SOUND ABSORBING MATERIAL AND SEALING MATERIAL

A sound absorbing material is obtained by foaming a rubber composition containing an ethylene-propylene-diene rubber. The content ratio of sulfur in the sound absorbing material calculated by a fluorescent X-ray measurement, based on mass, is 1000 ppm or less. The sound absorbing material has a 50 %...

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Bibliographische Detailangaben
Hauptverfasser:	IWASE, TAKAYUKI, HIRAI, BUNTA
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	ACOUSTICS ACOUSTICS NOT OTHERWISE PROVIDED FOR ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE ADHESIVES AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G CHEMISTRY COMPOSITIONS BASED THEREON COMPOSITIONS OF MACROMOLECULAR COMPOUNDS DYES GENERAL PROCESSES OF COMPOUNDING LAYERED PRODUCTS LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE METALLURGY METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING,NOISE OR OTHER ACOUSTIC WAVES IN GENERAL MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS MUSICAL INSTRUMENTS NATURAL RESINS NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL ORGANIC MACROMOLECULAR COMPOUNDS PAINTS PERFORMING OPERATIONS PHYSICS POLISHES SOUND-PRODUCING DEVICES THEIR PREPARATION OR CHEMICAL WORKING-UP TRANSPORTING USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS USE OF MATERIALS AS ADHESIVES WORKING-UP
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Beschreibung
Zusammenfassung:	A sound absorbing material is obtained by foaming a rubber composition containing an ethylene-propylene-diene rubber. The content ratio of sulfur in the sound absorbing material calculated by a fluorescent X-ray measurement, based on mass, is 1000 ppm or less. The sound absorbing material has a 50 % compressive load value of 0.1 N/cm 2 or more and 10 N/cm 2 or less. The sound absorbing material has a 50 % permanent compression set of less than 50 %.