Rubber compositions and uses thereof
First Claim
1. A rubber composition comprising:
- about 40 to about 70 wt. % of an elastomer comprising a rubber selected from the group consisting of acrylonitrile-butadiene, hydrogenated acrylonitrile-butadiene, carboxylated acrylonitrile-butadiene and mixtures thereof;
about 0.1 to about 10 wt. % of reinforcing fibers that are aramid fibers;
about 0.1 to about 10 wt. % of nanometric filamentary structures that are carbon nanotubes, said nanometric filamentary structures being functionalized or unfunctionalized; and
about 15 to about 40 wt. % of a filler selected from the group consisting of carbon black, silica and a mixture thereof,wherein said rubber composition is a cured rubber composition having an elongation % of about 302 to about 650, measured according to ASTM D-412 standard.
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Accused Products
Abstract
There are provided rubber compositions comprising an elastomer comprising a rubber chosen from acrylonitrile-butadiene, hydrogenated acrylonitrile-butadiene, carboxylated acrylonitrile-butadiene and mixtures thereof; reinforcing fibers chosen from aramid fibers, carbon fibers, polyester fibers, glass fibers, nylon fibers and mixtures thereof, and/or nanometric filamentary structures chosen from nanowires, nanorods, nanofibers, nanoribbons, nanotubes and mixtures thereof, the nanometric filamentary structures being functionalized or unfunctionalized; and a filler chosen from carbon black and silica. These compositions can be cured or uncured and they can be used for preparing various articles. Methods for preparing such compositions are also disclosed.
28 Citations
21 Claims
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1. A rubber composition comprising:
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about 40 to about 70 wt. % of an elastomer comprising a rubber selected from the group consisting of acrylonitrile-butadiene, hydrogenated acrylonitrile-butadiene, carboxylated acrylonitrile-butadiene and mixtures thereof; about 0.1 to about 10 wt. % of reinforcing fibers that are aramid fibers; about 0.1 to about 10 wt. % of nanometric filamentary structures that are carbon nanotubes, said nanometric filamentary structures being functionalized or unfunctionalized; and about 15 to about 40 wt. % of a filler selected from the group consisting of carbon black, silica and a mixture thereof, wherein said rubber composition is a cured rubber composition having an elongation % of about 302 to about 650, measured according to ASTM D-412 standard. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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10. A rubber composition comprising:
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an elastomer comprising a rubber selected from the group consisting of acrylonitrile-butadiene, hydrogenated acrylonitrile-butadiene, carboxylated acrylonitrile-butadiene and mixtures thereof; reinforcing fibers that are aramid fibers; nanometric filamentary structures that are carbon nanotubes, said nanometric filamentary structures being functionalized or unfunctionalized; and a filler selected from the group consisting of carbon black, silica, and a mixture thereof, wherein said rubber composition is a cured rubber composition having an elongation % of about 302 to about 650, measured according to ASTM D-412 standard; and a 100% modulus of about 300 to about 1500 measured according to ASTM D-412 standard.
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11. A rubber composition comprising:
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an elastomer comprising a rubber selected from the group consisting of acrylonitrile-butadiene, hydrogenated acrylonitrile-butadiene, carboxylated acrylonitrile-butadiene and mixtures thereof; reinforcing fibers that are aramid fibers; nanometric filamentary structures that are carbon nanotubes, said nanometric filamentary structures being functionalized or unfunctionalized; and a filler selected from carbon black, silica, and a mixture thereof, wherein said rubber composition is a cured rubber composition having an elongation % of about 302 to about 650, measured according to ASTM D-412 standard, a 100% modulus of about 300 to about 1500 psi measured according to ASTM D-412 standard, and a 300% modulus of about 1303 to about 3000 psi, measured according to ASTM D-412 standard.
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Specification