SEAL COMPOSITION, AND COMPOSITE POROUS BODY

SEAL COMPOSITION, AND COMPOSITE POROUS BODY

PROBLEM TO BE SOLVED: To provide a sealing composition (especially for making a conductive porous body to be a gas diffusion layer member) which has a sealability for sealing an end surface of the conductive porous body and moldability for molding integrally with the conductive porous body and moreo...

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Hauptverfasser: WADA MASAHIRO, KANDA EIKO, HAMAKUBO SHINJI, KOBIKI KAZUHIKO
Format: Patent
Sprache:eng
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BASIC ELECTRIC ELEMENTS
ELECTRICITY
PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY
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creator WADA MASAHIRO
KANDA EIKO
HAMAKUBO SHINJI
KOBIKI KAZUHIKO
description PROBLEM TO BE SOLVED: To provide a sealing composition (especially for making a conductive porous body to be a gas diffusion layer member) which has a sealability for sealing an end surface of the conductive porous body and moldability for molding integrally with the conductive porous body and moreover has suitable mechanical properties (hardness, strength, elongation or the like) and has an excellent chemical resistance (especially an acid resistance) and a thermal resistance. SOLUTION: The sealing composition contains: an EPDM having a Mooney viscosity 40-100 (ML(1+4) 100°C), an ethylene content 50-62 wt.%, and a dien content 2-10 wt.%; carbon black; and an organic peroxide. Preferably, the composition contains 10-120 parts weight of the carbon black and 0.5-5 parts weight of the organic peroxide per 100 parts weight of the EPDM and does not contain a plasticizer, a processing aid and a lubricant nor the like. COPYRIGHT: (C)2009,JPO&INPIT
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subjects BASIC ELECTRIC ELEMENTS
ELECTRICITY
PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY
title SEAL COMPOSITION, AND COMPOSITE POROUS BODY
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