SEALING MATERIAL FOR HIGH-PRESSURE HYDROGEN CONTAINER, AND HIGH-PRESSURE HYDROGEN CONTAINER

• Main Authors: KOBIKI, KAZUHIKO, HAMAKUBO, MASASHI, MORI, RENTARO, KAMIYA, ITSUO
• Format: Patent
• Language: English; French; Japanese
• Published: 21.08.2008
• Subjects: ADHESIVES; BASIC ELECTRIC ELEMENTS; BLASTING; CHEMISTRY; CYLINDERS; DYES; ELECTRICITY; ENGINEERING ELEMENTS AND UNITS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED,LIQUEFIED, OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; HEATING; LIGHTING; MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE; MECHANICAL ENGINEERING; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; PAINTS; PISTONS; POLISHES; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY; REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGYGENERATION, TRANSMISSION OR DISTRIBUTION; SEALINGS; STORING OF DISTRIBUTING GASES OR LIQUIDS; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE; THERMAL INSULATION IN GENERAL; VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED ORSOLIDIFIED GASES; WEAPONS

Disclosed is a sealing material for a high-pressure hydrogen container, which mainly comprises a silicone rubber composed of a dimethylsiloxane segment, a methylvinylsiloxane segment and a diphenylsiloxane segment. Also disclosed is a high-pressure hydrogen container using the sealing material. It becomes possible to provide a sealing material having the requirements (1) and (2) which are highly required for achieving the sealing of a high-pressure hydrogen container system for a fuel cell vehicle (a CHG tank) with an elastomeric material: (1) good durability in the environment where the pressure of high-pressure hydrogen is varied; and (2) good sag resistance in the lower temperature to higher temperature environment L'invention propose un matériau d'étanchéité pour un réservoir d'hydrogène haute pression qui comprend principalement un caoutchouc de silicone composé d'un segment de diméthylsiloxane, d'un segment de méthylvinylsiloxane et d'un segment de diphénylsiloxane. L'invention propose également un réservoir d'hydrogène haute pression utilisant le matériau d'étanchéité. Il est possible de proposer un matériau d'étanchéité ayant les exigences (1) et (2) qui sont hautement nécessaires pour obtenir l'étanchéité d'un système de réservoir d'hydrogène haute pression pour un véhicule à pile à combustible (un réservoir CHG) avec un matériau élastomère : (1) bonne durabilité dans l'environnement lorsque la pression de l'hydrogène haute pression est variée ; et (2) bonne résistance au gauchissement dans un environnement allant d'une température inférieure à une température supérieure.