Functionalized graphene sheets having high carbon to oxygen ratios

Patent metadata

Field	Value
Publication number	US-10017632-B2
Application number	US-201615362914-A
Country	US
Kind code	B2
Filing date	Nov 29, 2016
Priority date	Feb 5, 2008
Publication date	Jul 10, 2018
Grant date	Jul 10, 2018

Abstract

Functionalized graphene sheets having a carbon to oxygen molar ratio of at least about 23:1 and method of preparing the same.

First claim

The invention claimed is:

1. Functionalized graphene sheets comprising:
a carbon to oxygen molar ratio of at least about 23:1;
a bulk density of about 0.1 kg/m 3 to about 40 kg/m 3 ;
fully exfoliated sheets of graphene; and
wherein the functionalized graphene sheets
have an X-ray diffraction pattern that displays no signature corresponding to graphite or graphite oxide; and
are dry.

2. The functionalized graphene sheets of claim 1 comprising a surface area of about 350 and 2,400 m 2 /g.

3. A polymer composite or resin comprising the functionalized graphene sheets of claim 1 and a polymer.

4. The polymer composite comprising of claim 3 , wherein the polymer is one or more of acrylonitrile/butadiene/styrene (ABS), polycarbonates (PC), polyamides, polyterephthalamides, polyesters, poly(butylene terephthalate) (PBT), poly(ethylene terephthalate) (PET), poly(phenylene oxide) (PPO), polysulphone (PSU), polyetherketone (PEK), polyetheretherketone (PEEK), polyimides, polyoxymethylene (POM), poly(lactic acid), poly(acrylonitrile), styrene/acrylonitrile polymers (SAN), polyetherimides, polystyrene, high impact polystyrene, liquid crystalline polymers (LCPs), aramides, polytetrafluoroethylene (PTFE), fluorinated ethylene propylene polymers (PEP), poly(vinyl fluoride), poly(vinylidene fluoride), poly(vinylidene chloride), poly(vinyl chloride), polyolefins, polyethylene, polypropylene, poly(vinyl acetates), acrylate polymers, poly(methyl methacrylate), polysiloxanes, polydimethylenesiloxane, elastomers, copolyetheresters, rubbers, butyl rubber, styrene/butadiene copolymers, polyisoprene, natural rubber, and polysiloxanes, epoxy polymers, polyureas, alkyds, cellulosic polymers, and polyethers.

5. The polymer composite of claim 3 , wherein the polymer is two or more of polyterephthalamide, PPO, and PTFE.

6. The polymer composite of claim 5 in the form of a coating.

7. The polymer composite of claim 5 in the form of a printed material.

8. The polymer composite of claim 5 in the form of a molded article.

9. The polymer composite of claim 5 in the form of an extruded article.

10. The polymer composite of claim 3 comprising an electrical conductivity of at least about 10 −6 S/m to about 10 5 S/m.

11. The polymer composite of claim 3 , wherein the polymer is a non-melt-processible polymer.

Assignees

• Univ Princeton

Inventors

• Aksay Ilhan A
• Milius David L
• Korkut Sibel
• Prud'Homme Robert K

Classifications

• H01B1/04

  mainly consisting of carbon-silicon compounds, carbon or silicon · CPC title

• C08L71/123

  not modified by chemical after-treatment · CPC title

• C08K3/04

  Carbon · CPC title

• C09D7/62 Primary

  modified by treatment with other compounds · CPC title

• C01P2006/10

  Solid density · CPC title