EP4112704A1 - Aqueous lubricating composition comprising mos2 nanosheet - Google Patents
Aqueous lubricating composition comprising mos2 nanosheet Download PDFInfo
- Publication number
- EP4112704A1 EP4112704A1 EP21305908.2A EP21305908A EP4112704A1 EP 4112704 A1 EP4112704 A1 EP 4112704A1 EP 21305908 A EP21305908 A EP 21305908A EP 4112704 A1 EP4112704 A1 EP 4112704A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- water
- lubricating composition
- composition according
- mos2
- anyone
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 239000000203 mixture Substances 0.000 title claims abstract description 92
- 230000001050 lubricating effect Effects 0.000 title claims abstract description 65
- 239000002135 nanosheet Substances 0.000 title claims abstract description 28
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerol Natural products OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims abstract description 46
- 229910052961 molybdenite Inorganic materials 0.000 claims abstract description 44
- 229910052982 molybdenum disulfide Inorganic materials 0.000 claims abstract description 44
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 40
- CWQXQMHSOZUFJS-UHFFFAOYSA-N molybdenum disulfide Chemical compound S=[Mo]=S CWQXQMHSOZUFJS-UHFFFAOYSA-N 0.000 claims abstract description 24
- 238000004299 exfoliation Methods 0.000 claims abstract description 15
- 239000007791 liquid phase Substances 0.000 claims abstract description 14
- 238000011065 in-situ storage Methods 0.000 claims abstract description 7
- 239000008213 purified water Substances 0.000 claims abstract description 6
- 229910021642 ultra pure water Inorganic materials 0.000 claims abstract description 6
- 239000012498 ultrapure water Substances 0.000 claims abstract description 6
- 239000008367 deionised water Substances 0.000 claims abstract description 5
- 229910021641 deionized water Inorganic materials 0.000 claims abstract description 5
- 230000003204 osmotic effect Effects 0.000 claims abstract description 5
- 230000005540 biological transmission Effects 0.000 claims description 15
- 239000002245 particle Substances 0.000 claims description 15
- 238000000034 method Methods 0.000 claims description 13
- 238000005119 centrifugation Methods 0.000 claims description 11
- 239000003638 chemical reducing agent Substances 0.000 claims description 6
- 238000005461 lubrication Methods 0.000 claims description 3
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- 239000000654 additive Substances 0.000 description 16
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- VPWFPZBFBFHIIL-UHFFFAOYSA-L disodium 4-[(4-methyl-2-sulfophenyl)diazenyl]-3-oxidonaphthalene-2-carboxylate Chemical compound [Na+].[Na+].[O-]S(=O)(=O)C1=CC(C)=CC=C1N=NC1=C(O)C(C([O-])=O)=CC2=CC=CC=C12 VPWFPZBFBFHIIL-UHFFFAOYSA-L 0.000 description 1
- NJDNXYGOVLYJHP-UHFFFAOYSA-L disodium;2-(3-oxido-6-oxoxanthen-9-yl)benzoate Chemical compound [Na+].[Na+].[O-]C(=O)C1=CC=CC=C1C1=C2C=CC(=O)C=C2OC2=CC([O-])=CC=C21 NJDNXYGOVLYJHP-UHFFFAOYSA-L 0.000 description 1
- 239000002270 dispersing agent Substances 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 125000003438 dodecyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 150000002169 ethanolamines Chemical class 0.000 description 1
- BEFDCLMNVWHSGT-UHFFFAOYSA-N ethenylcyclopentane Chemical compound C=CC1CCCC1 BEFDCLMNVWHSGT-UHFFFAOYSA-N 0.000 description 1
- 239000000194 fatty acid Substances 0.000 description 1
- 229930195729 fatty acid Natural products 0.000 description 1
- 150000004665 fatty acids Chemical class 0.000 description 1
- 150000002191 fatty alcohols Chemical class 0.000 description 1
- 150000002193 fatty amides Chemical class 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 230000000855 fungicidal effect Effects 0.000 description 1
- 239000008397 galvanized steel Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 150000004676 glycans Chemical class 0.000 description 1
- 150000002334 glycols Chemical class 0.000 description 1
- 125000003187 heptyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 230000002209 hydrophobic effect Effects 0.000 description 1
- 150000004679 hydroxides Chemical class 0.000 description 1
- 150000001261 hydroxy acids Chemical class 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 150000002484 inorganic compounds Chemical class 0.000 description 1
- 229910010272 inorganic material Inorganic materials 0.000 description 1
- JYJIGFIDKWBXDU-MNNPPOADSA-N inulin Chemical compound O[C@H]1[C@H](O)[C@@H](CO)O[C@@]1(CO)OC[C@]1(OC[C@]2(OC[C@]3(OC[C@]4(OC[C@]5(OC[C@]6(OC[C@]7(OC[C@]8(OC[C@]9(OC[C@]%10(OC[C@]%11(OC[C@]%12(OC[C@]%13(OC[C@]%14(OC[C@]%15(OC[C@]%16(OC[C@]%17(OC[C@]%18(OC[C@]%19(OC[C@]%20(OC[C@]%21(OC[C@]%22(OC[C@]%23(OC[C@]%24(OC[C@]%25(OC[C@]%26(OC[C@]%27(OC[C@]%28(OC[C@]%29(OC[C@]%30(OC[C@]%31(OC[C@]%32(OC[C@]%33(OC[C@]%34(OC[C@]%35(OC[C@]%36(O[C@@H]%37[C@@H]([C@@H](O)[C@H](O)[C@@H](CO)O%37)O)[C@H]([C@H](O)[C@@H](CO)O%36)O)[C@H]([C@H](O)[C@@H](CO)O%35)O)[C@H]([C@H](O)[C@@H](CO)O%34)O)[C@H]([C@H](O)[C@@H](CO)O%33)O)[C@H]([C@H](O)[C@@H](CO)O%32)O)[C@H]([C@H](O)[C@@H](CO)O%31)O)[C@H]([C@H](O)[C@@H](CO)O%30)O)[C@H]([C@H](O)[C@@H](CO)O%29)O)[C@H]([C@H](O)[C@@H](CO)O%28)O)[C@H]([C@H](O)[C@@H](CO)O%27)O)[C@H]([C@H](O)[C@@H](CO)O%26)O)[C@H]([C@H](O)[C@@H](CO)O%25)O)[C@H]([C@H](O)[C@@H](CO)O%24)O)[C@H]([C@H](O)[C@@H](CO)O%23)O)[C@H]([C@H](O)[C@@H](CO)O%22)O)[C@H]([C@H](O)[C@@H](CO)O%21)O)[C@H]([C@H](O)[C@@H](CO)O%20)O)[C@H]([C@H](O)[C@@H](CO)O%19)O)[C@H]([C@H](O)[C@@H](CO)O%18)O)[C@H]([C@H](O)[C@@H](CO)O%17)O)[C@H]([C@H](O)[C@@H](CO)O%16)O)[C@H]([C@H](O)[C@@H](CO)O%15)O)[C@H]([C@H](O)[C@@H](CO)O%14)O)[C@H]([C@H](O)[C@@H](CO)O%13)O)[C@H]([C@H](O)[C@@H](CO)O%12)O)[C@H]([C@H](O)[C@@H](CO)O%11)O)[C@H]([C@H](O)[C@@H](CO)O%10)O)[C@H]([C@H](O)[C@@H](CO)O9)O)[C@H]([C@H](O)[C@@H](CO)O8)O)[C@H]([C@H](O)[C@@H](CO)O7)O)[C@H]([C@H](O)[C@@H](CO)O6)O)[C@H]([C@H](O)[C@@H](CO)O5)O)[C@H]([C@H](O)[C@@H](CO)O4)O)[C@H]([C@H](O)[C@@H](CO)O3)O)[C@H]([C@H](O)[C@@H](CO)O2)O)[C@@H](O)[C@H](O)[C@@H](CO)O1 JYJIGFIDKWBXDU-MNNPPOADSA-N 0.000 description 1
- 229940029339 inulin Drugs 0.000 description 1
- 239000002608 ionic liquid Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- GVALZJMUIHGIMD-UHFFFAOYSA-H magnesium phosphate Chemical class [Mg+2].[Mg+2].[Mg+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O GVALZJMUIHGIMD-UHFFFAOYSA-H 0.000 description 1
- 239000004137 magnesium phosphate Substances 0.000 description 1
- 235000010994 magnesium phosphates Nutrition 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- VZCYOOQTPOCHFL-UPHRSURJSA-N maleic acid Chemical compound OC(=O)\C=C/C(O)=O VZCYOOQTPOCHFL-UPHRSURJSA-N 0.000 description 1
- 239000011976 maleic acid Substances 0.000 description 1
- 229910021645 metal ion Inorganic materials 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- CXKWCBBOMKCUKX-UHFFFAOYSA-M methylene blue Chemical compound [Cl-].C1=CC(N(C)C)=CC2=[S+]C3=CC(N(C)C)=CC=C3N=C21 CXKWCBBOMKCUKX-UHFFFAOYSA-M 0.000 description 1
- BEGLCMHJXHIJLR-UHFFFAOYSA-N methylisothiazolinone Chemical compound CN1SC=CC1=O BEGLCMHJXHIJLR-UHFFFAOYSA-N 0.000 description 1
- 229960000907 methylthioninium chloride Drugs 0.000 description 1
- 238000000386 microscopy Methods 0.000 description 1
- 239000002480 mineral oil Substances 0.000 description 1
- 235000010446 mineral oil Nutrition 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 150000002826 nitrites Chemical class 0.000 description 1
- 125000001400 nonyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 238000000399 optical microscopy Methods 0.000 description 1
- 150000007524 organic acids Chemical class 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- 239000013618 particulate matter Substances 0.000 description 1
- 239000012071 phase Substances 0.000 description 1
- 150000002989 phenols Chemical class 0.000 description 1
- GVKCHTBDSMQENH-UHFFFAOYSA-L phloxine B Chemical compound [Na+].[Na+].[O-]C(=O)C1=C(Cl)C(Cl)=C(Cl)C(Cl)=C1C1=C2C=C(Br)C(=O)C(Br)=C2OC2=C(Br)C([O-])=C(Br)C=C21 GVKCHTBDSMQENH-UHFFFAOYSA-L 0.000 description 1
- 235000021317 phosphate Nutrition 0.000 description 1
- 150000003009 phosphonic acids Chemical class 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 229920006112 polar polymer Polymers 0.000 description 1
- 108010064470 polyaspartate Proteins 0.000 description 1
- 229920005862 polyol Polymers 0.000 description 1
- 150000003077 polyols Chemical class 0.000 description 1
- 229920001282 polysaccharide Polymers 0.000 description 1
- 239000005017 polysaccharide Substances 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 229920001021 polysulfide Polymers 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- LWIHDJKSTIGBAC-UHFFFAOYSA-K potassium phosphate Substances [K+].[K+].[K+].[O-]P([O-])([O-])=O LWIHDJKSTIGBAC-UHFFFAOYSA-K 0.000 description 1
- 235000011009 potassium phosphates Nutrition 0.000 description 1
- 230000035755 proliferation Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 150000003856 quaternary ammonium compounds Chemical class 0.000 description 1
- 125000001453 quaternary ammonium group Chemical class 0.000 description 1
- 229920005604 random copolymer Polymers 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 235000019192 riboflavin Nutrition 0.000 description 1
- 239000002151 riboflavin Substances 0.000 description 1
- 229960002477 riboflavin Drugs 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 150000004760 silicates Chemical class 0.000 description 1
- 239000000344 soap Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000001488 sodium phosphate Substances 0.000 description 1
- 235000011008 sodium phosphates Nutrition 0.000 description 1
- 238000007614 solvation Methods 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000004334 sorbic acid Substances 0.000 description 1
- 235000010199 sorbic acid Nutrition 0.000 description 1
- 229940075582 sorbic acid Drugs 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 125000001273 sulfonato group Chemical group [O-]S(*)(=O)=O 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 229940042055 systemic antimycotics triazole derivative Drugs 0.000 description 1
- AGGKEGLBGGJEBZ-UHFFFAOYSA-N tetramethylenedisulfotetramine Chemical compound C1N(S2(=O)=O)CN3S(=O)(=O)N1CN2C3 AGGKEGLBGGJEBZ-UHFFFAOYSA-N 0.000 description 1
- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Natural products OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 238000004627 transmission electron microscopy Methods 0.000 description 1
- 150000003852 triazoles Chemical group 0.000 description 1
- 229960001124 trientine Drugs 0.000 description 1
- UJMBCXLDXJUMFB-UHFFFAOYSA-K trisodium;5-oxo-1-(4-sulfonatophenyl)-4-[(4-sulfonatophenyl)diazenyl]-4h-pyrazole-3-carboxylate Chemical compound [Na+].[Na+].[Na+].[O-]C(=O)C1=NN(C=2C=CC(=CC=2)S([O-])(=O)=O)C(=O)C1N=NC1=CC=C(S([O-])(=O)=O)C=C1 UJMBCXLDXJUMFB-UHFFFAOYSA-K 0.000 description 1
- 125000002948 undecyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- NWONKYPBYAMBJT-UHFFFAOYSA-L zinc sulfate Chemical class [Zn+2].[O-]S([O-])(=O)=O NWONKYPBYAMBJT-UHFFFAOYSA-L 0.000 description 1
- 235000009529 zinc sulphate Nutrition 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M125/00—Lubricating compositions characterised by the additive being an inorganic material
- C10M125/22—Compounds containing sulfur, selenium or tellurium
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M129/00—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing oxygen
- C10M129/02—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing oxygen having a carbon chain of less than 30 atoms
- C10M129/04—Hydroxy compounds
- C10M129/10—Hydroxy compounds having hydroxy groups bound to a carbon atom of a six-membered aromatic ring
- C10M129/14—Hydroxy compounds having hydroxy groups bound to a carbon atom of a six-membered aromatic ring containing at least 2 hydroxy groups
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M171/00—Lubricating compositions characterised by purely physical criteria, e.g. containing as base-material, thickener or additive, ingredients which are characterised exclusively by their numerically specified physical properties, i.e. containing ingredients which are physically well-defined but for which the chemical nature is either unspecified or only very vaguely indicated
- C10M171/06—Particles of special shape or size
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M173/00—Lubricating compositions containing more than 10% water
- C10M173/02—Lubricating compositions containing more than 10% water not containing mineral or fatty oils
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2201/00—Inorganic compounds or elements as ingredients in lubricant compositions
- C10M2201/02—Water
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2201/00—Inorganic compounds or elements as ingredients in lubricant compositions
- C10M2201/06—Metal compounds
- C10M2201/065—Sulfides; Selenides; Tellurides
- C10M2201/066—Molybdenum sulfide
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
- C10M2207/02—Hydroxy compounds
- C10M2207/021—Hydroxy compounds having hydroxy groups bound to acyclic or cycloaliphatic carbon atoms
- C10M2207/022—Hydroxy compounds having hydroxy groups bound to acyclic or cycloaliphatic carbon atoms containing at least two hydroxy groups
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2010/00—Metal present as such or in compounds
- C10N2010/12—Groups 6 or 16
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2020/00—Specified physical or chemical properties or characteristics, i.e. function, of component of lubricating compositions
- C10N2020/01—Physico-chemical properties
- C10N2020/055—Particles related characteristics
- C10N2020/06—Particles of special shape or size
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
- C10N2030/06—Oiliness; Film-strength; Anti-wear; Resistance to extreme pressure
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2040/00—Specified use or application for which the lubricating composition is intended
- C10N2040/04—Oil-bath; Gear-boxes; Automatic transmissions; Traction drives
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2040/00—Specified use or application for which the lubricating composition is intended
- C10N2040/04—Oil-bath; Gear-boxes; Automatic transmissions; Traction drives
- C10N2040/044—Oil-bath; Gear-boxes; Automatic transmissions; Traction drives for manual transmissions
Definitions
- the present invention relates to lubricant compositions in particular for gear, bearing and transmission, in particular automotive gears and transmissions, for example for electric vehicle reducers and industrial gears and bearing, more particularly for manual gearboxes.
- Gears, especially industrial gears face extreme operating conditions that can lead to damage, for example, wear to the internal components of the gears. This damage reduces the life of the gears, for example industrial gears, and can lead to costly and prolonged maintenance, repair costs, unscheduled downtime for the equipment that contains the gears.
- Lubricants are used in industrial gears to solve a part of that issues and also in drive elements, such as automotive gears and transmissions, roller bearings, and plain bearings or seals on rotating shafts.
- Lubricants are classically based on mineral oil or synthetic hydrocarbons, but also could be based on an aqueous basis.
- the lubricants cause a separating, load-transferring lubricating film to be built up between the parts that slide or roll on one another. It is thus achieved that the metal surfaces do not touch, and thus, also reduced friction occurs.
- the present invention relates to a lubricating composition
- a lubricating composition comprising:
- h-MoS 2 the “h” refers to the hexagonal phase of MoS 2 .
- the crystal structure of MoS2 is hexagonal.
- the UV-visible absorption spectra of the resulting h-MoS 2 (h is for hexagonal) nanosheet aqueous dispersion displayed the characteristic bands A and B at 660 and 603 nm respectively corresponding to the excitonic transitions of hexagonal MoS 2 nanosheets. Absorbance at these characteristic wavelengths was used to estimate the concentration of MoS 2 nanosheets.
- the nanosheets of h-MoS 2 dispersed in the water has an average particle hydrodynamic size comprised between 25 and 65 nm, preferably between 30 and 60 nm, more preferably around 45 ⁇ 5 nm .
- the average particle size of the nanosheets is measured by all techniques known by the skilled person, preferably by Transmission Electron Microscopy (TEM) for lateral size, Atomic Force Microscopy (AFM) for thickness or Dynamic Light Scattering (DLS) for hydrodynamic size.
- TEM Transmission Electron Microscopy
- AFM Atomic Force Microscopy
- DLS Dynamic Light Scattering
- the hydrodynamic size is the size of the dispersed particle with the solvation layer, it depends on the solvent (dielectric constant) and may be larger than the size of dry particle measured by microscopy.
- the glycerol acts as a stabilizer of the h-MoS 2 nanosheet.
- the glycerol is an organic molecule comprising three free hydroxyl groups, of following formula:
- the lubricating composition of the invention comprises at least 20 wt% of glycerol, preferably from 20 to 75 wt%, more preferably from 30 to 50 wt%, based on the total weight of the lubricating composition.
- the water implemented in the invention is preferably purified water.
- Purified water can be chosen among ultrapure water, demineralized water, osmotic water, deionized water.
- the amount of water in the lubricating composition is greater than 35 wt%, preferably comprised between 35 and 80 wt%, preferably from 35 to 75 wt%, based on the total weight of the lubricating.
- the water that has been purified to uncommonly stringent specifications.
- ultrapure water the water is treated to the highest levels of purity for all contaminant types, including: organic and inorganic compounds; dissolved and particulate matter; volatile and non-volatile; reactive, and inert; hydrophilic and hydrophobic; and dissolved gases.
- the in-situ process enables to obtain h-MoS 2 nanosheets directly dispersed in the aqueous solution and stabilized with glycerol.
- the liquid phase exfoliation can be carried out by any method known by the skilled person, it is preferably carried out using a high-power tip sonicator or high-shear rotors.
- the liquid phase exfoliation is carried out in reduced time, preferably from 4 to 8 hours.
- the liquid -phase exfoliation is preferably followed by a centrifugation step that can be carried by any means known by the skilled person, it is preferably carried out by a centrifuge allowing for high rotation speeds for instance, a Thermo Scientific Sorvall Legend XT.
- the centrifugation is carried out during 1 to 4 hours from 1000 to 10000 rpm.
- the bulk MoS 2 is not functionalized.
- the bulk raw material is micron-sized (1-10 ⁇ m) MoS 2 powder (> 98.5% purity) from Acros Organics ( CAS number: 1317-33-5 )
- the in-situ preparation of the h-MoS 2 nanosheet enables a single step preparation (there is no need of drying and isolating steps of h-MoS 2 nanosheets otherwise produced in a pre-exfoliating liquid media).
- the in-situ process requires a lower concentration of h-MoS 2 nanosheets (compared to process of the literature) to obtain improved properties, improved stability and reduction of wear and friction.
- the lubricating composition according to the invention can also comprise polyalkylene glycol.
- the polyalkylene glycols (denoted “PAG”) are chosen from water-soluble polyalkylene glycols.
- the term "water-soluble” is intended to denote a polyalkylene glycol having a solubility in water of at least 10 g / L, preferably of at least 500 g / L, in water at ambient temperature (approximately 25 °C).
- the polyalkylene glycols can more particularly be formed of C1-C4, preferably C1-C3, more particularly C2-C3 alkylene oxide units.
- a polyalkylene glycol used in an aqueous lubricating composition according to the invention comprises at least 50% by weight, in particular at least 80% by weight, more preferably at least 90% by weight of propylene oxide and / or ethylene oxide units. It may be an ethylene oxide / propylene oxide random copolymer.
- a polyalkylene glycol used in an aqueous lubricating composition according to the invention has a kinematic viscosity measured at 100 ° C (KV100), according to the ASTM D445 standard, between 100 and 5000 mm 2 /s, in particular between 150 and 3000 mm 2 /s.
- a polyalkylene glycol used in an aqueous lubricating composition according to the invention has a kinematic viscosity measured at 40 ° C (KV40), according to the ASTM D445 standard, between 500 and 30,000 mm 2 /s, more particularly between 1,000 and 25,000 mm 2 /s.
- the flash point of a polyalkylene glycol used in an aqueous lubricating composition according to the invention is preferably greater than or equal to 160 °C, in particular greater than or equal to 220 ° C.
- the flash point can be measured by ISO 2592 or ASTM D92.
- a polyalkylene glycol used in an aqueous lubricating composition according to the invention has a viscosity index measured according to the ASTM D2270 standard, of between 100 and 800, preferably between 250 and 550.
- the lubricating composition according to the invention can also comprise various additives that are compatible with the aqueous solution.
- the additives are used in a form soluble or emulsifiable in water, for example in the form of salts or ionic liquids.
- Said additive(s) are of course chosen with regard to the intended application for the aqueous lubricant.
- a person skilled in the art will take care to choose the optional additives and / or their quantity in such a way that the advantageous properties of the aqueous lubricating composition according to the invention, in particular the tribological properties, in particular of reduction of friction and protection of parts against wear, are not altered by the additives envisaged.
- Such additives can be more particularly chosen from anti-foam agents, biocides, pH regulators, corrosion inhibitors, anti-wear and / or extreme pressure additives, sequestering agents, metal passivators, colorants, dispersants, emulsifying agents, and mixtures thereof.
- a lubricating composition according to the invention can comprise one or more additives chosen from anti-foam agents, extreme pressure agents, corrosion inhibitors, pH regulators, metal passivators, colorants, and their mixtures.
- a lubricating composition according to the invention may more particularly comprise from 0.1 to 10% by mass of additives, in particular from 1.0 to 8.0% by mass of additives, relative to the total mass of the composition.
- An aqueous lubricating composition according to the invention can comprise at least one corrosion inhibitor agent.
- Corrosion inhibitors advantageously make it possible to reduce or even prevent the corrosion of metal parts.
- the nature of said corrosion inhibitor(s) can be chosen with regard to the metal to be protected against corrosion, such as aluminum, steel, galvanized steel, yellow metals, for example copper or brass.
- the inorganic corrosion inhibitors may be mentioned nitrites, sulphites, silicates, borates, sodium, potassium, calcium or magnesium phosphates, alkali metal phosphates, hydroxides, molybdates, zinc sulphates, magnesium or nickel.
- alkanolamines such as triethanolamine
- aliphatic monocarboxylic acids in particular having 4 to 15 carbon atoms, for example octanoic acid
- aliphatic dicarboxylic acids having 4 to 15 carbon atoms, for example decane dioic acid, undecane dioic acid, dodecane dioic acid or their mixtures
- polycarboxylic acids optionally neutralized with triethanolamine, such as 1,3,5-triazine-2,4,6-tri-(6-aminocaproic) acid
- alkanoylamidocarboxylic acids in particular isononanoylamidocaproic acid, and mixtures thereof.
- Borated amides products of the reaction of amines or amino alcohols with boric acid, can also be used.
- An aqueous lubricating composition according to the invention may in particular comprise from 0.1% to 5.0% by weight of corrosion inhibitor (s), preferably from 0.5% to 4.0% by weight, more preferably from 1.0% to 2.5% by mass, relative to the total mass of the composition.
- a lubricating composition according to the invention may comprise at least one anti-wear and / or extreme pressure additive. Their function is to reduce wear and the coefficient of friction, or to prevent metal-to-metal contact by forming a protective film adsorbed on these surfaces.
- anti-wear additives among which may be mentioned those chosen from phosphosulfur additives such as metal alkylthiophosphates or their salts. Amine phosphates are also antiwear additives which can be used in a composition according to the invention.
- Additives which do not provide phosphorus may also be suitable, such as, for example, polysulphides, in particular sulfur-containing olefins.
- extreme pressure additives suitable for the present invention mention may be made of water-soluble extreme pressure additives, such as 2,5-dimercapto-1,3,4-thiadiazole (DMTD) or one of its salts, in in particular a disodium salt (NaDMTD).
- DMTD 2,5-dimercapto-1,3,4-thiadiazole
- NaDMTD disodium salt
- An aqueous lubricating composition according to the invention may comprise between 0.01% and 10% by mass of anti-wear and / or extreme pressure additive(s) as defined above, preferably between 0.5% and 5.0% by mass, relative to the total mass of the composition.
- An aqueous lubricating composition according to the invention may comprise at least one anti-foam additive.
- Antifoams help prevent foaming of the lubricating fluid. It may, for example, be an anti-foaming agent based on polysiloxanes or on acrylate polymers. Preferably, the anti-foaming agent is chosen from three-dimensional siloxanes.
- the anti-foaming agents can also be polar polymers such as polymethylsiloxanes or polyacrylates.
- a lubricating composition according to the invention can comprise from 0.001% to 3.0% by weight of anti-foaming additive (s), preferably from 0.005% to 1.5% by weight, more preferably from 0.01 % to 1.0% by weight, relative to the total weight of the lubricating composition.
- anti-foaming additive s
- a lubricating composition according to the invention can comprise at least one pH regulating additive, in particular an alkaline buffer.
- the pH regulator makes it possible to maintain the desired pH of the lubricating composition, in particular in order to preserve an alkaline pH, advantageously between 8 and 11, in particular to prevent corrosion of the metal surfaces.
- the pH regulator can be chosen from amines, in particular alkanolamines and amino alcohols.
- a pH regulating additive chosen from ethanolamines, such as monoethanolamine (MEA), diethanolamine (DEA); triethanolamine (TEA), diglycolamine (DGA) isopropanolamines, such as mono-isopropanolamine (MIPA), diisopropanolamine (DIPA) and triisopropanolamine (TIPA), ethylene amines, such as ethylene diamine (EDA), diethylene triamine (DETA), triethylene tetramine (TETA) and tetraethylene pentamine (TEPA), alkanolamines, such as methyldiethanol amine (MDEA), cyclamines, such as cyclohexylamine, 2-amino-2-ethyl-1,3-propanediol, 2-amino-2-methyl-1-propanol and mixtures thereof.
- An aqueous lubricating composition according to the invention can in particular comprise from 0.1% to 10% by mass of additive (s) regulating the pH
- a lubricating composition according to the invention can comprise at least one metal passivating agent.
- Metal passivators protect metal parts by promoting the formation of metal oxide on their surface.
- the metal passivating agents can for example be chosen from triazole derivatives, such as tetrahydrobenzotriazole (THBTZ), tolyltryazole (TTZ), benzotriazole (BTZ), amines substituted with a triazole group, such as N,N-bis(2-ethylhexyl)-1,2,4-triazol-1-yl methanamine, N'-bis(2 ethylhexyl)-4-methyl-1H-benzotriazol-1-methyl-amine, N,N-bis (heptyl)-ar-methyl-1H-benzotriazole-1-methanamine, N,N-bis(nonyl)-ar-methyl-1H-benzotriazole-1-methanamine, N,N-bis(decyl)-ar-methyl-1H
- the metal passivating agents are chosen from tetrahydrobenzotriazole (THBTZ), tolyltriazole (TTZ), benzotriazole (BTZ), and their salts, alone or as mixtures.
- a lubricating composition according to the invention may in particular comprise from 0.01% to 2.0% by weight of metal passivating agent (s), preferably from 0.1% to 1.0% by weight, relative to the total mass of the composition
- a lubricating composition according to the invention may comprise one or more dyes.
- the dyes can be natural or synthetic, generally organic.
- the dyes which can be used in an aqueous lubricating composition can be more particularly chosen from natural or synthetic water-soluble dyes, for example the dyes FDC Red 4, DC Red 6, DC Red 22, DC Red 28, DC Red 30, DC Red 33, DC Orange 4, DC Yellow 5, DC Yellow 6, DC Yellow 8, FDC Green 3, DC Green 5, FDC Blue 1, betanin (beet), carmine, a chlorophyllin, methylene blue, anthocyanins (enocianin, black carrot and hibiscus), caramel and riboflavin.
- An aqueous lubricating composition according to the invention may comprise between 0.01% and 2.0% by weight of dye(s), preferably between 0.01% and 1.5% by weight, more preferably between 0.02% and 1.0% by weight, relative to the total weight of the composition.
- a lubricating composition according to the invention can comprise one or more emulsifying agents, also called emulsifiers. Their function is to generate stable emulsions in water.
- the emulsifying agents can be more particularly nonionic, such as, for example, ethoxylated fatty alcohols, ethoxylated fatty acids, ethoxylated fatty amides; anionic, for example soaps of KOH, NaOH; sulphonates; cationic, such as quaternary ammonium compounds; or else water-soluble or emulsifiable carboxylic acid esters.
- an aqueous lubricating composition according to the invention can comprise from 0.01% to 10% by weight of emulsifying agent(s), preferably from 0.1% to 5.0% by weight, relative to the total weight of the lubricating composition.
- a lubricating composition according to the invention can comprise at least one sequestering agent.
- Sequestering agents also called chelating agents, make it possible to limit the encrustation of metal ions in the composition.
- sequestering agents there may be mentioned those derived from phosphonic acids and phosphonates, such as diethylenetriaminepentamethyl phosphonic acid (DTPMPA), amino tri(methylene phosphonic acid) (ATMP), acid hydroxyethane-diphosphonic acid (HEDP), 1-hydroxylethylidene 1,1-diphosphonate, 2-hydroxyethylamine di (methylene phosphonic) acid (HEAMBP), diethylene triamino penta (methylene phosphonic) acid (DTMP), acids multifunctional organic and hydroxy acids, such as ethylenediaminetetraacetic acid (EDTA), pteroyl-L-glutamic acid (PGLU), organic polyacids, such as maleic acid and polyaspartic acid, polysaccharides and carbohydrates
- a lubricating composition according to the invention can comprise at least one biocidal and / or fungicidal agent.
- Biocides and fungicides can be used to improve the biological stability of the composition by limiting the proliferation of bacteria, fungi and yeasts in the lubricating fluid.
- Such biocides can be chosen from parabens, aldehydes, reactive acetylacetone compounds, isothiazolinones, phenolic compounds, acid salts, halogenated compounds, quaternary ammoniums, certain alcohols and their mixtures.
- the biocides can be chosen from optionally substituted benzisothiazolinones (BIT), such as N-butyl-1,2-benzisothiazolin-3-one, methylisothiazolinones (MIT), mixtures of methylisothiazolinone and chloromethylisothiazolinone (MIT / CMIT), orthophenyl-phenol (OPP) or its sodium salt, 3-iodo-2-propynylbutylcarbamate (IPBC), chloro-cresol and N, N-methylene-bis-morpholine (MBM); sorbic acid; preferably from orthophenyl-phenol (OPP) or its sodium salt, 3-iodo-2-propynylbutylcarbamate, chloro-cresol, benzisothiazolinones and N, N-methylene-isomorpholine.
- An aqueous lubricating composition according to the invention can in particular comprise between 0.01% and 10% by weight of biocide (
- the lubricating composition according to the invention comprises less than 5 wt% of non-water soluble oil, preferably less than 2 wt%, more preferably less than 1 wt%, based on the total weight of the lubricating composition.
- the lubricating composition of the invention does not comprise non-water soluble oil.
- Non-water soluble oil is oil that is not substantially solubilized in water at room temperature (around 25°C).
- non-water soluble oil has a solubility in water less than 0.2 g/l at room temperature (around 25°C).
- Such oil is for example lubricating base oil from groups I to V of the API classification (or equivalent in ATIEL classification) and their mixtures.
- the present invention also relates to a process for preparing the lubricating composition according to the invention comprising the following steps:
- the present invention also relates to a process for creating h-MoS 2 nanosheets in an aqueous solution comprising the following steps:
- the water, the glycerol and the h-MoS 2 nanosheets are as decribed above.
- the in-situ process enables to obtain h-MoS 2 nanosheets directly dispersed in the aqueous solution and stabilized with glycerol.
- the liquid phase exfoliation can be carried out by any method known by the skilled person, it is preferably carried out using a high-power tip sonicator or a high-shear rotor. Preferably, the liquid phase exfoliation is carried out in reduced time, preferably from 4 to 8 hours.
- the centrifugation step can be carried by any means known by the skilled person, it is preferably carried out by a centrifuge allowing for high rotation speeds for instance, a Thermo Scientific Sorvall Legend XT. Preferably, the centrifugation is carried out during 1 to 4 hours at 1000 to 10000 rpm .
- the present invention also relates to the use of the lubricating composition according to the invention for the lubrication of mechanical parts of a mechanic system, preferably of gear, bearing and transmission, in particular automotive gears and transmissions, for example electric vehicle reducers and industrial gears and bearing, particularly of manual gearboxes.
- a mechanic system preferably of gear, bearing and transmission
- automotive gears and transmissions for example electric vehicle reducers and industrial gears and bearing, particularly of manual gearboxes.
- the use of the composition according to the present invention enables to reduce wear and friction.
- the present invention also relates to a process for lubricating mechanical parts of a mechanic system, preferably of gear, bearing and transmission, in particular automotive gears and transmissions, for example electric vehicle reducers and industrial gears and bearing, particularly of manual gearboxes, comprising putting the mechanical parts of the mechanic system, preferably of automobile transmissions, particularly of manual gearboxes, in contact with the lubricating composition according to the invention.
- the present invention also relates to a process for reducing wear and friction on mechanical parts of a mechanic system, preferably gear, bearing and transmission, in particular automotive gears and transmissions, for example electric vehicle reducers and industrial gears and bearing, particularly of manual gearboxes, comprising putting the mechanical parts of the mechanic system, preferably of automobile transmissions, particularly of manual gearboxes, in contact with the lubricating composition according to the invention.
- the surface of steel 100Cr6 disks and balls after the pin-on-disk tribology measurements was examined by optical microscopy (Leica DM4000M) and confocal microscopy (Leica DCM3D) to evaluate wear of both contacting surfaces lubricated by the different formulations.
- the ball wear volume loss was estimated from the radius of the wear trace using the equation to calculate the volume of a spherical cap.
- Stability refers to the time without observing sedimentation and preserving tribological performance.
- Aqueous solution of MoS 2 nanosheet were produced by liquid-phase exfoliation of bulk micron-sized MoS 2 powder (4 mg/ml) (99%, Acros Organics) in certain volume of aqueous solution of glycerol using a high-power tip sonicator (Dr. Hielscher UP 400S at the highest amplitude and frequency) for times ranging from 4 to 8 hours. Volumes used varied from 30 to 100 mL. After removing unexfoliated MoS 2 as sediment by centrifugation (Thermo Scientific Sorvall Legend XT, from 1 to 4 hours, at 3500 rpm), nanosized MoS 2 nanosheet are obtained directly dispersed in the aqueous lubricants as a result of the exfoliation process. The final concentration of MoS 2 nanosheets can be tuned by varying the sonication time and centrifugation speed and time in a way that the highest concentrations correspond to large sonication times and low centrifugation speed and time.
- the tribological measurements mentioned above are carried out using 1mL out of a 65 mL sample.
- the pin-on-disk tests were carried out on 66HRC 100CR6 steel disks under the following conditions: 60°C temperature, 10N load, 1 cm/s sliding speed and 72 m distance.
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Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
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EP21305908.2A EP4112704A1 (en) | 2021-07-01 | 2021-07-01 | Aqueous lubricating composition comprising mos2 nanosheet |
PCT/EP2022/068157 WO2023275296A1 (en) | 2021-07-01 | 2022-06-30 | Aqueous lubricating composition comprising mos2 nanosheet |
CN202280046017.3A CN117580932A (zh) | 2021-07-01 | 2022-06-30 | 包含MoS2纳米片的水性润滑剂组合物 |
EP22741245.9A EP4363535A1 (en) | 2021-07-01 | 2022-06-30 | Aqueous lubricating composition comprising mos2nanosheet |
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EP21305908.2A EP4112704A1 (en) | 2021-07-01 | 2021-07-01 | Aqueous lubricating composition comprising mos2 nanosheet |
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EP4112704A1 true EP4112704A1 (en) | 2023-01-04 |
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EP21305908.2A Withdrawn EP4112704A1 (en) | 2021-07-01 | 2021-07-01 | Aqueous lubricating composition comprising mos2 nanosheet |
EP22741245.9A Pending EP4363535A1 (en) | 2021-07-01 | 2022-06-30 | Aqueous lubricating composition comprising mos2nanosheet |
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EP22741245.9A Pending EP4363535A1 (en) | 2021-07-01 | 2022-06-30 | Aqueous lubricating composition comprising mos2nanosheet |
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US20120149616A1 (en) * | 2009-09-01 | 2012-06-14 | Klueber Lubrication Muenchen Kg | Water-based lubricants |
CN106520354A (zh) * | 2016-10-21 | 2017-03-22 | 青岛大学 | 一种基于二维材料纳米片/碳量子点的水基润滑液及其制备方法 |
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CN104560347A (zh) * | 2014-12-29 | 2015-04-29 | 北京航空航天大学 | 一种原位制备二硫化钼纳米片水基润滑剂的方法 |
-
2021
- 2021-07-01 EP EP21305908.2A patent/EP4112704A1/en not_active Withdrawn
-
2022
- 2022-06-30 CN CN202280046017.3A patent/CN117580932A/zh active Pending
- 2022-06-30 WO PCT/EP2022/068157 patent/WO2023275296A1/en active Application Filing
- 2022-06-30 EP EP22741245.9A patent/EP4363535A1/en active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
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US20120149616A1 (en) * | 2009-09-01 | 2012-06-14 | Klueber Lubrication Muenchen Kg | Water-based lubricants |
CN106520354A (zh) * | 2016-10-21 | 2017-03-22 | 青岛大学 | 一种基于二维材料纳米片/碳量子点的水基润滑液及其制备方法 |
Non-Patent Citations (2)
Title |
---|
WANG YONGXIA ET AL: "Friction reduction of water based lubricant with highly dispersed functional MoS2nanosheets", COLLOIDS AND SURFACES A: PHYSIOCHEMICAL AND ENGINEERING ASPECTS, vol. 562, 22 November 2018 (2018-11-22), pages 321 - 328, XP085566909, ISSN: 0927-7757, DOI: 10.1016/J.COLSURFA.2018.11.047 * |
YIJUN SHI ET AL: "Boundary and elastohydrodynamic lubrication studies of glycerol aqueous solutions as green lubricants", TRIBOLOGY INTERNATIONAL, vol. 69, 4 September 2013 (2013-09-04), AMSTERDAM, NL, pages 39 - 45, XP055445221, ISSN: 0301-679X, DOI: 10.1016/j.triboint.2013.08.013 * |
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CN117580932A (zh) | 2024-02-20 |
WO2023275296A1 (en) | 2023-01-05 |
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