CARBON NANOSTRUCTURE PREBLENDS AND THEIR APPLICATIONS
First Claim
1. A preblend composition comprising carbon nanostructures and a particulate solid, said preblend composition prepared by wet-mixing said carbon nanostructures and said particulate solid in a liquid medium followed by drying;
- wherein the preblend composition comprises solid core particles of said particulate solid coated with a shell of said carbon nanostructures forming a core-shell material;
wherein said particulate solid comprises polymer beads; and
wherein the carbon nanostructures comprise single-walled carbon nanotubes.
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Abstract
A method for preparing a “preblend” of nanostructured carbon, such as nanotubes, fullerenes, or graphene, and a particulate solid, such as polymer beads, carbon black, graphitic particles or glassy carbon involving wet-mixing and followed by optional drying to remove the liquid medium. The preblend may be in the form of a core-shell powder material with the nanostructured carbon as the shell on the particulate solid core. The preblend may provide particularly improved dispersion of single-walled nanotubes in ethylene-α-olefin elastomer compositions, resulting in improved reinforcement from the nanotubes. The improved elastomer compositions may show simultaneous improvement in both modulus and in elongation at break. The elastomer compositions may be formed into useful rubber articles.
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Citations
8 Claims
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1. A preblend composition comprising carbon nanostructures and a particulate solid, said preblend composition prepared by wet-mixing said carbon nanostructures and said particulate solid in a liquid medium followed by drying;
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wherein the preblend composition comprises solid core particles of said particulate solid coated with a shell of said carbon nanostructures forming a core-shell material; wherein said particulate solid comprises polymer beads; and wherein the carbon nanostructures comprise single-walled carbon nanotubes. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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Specification