Wear resistant and high temperature resistant elastomer nanocomposites

Patent metadata

Field	Value
Publication number	US-10465064-B2
Application number	US-201715708416-A
Country	US
Kind code	B2
Filing date	Sep 19, 2017
Priority date	Sep 23, 2016
Publication date	Nov 5, 2019
Grant date	Nov 5, 2019

Abstract

An elastomer nanocomposite comprises an elastomer comprising a non-functionalized first elastomer and a functionalized second elastomer and a functionalized filler crosslinked with the elastomer, wherein the non-functionalized first elastomer and the functionalized second elastomer are independently an ethylene-propylene-diene monomer rubber; a nitrile butadiene rubber; a hydrogenated nitrile butadiene rubber; a butadiene rubber; a styrene-butadiene rubber; an acrylonitrile butadiene rubber; an acrylate-butadiene rubber; a natural rubber; a polyisoprene rubber; a polychloroprene rubber; an ethylene-vinyl acetate rubber; a polypropylene oxide rubber; a polypropylene sulfide rubber; a fluoroelastomer; a perfluoroelastomer; a polyurethane rubber, or a functionalized derivative thereof.

First claim

What is claimed is:

1. An elastomer nanocomposite comprising
an elastomer comprising a non-functionalized first elastomer and a functionalized second elastomer; and
a functionalized filler crosslinked with the elastomer;
wherein the non-functionalized first elastomer and the functionalized second elastomer are each independently an ethylene-propylene-diene monomer rubber; a nitrile butadiene rubber; a hydrogenated nitrile butadiene rubber; a butadiene rubber; a styrene-butadiene rubber; an acrylonitrile butadiene rubber; an acrylate-butadiene rubber; a natural rubber; a polyisoprene rubber; a polychloroprene rubber; an ethylene-vinyl acetate rubber; a polypropylene oxide rubber; a polypropylene sulfide rubber; a fluoroelastomer; a perfluoroelastomer; or a polyurethane rubber; or a functionalized derivative thereof, and
the non-functionalized first elastomer is crosslinked with the functionalized second elastomer.

2. The elastomer nanocomposite of claim 1 , wherein the weight ratio of the non-functionalized first elastomer relative to the functionalized second elastomer is about 200:1 to about 3:1.

3. The elastomer nanocomposite of claim 1 , wherein the functionalized elastomer comprises one or more of the following: carboxylated nitrile butadiene rubber; carboxylated hydrogenated nitrile butadiene rubber; amidated nitrile butadiene rubber; maleated ethylene-propylene-diene monomer rubber; hydroxylated ethylene-propylene-diene monomer rubber; sulfonated ethylene-propylene-diene monomer rubber; carboxylated styrene-butadiene rubber; or sulfonated styrene-butadiene rubber.

4. The elastomer nanocomposite of claim 1 , wherein the non-functionalized first elastomer comprises one or more of the following: nitrile butadiene rubber; hydrogenated nitrile butadiene rubber; ethylene-propylene-diene monomer rubber; or styrene-butadiene rubber.

5. The elastomer nanocomposite of claim 1 , wherein the functionalized filler has a functional group comprising one or more of the following: a sulfonate group; a phosphonate group; a carboxylate group; a carboxyl group; a sulfonic acid group; a phosphonic acid group; an amino group; a hydroxyl group; a thiol group, or an alkyl group.

6. The elastomer nanocomposite of claim 5 , wherein the functionalized filler comprises a carboxyl group, a carboxylate group, or a combination thereof.

7. The elastomer nanocomposite of claim 1 , wherein the functionalized filler comprises one or more of the following: functionalized carbon nanotubes; functionalized carbon nanofiber; functionalized graphene; functionalized graphene oxide; functionalized graphite; functionalized carbon black; functionalized nanodiamonds; functionalized fullerene; functionalized halloysites; functionalized clays; functionalized silicate; functionalized silica; functionalized polysilsequioxanes; functionalized metal nanowires; or functionalized silicon nanowires.

8. The elastomer nanocomposite of claim 1 , wherein the functionalized filler comprises carbon nanotubes functionalized with a carboxyl group, a carboxylate group, or a combination thereof.

9. The elastomer nanocomposite of claim 1 , wherein the functionalized filler is present in an amount of about 0.5 part to about 60 parts by weight based on 100 parts by weight of the elastomer.

10. The elastomer nanocomposite of claim 1 , wherein the functionalized filler is crosslinked with the elastomer via a crosslinker comprising a metal ion of a metal in Group 1 through Group 14 of the Periodic Table.

11. The elastomer nanocomposite of claim 10 , wherein the metal ion includes one or more of the following: magnesium ions; calcium ions; strontium ions; barium ions; radium ions; zinc ions; cadmium ions; aluminum ions; gallium ions; indium ions; thallium ions; titanium ions; or zirconium ions.

12. The elastomer nanocomposite of claim 11 , wherein the metal ion is Zr 4+ , Zn 2+ , or Al 3+ , or a combination thereof.

13. The elastomer nanocomposite of claim 10 , wherein the crosslinker is present in an amount of about 0.1 to about 12 parts per 100 parts by weight of the elastomer.

14. An elastomer nanocomposite comprising
an elastomer comprising about 50 wt. % to about 99 wt. % of a non-functionalized first elastomer which is a hydrogenated nitrile butadiene rubber, and about 1 wt. % to about 50 wt. % of a functionalized second elastomer, which is a carboxylated hydrogenated nitrile butadiene rubber, each based on the sum of the weights of the hydrogenated nitrile butadiene rubber and the carboxylated hydrogenated nitrile butadiene rubber; and
a functionalized filler comprising carbon nanotubes functionalized with a carboxyl group, a carboxylate group, or a combination thereof;
wherein the elastomer is crosslinked with the functionalized filler via a crosslinker that comprises a multivalent metal ion, the multivalent metal ion comprising at least one of Zr 4+ ; Zn 2+ ; or Al 3+ .

15. The elastomer nanocomposite of claim 14 , wherein crosslinker is zinc oxide, zirconium tert-butoxide, or a combination thereof.

16. The elastomer nanocomposite of claim 14 , wherein the hydrogenated nitrile butadiene rubber is crosslinked with the carboxylated hydrogenated nitrile butadiene rubber.

17. An elastomer nanocomposite comprising
an elastomer comprising a non-functionalized first elastomer and a functionalized second elastomer; and
a functionalized filler crosslinked with the elastomer;
wherein the non-functionalized first elastomer and the functionalized second elastomer are each independently an ethylene-propylene-diene monomer rubber; a nitrile butadiene rubber; a hydrogenated nitrile butadiene rubber; a butadiene rubber; a styrene-butadiene rubber; an acrylonitrile butadiene rubber; an acrylate-butadiene rubber; a natural rubber; a polyisoprene rubber; a polychloroprene rubber; an ethylene-vinyl acetate rubber; a polypropylene oxide rubber; a polypropylene sulfide rubber; a fluoroelastomer; a perfluoroelastomer; or a polyurethane rubber; or a functionalized derivative thereof, wherein the functionalized filler is an alkyl functionalized filler; and the alkyl functionalized filler is crosslinked with the elastomer using a peroxide, sulfur, or sulfur donor as a crosslinking agent.

18. The elastomer nanocomposite of claim 1 , further comprising about 10 parts by weight to about 60 parts by weight of a non-functionalized filler per 100 parts by weight of the elastomer.

19. An article comprising an elastomer nanocomposite of claim 14 .

20. The article of claim 19 , where the article comprises a seal, a compression packing element, an expandable packing element, an O-ring, a T-ring, a gasket, a bonded seal, a bullet seal, a sub-surface safety valve seal, a sub-surface safety valve flapper seal, a dynamic seal, a V-ring, a back up ring, a drill bit seal, an electric submersible pump seal, a blowout preventer seal, a plug, a bridge plug, a wiper plug, a frac plug, a component of frac plug, a wiper plug, a swabbing element protector, a buoyant recorder, a pumpable collet, a blow out preventer element, a submersible pump motor protector bag, a sensor protector, a sucker rod, a sucker rod seal, a pump shaft seal, a tube seal, a valve seal, a sampling pad seal, a seal for an electrical component, an insulator for an electrical component, or a seal for a drilling motor.

21. The article of claim 19 , wherein the article is a dynamic seal.

22. The article of claim 21 , wherein the dynamic seal provides a seal between two moving components or between a moving component

Assignees

• Dolog Rostyslav
• Ventura Darryl
• Khabashesku Valery N
• Baker Hughes A Ge Co Llc

Inventors

• Dolog Rostyslav
• Ventura Darryl
• Khabashesku Valery N

Classifications

• C08L15/005 Primary

  Hydrogenated nitrile rubber · CPC title

• C08K2003/2296

  of zinc · CPC title

• C08L9/00

  Compositions of homopolymers or copolymers of conjugated diene hydrocarbons · CPC title

• C08L9/06

  Copolymers with styrene · CPC title

• C08L2205/025

  containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure · CPC title