Conductive water borne coatings and methods for enhancing coating conductivity

Patent metadata

Field	Value
Publication number	US-10000644-B2
Application number	US-201615187147-A
Country	US
Kind code	B2
Filing date	Jun 20, 2016
Priority date	Jul 3, 2013
Publication date	Jun 19, 2018
Grant date	Jun 19, 2018

Abstract

The present disclosure is directed to conductive, translucent water-borne conductive coatings comprising a water-borne lubricant coating base material, an amount of PEDOT:PSS solution, and an amount of metal-containing nanowire, methods for making the same, and articles coated with such coatings.

First claim

We claim:

1. A translucent conductive coating material comprising:
an amount of water-borne polyurethane;
poly(3,4-ethylenedioxythiophene) poly(styrenesulfonate) solution in an amount of from about 15 to about 35 weight percent;
and metal-containing nanowires in an amount from about 0.1 to about 0.5 weight percent.

2. The coating material of claim 1 , wherein the polyurethane is added in an amount of from about 65 to about 85 weight percent.

3. The coating material of claim 1 wherein the metal-containing nanowires comprise copper-nickel nanowires.

4. The coating material of claim 1 , wherein the coating comprises a sheet resistance of from about 10 3 to about 10 6 ohms/square.

5. A vehicle comprising a topcoat comprising the coating material of claim 1 .

6. A stationary structure comprising a topcoat comprising the coating material of claim 1 .

7. The coating material of claim 1 wherein the metal-containing nanowires comprise: copper-containing nanowires; silver-containing nanowires; or combinations thereof.

8. A method for enhancing the conductivity of a substantially non-conductive surface comprising the step of:
applying a translucent conductive coating material to a substantially non-conductive surface, said translucent conductive coating comprising an amount of water-borne polyurethane coating combined with an amount of PEDOT:PSS solution and of metal-containing nanowires, wherein said translucent conductive coating material contains water-borne polyurethane, poly(3,4-ethylenedioxythiophene)poly (styrenesulfonate) solution in an amount of from about 15 to about 35 weight percent; and metal-containing nanowires in an amount from about 0.1 to about 0.5 weight percent.

9. The method of claim 8 , wherein the metal-containing nanowires comprise copper-containing nanowires, silver-containing nanowires, or combinations thereof.

10. The method of claim 8 , wherein the metal-containing nanowires are copper-nickel-containing nanowires.

11. The method of claim 8 , wherein the coating comprises a water-borne polyurethane coating in an amount of from about 65 to about 85 weight percent.

12. The method of claim 8 , wherein the coating has a sheet resistance of from about 10 3 to about 10 6 ohms/square.

13. A method for making a translucent conductive coating material comprising the steps of:
dispensing an amount of metal-containing nanowires in isopropyl alcohol to a container;
dispersing the nanowires in isopropyl alcohol;
removing excess isopropyl alcohol from the container;
adding an amount of water-borne polyurethane coating to the container with the nanowires;
mixing the contents of the container;
adding an amount of poly(3,4-ethylenedioxythiophene) poly(styrenesulfonate) solution to the container to obtain a mixture;
mixing the contents of the container; and
filtering the mixture, wherein said translucent conductive coating material contains water-borne polyurethane, poly(3,4-ethylenedioxythiophene) poly(styrenesulfonate) solution in an amount of from about 15 to about 35 weight percent; and metal-containing nanowires in an amount from about 0.1 to about 0.5 weight percent.

14. The method of claim 13 , wherein, in the step of dispensing metal-containing nanowires, the metal-containing nanowires comprise copper-containing nanowires; silver-containing nanowires; or combinations thereof.

15. The method of claim 13 , wherein, in the step of dispensing metal-containing nanowires, the metal-containing nanowires comprise copper-nickel nanowires.

16. The method of claim 13 , wherein, in the step of adding an amount of water-borne polyurethane coating to the container with the nanowires, the polyurethane coating is added in an amount of from about 65 to about 85 weight percent.

17. The method of claim 13 , wherein, in the step of dispersing the nanowires in isopropyl alcohol, the metal-containing nanowires are dispersed in the isopropyl alcohol by sonicating the nanowires.

18. The method of claim 13 , wherein, in the steps of mixing the contents of the container, the contents of the container are mixed by ultrasonicating the contents.

19. The method of claim 13 , wherein the resulting translucent conductive coating comprises a sheet resistance ranging from about of about 10 3 to about 10 6 ohms/square.

20. The method of claim 13 , wherein, in the step of adding an amount of poly(3,4-ethylenedioxythiophene) poly(styrenesulfonate) solution to the container to obtain a mixture, poly(3,4-ethylenedioxythiophene) poly(styrenesulfonate) solution is added in an amount of from about 15 to 35 weight percent.

Assignees

• Boeing Co

Inventors

• Riley Terrell D
• Corona Alexandra E
• Broadbent Christopher Lamar
• Shokri Shahnaz
• Le Quynhgiao Nguyen

Classifications

• C08K2201/011

  Nanostructured additives · CPC title

• C09D175/04

  Polyurethanes · CPC title

• B64D45/02

  Lightning protectors; Static dischargers · CPC title

• B05D5/12

  to obtain a coating with specific electrical properties · CPC title

• H01B1/22

  the conductive material comprising metals or alloys · CPC title