| 摘要 |
PROBLEM TO BE SOLVED: To obtain a seal material from which low molecule organopolysiloxane, of which the degree of polymerization is 10 or less, does not elute much. SOLUTION: A rubber composite for a solid high polymer fuel cell separator seal, which is the rubber composite for sealing, which seals at least a one-side circumference edge part of a solid high polymer fuel cell separator, and of which the content quantity of the low molecule organopolysiloxane, of which the polymerization degree is 10 or less, is 0.2 weight % or less, is provided. Since this seal material does not almost have much of the elution of non- functionality low molecule organopolysiloxane of polymerization degree of 10 or less, which is easy to elute out in the mixture of water and ethylene glycol used as a coolant of separator, especially, it is useful as the solid high polymer type fuel cell separator seal material. |
