THERMOPLASTIC ELASTOMER COMPOSITION FOR HOSE OF FUEL CELL AND FUEL CELL HOSE

摘要

PROBLEM TO BE SOLVED: To obtain a thermoplastic elastomer composition in which rising of conductivity of pure water is small and which is superior in insulation and is suitable for a hose used in a fuel cell.

SOLUTION: The thermoplastic elastomer composition most suitable for a hose used in a fuel cell has preferably a conductivity rising value (μs/cm) of pure water after immersing in the pure water for 7 days is 5 or less, and furthermore it is preferable that the hardness of this thermoplastic elastomer composition is A90 (hardness of type A durometer) or less, and is flexible. As this thermoplastic elastomer composition, one in which a styrene system elastomer such as a styrene-ethylene/butene-styrene copolymer (SEBS) and/or an olefin based elastomer such as ethylene-propylene copolymer (EPR) are blended in a polyolefin resin such as polypropylene (PP) is suggested.

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