Method of production of cross-linked rubber
A method of producing cross-linked rubber including a step of reacting a polyether rubber composition at 130 to 200° C., the polyether rubber composition containing 100 parts by weight of epihalohydrin monomer units, 0.1 to 100 parts by weight of a five-membered ring or six-membered ring nitrogen atom-containing aromatic heterocyclic type compound, and 0.1 to 10 parts by weight of at least one cross-linking agent which is selected from sulfur, a sulfur-containing compound, and triazine-based compound.
1. A method of producing a cross-linked rubber, the method comprising:
heating a polyether rubber composition at 130 to 200° C. to produce the cross-linked rubber, the polyether rubber composition comprising:
100 parts by weight of polyether rubber which contains epihalohydrin monomer units,
0.1 to 100 parts by weight of an aromatic heterocyclic compound containing a five-membered or six-membered nitrogen atom-containing ring, and
0.1 to 10 parts by weight of at least one cross-linking agent selected from sulfur, sulfur-containing compounds, and triazine-based compounds.
2. The method of claim 1 , further comprising kneading together said polyether rubber, said nitrogen atom-containing aromatic heterocyclic type compound, and said at least one cross-linking agent at 0 to 100° C. to produce the polyether rubber composition.
3. The method of claim 1 , wherein said polyether rubber further contains unsaturated oxide monomer units.
4. The method of claim 1 , wherein the aromatic heterocyclic compound is 1-methylimidazole.
5. The method of claim 1 , wherein heating the polyether rubber composition at 130 to 200° C. causes the cross-linking of said polyether rubber to proceed simultaneously with a reaction that bonds said nitrogen atom-containing aromatic heterocyclic type compound to side chains of said polyether rubber in a cationized state.
6. A cross-linked rubber obtained by the method of claim 1 .
7. An electroconductive member, comprising the cross-linked rubber as set forth in claim 6 .
8. The method of claim 1 , wherein the polyether rubber contains 0.1 to 100 mol % of the epihalohydrin monomer units with respect to the total monomer units.