Electrospray painted article containing thermally exfoliated graphite oxide and method for their manufacture

• US 8,053,508 B2
• Filed: 09/11/2008
• Issued: 11/08/2011
• Est. Priority Date: 10/14/2005
• Status: Active Grant

• Current Assignee: The Trustees of Princeton University (Princeton University)
• Original Assignee: The Trustees of Princeton University (Princeton University)
• Inventors: Prud'Homme, Robert K., Aksay, Ilhan A., Korkut, Sibel
• Primary Examiner(s): HENDRICKSON, STUART L
• Application Number:
  US12/208,692
• Publication Number:
  US 20090127514A1
• Time in Patent Office: 1,153 Days
• Field of Search: 524/495, 427/483
• US Class Current: 524/495
• CPC Class Codes: B82Y 30/00 Nanotechnology for materials or surface science, e.g. nanocomposites
• CPC Class Codes: B82Y 40/00 Manufacture or treatment of nanostructures
• CPC Class Codes: C01B 2204/32 Size or surface area
• CPC Class Codes: C01B 32/192 starting from graphitic oxides
• CPC Class Codes: C01B 32/225 Expansion; Exfoliation
• CPC Class Codes: C01B 32/23 Oxidation
• CPC Class Codes: H01G 4/206 inorganic and synthetic material
• CPC Class Codes: H05K 1/095 for polymer thick films, i.e. having a permanent organic polymeric binder
• CPC Class Codes: H05K 2201/0323 Carbon
• CPC Class Codes: H05K 3/0091 Apparatus for coating printed circuits using liquid non-metallic coating compositions
• CPC Class Codes: H05K 3/10 in which conductive material is applied to the insulating support in such a manner as to form the desired conductive pattern
• CPC Class Codes: Y02E 60/10 Energy storage using batteries
• CPC Class Codes: Y02E 60/13 Energy storage using capacitors
• CPC Class Codes: Y02E 60/32 Hydrogen storage
• CPC Class Codes: Y10T 428/13 Hollow or container type article [e.g., tube, vase, etc.]
• CPC Class Codes: Y10T 428/1341 Contains vapor or gas barrier, polymer derived from vinyl chloride or vinylidene chloride, or polymer containing a vinyl alcohol unit
• CPC Class Codes: Y10T 428/1379 Contains vapor or gas barrier, polymer derived from vinyl chloride or vinylidene chloride, or polymer containing a vinyl alcohol unit
• CPC Class Codes: Y10T 428/2982 Particulate matter [e.g., sphere, flake, etc.]

Abstract

A painted polymer part containing a conductive polymer composition containing at least one polymer and a modified graphite oxide material, which is a thermally exfoliated graphite oxide with a surface area of from about 300 m²/g to 2600 m²/g, wherein the painted polymer part has been electrospray painted.

Claims

1. A painted polymer part, comprising:

a conductive polymer composite, comprising;

at least one polymer and a modified graphite oxide material, comprising;

thermally exfoliated graphite oxide having a surface area of from about 300 m²/g to 2600 m²/g, and

wherein the polymer part has been electrospray painted.

2. The polymer part of claim 1, wherein the thermally exfoliated graphite oxide has a bulk density of from about 40 kg/m³ to 0.1 kg/m³.

3. The polymer part of claim 1, wherein the thermally exfoliated graphite oxide has a C/O ratio of from about 60/40 to 95/5.

4. The polymer part of claim 3, wherein the thermally exfoliated graphite oxide has a C/O ratio of from about 65/35 to 85/15.

5. The polymer part of claim 1, wherein the at least one polymer comprises one or more polymers selected from the group consisting of polyethylene, polypropylene and copolymers thereof, polyesters, nylons, polystyrenes, polycarbonates, polycaprolactones, polycaprolactams, fluorinated ethylenes, polyvinyl acetate and its copolymers, polyvinyl chloride, polymethylmethacrylate and acrylate copolymers, high impact polystyrene, styrenic sheet molding compounds, polycaprolactones, polycaprolactams, fluorinated ethylenes, styrene acrylonitriles, polyimides, epoxys, polyurethanes, poly[4,4′

-methylenebis(phenyl isocyanate)-alt-1,4-butanediol/poly(butylene adipate)], poly[4,4′

-methylenebis(phenyl isocyanate)-alt-1,4-butanediol/poly(butylene adipate)], poly[4,4′

-methylenebis(phenyl isocyanate)-alt-1,4-butanediol/poly(butylene adipate)], poly[4,4′

-methylenebis(phenyl isocyanate)-alt-1,4-butanediol/di(propylene glycol)/polycaprolactone, poly[4,4′

-methylenebis(phenyl isocyanate)-alt-1,4-butanediol/polytetrahydrofuran, amine terminated polybutadienes, carboxyl terminated polybutadienes, polybutadiene, dicarboxy terminated butyl rubber, styrene/butadiene copolymers, polyisoprene, poly(styrene-co-butadiene), polydimethysiloxane, and natural latex rubber.

6. The polymer part of claim 5, wherein the at least one polymer comprises one or more polymers selected from the group consisting of polyethylene, polypropylene and copolymers thereof, polyesters, nylons, polystyrenes, polycarbonates, styrene/butadiene copolymers, and high impact polystyrene.

7. The polymer part of claim 1, wherein the thermally exfoliated graphite oxide has a surface area of from about 300 m²/g to 1100 m²/g.

8. The polymer part of claim 1, wherein the polymer composite comprises between 0.1 and 20 weight percent thermally exfoliated graphite oxide, based on the total weight of the composite.

9. The polymer part of claim 1, wherein the polymer composite comprises between 0.1 to 5 weight percent thermally exfoliated graphite oxide, based on the total weight of the composite.

10. The polymer part of claim 1, wherein the polymer composite comprises between 1.5 and 5 weight percent thermally exfoliated graphite oxide, based on the total weight of the composite.

11. The polymer part of claim 1, wherein the polymer composite comprises between 0.5 to 2 weight percent thermally exfoliated graphite oxide, based on the total weight of the composite.

12. A process for painting a polymer part, comprising the step of electrospray painting a polymer comprising a conductive polymer composite, comprising at least one polymer and a modified graphite oxide material, comprising thermally exfoliated graphite oxide having a surface area of from about 300 m²/g to 2600 m²/g.

13. The process of claim 12, wherein the thermally exfoliated graphite oxide has a bulk density of from about 40 kg/m³ to 0.1 kg/m³.

14. The process of claim 12, wherein the thermally exfoliated graphite oxide has a C/O ratio of from about 60/40 to 95/5.

15. The process of claim 12, wherein the polymer part of claim 3, wherein the thermally exfoliated graphite oxide has a C/O ratio of from about 65/35 to 85/15.

16. The process of claim 12, wherein the at least one polymer comprises one or more polymers selected from the group consisting of polyethylene, polypropylene and copolymers thereof, polyesters, nylons, polystyrenes, polycarbonates, polycaprolactones, polycaprolactams, fluorinated ethylenes, polyvinyl acetate and its copolymers, polyvinyl chloride, polymethylmethacrylate and acrylate copolymers, high impact polystyrene, styrenic sheet molding compounds, polycaprolactones, polycaprolactams, fluorinated ethylenes, styrene acrylonitriles, polyimides, epoxys, polyurethanes, poly[4,4′

-methylenebis(phenyl isocyanate)-alt-1,4-butanediol/poly(butylene adipate)], poly[4,4′

-methylenebis(phenyl isocyanate)-alt-1,4-butanediol/poly(butylene adipate)], poly[4,4′

-methylenebis(phenyl isocyanate)-alt-1,4-butanediol/poly(butylene adipate)], poly[4,4′

-methylenebis(phenyl isocyanate)-alt-1,4-butanediol/di(propylene glycol)/polycaprolactone, poly[4,4′

-methylenebis(phenyl isocyanate)-alt-1,4- butanediol/polytetrahydrofuran, amine terminated polybutadienes, carboxyl terminated polybutadienes, polybutadiene, dicarboxy terminated butyl rubber, styrene/butadiene copolymers, polyisoprene, poly(styrene-co-butadiene), polydimethysiloxane, and natural latex rubber.

17. The process of claim 16, wherein the at least one polymer comprises one or more polymers selected from the group consisting of polyethylene, polypropylene and copolymers thereof, polyesters, nylons, polystyrenes, polycarbonates, styrene/butadiene copolymers, and high impact polystyrene.

18. The process of claim 12, wherein the polymer composite comprises between 0.1 and 20 weight percent thermally exfoliated graphite oxide, based on the total weight of the composite.

19. The process of claim 12, wherein the polymer composite comprises between 0.1 to 5 weight percent thermally exfoliated graphite oxide, based on the total weight of the composite.

20. The process of claim 12, wherein the thermally exfoliated graphite oxide has a surface area of from about 300 m²/g to 1100 m²/g.