CN115353925A - Composite lithium-based grease and preparation method thereof - Google Patents
Composite lithium-based grease and preparation method thereof Download PDFInfo
- Publication number
- CN115353925A CN115353925A CN202210940998.8A CN202210940998A CN115353925A CN 115353925 A CN115353925 A CN 115353925A CN 202210940998 A CN202210940998 A CN 202210940998A CN 115353925 A CN115353925 A CN 115353925A
- Authority
- CN
- China
- Prior art keywords
- lithium
- sulfonate
- grease
- additive
- petroleum
- 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.)
- Pending
Links
- 239000004519 grease Substances 0.000 title claims abstract description 105
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 97
- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 97
- 239000002131 composite material Substances 0.000 title claims abstract description 51
- 238000002360 preparation method Methods 0.000 title claims abstract description 11
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 claims abstract description 89
- 239000003208 petroleum Substances 0.000 claims abstract description 65
- -1 alkylbenzene sulfonate Chemical class 0.000 claims abstract description 48
- 239000000654 additive Substances 0.000 claims abstract description 37
- 230000000996 additive effect Effects 0.000 claims abstract description 34
- PQVSTLUFSYVLTO-UHFFFAOYSA-N ethyl n-ethoxycarbonylcarbamate Chemical compound CCOC(=O)NC(=O)OCC PQVSTLUFSYVLTO-UHFFFAOYSA-N 0.000 claims abstract description 27
- GLXDVVHUTZTUQK-UHFFFAOYSA-M lithium hydroxide monohydrate Substances [Li+].O.[OH-] GLXDVVHUTZTUQK-UHFFFAOYSA-M 0.000 claims abstract description 27
- 229940040692 lithium hydroxide monohydrate Drugs 0.000 claims abstract description 27
- 238000002156 mixing Methods 0.000 claims abstract description 25
- 239000002562 thickening agent Substances 0.000 claims abstract description 22
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 claims abstract description 20
- 239000004327 boric acid Substances 0.000 claims abstract description 20
- USIVOQPNOMFSGI-UHFFFAOYSA-N 4-O-(4,5-dihydroimidazol-1-yl) 1-O-heptadec-1-enyl butanedioate Chemical compound C(CCC(=O)ON1C=NCC1)(=O)OC=CCCCCCCCCCCCCCCC USIVOQPNOMFSGI-UHFFFAOYSA-N 0.000 claims abstract description 19
- 239000002253 acid Substances 0.000 claims abstract description 19
- 238000003756 stirring Methods 0.000 claims abstract description 17
- 239000002199 base oil Substances 0.000 claims abstract description 16
- 238000010438 heat treatment Methods 0.000 claims abstract description 12
- 238000006243 chemical reaction Methods 0.000 claims abstract description 9
- 238000001816 cooling Methods 0.000 claims abstract description 7
- 238000000227 grinding Methods 0.000 claims abstract description 6
- 238000007670 refining Methods 0.000 claims abstract description 6
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims description 22
- 150000004996 alkyl benzenes Chemical class 0.000 claims description 22
- 239000011734 sodium Substances 0.000 claims description 22
- 229910052708 sodium Inorganic materials 0.000 claims description 22
- 229910052788 barium Inorganic materials 0.000 claims description 19
- DSAJWYNOEDNPEQ-UHFFFAOYSA-N barium atom Chemical compound [Ba] DSAJWYNOEDNPEQ-UHFFFAOYSA-N 0.000 claims description 19
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims description 14
- 239000003963 antioxidant agent Substances 0.000 claims description 14
- 230000003078 antioxidant effect Effects 0.000 claims description 14
- 239000011777 magnesium Substances 0.000 claims description 14
- 229910052749 magnesium Inorganic materials 0.000 claims description 14
- 239000000344 soap Substances 0.000 claims description 14
- 238000005260 corrosion Methods 0.000 claims description 10
- 230000007797 corrosion Effects 0.000 claims description 10
- 239000000203 mixture Substances 0.000 claims description 8
- XQVWYOYUZDUNRW-UHFFFAOYSA-N N-Phenyl-1-naphthylamine Chemical compound C=1C=CC2=CC=CC=C2C=1NC1=CC=CC=C1 XQVWYOYUZDUNRW-UHFFFAOYSA-N 0.000 claims description 7
- 239000004359 castor oil Substances 0.000 claims description 6
- 235000019438 castor oil Nutrition 0.000 claims description 6
- DMBHHRLKUKUOEG-UHFFFAOYSA-N diphenylamine Chemical compound C=1C=CC=CC=1NC1=CC=CC=C1 DMBHHRLKUKUOEG-UHFFFAOYSA-N 0.000 claims description 6
- ZEMPKEQAKRGZGQ-XOQCFJPHSA-N glycerol triricinoleate Natural products CCCCCC[C@@H](O)CC=CCCCCCCCC(=O)OC[C@@H](COC(=O)CCCCCCCC=CC[C@@H](O)CCCCCC)OC(=O)CCCCCCCC=CC[C@H](O)CCCCCC ZEMPKEQAKRGZGQ-XOQCFJPHSA-N 0.000 claims description 6
- 150000002148 esters Chemical class 0.000 claims description 5
- WSFQLUVWDKCYSW-UHFFFAOYSA-M sodium;2-hydroxy-3-morpholin-4-ylpropane-1-sulfonate Chemical compound [Na+].[O-]S(=O)(=O)CC(O)CN1CCOCC1 WSFQLUVWDKCYSW-UHFFFAOYSA-M 0.000 claims description 5
- MDWVSAYEQPLWMX-UHFFFAOYSA-N 4,4'-Methylenebis(2,6-di-tert-butylphenol) Chemical compound CC(C)(C)C1=C(O)C(C(C)(C)C)=CC(CC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)=C1 MDWVSAYEQPLWMX-UHFFFAOYSA-N 0.000 claims description 4
- 239000003795 chemical substances by application Substances 0.000 claims description 4
- QWQNFXDYOCUEER-UHFFFAOYSA-N 2,3-ditert-butyl-4-methylphenol Chemical compound CC1=CC=C(O)C(C(C)(C)C)=C1C(C)(C)C QWQNFXDYOCUEER-UHFFFAOYSA-N 0.000 claims description 3
- YSIQDTZQRDDQNF-UHFFFAOYSA-L barium(2+);2,3-di(nonyl)naphthalene-1-sulfonate Chemical compound [Ba+2].C1=CC=C2C(S([O-])(=O)=O)=C(CCCCCCCCC)C(CCCCCCCCC)=CC2=C1.C1=CC=C2C(S([O-])(=O)=O)=C(CCCCCCCCC)C(CCCCCCCCC)=CC2=C1 YSIQDTZQRDDQNF-UHFFFAOYSA-L 0.000 claims description 3
- VLLMWSRANPNYQX-UHFFFAOYSA-N thiadiazole Chemical compound C1=CSN=N1.C1=CSN=N1 VLLMWSRANPNYQX-UHFFFAOYSA-N 0.000 claims description 3
- ICLYJLBTOGPLMC-KVVVOXFISA-N (z)-octadec-9-enoate;tris(2-hydroxyethyl)azanium Chemical compound OCCN(CCO)CCO.CCCCCCCC\C=C/CCCCCCCC(O)=O ICLYJLBTOGPLMC-KVVVOXFISA-N 0.000 claims description 2
- 239000004166 Lanolin Substances 0.000 claims description 2
- QRUDEWIWKLJBPS-UHFFFAOYSA-N benzotriazole Chemical compound C1=CC=C2N[N][N]C2=C1 QRUDEWIWKLJBPS-UHFFFAOYSA-N 0.000 claims description 2
- 239000012964 benzotriazole Substances 0.000 claims description 2
- 239000003112 inhibitor Substances 0.000 claims description 2
- 229940039717 lanolin Drugs 0.000 claims description 2
- 235000019388 lanolin Nutrition 0.000 claims description 2
- 229940117013 triethanolamine oleate Drugs 0.000 claims description 2
- DKVNPHBNOWQYFE-UHFFFAOYSA-N carbamodithioic acid Chemical compound NC(S)=S DKVNPHBNOWQYFE-UHFFFAOYSA-N 0.000 claims 1
- 239000012990 dithiocarbamate Substances 0.000 claims 1
- 239000003973 paint Substances 0.000 claims 1
- 230000001050 lubricating effect Effects 0.000 abstract description 33
- 238000002844 melting Methods 0.000 abstract description 4
- 230000008018 melting Effects 0.000 abstract description 4
- 239000000571 coke Substances 0.000 abstract description 3
- 230000000052 comparative effect Effects 0.000 description 45
- 239000011575 calcium Substances 0.000 description 33
- 229910052791 calcium Inorganic materials 0.000 description 33
- 238000012360 testing method Methods 0.000 description 30
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 27
- 238000002474 experimental method Methods 0.000 description 18
- 238000000034 method Methods 0.000 description 11
- 239000003921 oil Substances 0.000 description 11
- 239000000126 substance Substances 0.000 description 11
- 238000005461 lubrication Methods 0.000 description 10
- 230000002035 prolonged effect Effects 0.000 description 9
- QDCPNGVVOWVKJG-VAWYXSNFSA-N 2-[(e)-dodec-1-enyl]butanedioic acid Chemical compound CCCCCCCCCC\C=C\C(C(O)=O)CC(O)=O QDCPNGVVOWVKJG-VAWYXSNFSA-N 0.000 description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 8
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 7
- 238000011049 filling Methods 0.000 description 7
- 238000005086 pumping Methods 0.000 description 7
- 229910052725 zinc Inorganic materials 0.000 description 7
- 239000011701 zinc Substances 0.000 description 7
- 229910000831 Steel Inorganic materials 0.000 description 6
- 229940092714 benzenesulfonic acid Drugs 0.000 description 6
- 229910052751 metal Inorganic materials 0.000 description 6
- 239000002184 metal Substances 0.000 description 6
- 239000010959 steel Substances 0.000 description 6
- LSNNMFCWUKXFEE-UHFFFAOYSA-M Bisulfite Chemical compound OS([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-M 0.000 description 5
- 230000003647 oxidation Effects 0.000 description 5
- 238000007254 oxidation reaction Methods 0.000 description 5
- 230000035515 penetration Effects 0.000 description 5
- 238000004321 preservation Methods 0.000 description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 4
- 229910052802 copper Inorganic materials 0.000 description 4
- 239000010949 copper Substances 0.000 description 4
- OSPSWZSRKYCQPF-UHFFFAOYSA-N dibutoxy(oxo)phosphanium Chemical group CCCCO[P+](=O)OCCCC OSPSWZSRKYCQPF-UHFFFAOYSA-N 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 238000001704 evaporation Methods 0.000 description 4
- 230000008020 evaporation Effects 0.000 description 4
- 239000012535 impurity Substances 0.000 description 4
- 238000009776 industrial production Methods 0.000 description 4
- 238000011056 performance test Methods 0.000 description 4
- 239000007921 spray Substances 0.000 description 4
- ICBKHBLRANVFRT-UHFFFAOYSA-N 4-[(2-heptadec-1-enyl-4,5-dihydroimidazol-1-yl)oxy]-4-oxobutanoic acid Chemical compound CCCCCCCCCCCCCCCC=CC1=NCCN1OC(CCC(O)=O)=O ICBKHBLRANVFRT-UHFFFAOYSA-N 0.000 description 3
- 229920002367 Polyisobutene Polymers 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 3
- 229940077388 benzenesulfonate Drugs 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 3
- 239000000084 colloidal system Substances 0.000 description 3
- 238000013329 compounding Methods 0.000 description 3
- 238000003723 Smelting Methods 0.000 description 2
- 235000021355 Stearic acid Nutrition 0.000 description 2
- 230000001066 destructive effect Effects 0.000 description 2
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 2
- 239000000314 lubricant Substances 0.000 description 2
- 239000010687 lubricating oil Substances 0.000 description 2
- 239000002480 mineral oil Substances 0.000 description 2
- 235000010446 mineral oil Nutrition 0.000 description 2
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 description 2
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 description 2
- 229920000435 poly(dimethylsiloxane) Polymers 0.000 description 2
- CXMXRPHRNRROMY-UHFFFAOYSA-N sebacic acid Chemical compound OC(=O)CCCCCCCCC(O)=O CXMXRPHRNRROMY-UHFFFAOYSA-N 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 238000001612 separation test Methods 0.000 description 2
- 239000008117 stearic acid Substances 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- 239000001993 wax Substances 0.000 description 2
- OHVLMTFVQDZYHP-UHFFFAOYSA-N 1-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)-2-[4-[2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidin-5-yl]piperazin-1-yl]ethanone Chemical compound N1N=NC=2CN(CCC=21)C(CN1CCN(CC1)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F)=O OHVLMTFVQDZYHP-UHFFFAOYSA-N 0.000 description 1
- KZEVSDGEBAJOTK-UHFFFAOYSA-N 1-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)-2-[5-[2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidin-5-yl]-1,3,4-oxadiazol-2-yl]ethanone Chemical compound N1N=NC=2CN(CCC=21)C(CC=1OC(=NN=1)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F)=O KZEVSDGEBAJOTK-UHFFFAOYSA-N 0.000 description 1
- LDXJRKWFNNFDSA-UHFFFAOYSA-N 2-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)-1-[4-[2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidin-5-yl]piperazin-1-yl]ethanone Chemical compound C1CN(CC2=NNN=C21)CC(=O)N3CCN(CC3)C4=CN=C(N=C4)NCC5=CC(=CC=C5)OC(F)(F)F LDXJRKWFNNFDSA-UHFFFAOYSA-N 0.000 description 1
- JQMFQLVAJGZSQS-UHFFFAOYSA-N 2-[4-[2-(2,3-dihydro-1H-inden-2-ylamino)pyrimidin-5-yl]piperazin-1-yl]-N-(2-oxo-3H-1,3-benzoxazol-6-yl)acetamide Chemical compound C1C(CC2=CC=CC=C12)NC1=NC=C(C=N1)N1CCN(CC1)CC(=O)NC1=CC2=C(NC(O2)=O)C=C1 JQMFQLVAJGZSQS-UHFFFAOYSA-N 0.000 description 1
- YLZOPXRUQYQQID-UHFFFAOYSA-N 3-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)-1-[4-[2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidin-5-yl]piperazin-1-yl]propan-1-one Chemical compound N1N=NC=2CN(CCC=21)CCC(=O)N1CCN(CC1)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F YLZOPXRUQYQQID-UHFFFAOYSA-N 0.000 description 1
- YATBSPYHABVHEA-UHFFFAOYSA-N CCCCCCCCCCCCCCCC=CC(CC(O)=O)(C(O)=O)N1C=NCC1 Chemical class CCCCCCCCCCCCCCCC=CC(CC(O)=O)(C(O)=O)N1C=NCC1 YATBSPYHABVHEA-UHFFFAOYSA-N 0.000 description 1
- AFCARXCZXQIEQB-UHFFFAOYSA-N N-[3-oxo-3-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)propyl]-2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidine-5-carboxamide Chemical compound O=C(CCNC(=O)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F)N1CC2=C(CC1)NN=N2 AFCARXCZXQIEQB-UHFFFAOYSA-N 0.000 description 1
- 239000004721 Polyphenylene oxide Substances 0.000 description 1
- 229920002396 Polyurea Polymers 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 1
- 239000010425 asbestos Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000440 bentonite Substances 0.000 description 1
- 229910000278 bentonite Inorganic materials 0.000 description 1
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 description 1
- 239000006229 carbon black Substances 0.000 description 1
- 238000003889 chemical engineering Methods 0.000 description 1
- 238000004939 coking Methods 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- UZEFVQBWJSFOFE-UHFFFAOYSA-N dibutyl hydrogen phosphite Chemical compound CCCCOP(O)OCCCC UZEFVQBWJSFOFE-UHFFFAOYSA-N 0.000 description 1
- 235000014113 dietary fatty acids Nutrition 0.000 description 1
- 238000005553 drilling Methods 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
- 239000010439 graphite Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 238000002386 leaching Methods 0.000 description 1
- 230000003137 locomotive effect Effects 0.000 description 1
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 description 1
- 238000000386 microscopy Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-N phosphoric acid Substances OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 1
- 229920000570 polyether Polymers 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 229910052895 riebeckite Inorganic materials 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000013112 stability test Methods 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000010689 synthetic lubricating oil Substances 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
- C10M169/00—Lubricating compositions characterised by containing as components a mixture of at least two types of ingredient selected from base-materials, thickeners or additives, covered by the preceding groups, each of these compounds being essential
-
- 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
- C10M2201/087—Boron oxides, acids or salts
- C10M2201/0876—Boron oxides, acids or salts used as thickening agent
-
- 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
- C10M2207/10—Carboxylix acids; Neutral salts thereof
- C10M2207/12—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms
- C10M2207/125—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms having hydrocarbon chains of eight up to twenty-nine carbon atoms, i.e. fatty acids
- C10M2207/128—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms having hydrocarbon chains of eight up to twenty-nine carbon atoms, i.e. fatty acids containing hydroxy groups; Ethers thereof
- C10M2207/1285—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms having hydrocarbon chains of eight up to twenty-nine carbon atoms, i.e. fatty acids containing hydroxy groups; Ethers thereof used as thickening agents
-
- 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
- C10M2207/40—Fatty vegetable or animal oils
- C10M2207/402—Castor 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
- C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant compositions
- C10M2215/22—Heterocyclic nitrogen compounds
- C10M2215/223—Five-membered rings containing nitrogen and carbon only
- C10M2215/224—Imidazoles
-
- 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
- C10M2219/00—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions
- C10M2219/04—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions containing sulfur-to-oxygen bonds, i.e. sulfones, sulfoxides
- C10M2219/044—Sulfonic acids, Derivatives thereof, e.g. neutral salts
-
- 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
- C10M2229/00—Organic macromolecular compounds containing atoms of elements not provided for in groups C10M2205/00, C10M2209/00, C10M2213/00, C10M2217/00, C10M2221/00 or C10M2225/00 as ingredients in lubricant compositions
- C10M2229/04—Siloxanes with specific structure
- C10M2229/041—Siloxanes with specific structure containing aliphatic substituents
- C10M2229/0415—Siloxanes with specific structure containing aliphatic substituents used as base material
-
- 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
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- 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
- C10N2030/08—Resistance to extreme temperature
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- 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
- C10N2030/10—Inhibition of oxidation, e.g. anti-oxidants
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- 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
- C10N2030/72—Extended drain
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- 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
- C10N2040/02—Bearings
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- 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
- C10N2050/00—Form in which the lubricant is applied to the material being lubricated
- C10N2050/10—Semi-solids; greasy
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- Chemical & Material Sciences (AREA)
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Abstract
The application relates to the technical field of lubricating grease, and particularly discloses a composite lithium base grease and a preparation method thereof. The composite lithium-based grease comprises the following components in parts by mass: 70-80 parts of base oil; 10 to 15 parts of lithium-based thickening agent; 5-10 parts of an additive; the additive at least comprises heavy alkylbenzene sulfonate, petroleum sulfonate and heptadecenyl imidazolinyl succinate. The preparation method comprises the following steps: step 1), adding base oil into a reaction container, heating, adding dodecahydroxystearic acid, and dissolving; step 2), adding boric acid, preserving heat, stirring and mixing; step 3), adding lithium hydroxide monohydrate, preserving heat and reacting; step 4), heating, dehydrating and saponifying, keeping the temperature at the highest refining temperature point, and melting; and 5) cooling, homogenizing, adding an additive, stirring and grinding to obtain the composite lithium-based grease. The composite lithium-based grease has good high-temperature resistance, and is not easy to coke and deposit after high-temperature volatilization.
Description
Technical Field
The application relates to the technical field of lubricating grease, in particular to a composite lithium base grease and a preparation method thereof.
Background
Grease is a thick greasy semisolid. The lubricating grease is commonly used for a friction part of machinery, plays a role in lubricating and sealing the machinery, can also be used for a metal surface, plays a role in filling gaps and preventing rust, and is mainly prepared from mineral oil (or synthetic lubricating oil) and a thickening agent.
At present, the lubricating grease is widely applied in daily use and life, and the lubricating grease can be divided into soap-based grease and non-soap-based grease according to a thickening agent. The thickener for soap-based grease is usually metal soap such as lithium, sodium, calcium, aluminum, zinc, etc., and metal soap such as potassium, barium, lead, manganese, etc. The thickening agent of non-soap base grease is made up by using graphite, carbon black, asbestos and synthetic (for example polyurea base and bentonite), and according to the application it can be divided into two kinds of general lubricating grease and special lubricating grease, the former is used for general machine parts, and the latter is used for tractor, railway locomotive, ship machinery, petroleum drilling machinery and valve. The working principle of the lubricating grease is that the thickening agent keeps oil at a position needing lubricating, and when a load exists, the thickening agent releases the oil, so that the lubricating grease has a lubricating effect.
The most commonly used lithium-based lubricating grease is prepared by blending hydroxy fatty acid lithium soap thickened mineral oil and various additives such as antioxidant, antirust, anticorrosive and the like, extreme pressure antiwear and the like. The lithium-based lubricating grease has excellent water resistance, mechanical stability, extreme pressure and wear resistance, water resistance, pumpability, rust resistance and oxidation stability. Lithium grease is also often used in high temperature working environment, but ordinary lithium grease is easily waxed after melting and cooling to lose lubricating function.
The lithium-based lubricating grease is specially provided for solving the problem that ordinary lithium-based lubricating grease is easy to wax and lose lubricating function after being melted and cooled.
Disclosure of Invention
In order to improve the problem that ordinary lithium-based lubricating grease is easy to wax and lose the lubricating function after being melted and cooled, the application provides a composite lithium-based grease and a preparation method thereof.
In a first aspect, the present application provides a composite lithium-based grease, which adopts the following technical scheme:
a composite lithium-based grease comprises the following components in parts by mass:
base oil: 70 to 80 parts;
lithium-based thickener: 10 to 15 parts;
additive: 5 to 10 parts;
the lithium-based thickener is prepared by saponifying dodecahydroxystearic acid, boric acid and lithium hydroxide monohydrate;
the additive comprises at least a heavy alkylbenzene sulfonate, a petroleum sulfonate, and a heptadecenyl imidazolinyl succinate.
By adopting the technical scheme, the heavy alkylbenzene sulfonate, the petroleum sulfonate and the heptadecenyl imidazolinyl succinate are compounded as additives, and the prepared composite lithium-based grease has no melting point, is not easy to run off at high temperature, can effectively prevent 'hot spots' generated by metal movement from damaging colloids, is more suitable for high-temperature working condition environments, has good high-temperature resistance, can completely volatilize under the high-temperature working condition environments, can not coke and deposit carbon, and is a preferential lubricant for heavy bearings used by steel smelting enterprises; the filling amount of the bearing can be reduced, the damage of the bearing due to excessive lubrication is reduced, the service life of the bearing is prolonged, and the damage effect of the excessive lubrication can be reduced to the maximum extent; the cost of industrial production is reduced.
Preferably, the lithium complex grease comprises the following components in parts by mass:
base oil: 72 to 78;
lithium-based thickener: 12 to 14;
additive: 6 to 8;
the lithium-based thickening agent is prepared by saponifying dodecahydroxystearic acid, boric acid and lithium hydroxide monohydrate;
the additive at least comprises heavy alkylbenzene sulfonate, petroleum sulfonate and heptadecenyl imidazolinyl succinate.
Preferably, the molar ratio of the lithium hydroxide monohydrate to the dodecahydroxystearic acid is 1: (1 to 1.2), wherein the molar ratio of the lithium hydroxide monohydrate to the boric acid is 1: (1 to 1.2).
The lithium-based thickening agent is formed by saponifying dodecahydroxy stearic acid, boric acid and lithium hydroxide monohydrate, so that the composite lithium-based grease has good high-temperature resistance, is not easy to run off at high temperature, can help to reduce the damage of 'hot points' generated by metal movement to colloids, is more suitable for high-temperature working condition environments, can completely volatilize at the high-temperature working condition environments, can not coke and deposit carbon, has good fluidity at the low-temperature environment, has excellent pumping performance, and has excellent performance in a heat-preservation centralized oil supply system in winter.
Preferably, the additive also comprises one or more of antioxidant, extreme pressure agent, tackifier and corrosion inhibitor.
Preferably, the antioxidant comprises one or more mixtures of 4,4' -methylenebis- (2, 6-di-tert-butylphenol), 2, 3-di-tert-butyl-p-cresol, N-phenyl-alpha-naphthylamine, dialkyldiphenylamine, dialkyldithiocarbamate, zinc dialkyldithiophosphate, benzotriazole-aldehyde-amine condensate, and 2, 6-bis (alkyldithio) thiadiazole.
By selecting a proper antioxidant to cooperatively cooperate with the heavy alkylbenzene sulfonate, the petroleum sulfonate and the heptadecenyl imidazolium succinate, the filling amount of the bearing can be reduced, the damage of the bearing due to excessive lubrication is further reduced, the damage of the excessive lubrication can be reduced to the maximum extent, and the service life of the bearing is further prolonged.
Preferably, the additive also comprises one or more of zinc naphthenate, barium dinonylnaphthalene sulfonate, benzotriazole, synthetic sulfonate, alkyl phosphate imidazoline salt, oxidized petroleum ester barium soap, alkenyl succinate, lanolin magnesium soap, triethanolamine oleate and sulfonated castor oil.
The additive is added with the substances, and after the substances are compounded with the heavy alkylbenzene sulfonate, the petroleum sulfonate and the heptadecenyl imidazolinyl succinate, the extreme pressure property of the lithium-based lubricating grease is increased to a greater extent, the abrasion resistance of the lithium-based lubricating grease in a high-temperature working environment can be further improved, and the prepared lithium-based lubricating grease is more suitable for the high-temperature working condition environment.
Preferably, the heavy alkylbenzene sulfonate comprises one or more of a mixture of heavy alkylbenzene sulfonate sodium, heavy alkylbenzene sulfonate barium and heavy alkylbenzene sulfonate magnesium.
The matching effect of the heavy alkylbenzene sulfonate, the heavy alkylbenzene sodium sulfonate, the heavy alkylbenzene barium sulfonate, the heavy alkylbenzene magnesium sulfonate, the petroleum sulfonate and the heptadecenyl imidazolinyl succinate is better, so that the low-temperature resistance of the composite lithium-based grease is promoted, the composite lithium-based grease is good in fluidity in a low-temperature environment, excellent in pumping performance and excellent in performance in a non-heat-preservation centralized oil supply system in winter.
Preferably, the petroleum sulfonate is prepared from petroleum sodium sulfonate, petroleum barium sulfonate, 1: (1 to 3) in a mass ratio.
The high-temperature resistance of the composite lithium-based grease is greatly improved by compounding the sodium petroleum sulfonate and the barium petroleum sulfonate according to a specific proportion, and the composite lithium-based grease is not easy to run off at high temperature, so that the composite lithium-based grease is more suitable for high-temperature working conditions, and meanwhile, the water spray resistance of the composite lithium-based grease is effectively promoted, so that the prepared composite lithium-based grease has a wider working range and is suitable for humid severe working environments.
Preferably, the synthetic sulfonate is prepared from synthetic sodium sulfonate, synthetic magnesium sulfonate in a ratio of 1: (3 to 4) in a mass ratio.
The sulfonate is compounded and synthesized according to a specific proportion, so that the low-temperature pumping performance of the composite lithium base grease is promoted, the prepared composite lithium base grease has good fluidity in a low-temperature environment and excellent pumping performance, the composite lithium base grease is excellent in performance in a heat-preservation centralized oil supply system in winter, the composite lithium base grease is not easy to run off, the leakage amount of the composite lithium base grease after work can be further reduced, the bearing filling amount can be reduced, the damage of the bearing due to excess lubrication is reduced, the service life of the bearing is prolonged, and the damage effect of excess lubrication can be reduced to the maximum extent; the cost of industrial production is reduced.
In a second aspect, the present application provides a method for preparing a composite lithium-based grease, which adopts the following technical scheme:
a preparation method of composite lithium-based grease comprises the following steps:
adding base oil into a reaction container in the step 1), heating to 90-95 ℃, adding dodecahydroxystearic acid, and stirring to fully dissolve;
step 2), adding boric acid, preserving heat, continuously stirring and mixing;
step 3), adding lithium hydroxide monohydrate, keeping the temperature continuously, and reacting;
step 4), heating to 220-230 ℃, dehydrating and saponifying, and keeping the temperature at the highest refining temperature for 5-10min until the mixture is completely melted;
and 5) cooling to 90-95 ℃, homogenizing, adding an additive, stirring, and grinding to obtain the composite lithium-based grease.
The method adopts the steps that dodecahydroxystearic acid, boric acid and sebacic acid are saponified with lithium hydroxide monohydrate and then mixed and melted with heavy alkylbenzene sulfonate, petroleum sulfonate and heptadecenyl imidazolium succinate, so that the prepared composite lithium grease is not easy to run off at high temperature, the damage of metal to colloid at high temperature is reduced, and the method is more suitable for high-temperature working condition environments; the obtained composite lithium-based grease has good high-temperature resistance, can completely volatilize under a high-temperature working condition environment without coking and carbon deposition, can reduce the filling amount of the bearing, prolongs the service life of the bearing, and can reduce the destructive effect of excessive lubrication to the maximum extent; the cost of industrial production is reduced, and meanwhile, the fluidity is good in a low-temperature environment, the pumping performance is excellent, and the performance is excellent in a non-heat-preservation centralized oil supply system in winter.
In summary, the present application has the following beneficial technical effects:
1. the heavy alkylbenzene sulfonate, the petroleum sulfonate and the heptadecenyl imidazolium succinate are used as additives to be compounded, and the prepared composite lithium-based grease has no melting point and is not easy to run off at high temperature, so that the composite lithium-based grease is more suitable for a high-temperature working condition environment, has good high-temperature resistance, can be completely volatilized under the high-temperature working condition environment, cannot be coked and deposited, and is a preferential lubricant for heavy bearings used by steel smelting enterprises; the filling amount of the bearing can be reduced, the service life of the bearing is prolonged, and the destructive effect of excessive lubrication can be reduced to the maximum extent; the cost of industrial production is reduced.
2. By selecting a proper antioxidant to be cooperatively matched with the heavy alkylbenzene sulfonate, the petroleum sulfonate and the heptadecenyl imidazolinyl succinate, the filling amount of the bearing can be reduced, the damage of the bearing due to excessive lubrication is further reduced, the damage of the excessive lubrication can be reduced to the maximum extent, and the service life of the bearing is further prolonged.
3. After the additive is compounded with the heavy alkylbenzene sulfonate, the petroleum sulfonate and the heptadecenyl imidazolinyl succinate, the extreme pressure property of the lithium-based lubricating grease is increased to a greater extent, the abrasion resistance of the lithium-based lubricating grease in a high-temperature working environment can be further improved, and the prepared lithium-based lubricating grease is more suitable for the high-temperature working condition environment.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The source information of each raw material used in the following examples and comparative examples is detailed in table 1.
TABLE 1
| Starting materials | Source information |
| Hydrogenated castor oil | Guangzhou Tongjie chemical engineering Co., ltd, the cargo number is TJ033 |
| Lithium hydroxide monohydrate | GUANGDONG WENGJIANG CHEMICAL REAGENT Co.,Ltd. |
| Dodecahydroxy stearic acid | Guangzhou Runlu chemical Co Ltd |
| Boric acid | Shandong Jingtai chemical industryLimited Co. |
| Calcium heavy alkyl benzene sulfonate | Jiangsu san Lai energy science and technology Limited |
| Petroleum sulfonic acid calcium salt | Jinan Shuoyuan chemical industry Co., ltd, the product number is T106 calcium sulfonate |
| Heptadecenyl imidazolinyl succinate | Shanghai Midcal chemical Co., ltd |
| Polyisobutenes | The model number of Guangzhou Dongdong hong chemical industry Co Ltd is PB1300 2400 |
| Zinc dialkyl dithiophosphate | Jingmen City Dong Xin biological science and technology model 312868 |
| Phosphorous acid di-n-butyl ester | The Guangzhou Shaosheng chemical engineering technology limited model is t321 |
| 4,4' -methylenebis- (2, 6-di-tert-butylphenol) | Shanghai Jizhi Biochemical Technology Co.,Ltd. |
| N-phenyl-alpha-naphthylamines | The code number of Beijing Tian chemical industry Co Ltd is T531 |
| Dialkyl diphenylamine | The Shandong Sankai chemical technology Limited type number t534 |
| Sodium dialkyldithiocarbamate | The product number of the Sigma Aldrich trade company is 71513-1L |
| Alkyl imidazoline phosphate salts | Dalian Huapu chemical Co Ltd |
| Oxidized petroleum ester barium soap | The model number of Suzhou Xingchang chemical industry Co., ltd is T743 |
| Zinc naphthenate | Model number of Wuxi city De Yu chemical Co., ltd is ZHZ |
| Sodium dialkylbenzenesulfonate | Nanjing Baozen trade Co., ltd model number T702 |
| Barium heavy alkyl benzene sulfonate | Nanjing Baozen trade company, inc. model number T701 |
| Petroleum sulfonic acid sodium salt | Shandong Fujia chemical Co Ltd |
| Petroleum sulfonic acid barium salt | Shandong Fujia chemical Co., ltd |
| Synthetic sodium sulfonate | The model number of Hebei Tuzhu lubricating oil marketing company Limited is T702 |
| Synthetic magnesium sulfonate | The model number of Hebei Tuzhu lubricating oil marketing company Limited is T107 |
| Dodecenylsuccinic acid | The model number of the Jinan Shuo humanization company is T746 |
Example 1
A composite lithium-based grease comprises 70kg of base oil, 10kg of lithium-based thickening agent and 5kg of additive.
In this example, hydrogenated castor oil was used as the base oil.
The lithium-based thickening agent is prepared by saponifying dodecahydroxystearic acid, boric acid and lithium hydroxide monohydrate, wherein the molar ratio of the lithium hydroxide monohydrate to the dodecahydroxystearic acid is 1:0.5, the molar ratio of lithium hydroxide monohydrate to boric acid is 1:0.5.
the additive is prepared by mixing 2kg of heavy alkylbenzene sulfonate, 2kg of petroleum sulfonate and 1kg of heptadecenyl imidazolinyl succinate.
The heavy alkylbenzene sulfonate is calcium heavy alkylbenzene sulfonate.
The petroleum sulfonate is calcium petroleum sulfonate.
The embodiment also discloses a preparation method of the composite lithium base grease, which comprises the following steps:
adding polyether into a reaction container in the step 1), heating to 90 ℃, adding dodecahydroxystearic acid, and stirring to fully dissolve;
step 2), adding boric acid, preserving heat, continuously stirring and mixing;
step 3), adding lithium hydroxide monohydrate, continuing to preserve heat and carrying out reaction;
step 4), heating to 220 ℃, dehydrating and saponifying, and keeping the temperature at the highest refining temperature for 5min until the mixture is completely melted;
and 5) cooling to 90 ℃, homogenizing by using a homogenizer, adding the calcium dialkylbenzenesulfonate, the calcium petroleum sulfonate and the heptadecenyl imidazolinyl succinate, stirring at 500r/min, and grinding to obtain the composite lithium-based grease.
Example 2
Compared with example 1, the difference is only that:
80kg of base oil, 15kg of lithium-based thickening agent and 10kg of additive.
In this example, hydrogenated castor oil was used as the base oil.
The molar ratio of lithium hydroxide monohydrate to dodecahydroxystearic acid was 1:1.5, the molar ratio of lithium hydroxide monohydrate to boric acid is 1:1.5.
the additive is prepared by mixing 3kg of heavy alkylbenzene sulfonate, 3kg of petroleum sulfonate, 2kg of heptadecenyl imidazolinyl succinate and 2kg of tackifier.
The heavy alkylbenzene sulfonate is calcium heavy alkylbenzene sulfonate.
The petroleum sulfonate is calcium petroleum sulfonate.
Polyisobutylene is used as the tackifier.
The embodiment also discloses a preparation method of the composite lithium base grease, which comprises the following steps:
step 1), adding hydrogenated castor oil into a reaction container, heating to 95 ℃, adding dodecahydroxystearic acid, and stirring to fully dissolve;
step 2), adding boric acid, preserving heat, continuously stirring and mixing;
step 3), adding lithium hydroxide monohydrate, continuing to preserve heat and carrying out reaction;
step 4), heating to 230 ℃, dehydrating and saponifying, and keeping the temperature at the highest refining temperature for 10min until the mixture is completely melted;
and 5) cooling to 95 ℃, homogenizing by using a homogenizer, adding the calcium dialkylbenzenesulfonate, the calcium petroleum sulfonate, the heptadecenyl imidazolinyl succinate and the polyisobutylene, stirring at 500r/min, and grinding to obtain the composite lithium-based grease.
Example 3
Compared with example 1, the only difference is that:
75kg of base oil, 13g of lithium-based thickening agent and 7kg of additive.
In this example, methyl silicone oil was used as the base oil.
The additive is prepared by mixing 2kg of heavy alkylbenzene sulfonate, 2kg of petroleum sulfonate, 1kg of heptadecenyl imidazolinyl succinate, 1kg of antioxidant and 1kg of extreme pressure agent.
The heavy alkylbenzene sulfonate is calcium heavy alkylbenzene sulfonate.
The petroleum sulfonate is calcium petroleum sulfonate.
The antioxidant is zinc dialkyl dithiophosphate.
The extreme pressure agent is di-n-butyl phosphite.
The embodiment also discloses a preparation method of the composite lithium base grease, which comprises the following steps:
adding methyl silicone oil into a reaction container in the step 1), heating to 93 ℃, adding dodecahydroxystearic acid, and stirring to fully dissolve;
step 2), adding boric acid, preserving heat, continuously stirring and mixing;
step 3), adding lithium hydroxide monohydrate, keeping the temperature continuously, and reacting;
step 4), heating to 225 ℃, dehydrating and saponifying, and keeping the temperature at the highest refining temperature for 8min until the mixture is completely melted;
and 5) cooling to 93 ℃, homogenizing by using a homogenizer, adding the calcium dialkylbenzenesulfonate, calcium petroleum sulfonate, heptadecenyl imidazolinyl succinate, zinc dialkyl dithiophosphate and di-n-butyl phosphite, stirring at 500r/min, and grinding to obtain the composite lithium-based grease.
Example 4
Compared with example 3, the difference is only that:
72kg of base oil, 12kg of lithium-based thickening agent and 6kg of additive.
The additive is prepared by mixing 1.5kg of heavy alkyl benzene sulfonic acid calcium, 1kg of petroleum sulfonic acid calcium, 1.5kg of heptadecenyl imidazolinyl succinate, 1kg of zinc dialkyl dithiophosphate and 1kg of di-n-butyl phosphite.
The molar ratio of lithium hydroxide monohydrate to dodecahydroxystearic acid was 1:1, the molar ratio of lithium hydroxide monohydrate to boric acid is 1:1.
example 5
Compared with example 4, the difference is only that:
78kg of base oil, 14kg of lithium-based thickening agent and 8kg of additive.
The additive was formed by mixing 2kg of calcium heavy alkyl benzene sulfonate, 2kg of calcium petroleum sulfonate, 2kg of heptadecenyl imidazolium succinate, 1kg of zinc dialkyl dithiophosphate, and 1kg of di-n-butyl phosphite.
The molar ratio of lithium hydroxide monohydrate to dodecahydroxystearic acid was 1:1.2, the molar ratio of lithium hydroxide monohydrate to boric acid is 1:1.2.
example 6
Compared with example 3, the difference is only that:
the antioxidant is 4,4' -methylene bis- (2, 6-di-tert-butylphenol).
Example 7
Compared with example 6, the difference is only that:
the antioxidant is prepared by mixing 0.5kg of N-phenyl-alpha-naphthylamine and 0.5kg of dialkyl diphenylamine.
Example 8
Compared with example 6, the difference is only that:
the antioxidant was prepared by mixing 0.3kg of dialkyldithiocarbamate, 0.3kg of benzotriazole-aldehyde-amine condensate, and 0.4kg of 2, 6-bis (alkyldithio) thiadiazole.
The dialkyldithiocarbamate is sodium dialkyldithiocarbamate.
Example 9
Compared with example 3, the difference is only that:
the additive is prepared by mixing 2kg of heavy alkyl benzene sulfonic acid calcium, 2kg of petroleum sulfonic acid calcium, 1kg of heptadecenyl imidazolinyl succinate, 1kg of dinonyl naphthalene sulfonic acid barium salt and 1kg of alkyl phosphoric acid imidazoline salt.
The alkyl imidazoline phosphate salt is alkyl imidazoline phosphate salt.
Example 10
Compared with example 3, the difference is only that:
the additive is prepared by mixing 2kg of heavy alkyl benzene sulfonic acid calcium, 2kg of petroleum sulfonic acid calcium, 1kg of heptadecenyl imidazole carboxylic acid salt, 1kg of petroleum ester barium soap oxide and 1kg of zinc naphthenate.
Example 11
Compared with example 3, the difference is only that:
the heavy alkylbenzene sulfonate is sodium heavy alkylbenzene sulfonate.
Example 12
Compared with example 3, the only difference is that:
the heavy alkylbenzene sulfonate is prepared by mixing 1kg of heavy alkylbenzene sulfonate barium and 1kg of heavy alkylbenzene sulfonate magnesium.
Example 13
Compared with example 3, the difference is only that:
the petroleum sulfonate is prepared by mixing 1kg of petroleum sodium sulfonate and 1kg of petroleum barium sulfonate.
Example 14
Compared with example 3, the only difference is that:
the petroleum sulfonate is prepared by mixing 0.5kg of petroleum sodium sulfonate and 1.5kg of petroleum barium sulfonate.
Example 15
Compared with example 3, the difference is only that:
the synthetic sulfonate is formed by mixing 0.5kg of synthetic sodium sulfonate and 1.5kg of synthetic magnesium sulfonate.
Example 16
Compared with example 3, the difference is only that:
the synthetic sulfonate is formed by mixing 0.4kg of synthetic sodium sulfonate and 1.6kg of synthetic magnesium sulfonate.
Example 17
Compared with example 3, the only difference is that:
the antioxidant adopts 2, 3-ditert-butyl-p-cresol.
The additive is prepared by mixing 2kg of heavy alkyl benzene sulfonic acid calcium, 2kg of petroleum sulfonic acid calcium, 1kg of heptadecenyl imidazole carboxylic acid salt, 1kg of petroleum ester barium soap oxide and 1kg of zinc naphthenate.
The heavy alkylbenzene sulfonate is prepared by mixing 1kg of heavy alkylbenzene sulfonate barium and 1kg of heavy alkylbenzene sulfonate magnesium.
The petroleum sulfonate is prepared by mixing 0.5kg of petroleum sodium sulfonate and 1.5kg of petroleum barium sulfonate.
The synthetic sulfonate is formed by mixing 0.5kg of synthetic sodium sulfonate and 1.5kg of synthetic magnesium sulfonate.
Comparative example 1
Compared with example 3, the difference is only that:
equal amount of dodecenylsuccinic acid is adopted to replace the heavy alkyl benzene sulfonic acid calcium, petroleum sulfonic acid calcium and heptadecenyl imidazolinyl succinic acid salt.
Comparative example 2
Compared with example 3, the difference is only that:
equal amount of dodecenylsuccinic acid is used to replace the heavy alkyl benzene sulfonic acid calcium.
Comparative example 3
Compared with example 3, the difference is only that:
equal amount of dodecenylsuccinic acid is used to replace calcium petroleum sulfonate.
Comparative example 4
An equivalent amount of dodecenylsuccinic acid was used instead of heptadecenylimidazolinyl succinate.
Comparative example 5
Equal amounts of dodecenylsuccinic acid were used instead of calcium petroleum sulfonate, heptadecenylimidazolinyl succinate.
Comparative example 6
Equal amounts of dodecenylsuccinic acid were used instead of calcium heavy alkylbenzene sulfonate, heptadecenylimidazolinyl succinate.
Comparative example 7
Equal amount of dodecenylsuccinic acid is adopted to replace calcium dialkylbenzene sulfonate and calcium petroleum sulfonate.
Performance test
Experiment 1 working cone penetration test
Working cone penetration tests were carried out according to GB/T269-91 cone penetration test for greases and greases in examples 1 to 17 and comparative examples 1 to 7.
Experiment 2 ten thousand Rate of Change test
The rate of change was measured 10 ten thousand times in examples 1 to 17 and comparative examples 1 to 7 in accordance with GB/T269-91 method for measuring the penetration of greases and greases.
Experiment 3 drop test
The dropping point tests were carried out for examples 1 to 17 and comparative examples 1 to 7 in accordance with GB/T3498-2008 "measuring method for dropping point of lubricating grease in wide temperature range".
Experiment 4 extreme pressure value test
SH/T0202-1992 extreme pressure Performance test (four ball machine method) extreme pressure test was performed on examples 1 to 17 and comparative examples 1 to 7.
Experiment 5 scrub spot diameter test
The wear point diameter was measured in accordance with SH/T0204-1992, lubricating grease antiwear performance test (four-ball machine method), in examples 1 to 17, and comparative examples 1 to 7.
Experiment 6 water shower loss test
The water spray loss was measured in accordance with SH/T0109-2004 "test for measuring Water spray resistance of lubricating grease" in examples 1 to 17 and comparative examples 1 to 7.
Experiment 7 deg.C Evaporation test
The 180 ℃ evaporation degree test was carried out in accordance with SH/T0337-1992 grease Evaporation degree test in examples 1 to 17 and comparative examples 1 to 7.
Experiment 8 steel mesh oil separation test
Steel mesh oil separation tests were carried out on examples 1 to 17 and comparative examples 1 to 7 according to SH/T0324-1992 method (static method) for measuring oil separation in a steel mesh for lubricating grease.
Experiment 9 ℃ loss at 163 ℃ test
The leakage at 163 ℃ was measured in examples 1 to 17 and comparative examples 1 to 7 in accordance with SH/T0326-1992, lubricating grease leakage at automobile wheel bearing.
EXPERIMENT 10 copper sheet Corrosion test
The corrosion test of the copper sheet was carried out in accordance with GB/T7326-1987, lubricating grease copper sheet corrosion test method, in examples 1 to 17 and comparative examples 1 to 7.
Experiment 11 Corrosion resistance test
The corrosion resistance tests were carried out in examples 1 to 17 and comparative examples 1 to 7 in accordance with GB/T5018-2008 "lubricating grease Corrosion resistance test method".
Experiment 12 Oxidation stability test
Examples 1 to 17 and comparative examples 1 to 7 were tested for oxidation stability according to SH/T0325-1992, method for measuring oxidation stability of grease.
EXPERIMENT 13 similar viscosity test
Similar viscosity tests were carried out in examples 1 to 17 and comparative examples 1 to 7 in accordance with SH/T0048-1991 grease viscometer.
Experiment 14 impurity test
The impurities in examples 1 to 17 and comparative examples 1 to 7 were tested according to SH/T0336-1994 method for measuring the content of impurities in grease (microscopy).
Experiment 15 bearing life test
Bearing life tests were carried out according to SH/T0428-1992 working Performance test for grease in antiwear bearing at high temperature for examples 1 to 17 and comparative examples 1 to 7.
The test results of experiments 1 to 4 are shown in Table 2.
The test results of experiments 5 to 9 are shown in Table 3.
The test results of the experiments 10 to 15 are shown in Table 4.
TABLE 2
| Test item | Working cone penetration (0.1 mm) | 10 ten thousand times change rate (less than or equal to%) | Dropping point (not less than DEG C) | P D Extreme pressure value (not less than N) | P B Extreme pressure value (not less than N) |
| Industry Standard | 269-295 | 20 | 260 | 3090 | 588 |
| Example 1 | 282 | 9.8 | 279 | 4725 | 1112 |
| Example 2 | 288 | 9.4 | 273 | 4735 | 1110 |
| Example 3 | 284 | 9.2 | 275 | 4742 | 1122 |
| Example 4 | 284 | 9.5 | 281 | 4831 | 1151 |
| Example 5 | 289 | 9.0 | 280 | 4843 | 1163 |
| Example 6 | 285 | 9.2 | 284 | 4882 | 1146 |
| Example 7 | 286 | 9.5 | 281 | 4862 | 1153 |
| Example 8 | 289 | 9.4 | 283 | 4856 | 1163 |
| Example 9 | 287 | 9.4 | 289 | 4892 | 1185 |
| Example 10 | 284 | 9.5 | 286 | 4885 | 1192 |
| Example 11 | 284 | 9.5 | 284 | 4902 | 1210 |
| Example 12 | 286 | 9.5 | 282 | 4899 | 1205 |
| Example 13 | 288 | 9.4 | 274 | 4743 | 1225 |
| Example 14 | 285 | 9.5 | 272 | 4749 | 1231 |
| Example 15 | 283 | 9.0 | 298 | 4893 | 1230 |
| Example 16 | 285 | 9.3 | 293 | 4889 | 1235 |
| Example 17 | 282 | 8.9 | 305 | 4905 | 1236 |
| Comparative example 1 | 252 | 10.5 | 248 | 2452 | 684 |
| Comparative example 2 | 264 | 10.7 | 257 | 2543 | 759 |
| Comparative example 3 | 269 | 10.3 | 254 | 2584 | 764 |
| Comparative example 4 | 261 | 10.3 | 258 | 2569 | 769 |
| Comparative example 5 | 279 | 10.9 | 261 | 2632 | 773 |
| Comparative example 6 | 274 | 10.4 | 260 | 2651 | 784 |
| Comparative example 7 | 278 | 10.8 | 259 | 2645 | 778 |
TABLE 3
| Test items | Scrub spot diameter (less than or equal to mm) | Water leaching loss (less than or equal to%) | 180 ℃ evaporation degree (less than or equal to%) | Steel mesh oil separation (less than or equal to%) | Leakage loss (g less than or equal to 160℃) |
| Industry standard | 0.5 | 10 | 5 | 5 | 2.5 |
| Example 1 | 0.5 | 1.8 | 1.9 | 1.8 | 1.4 |
| Example 2 | 0.5 | 1.9 | 1.8 | 1.9 | 1.4 |
| Example 3 | 0.4 | 1.9 | 1.8 | 1.8 | 1.4 |
| Example 4 | 0.4 | 1.8 | 1.7 | 1.8 | 1.4 |
| Example 5 | 0.4 | 1.8 | 1.8 | 1.7 | 1.4 |
| Example 6 | 0.4 | 1.7 | 1.8 | 1.7 | 1.4 |
| Example 7 | 0.4 | 1.8 | 1.7 | 1.8 | 1.4 |
| Example 8 | 0.4 | 1.8 | 1.7 | 1.8 | 1.4 |
| Example 9 | 0.4 | 1.8 | 1.8 | 1.7 | 1.4 |
| Example 10 | 0.4 | 1.7 | 1.8 | 1.8 | 1.4 |
| Example 11 | 0.4 | 1.8 | 1.8 | 1.8 | 1.4 |
| Example 12 | 0.4 | 1.8 | 1.7 | 1.8 | 1.4 |
| Example 13 | 0.4 | 1.3 | 1.7 | 1.8 | 1.4 |
| Example 14 | 0.4 | 1.1 | 1.8 | 1.8 | 1.4 |
| Example 15 | 0.4 | 1.3 | 1.7 | 1.1 | 0.6 |
| Example 16 | 0.4 | 1.2 | 1.6 | 0.9 | 0.8 |
| Example 17 | 0.4 | 1.0 | 1.0 | 0.6 | 0.2 |
| Comparative example 1 | 0.7 | 3.1 | 3.5 | 3.7 | 2.4 |
| Comparative example 2 | 0.6 | 2.9 | 2.8 | 3.5 | 2.3 |
| Comparative example 3 | 0.6 | 2.8 | 2.9 | 3.4 | 2.2 |
| Comparative example 4 | 0.6 | 2.9 | 2.8 | 3.5 | 2.1 |
| Comparative example 5 | 0.6 | 2.5 | 2.6 | 3.2 | 2.3 |
| Comparative example 6 | 0.6 | 2.6 | 2.6 | 2.9 | 2.4 |
| Comparative example 7 | 0.6 | 2.5 | 2.5 | 3.0 | 2.3 |
TABLE 4
| Test item | Copper sheet corrosion (lower than or equal to grade) | Corrosion resistance (lower than or equal to grade) | Oxidation stability (less than or equal to MPa) | Similar viscosity (less than or equal to Pa.s) | Impurities (pieces/cm) 3 ） | Bearing life (mm) 2 /s） |
| Industry Standard | Stage 2 | 2 | 0.070 | 800 | 3000 | 400 |
| Example 1 | 1a | 1 | 0.048 | 775 | 89 | 1543 |
| Example 2 | 1a | 1 | 0.048 | 778 | 85 | 1597 |
| Example 3 | 1a | 1 | 0.047 | 774 | 84 | 1602 |
| Example 4 | 1a | 11 | 0.047 | 756 | 76 | 1632 |
| Example 5 | 1a | 1 | 0.048 | 752 | 78 | 1653 |
| Example 6 | 1a | 1 | 0.047 | 775 | 74 | 1734 |
| Example 7 | 1a | 1 | 0.048 | 774 | 79 | 1728 |
| Example 8 | 1a | 1 | 0.047 | 779 | 77 | 1732 |
| Example 9 | 1a | 1 | 0.047 | 780 | 72 | 1645 |
| Example 10 | 1a | 1 | 0.048 | 772 | 74 | 1628 |
| Example 11 | 1a | 1 | 0.047 | 778 | 79 | 1606 |
| Example 12 | 1a | 1 | 0.048 | 774 | 75 | 1598 |
| Example 13 | 1a | 1 | 0.048 | 769 | 83 | 1583 |
| Example 14 | 1a | 1 | 0.046 | 766 | 78 | 1590 |
| Example 15 | 1a | 1 | 0.048 | 764 | 34 | 1835 |
| Example 16 | 1a | 1 | 0.047 | 753 | 65 | 1954 |
| Example 17 | 1a | 1 | 0.046 | 723 | 0 | 2000 |
| Comparative example 1 | 2 | 2 | 0.031 | 800 | 165 | 1267 |
| Comparative example 2 | 2 | 2 | 0.039 | 798 | 133 | 1276 |
| Comparative example 3 | 2 | 2 | 0.034 | 792 | 128 | 1297 |
| Comparative example 4 | 2 | 2 | 0.031 | 798 | 142 | 1289 |
| Comparative example 5 | 2 | 2 | 0.037 | 795 | 124 | 1294 |
| Comparative example 6 | 2 | 2 | 0.033 | 796 | 117 | 1302 |
| Comparative example 7 | 2 | 2 | 0.035 | 793 | 126 | 1308 |
According to tables 2 to 4, by comparing the data in examples 1 to 3 with the data in comparative examples 1 to 7, the composite lithium grease prepared by compounding the dialkylbenzenesulfonate, the petroleum sulfonate and the heptadecenylimidazolium-alkenyl succinate has the advantages that the high-temperature resistance is obviously improved, the loss at high temperature is obviously reduced, the service life of the bearing is obviously prolonged, and in conclusion, the composite lithium grease prepared by compounding the dialkylbenzenesulfonate, the petroleum sulfonate and the heptadecenylimidazolium-alkenyl succinate is not easy to lose at high temperature, the high-temperature resistance is good, and the service life of the bearing is prolonged.
According to tables 2 to 4, examples 4 and 5 are respectively compared with the data of examples 1 to 3, and preferably, the molar ratio of lithium hydroxide monohydrate to dodecahydroxystearic acid is selected to obtain the lithium composite grease with improved high temperature resistance, reduced loss at high temperature, good fluidity, and effectively improved high temperature resistance and fluidity.
According to tables 2 to 4, the data of examples 6 to 8 are compared with the data of example 3, respectively, the additive further comprises a specific antioxidant when the lithium complex base grease is prepared, the high-temperature loss of the prepared lithium complex base grease is reduced, the high-temperature loss is reduced, the lithium complex base grease is not easy to lose at high temperature, the high-temperature resistance is good, and the service life of the bearing is prolonged.
According to tables 2 to 4, the data of examples 9 and 10 are compared with the data of example 3, respectively, and a specific additive is further added when the lithium complex base grease is prepared, so that the high-temperature loss of the prepared lithium complex base grease is reduced, the high-temperature loss is reduced, the extreme pressure property is improved, the abrasion resistance is obviously improved, and meanwhile, the lithium complex base grease is not easy to lose at high temperature and has good high-temperature resistance.
According to tables 2 to 4, the data of examples 11 and 12 are compared with the data of example 3, and the specific heavy alkylbenzene sulfonate is selected to improve the low temperature resistance of the prepared composite lithium base grease, so that the composite lithium base grease has good fluidity in a low temperature environment, excellent pumping performance and excellent performance in a winter non-heat-preservation centralized oil supply system.
According to tables 2 to 4, the data of the examples 13 and 14 are respectively compared with the data of the example 3, and the petroleum sulfonate is compounded by the petroleum sodium sulfonate and the petroleum barium sulfonate according to a specific proportion, so that the high temperature resistance of the prepared composite lithium base grease is improved to a certain extent, the loss of the composite lithium base grease in a high temperature environment is obviously reduced, and the water spray resistance is obviously improved.
According to tables 2 to 4, the data of the embodiments 15 and 16 are respectively compared with the data of the embodiment 3, the synthetic sulfonate is compounded by the synthetic sodium sulfonate and the synthetic magnesium sulfonate according to a specific proportion, the low-temperature pumping performance of the prepared composite lithium base grease is improved, the composite lithium base grease is not easy to run off, the leakage amount is reduced, and the service life of the bearing is prolonged to a certain extent.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and these modifications or substitutions do not depart from the spirit of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. A composite lithium-based grease characterized by: the paint comprises the following components in parts by mass:
base oil: 70 to 80 parts;
lithium-based thickener: 10 to 15 parts;
additive: 5 to 10 parts;
the lithium-based thickening agent is prepared by saponifying dodecahydroxystearic acid, boric acid and lithium hydroxide monohydrate;
the additive comprises at least a heavy alkylbenzene sulfonate, a petroleum sulfonate, and a heptadecenyl imidazolinyl succinate.
2. The lithium complex grease as defined in claim 1 wherein: the composite lithium-based grease comprises the following components in parts by mass:
base oil: 72 to 78 parts;
lithium-based thickener: 12 to 14 parts;
additive: 6 to 8 parts;
the lithium-based thickening agent is prepared by saponifying dodecahydroxystearic acid, boric acid and lithium hydroxide monohydrate;
the additive at least comprises heavy alkylbenzene sulfonate, petroleum sulfonate and heptadecenyl imidazolinyl succinate.
3. The lithium complex grease as defined in any one of claims 1-2 wherein: the molar ratio of the lithium hydroxide monohydrate to the dodecahydroxystearic acid is 1: (1 to 1.2), wherein the molar ratio of the lithium hydroxide monohydrate to the boric acid is 1: (1 to 1.2).
4. The lithium complex grease as defined in any one of claims 1-2, wherein: the additive also comprises one or more of antioxidant, extreme pressure agent, tackifier and corrosion inhibitor.
5. The lithium complex grease as defined in claim 4, wherein: the antioxidant comprises one or more of 4,4' -methylenebis- (2, 6-di-tert-butylphenol), 2, 3-di-tert-butyl-p-cresol, N-phenyl-alpha-naphthylamine, dialkyl diphenylamine, dialkyl dithiocarbamate, benzotriazole-aldehyde-amine condensate and 2, 6-di (alkyl dithio) thiadiazole.
6. The lithium complex grease as defined in any one of claims 1-2 wherein: the additive also comprises one or more of zinc naphthenate, barium dinonylnaphthalene sulfonate, benzotriazole, synthetic sulfonate, alkyl phosphate imidazoline salt, oxidized petroleum ester barium soap, alkenyl succinate, lanolin magnesium soap, triethanolamine oleate and sulfonated castor oil.
7. The lithium complex grease as defined in any one of claims 1-2 wherein: the heavy alkylbenzene sulfonate comprises one or a mixture of more of heavy alkylbenzene sulfonate sodium, heavy alkylbenzene sulfonate barium and heavy alkylbenzene sulfonate magnesium.
8. The lithium complex grease as defined in any one of claims 1-2, wherein: the petroleum sulfonate is prepared from petroleum sodium sulfonate and petroleum barium sulfonate in a weight ratio of 1: (1 to 3) in a mass ratio.
9. The lithium complex grease as defined in any one of claims 1-2, wherein: the synthetic sulfonate is prepared from synthetic sodium sulfonate and synthetic magnesium sulfonate in a proportion of 1: (3 to 4) in a mass ratio.
10. The preparation method of the composite lithium-based grease is characterized by comprising the following steps:
adding base oil into a reaction container in the step 1), heating to 90-95 ℃, adding dodecahydroxystearic acid, and stirring to fully dissolve;
step 2), adding boric acid, preserving heat, continuously stirring and mixing;
step 3), adding lithium hydroxide monohydrate, continuing to preserve heat and carrying out reaction;
step 4), heating to 220-230 ℃, dehydrating and saponifying, and keeping the temperature constant at the highest refining temperature for 5-10min until the mixture is completely melted;
and step 5), cooling to 90-95 ℃, homogenizing, adding an additive, stirring, and grinding to obtain the composite lithium-based grease.
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| CN111500343A (en) * | 2020-04-21 | 2020-08-07 | 无锡中石油润滑脂有限责任公司 | Composite calcium sulfonate type railway wheel-rail lubricating grease and preparation method thereof |
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| GB1518332A (en) * | 1974-05-24 | 1978-07-19 | Texaco Ag | Lithium soap lubricating grease |
| CN102199471A (en) * | 2010-03-25 | 2011-09-28 | 中国石油化工股份有限公司 | Environmental protection type lubricating grease composition and method for preparing same |
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