ADHESIVE SEAL MEMBER FOR FUEL CELL
An adhesive seal member for a fuel cell of the present invention includes a cross-linked product of a rubber composition containing components (A) to (E): (A) at least one rubber component selected from ethylene-propylene rubber and ethylene-propylene-diene rubber, (B) an organic peroxide having a one-hour half-life temperature of 130° C. or less, (C) a crosslinking aid, (D) at least one adhesive component selected from a resorcinol compound and a melamine compound, an aluminate coupling agent, and a silane coupling agent, and (E) a softener having a pour point of −40° C. or less. If the ethylene-propylene rubber or the ethylene-propylene-diene rubber in (A) the rubber component has an ethylene content of 53% by mass or less, the rubber composition may be devoid of (E) the softener having a pour point of −40° C. or less.
1 - 7 . (canceled)
8 . An adhesive seal member for a fuel cell, the adhesive seal member sealing a component member in the fuel cell and comprising a cross-linked product of a rubber composition containing components (A) to (E):
(A) at least one rubber component selected from ethylene-propylene rubber and ethylene-propylene-diene rubber;
(B) an organic peroxide having a one-hour half-life temperature of 130° C. or less;
(C) a crosslinking aid;
(D) at least one adhesive component selected from a resorcinol compound and a melamine compound, an aluminate coupling agent, and a silane coupling agent; and
(E) a softener having a pour point of −40° C. or less.
9 . An adhesive seal member for a fuel cell, the adhesive seal member sealing a component member in the fuel cell and comprising a cross-linked product of a rubber composition containing components (A) to (D):
(A) at least one rubber component selected from ethylene-propylene rubber and ethylene-propylene-diene rubber having an ethylene content of 50% by mass or less;
(B) an organic peroxide having a one-hour half-life temperature of 130° C. or less;
(C) a crosslinking aid; and
(D) at least one adhesive component selected from a resorcinol compound and a melamine compound, an aluminate coupling agent, and a silane coupling agent.
10 . The adhesive seal member for a fuel cell according to claim 9 , wherein the rubber composition further contains (E) a softener having a pour point of −40° C. or less.
11 . The adhesive seal member for a fuel cell according to claim 8 , wherein (E) the softener is poly-α-olefin.
12 . The adhesive seal member for a fuel cell according to claim 10 , wherein (E) the softener is poly-α-olefin.
13 . The adhesive seal member for a fuel cell according to claim 8 , wherein the amount of (E) the softener is 5 parts by mass or more and 50 parts by mass or less based on 100 parts by mass of (A) the rubber component.
14 . The adhesive seal member for a fuel cell according to claim 10 , wherein the amount of (E) the softener is 5 parts by mass or more and 50 parts by mass or less based on 100 parts by mass of (A) the rubber component.
15 . The adhesive seal member for a fuel cell according to claim 11 , wherein the amount of (E) the softener is 5 parts by mass or more and 50 parts by mass or less based on 100 parts by mass of (A) the rubber component.
16 . The adhesive seal member for a fuel cell according to claim 12 , wherein the amount of (E) the softener is 5 parts by mass or more and 50 parts by mass or less based on 100 parts by mass of (A) the rubber component.
17 . The adhesive seal member for a fuel cell according to claim 8 , wherein the adhesive seal member has a 100% modulus of 2 MPa or more and 4 MPa or less.
18 . The adhesive seal member for a fuel cell according to claim 9 , wherein the adhesive seal member has a 100% modulus of 2 MPa or more and 4 MPa or less.
19 . The adhesive seal member for a fuel cell according to claim 8 , wherein the adhesive seal member has a Gehman torsion test temperature T2 of −40° C. or less.
20 . The adhesive seal member for a fuel cell according to claim 9 , wherein the adhesive seal member has a Gehman torsion test temperature T2 of −40° C. or less.