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1. WO2022126227 - CARBON NANOTUBES BASED COMPOSITES WITH HIGH SHIELDING EFFICIENCY AND METHOD OF PRODUCTION THEREOF

Publication Number WO/2022/126227
Publication Date 23.06.2022
International Application No. PCT/CA2020/051767
International Filing Date 18.12.2020
IPC
G12B 17/02 2006.1
GPHYSICS
12INSTRUMENT DETAILS
BCONSTRUCTIONAL DETAILS OF INSTRUMENTS, OR COMPARABLE DETAILS OF OTHER APPARATUS, NOT OTHERWISE PROVIDED FOR
17Screening
02from electric or magnetic fields, e.g. radio waves
C08J 3/20 2006.1
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H142
3Processes of treating or compounding macromolecular substances
20Compounding polymers with additives, e.g. colouring
C08K 3/04 2006.1
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
KUSE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES AS COMPOUNDING INGREDIENTS
3Use of inorganic substances as compounding ingredients
02Elements
04Carbon
C08K 7/00 2006.1
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
KUSE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES AS COMPOUNDING INGREDIENTS
7Use of ingredients characterised by shape
C08L 101/12 2006.1
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
101Compositions of unspecified macromolecular compounds
12characterised by physical features, e.g. anisotropy, viscosity or electrical conductivity
G01T 1/164 2006.1
GPHYSICS
01MEASURING; TESTING
TMEASUREMENT OF NUCLEAR OR X-RADIATION
1Measuring X-radiation, gamma radiation, corpuscular radiation, or cosmic radiation
16Measuring radiation intensity
161Applications in the field of nuclear medicine, e.g. in vivo counting
164Scintigraphy
CPC
C08J 3/20
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G
3Processes of treating or compounding macromolecular substances
20Compounding polymers with additives, e.g. colouring
C08K 3/04
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
KUse of inorganic or non-macromolecular organic substances as compounding ingredients
3Use of inorganic substances as compounding ingredients
02Elements
04Carbon
C08K 7/00
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
KUse of inorganic or non-macromolecular organic substances as compounding ingredients
7Use of ingredients characterised by shape
H05K 9/0075
HELECTRICITY
05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
KPRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
9Screening of apparatus or components against electric or magnetic fields
0073Shielding materials
0075Magnetic shielding materials
H05K 9/009
HELECTRICITY
05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
KPRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
9Screening of apparatus or components against electric or magnetic fields
0073Shielding materials
0081Electromagnetic shielding materials, e.g. EMI, RFI shielding
009comprising electro-conductive fibres, e.g. metal fibres, carbon fibres, metallised textile fibres, electro-conductive mesh, woven, non-woven mat, fleece, cross-linked
Applicants
  • SOCPRA SCIENCES ET GÉNIE S.E.C. [CA]/[CA]
Inventors
  • MOGHADAM, Narjes
  • FONTAINE, Réjean
  • LECOMTE, Roger
Agents
  • ANGLEHART ET AL.
  • ANGLEHART, James
Priority Data
Publication Language English (en)
Filing Language English (EN)
Designated States
Title
(EN) CARBON NANOTUBES BASED COMPOSITES WITH HIGH SHIELDING EFFICIENCY AND METHOD OF PRODUCTION THEREOF
(FR) COMPOSITES À BASE DE NANOTUBES DE CARBONE À HAUT RENDEMENT DE BLINDAGE ET LEUR PROCÉDÉ DE PRODUCTION
Abstract
(EN) The present disclosure provides a composite and method for synthesis of thereof for electromagnetic shielding. The method comprising adding conductive carbon nanotubes (CNTs) having an average aspect ratio of at least 800 to a solvent to make a mixture; mixing said mixture to provide energy higher than binding energy of the CNTs to each other and lower than or near an energy required to fracture the CNTs to cause dispersion of the CNTs in said solvent without agglomeration; adding a polymer matrix material to said mixture; mixing said mixture and said polymer matrix material while substantially maintaining said dispersion and said average aspect ratio of at least 800 in remaining CNTs; and curing said mixture to obtain the composite material.
(FR) La présente invention concerne un composite et un procédé de synthèse de celui-ci pour un blindage électromagnétique. Le procédé comprend l'ajout de nanotubes de carbone conducteurs (CNT) ayant un facteur de forme moyen d'au moins 800 à un solvant pour fabriquer un mélange; le mélange dudit mélange pour fournir de l'énergie supérieure à l'énergie de liaison des CNT l'un à l'autre et inférieure ou proche d'une énergie nécessaire pour fracturer les CNT afin de provoquer la dispersion des CNT dans ledit solvant sans agglomération; l'ajout d'un matériau de matrice polymère audit mélange; le mélange dudit mélange et dudit matériau de matrice polymère tout en maintenant sensiblement ladite dispersion et ledit facteur de forme moyen d'au moins 800 dans les CNT restants; et le durcissement dudit mélange pour obtenir le matériau composite.
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