Nano-tribology compositions and related methods including nano-sheets

Patent metadata

Field	Value
Publication number	US-9718967-B2
Application number	US-201414173369-A
Country	US
Kind code	B2
Filing date	Feb 5, 2014
Priority date	Jan 12, 2006
Publication date	Aug 1, 2017
Grant date	Aug 1, 2017

Abstract

Compositions having a plurality of nanoparticles and nano-sheets are disclosed. Methods of making and using the compositions are also disclosed.

First claim

What is claimed is:

1. A composition comprising:
a plurality of nanoparticles having open architecture;
a plurality of multifunctional nano-sheets; and
an organic medium intercalated in the nanoparticles.

2. The composition of claim 1 , wherein the plurality of nanoparticles and the plurality of nano-sheets independently comprise a material(selected from the group consisting of molybdenum disulfide, tungsten disulfide, niobium diselenide, graphite, hexagonal boron nitride, copper, calcium carbonate, polytetrafluoroethylene, dithiophosphate compounds, and combinations of any thereof.

3. The composition of claim 1 , wherein the nano-sheets are functionalized with organic functional groups or molecules.

4. The composition of claim 1 , wherein the nano-sheets are functionalized with inorganic functional groups or molecules.

5. The composition of claim 1 , wherein the nano-sheets are functionalized with a catalyst.

6. The composition of claim 1 , wherein the nano-sheets are functionalized with a dispersant agent.

7. The composition of claim 6 , wherein the dispersant agent comprises at least one material selected from the group consisting of amide compounds, borate compounds, and boride compounds.

8. The composition of claim 6 , wherein the dispersant agent comprises at least one of succinimide and disodium octaborate tetrahydrate.

9. The composition of claim 1 wherein the nano-sheets are functionalized with an anti-corrosion agent.

10. The composition of claim 9 , wherein the anticorrosion agent comprises at least one material selected from the group consisting of alkaline earth metal bisalkylphenolsulphonates, dithiophosphates, alkenylsuccinic acid half-amides, and combinations thereof.

11. The composition of claim 1 , wherein the nano-sheets are functionalized with a biocidal agent.

12. The composition of claim 11 , wherein the biocidal agent comprises at least one material selected from the group consisting of alkyl benzothiazole, hydroxylamine benzothiazole, an amine salt of an alkyl succinic acid, an amine salt of an alkenyl succinic acid, a partial alkyl ester of an alkyl succinic acid, a partial alkyl ester of an alkenyl succinic acid, and combinations of any thereof.

13. The composition of claim 1 , wherein the nano-sheets are functionalized with an antioxidant.

14. The composition of claim 13 , wherein the antioxidant comprises at least one material selected from the group consisting of hindered phenols, alkylated phenols, alkyl amines, aryl amines, 2,6-di-tert-butyl-4-methylphenol, 4,4′-di-tert-octyldiphenylamine, tent-butyl hydroquinone, tris(2,4-di-tert-butylpheny)phosphate, phosphites, thioesters, and combinations of any thereof.

15. The composition of claim 1 , wherein the nano-sheets comprise graphene nano-sheets, and wherein the nanoparticles comprise graphite nanoparticles.

16. The composition of claim 1 , wherein the nano-sheets comprise molybdenum disulfide nano-sheets, and wherein the nanoparticles comprise molybdenum disulfide nanoparticles.

17. The composition of claim 1 , wherein the nano-sheets comprise tungsten disulfide nano-sheets, and wherein the nanoparticles comprise tungsten disulfide nanoparticles.

18. The composition of claim 1 , wherein the nano-sheets comprise hexagonal boron nitride nano-sheets, and wherein the nanoparticles comprise hexagonal boron nitride nanoparticles.

19. The composition of claim 1 , wherein the organic medium comprises at least one material selected from the group consisting of oil media, grease media, alcohol media, composite oils, mineral oils, synthetic oils, canola oil, vegetable oil, soybean oil, corn oil, rapeseed oil, ethyl and methyl esters of rapeseed oil, monoglycerides, distill monoglycerides, diglycerides, acetic acid esters of monoglycerides, organic acid esters of monoglycerides, sorbitan, sorbitan esters of fatty acids, propylene glycol esters of fatty acids, polyglycerol esters of fatty acids, hydrocarbon oils, n-hexadecane, phospholipids, lecithins, dithiophosphate compounds, amide compounds, boron-containing compounds, and combinations of any thereof.

20. The composition of claim 1 , wherein the organic medium comprises an oil medium selected from the group consisting of a composite oil, a mineral oil, a synthetic oils, canola oil, vegetable oil, soybean oil, corn oil, a hydrocarbon oil, a mineral oil, and combinations of any thereof.

21. The composition of claim 1 wherein the nanoparticles are encapsulated with the organic medium.

22. The composition of claim 1 , wherein the nanoparticles have an average particle size of less than or equal to about 500 nm.

23. The composition of claim 1 , further comprising a base lubricant material that is different than the organic medium, wherein the nano-sheets and the intercalated nanoparticles are dispersed in the base lubricant material.

24. The composition of claim 23 , wherein the base lubricant material comprises at least one material selected from the group consisting of an oil, a grease, a plastic, a gel, a wax, a silicone, a hydrocarbon oil, a vegetable oil, corn oil, peanut oil, canola oil, soybean oil, a mineral oil, a paraffin oil, a synthetic oil, a petroleum gel, a petroleum grease, a hydrocarbon gel, a hydrocarbon grease, a lithium based grease, a fluoroether based grease, ethylenebistearamide, and combinations of any thereof.

25. The composition of claim 23 , wherein the base lubricant material comprises at least one material selected from the group consisting of an oil, a grease, a plastic, a gel, a wax, a silicone, and combinations of any thereof.

26. The composition of claim 23 , wherein the base lubricant material comprises an oil or a grease.

27. The composition of claim 26 , wherein the base lubricant material comprises at least one material selected from the group consisting of a mineral oil, a paraffin oil, a synthetic oil, a petroleum grease, a hydrocarbon grease, a lithium based grease, and combinations of any thereof.

28. The composition of claim 1 , thither comprising an emulsifier.

29. The composition of claim 28 , wherein the emulsifier comprises at least one material selected from the group consisting of lecithins, phospholipids, soy lecithins, detergents, distilled monoglycerides, monoglycerides, diglycerides, acetic acid esters of monoglycerides, organic acid esters of monoglycerides, sorbitan esters of fatty acids, propylene glycol esters of fatty acids, polyglycerol esters of fatty acids, compounds containing phosphorous, compounds containing sulfur, compounds containing nitrogen, and combinations of any thereof.

30. The composition of claim 28 , wherein the emulsifier comprises a compound containing phosphorous.

31. The composition of claim 28 , wherein the emulsifier comprises a phospholipid.

32. The composition of claim 28 , wherein the emulsifier comprises a lecithin.

33. The composition of claim 1 , further comprising a surfactant.

34. The composition of claim 33 , wherein the surfactant comprises at least one material selected from the group consisting of 2-alkyl-succinic acid 1-propyl ester, canola oil, dialkyl hydrogen phosphite, glycerol mono oleate, lecithin, octadecylamine, oleic acid, oleylamide, oleylamine, poly(methyl methacrylate), sodium stearate, Span 80, stearic acid, thiocarbamates (m

Assignees

• Univ Arkansas

Inventors

• Malshe Ajay P

Classifications

• C10M171/06

  Particles of special shape or size · CPC title

• C10M2207/1285

  used as thickening agents · CPC title

• C10N2030/56

  Boundary lubrication or thin film lubrication · CPC title

• C10N2010/06

  Groups 3 or 13 · CPC title

• C10M2201/04

  Elements · CPC title