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, 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;
- andwherein the core particles are carbon black particles.
5 Assignments
0 Petitions
Accused Products
Abstract
A method for preparing a “preblend” of nano-structured carbon, such as nanotubes, fullerenes, or graphene, and a particulate solid, such as 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 nano-structured carbon as the shell on the particulate solid core. The preblend may provide particularly improved dispersion of single-wall 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.
-
Citations
35 Claims
-
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, 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;
- and
wherein the core particles are carbon black particles. - View Dependent Claims (2, 3, 4, 5, 6)
- and
-
7. A method for dispersing carbon nanostructures in a polymer comprising:
-
wet-mixing in a liquid medium a blend comprising said carbon nanostructures and a particulate solid; drying said blend to form a preblend of the carbon nanostructures and the particulate for adding to a polymer in a conventional compounding process; wherein said preblend forms a core-shell structure comprising a shell of said carbon nanostructures coating a core comprising a particle of said particulate solid; and wherein said particulate solid is carbon black. - View Dependent Claims (8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
-
-
19. A method for dispersing carbon nanotubes (“
- CNT”
) in an elastomer comprising;obtaining a preblend of CNT and carbon black which was formed by wet-mixing the CNT and the carbon black in a liquid medium followed by drying, wherein said preblend comprises a core-shell structure comprising a shell of said CNT coating a core comprising said carbon black; mixing said preblend into said elastomer with other ingredients to form an elastomer composition. - View Dependent Claims (20, 21, 22, 23, 24, 25)
- CNT”
-
26. 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;
- and
wherein the core particles are carbon black particles. - View Dependent Claims (27, 28, 29, 30, 31)
- and
-
32. A method comprising:
-
dispersing carbon nanostructures in a liquid medium to form a dispersion; blending the dispersion with a particulate solid to form a blend; and drying said blend to form a preblend; wherein the preblend comprises a core-shell material comprising a core of particles of said particulate solid coated with a shell of said carbon nanostructures; and wherein the particulate solid is carbon black. - View Dependent Claims (33, 34, 35)
-
Specification