Extrudable crosslinked grease-like electromagnetic waves absorbent

• Main Authors: FURUYA, ORIE, KOBAYASHI, TATSUYA
• Format: Patent
• Language: English
• Published: 11.08.2007
• Subjects: ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; ANTENNAS, i.e. RADIO AERIALS; BASIC ELECTRIC ELEMENTS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS,e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES,DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; CONVEYING; ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; FUELS; HANDLING THIN OR FILAMENTARY MATERIAL; INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATINGCOMPOSITIONS; INDUCTANCES; LUBRICANTS; LUBRICATING COMPOSITIONS; MAGNETS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; PACKAGES; PACKAGING ELEMENTS; PACKING; PEAT; PERFORMING OPERATIONS; PETROLEUM, GAS OR COKE INDUSTRIES; PRINTED CIRCUITS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES; STORING; TECHNICAL GASES CONTAINING CARBON MONOXIDE; THEIR PREPARATION OR CHEMICAL WORKING-UP; TRANSFORMERS; TRANSPORTING; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATINGINGREDIENTS IN A LUBRICATING COMPOSITION

The present invention provides an extrudable crosslinked grease-like electromagnetic wave absorbent comprising an electromagnetic wave absorbing fillers, preferably a composite fillers composed of an electromagnetic absorber and a flame retardant dispersed in the said crosslinked silicone gel, preferably a crosslinked silicone gel having consistency from 50 to 200 (measured by JIS K2220 1/4 cone), and the said crosslinked grease-like electromagnetic wave absorbent has self-retention of shape though has flowability, and contains from 200 to 800 parts by weight of electromagnetic absorbing fillers for 100 parts by weight of crosslinked silicone gel. The said extrudable crosslinked electromagnetic wave absorbent has excellent properties of electromagnetic wave absorbability, thermal conductivity, flame retardance, minor temperature dependence, and is extrudable for use in the area of gap in the sheet product or thin coating.