

Effective date: 19971031