US 11,697,728 B2 · Rubber compositions with dissagregated carbon nanotubes

Abstract

Described are articles including treads and/or other tire components that are formed at least in part by rubber compositions having solid agglomerated material comprising disaggregated carbon nanotubes. Such rubber compositions include a diene rubber component and a solid agglomerated material comprising disaggregated carbon nanotubes that consist of a continuous network of carbon nanotubes that contains 1) voids and 2) aggregates of carbon nanotubes having a mean size d50 of less than 5 μm, the voids and the aggregates together in an amount that is less than 60% of a predetermined surface area, as determined by electron microscopy imagery analysis, the remainder being the disaggregated carbon nanotubes in the continuous network that do not comprise a clearly defined shape.

Claims20

Dependent claims

A rubber composition based upon a cross-linkable rubber composition, the cross-linkable rubber composition comprising, in parts per 100 parts by weight of rubber:

a diene rubber;
a solid agglomerated material comprising disaggregated carbon nanotubes consisting of a continuous network of carbon nanotubes, the continuous network comprising 1) voids and 2) aggregates of carbon nanotubes having a d50 mean size of less than 5 μm, the voids and the aggregates together being in an amount that is less than 60% of a predetermined surface area, such percentage as determined by electron microscopy imagery analysis, the remainder being the disaggregated carbon nanotubes in the continuous network that do not comprise a clearly defined shape and being in an amount that is at least 40% of the predetermined surface area, wherein the disaggregated carbon nanotubes of the continuous network are oxidized;
a cure system.

Dependencies are inferred from the claim text.

Rubber compositions with dissagregated carbon nanotubes

Life of this patent

Rubber compositions with dissagregated carbon nanotubes

Life of this patent

Abstract

Claims20