Polyvinylidene fluoride composites and methods for preparing same
AssigneeHyperion Catalysis International, Inc.
InventorsChunming Niu, Lein Ngaw, Alan Fischer, Robert Hoch
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Abstract
An electrically conductive composite comprising a polyvinylidene fluoride polymer or copolymer and carbon nanotubes is provided. Preferably, carbon nanotubes may be present in the range of about 0.5–20% by weight of the composite. The composites are prepared by dissolving the polymer in a first solvent to form a polymer solution and then adding the carbon nanotubes into the solution. The solution is mixed using an energy source such as a sonicator or a Waring blender. A precipitating component is added to precipitate out a composite comprising the polymer and the nanotubes. The composite is isolated by filtering the solution and drying the composite.
Claims27
A polymer composite comprising:
- polyvinylidene fluoride;
- and
- carbon nanotubes in an amount from about 0.01 to 30% by weight of said composite, wherein said carbon nanotubes have a diameter less than about 100 nanometers, and
- wherein said polymer composite has a bulk resistivity of less than about 10 ohm-cm.
An electrically conductive composite made by a method comprising the steps of:
- (a) dissolving a polymer selected from the group consisting of polyvinylidene fluoride and copolymer of vinylidene fluoride and another monomer in a solvent to form a solution;
- (b) dispersing nanotubes in said solution;
- and
- (c) adding a precipitating component into said solution to precipitates a composite comprising said polymer and said nanotubes, said composite having a bulk resistivity of less than about 10 ohm-cm.
A polymer composite comprising:
- a copolymer of vinylidene fluoride and another monomer, and
- carbon nanotubes in an amount from about 0.01 to 30% by weight of said composite, wherein said nanotubes have a diameter less than about 100 nanometers, and
- wherein said polymer composite has a bulk resistivity of loss than about 10 ohm-cm.
Dependencies are inferred from the claim text.