Fluororubber composition
AssigneeNok Corporation
InventorsTakahiro Higuma, Hirokazu Maekawa
Life of this patent
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Abstract
A fluororubber composition comprising 3 to 20 parts by weight of carbon fibers and 1 to 8 parts by weight of carbon nanotubes based on 100 parts by weight of fluororubber. The crosslinked molded article obtained from the fluororubber composition has excellent effects of not only imparting oil film retention, but also improving the material strength of fluororubber due to the combined use of carbon nanotubes, which have high reinforcing properties. Further, the fluororubber composition can give a fluororubber crosslinked product excellent in abrasion resistance and pressure resistance.
Claims7
A transmission sealing member comprising a crosslinked fluororubber composition comprising 10 to 20 parts by weight of carbon fibers and 3 to 5 parts by weight of carbon nanotubes based on 100 parts by weight of fluororubber,
- wherein the fluororubber comprises at least one selected from the group consisting of vinylidene fluoride-hexafluoropropylene copolymer, vinylidene fluoride-tetrafluoroethylene-hexafluoropropylene terpolymer, and vinylidene fluoride-hexafluoropropylene-perfluoroalkyl vinyl ether terpolymer,
- wherein the carbon fibers have an average fiber diameter of 5 to 20 μm, an average fiber length of 10 to 200 μm, and a Mohs hardness of 3 to 6.
Dependencies are inferred from the claim text.