润滑科技信息平台

机械工程学会摩擦学分会固体润滑国家重点实验室摩擦学学报

石墨烯基润滑油添加剂和润滑油

专利摘要

提供了一种石墨烯基润滑剂,其包含石墨烯基添加剂。石墨烯基添加剂与其他任选的添加剂一起分散在基液中。还提供了一种润滑方法,其包括将该组合物施加至两个配合表面以在两个配合表面之间形成保护涂层。 ......

基本信息

专利类型:
发明专利
申请/专利号:
US17/799399
申请日期:
2021-02-22
专利申请人:
纳米探索股份有限公司
分类号:
["C10M169/04","C10M107/02","C10M125/02","C10M173/00","C10N20/06","C10N30/04"]
发明/设计人:
JAMES, ALLAN ， FUKUSHIMA, HIROYUKI ， WANG, LIYA
权利要求: 1. A graphene-based lubricant comprising:a graphene-based additive;a base liquid in which the graphene-based additive is dispersed;and other additives dispersed in the base liquid.2. The graphene-based lubricant of claim 1 wherein the graphene-based additive is one or more of single-layer graphene, double-layer graphene, few-layer graphene (FLG), graphene nanoplatelets (GNP), graphene oxide (GO), reduced graphene oxide (rGO), functionalized graphene, doped graphene, and a combination thereof.3. The graphene-based lubricant of claim 1 wherein the graphene-based additive is made by mechanical exfoliation of graphite.4. The graphene-based lubricant of claim 1 wherein the graphene-based additive has a surface area in the range of 300-800 m2/g.5. The graphene-based lubricant of claim 1 wherein the graphene-based additive has an average particle size of <5 microns.6. The graphene-based lubricant of claim 1 wherein the graphene-based additive has an oxygen content in the range of 2-20 wt %.7. The graphene-based lubricant of claim 1 wherein the graphene-based additive is made by chemical exfoliation of graphite.8. The graphene-based lubricant of claim 7 wherein the graphene-based additive has a surface area in the range of 20-300 m2/g.9. The graphene-based lubricant of claim 7 wherein the graphene-based additive has a particle size in the range of 0.1-50 microns.10. The graphene-based lubricant of claim 7 wherein the base liquid is an oil based solvent or mixture or an aqueous based solvent.11. The graphene-based lubricant of claim 1 wherein the graphene-based additive content is in the range of 0.1-2 wt %.12. The graphene-based lubricant of claim 10 wherein the oil-based solvent or mixture is made from hydrocracking of crude oil with less than 90% saturates, more than 0.03% sulfur and has a viscosity index range of 80 to 120 and an operating temperature range of from 32 to 150 F.13. The graphene-based lubricant of claim 10 wherein the oil-based solvent is one or more of synthetic polyalphaolefins (PAOs).14. The graphene-based lubricant of claim 13 wherein the dispersant by at least one of: sulfonates, sulfates, phosphonates, phosphates, fatty acids, naphthenic acids, fatty amides, organic alcohols, succinimides, succinate esters, polysaccharides, maleic anhydride, maleic anhydride grafted polyolefins, polyols, polyethylene glycols (PEG), PEG based copolymers, polyacrylic acids (PAA), polyvinyl chloride (PVC), phenoxy ethers, styrene acrylics, or a mixture of any of the above,wherein the amount of dispersant in the final lubricant formulation is in the range of 1 to 20 wt %.15. The graphene-based lubricant of claim 1 wherein the graphene-based additive is functionalized by at least one of: silanes, alkoxysilanes, organic amines, polyols, epoxies, organic acids, or plasma treatment.16. The graphene-based lubricant of claim 10 wherein the oil-based solvent is one or more of silicone, phosphate ester, polyalkylene glycol (PAG), polyolester, and biolubes with or without a dispersant.17. The graphene-based lubricant of claim 16 wherein a dispersant by at least one of: sulfonates, sulfates, phosphonates, phosphates, fatty acids, naphthenic acids, fatty amides, organic alcohols, succinimides, succinate esters, polysaccharides, maleic anhydride, maleic anhydride grafted polyolefins, polyols, polyethylene glycols (PEG), PEG based copolymers, polyacrylic acids (PAA), polyvinyl chloride (PVC), phenoxy ethers, styrene acrylics, or a mixture of any of the above,wherein the amount of dispersant in the final lubricant formulation is in the range of 1 to 20 wt %.18. The graphene-based lubricant of claim 16 wherein the graphene-based additive is functionalized by at least one of: silanes, alkoxysilanes, organic amines, polyols, epoxies, organic acids, or plasma treatment.19. The graphene-based lubricant of claim 1 wherein the base liquid is an aqueous solvent.20-25. (canceled)26. A method of lubrication comprising:applying a composition according to claim 1 to two mating surfaces to form a protective coating between the two mating surfaces.