Conductive circuit containing a polymer composition containing thermally exfoliated graphite oxide and method of making the same

Patent metadata

Field	Value
Publication number	US-2015173188-A1
Application number	US-201414515019-A
Country	US
Kind code	A1
Filing date	Oct 15, 2014
Priority date	Oct 14, 2005
Publication date	Jun 18, 2015
Grant date	—

Abstract

A conductive circuit containing a polymer composite, which contains at least one polymer and a modified graphite oxide material, containing thermally exfoliated graphite oxide having a surface area of from about 300 m 2 /g to 2600 m 2 /g, and a method of making the same.

First claim

1 . A conductive circuit, comprising a 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 m 2 /g to 2600 m 2 /g.

2 . The conductive circuit of claim 1 , wherein the thermally exfoliated graphite oxide has a surface area of from about 400 m 2 /g to 2600 m 2 /g.

3 . The conductive circuit of claim 1 , wherein the thermally exfoliated graphite oxide has a surface area of from about 500 m 2 /g to 2600 m 2 /g.

4 . The conductive circuit of claim 1 , wherein the thermally exfoliated graphite oxide has a bulk density of from about 40 kg/m 3 to 0.1 kg/m 3 .

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

6 . The conductive circuit of claim 1 , wherein the thermally exfoliated graphite oxide has a C/ 0 ratio of from about 65/35 to 85/15.

7 . The conductive circuit 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.

8 . A method of making a conductive circuit, comprising the step of patterning the circuit by application of a fluid, comprising at least one polymer, at least one solvent, and a modified graphite oxide material, comprising thermally exfoliated graphite oxide having a surface area of from about 300 m 2 /g to 2600 m 2 /g.

9 . The method of claim 8 , wherein the method further comprises the step of drying the conductive ink.

10 . The method of claim 8 , wherein the thermally exfoliated graphite oxide has a surface area of from about 400 m 2 /g to 2600 m 2 /g.

11 . The method of claim 8 , wherein the thermally exfoliated graphite oxide has a surface area of from about 500 m 2 /g to 2600 m 2 /g.

12 . The method of claim 8 , wherein the thermally exfoliated graphite oxide has a bulk density of from about 40 kg/m 3 to 0.1 kg/m 3 .

13 . The method of claim 8 , wherein the thermally exfoliated graphite oxide has a C/O ratio of from about 60/40 to 95/5.

14 . The method of claim 8 , wherein the thermally exfoliated graphite oxide has a C/O ratio of from about 65/35 to 85/15.

15 . The method of claim 8 , 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, polymethylrnethacrylate 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.

16 . The method of claim 8 , wherein the solvent is one or more selected from the group consisting of water, n-methylpyrolidone (NMP), dimethyformamide (DMF), tetrahydrofuran (THF), alcohols, glycols, aliphatic and aromatic esters, phthalates, dibutyl phthalate, chlorinated solvents such as methylene chloride, acetic esters, aldehydes, glycol ethers, propionic esters.

17 . The method of claim 16 , wherein the glycols are one or more selected from the group consisting of ethylene glycol, propylene glycol, and butylene glycol.

18 . The method of claim 16 , wherein the solvent is water.

Assignees

• Univ Princeton

Inventors

• Prud Homme Robert K
• Aksay Ilhan A

Classifications

• H05K3/0091

  Apparatus for coating printed circuits using liquid non-metallic coating compositions · CPC title

• H05K3/10

  in which conductive material is applied to the insulating support in such a manner as to form the desired conductive pattern · CPC title

• H05K2201/0323

  Carbon · CPC title

• H05K1/095 Primary

  for polymer thick films, i.e. having a permanent organic polymeric binder · CPC title

• Y02E60/32

  Hydrogen storage · CPC title