Nickel inks and oxidation resistant and conductive coatings

Patent metadata

Field	Value
Publication number	US-9416290-B2
Application number	US-201314655557-A
Country	US
Kind code	B2
Filing date	Dec 27, 2013
Priority date	Dec 28, 2012
Publication date	Aug 16, 2016
Grant date	Aug 16, 2016

Abstract

A conductive ink may include a nickel component, a polycarboxylic acid component, and a polyol component, the polycarboxylic acid component and the polyol component being reactable to form a polyester component. The polyester component may be formed in situ in the conductive ink from a polyol component and a polycarboxylic acid component. The conductive ink may include a carbon component. The conductive ink may include an additive component. The conductive ink may include nickel flakes, graphene flakes, glutaric acid, and ethylene glycol. The conductive ink may be printed (e.g., screen printed) on a substrate and cured to form a conductive film. A conductive film may include a nickel component and a polyester component.

First claim

What is claimed is:

1. A conductive ink comprising:
a conductive nickel component;
a conductive carbon component; and
a polar liquid phobicity additive.

2. The conductive ink of claim 1 , wherein the conductive nickel component comprises nickel flakes.

3. The conductive ink of claim 2 , wherein the nickel flakes comprise a longest dimension of 10 μm to 15 μm.

4. The conductive ink of claim 1 , wherein the conductive carbon component comprises graphene flakes.

5. The conductive ink of claim 1 , wherein the polar liquid phobicity additive comprises dimer diamine.

6. The conductive ink of claim 1 , further comprising a printability enhancing additive.

7. The conductive ink of claim 6 , wherein the printability enhancing additive comprises styrene.

8. The conductive ink of claim 6 , wherein the printability enhancing additive comprises a peroxide.

9. The conductive ink of claim 8 , wherein the peroxide comprises benzoyl peroxide.

10. The conductive ink of claim 8 , wherein the peroxide comprises at least one of a 2-butanol peroxide, 2,4-chlorobenzoyl peroxide, and lauryl peroxide.

11. The conductive ink of claim 1 , further comprising a polycarboxylic acid component and a polyol component, the polycarboxylic acid component and the polyol component being reactable to form a polyester component.

12. The conductive ink of claim 11 , wherein the polycarboxylic acid component comprises glutaric acid and wherein the polyol component comprises ethylene glycol.

13. The conductive ink of claim 1 , wherein a nickel film printed utilizing the conductive ink has a sheet resistance of 0.4 Ohms per square per mil (Ohms/sq/mil) to 0.5 Ohms/sq/mil.

14. A method of fabricating a conductive ink, the method comprising:
providing a mixture comprising a conductive nickel component and a conductive carbon component; and
dispersing a polar liquid phobicity component in the mixture.

15. The method of claim 14 , wherein the conductive nickel component comprises nickel flakes.

16. The method of claim 15 , further comprising removing nickel oxide from one or more surfaces of the nickel flakes.

17. The method of claim 16 , wherein removing the nickel oxide comprises heating the nickel flakes in the presence of a polycarboxylic acid component to a temperature between 80° C. and 120° C.

18. The method of claim 15 , wherein the polar liquid phobicity additive comprises dimer diamine.

19. The method of claim 15 , further comprising mixing the conductive nickel component with mixing media and reducing a conductive nickel component particle size, wherein the mixing media comprises beads.

20. The method of claim 15 , wherein providing the mixture comprises:
dispersing the conductive nickel component in a polyol component;
dispersing a polycarboxylic acid component in the polyol component, the polycarboxylic acid component and the polyol component being reactable to form a polyester component.

Assignees

• Nthdegree Tech Worldwide Inc

Inventors

• Lockett Vera N
• Hartman Alexandra E
• Gustafson John G
• Lowenthal Mark D
• Ray William J
• Daneshi Leila

Classifications

• C08K5/092

  Polycarboxylic acids · CPC title

• C09D11/03

  characterised by features other than the chemical nature of the binder · CPC title

• C08K5/053

  Polyhydroxylic alcohols · CPC title

• H01B1/02

  mainly consisting of metals or alloys · CPC title

• C08K3/042

  Graphene or derivatives, e.g. graphene oxides · CPC title