CN114806688A - Composite calcium sulfonate-based lubricating grease for industrial robot and preparation method thereof - Google Patents
Composite calcium sulfonate-based lubricating grease for industrial robot and preparation method thereof Download PDFInfo
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- CN114806688A CN114806688A CN202210438388.8A CN202210438388A CN114806688A CN 114806688 A CN114806688 A CN 114806688A CN 202210438388 A CN202210438388 A CN 202210438388A CN 114806688 A CN114806688 A CN 114806688A
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- China
- Prior art keywords
- parts
- calcium sulfonate
- base oil
- lubricating grease
- agent
- Prior art date
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- 239000004519 grease Substances 0.000 title claims abstract description 67
- 239000011575 calcium Substances 0.000 title claims abstract description 64
- 229910052791 calcium Inorganic materials 0.000 title claims abstract description 64
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 title claims abstract description 64
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 title claims abstract description 62
- 230000001050 lubricating effect Effects 0.000 title claims abstract description 52
- 239000002131 composite material Substances 0.000 title claims abstract description 46
- 238000002360 preparation method Methods 0.000 title claims abstract description 13
- 239000002199 base oil Substances 0.000 claims abstract description 59
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 27
- 239000002253 acid Substances 0.000 claims abstract description 24
- 239000013556 antirust agent Substances 0.000 claims abstract description 15
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 claims abstract description 15
- 239000000920 calcium hydroxide Substances 0.000 claims abstract description 15
- 229910001861 calcium hydroxide Inorganic materials 0.000 claims abstract description 15
- 239000003963 antioxidant agent Substances 0.000 claims abstract description 12
- 230000003078 antioxidant effect Effects 0.000 claims abstract description 12
- 238000007670 refining Methods 0.000 claims abstract description 9
- 239000003831 antifriction material Substances 0.000 claims abstract description 8
- 239000002562 thickening agent Substances 0.000 claims abstract description 7
- 238000010438 heat treatment Methods 0.000 claims description 32
- 238000006243 chemical reaction Methods 0.000 claims description 28
- 238000003756 stirring Methods 0.000 claims description 24
- ULQISTXYYBZJSJ-UHFFFAOYSA-N 12-hydroxyoctadecanoic acid Chemical compound CCCCCCC(O)CCCCCCCCCCC(O)=O ULQISTXYYBZJSJ-UHFFFAOYSA-N 0.000 claims description 16
- DMBHHRLKUKUOEG-UHFFFAOYSA-N diphenylamine Chemical group C=1C=CC=CC=1NC1=CC=CC=C1 DMBHHRLKUKUOEG-UHFFFAOYSA-N 0.000 claims description 16
- 238000007127 saponification reaction Methods 0.000 claims description 16
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims description 15
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims description 15
- 239000000203 mixture Substances 0.000 claims description 12
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 11
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 11
- 229920013639 polyalphaolefin Polymers 0.000 claims description 11
- BDAGIHXWWSANSR-UHFFFAOYSA-N methanoic acid Natural products OC=O BDAGIHXWWSANSR-UHFFFAOYSA-N 0.000 claims description 10
- 238000013329 compounding Methods 0.000 claims description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 9
- 229940114072 12-hydroxystearic acid Drugs 0.000 claims description 8
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 claims description 8
- 239000004327 boric acid Substances 0.000 claims description 8
- 238000001816 cooling Methods 0.000 claims description 8
- 239000003921 oil Substances 0.000 claims description 8
- 229920002367 Polyisobutene Polymers 0.000 claims description 7
- 150000001336 alkenes Chemical class 0.000 claims description 7
- 230000009965 odorless effect Effects 0.000 claims description 7
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 claims description 7
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical group [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims description 6
- DKVNPHBNOWQYFE-UHFFFAOYSA-N carbamodithioic acid Chemical compound NC(S)=S DKVNPHBNOWQYFE-UHFFFAOYSA-N 0.000 claims description 6
- 239000012990 dithiocarbamate Substances 0.000 claims description 6
- 229910052750 molybdenum Inorganic materials 0.000 claims description 6
- 239000011733 molybdenum Substances 0.000 claims description 6
- FMNZBNCPTJEVDS-KVVVOXFISA-N 2-ethyl-2-(hydroxymethyl)propane-1,3-diol;(z)-octadec-9-enoic acid Chemical compound CCC(CO)(CO)CO.CCCCCCCC\C=C/CCCCCCCC(O)=O FMNZBNCPTJEVDS-KVVVOXFISA-N 0.000 claims description 5
- OSWFIVFLDKOXQC-UHFFFAOYSA-N 4-(3-methoxyphenyl)aniline Chemical compound COC1=CC=CC(C=2C=CC(N)=CC=2)=C1 OSWFIVFLDKOXQC-UHFFFAOYSA-N 0.000 claims description 5
- 235000011054 acetic acid Nutrition 0.000 claims description 5
- 239000010696 ester oil Substances 0.000 claims description 5
- 235000019253 formic acid Nutrition 0.000 claims description 5
- WXZMFSXDPGVJKK-UHFFFAOYSA-N pentaerythritol Chemical compound OCC(CO)(CO)CO WXZMFSXDPGVJKK-UHFFFAOYSA-N 0.000 claims description 5
- 229920002545 silicone oil Polymers 0.000 claims description 5
- ICKWICRCANNIBI-UHFFFAOYSA-N 2,4-di-tert-butylphenol Chemical group CC(C)(C)C1=CC=C(O)C(C(C)(C)C)=C1 ICKWICRCANNIBI-UHFFFAOYSA-N 0.000 claims description 4
- DKCPKDPYUFEZCP-UHFFFAOYSA-N 2,6-di-tert-butylphenol Chemical group CC(C)(C)C1=CC=CC(C(C)(C)C)=C1O DKCPKDPYUFEZCP-UHFFFAOYSA-N 0.000 claims description 4
- 229910000019 calcium carbonate Inorganic materials 0.000 claims description 4
- -1 calcium sulfonate salt Chemical class 0.000 claims description 4
- XBDQKXXYIPTUBI-UHFFFAOYSA-N dimethylselenoniopropionate Natural products CCC(O)=O XBDQKXXYIPTUBI-UHFFFAOYSA-N 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 4
- OWXJWNXGYIVLBV-UHFFFAOYSA-J molybdenum(4+) tetracarbamothioate Chemical compound C(N)([O-])=S.[Mo+4].C(N)([O-])=S.C(N)([O-])=S.C(N)([O-])=S OWXJWNXGYIVLBV-UHFFFAOYSA-J 0.000 claims description 4
- COTPAMORPWZHKE-UHFFFAOYSA-H trizinc;thiophosphate;thiophosphate Chemical compound [Zn+2].[Zn+2].[Zn+2].[O-]P([O-])([S-])=O.[O-]P([O-])([O-])=S COTPAMORPWZHKE-UHFFFAOYSA-H 0.000 claims description 4
- 150000003751 zinc Chemical class 0.000 claims description 4
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 3
- 239000000654 additive Substances 0.000 claims description 3
- 230000000996 additive effect Effects 0.000 claims description 3
- 229920001577 copolymer Polymers 0.000 claims description 3
- 239000002245 particle Substances 0.000 claims description 3
- 239000011574 phosphorus Substances 0.000 claims description 3
- 229910052698 phosphorus Inorganic materials 0.000 claims description 3
- 229920000193 polymethacrylate Polymers 0.000 claims description 3
- 229920005862 polyol Polymers 0.000 claims description 3
- 150000003077 polyols Chemical class 0.000 claims description 3
- 239000011593 sulfur Substances 0.000 claims description 3
- 229910052717 sulfur Inorganic materials 0.000 claims description 3
- XZZNDPSIHUTMOC-UHFFFAOYSA-N triphenyl phosphate Chemical compound C=1C=CC=CC=1OP(OC=1C=CC=CC=1)(=O)OC1=CC=CC=C1 XZZNDPSIHUTMOC-UHFFFAOYSA-N 0.000 claims description 3
- CBCKQZAAMUWICA-UHFFFAOYSA-N 1,4-phenylenediamine Chemical group NC1=CC=C(N)C=C1 CBCKQZAAMUWICA-UHFFFAOYSA-N 0.000 claims description 2
- 101100407030 Arabidopsis thaliana PAO2 gene Proteins 0.000 claims description 2
- JDRJCBXXDRYVJC-UHFFFAOYSA-N OP(O)O.N.N.N Chemical compound OP(O)O.N.N.N JDRJCBXXDRYVJC-UHFFFAOYSA-N 0.000 claims description 2
- 101100407037 Oryza sativa subsp. japonica PAO6 gene Proteins 0.000 claims description 2
- 101150092791 PAO4 gene Proteins 0.000 claims description 2
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical group OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 claims description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 2
- YSMRWXYRXBRSND-UHFFFAOYSA-N TOTP Chemical compound CC1=CC=CC=C1OP(=O)(OC=1C(=CC=CC=1)C)OC1=CC=CC=C1C YSMRWXYRXBRSND-UHFFFAOYSA-N 0.000 claims description 2
- 239000007866 anti-wear additive Substances 0.000 claims description 2
- 150000001565 benzotriazoles Chemical class 0.000 claims description 2
- CCDWGDHTPAJHOA-UHFFFAOYSA-N benzylsilicon Chemical compound [Si]CC1=CC=CC=C1 CCDWGDHTPAJHOA-UHFFFAOYSA-N 0.000 claims description 2
- 150000001735 carboxylic acids Chemical class 0.000 claims description 2
- 125000005266 diarylamine group Chemical group 0.000 claims description 2
- 150000002148 esters Chemical class 0.000 claims description 2
- 238000005984 hydrogenation reaction Methods 0.000 claims description 2
- 239000003112 inhibitor Substances 0.000 claims description 2
- 229910052500 inorganic mineral Inorganic materials 0.000 claims description 2
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims description 2
- 239000011707 mineral Substances 0.000 claims description 2
- 229920000435 poly(dimethylsiloxane) Polymers 0.000 claims description 2
- 229920001921 poly-methyl-phenyl-siloxane Polymers 0.000 claims description 2
- 235000019260 propionic acid Nutrition 0.000 claims description 2
- IUVKMZGDUIUOCP-BTNSXGMBSA-N quinbolone Chemical compound O([C@H]1CC[C@H]2[C@H]3[C@@H]([C@]4(C=CC(=O)C=C4CC3)C)CC[C@@]21C)C1=CCCC1 IUVKMZGDUIUOCP-BTNSXGMBSA-N 0.000 claims description 2
- 229920006395 saturated elastomer Polymers 0.000 claims description 2
- 239000000344 soap Substances 0.000 claims description 2
- APSBXTVYXVQYAB-UHFFFAOYSA-M sodium docusate Chemical group [Na+].CCCCC(CC)COC(=O)CC(S([O-])(=O)=O)C(=O)OCC(CC)CCCC APSBXTVYXVQYAB-UHFFFAOYSA-M 0.000 claims description 2
- 150000005846 sugar alcohols Polymers 0.000 claims description 2
- 150000003871 sulfonates Chemical class 0.000 claims description 2
- 150000004867 thiadiazoles Chemical class 0.000 claims description 2
- IVTHSFJXIARUFL-UHFFFAOYSA-N triazanium;thiophosphate Chemical compound [NH4+].[NH4+].[NH4+].[O-]P([O-])([O-])=S IVTHSFJXIARUFL-UHFFFAOYSA-N 0.000 claims description 2
- 125000005591 trimellitate group Chemical group 0.000 claims description 2
- 239000000126 substance Substances 0.000 abstract description 10
- 238000005516 engineering process Methods 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 238000005299 abrasion Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 abstract description 3
- 230000008569 process Effects 0.000 abstract description 3
- 238000012545 processing Methods 0.000 abstract description 3
- 238000002156 mixing Methods 0.000 abstract description 2
- 230000009467 reduction Effects 0.000 abstract description 2
- 238000010008 shearing Methods 0.000 abstract description 2
- 230000001131 transforming effect Effects 0.000 abstract 1
- 239000000306 component Substances 0.000 description 9
- 238000005259 measurement Methods 0.000 description 7
- 238000005303 weighing Methods 0.000 description 6
- 239000003638 chemical reducing agent Substances 0.000 description 5
- 230000000052 comparative effect Effects 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 239000013538 functional additive Substances 0.000 description 2
- 239000000314 lubricant Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000011056 performance test Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- FWVCSXWHVOOTFJ-UHFFFAOYSA-N 1-(2-chloroethylsulfanyl)-2-[2-(2-chloroethylsulfanyl)ethoxy]ethane Chemical compound ClCCSCCOCCSCCCl FWVCSXWHVOOTFJ-UHFFFAOYSA-N 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- QRUDEWIWKLJBPS-UHFFFAOYSA-N benzotriazole Chemical compound C1=CC=C2N[N][N]C2=C1 QRUDEWIWKLJBPS-UHFFFAOYSA-N 0.000 description 1
- 239000012964 benzotriazole Substances 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- VSGNNIFQASZAOI-UHFFFAOYSA-L calcium acetate Chemical compound [Ca+2].CC([O-])=O.CC([O-])=O VSGNNIFQASZAOI-UHFFFAOYSA-L 0.000 description 1
- 239000001639 calcium acetate Substances 0.000 description 1
- 235000011092 calcium acetate Nutrition 0.000 description 1
- 229960005147 calcium acetate Drugs 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 125000000524 functional group Chemical group 0.000 description 1
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 1
- 238000002329 infrared spectrum Methods 0.000 description 1
- 230000009347 mechanical transmission Effects 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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- 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
- C10M169/04—Mixtures of base-materials and additives
- C10M169/048—Mixtures of base-materials and additives the additives being a mixture of compounds of unknown or incompletely defined constitution, non-macromolecular and macromolecular compounds
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- 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
- C10M2215/02—Amines, e.g. polyalkylene polyamines; Quaternary amines
- C10M2215/06—Amines, e.g. polyalkylene polyamines; Quaternary amines having amino groups bound to carbon atoms of six-membered aromatic rings
- C10M2215/064—Di- and triaryl amines
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- 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
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- C10M2219/00—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions
- C10M2219/02—Sulfur-containing compounds obtained by sulfurisation with sulfur or sulfur-containing compounds
- C10M2219/022—Sulfur-containing compounds obtained by sulfurisation with sulfur or sulfur-containing compounds of hydrocarbons, e.g. olefines
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- 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
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- C10M2219/00—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions
- C10M2219/06—Thio-acids; Thiocyanates; Derivatives thereof
- C10M2219/062—Thio-acids; Thiocyanates; Derivatives thereof having carbon-to-sulfur double bonds
- C10M2219/066—Thiocarbamic type compounds
- C10M2219/068—Thiocarbamate metal salts
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- C10M2219/00—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions
- C10M2219/10—Heterocyclic compounds containing sulfur, selenium or tellurium compounds in the ring
- C10M2219/104—Heterocyclic compounds containing sulfur, selenium or tellurium compounds in the ring containing sulfur and carbon with nitrogen or oxygen in the ring
- C10M2219/106—Thiadiazoles
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- C10M2223/00—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions
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- C10M2223/04—Phosphate esters
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- C10M2223/02—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions having no phosphorus-to-carbon bonds
- C10M2223/04—Phosphate esters
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- C10M2223/049—Phosphite
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- 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
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- C10M2229/0415—Siloxanes with specific structure containing aliphatic substituents used as base material
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- C10M2229/04—Siloxanes with specific structure
- C10M2229/042—Siloxanes with specific structure containing aromatic substituents
- C10M2229/0425—Siloxanes with specific structure containing aromatic substituents used as base material
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- 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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- C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
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Abstract
The invention discloses a special composite calcium sulfonate-based lubricating grease for an industrial robot and a preparation method thereof, and belongs to the technical field of lubricating grease. The lubricating grease comprises the following components in parts by weight: 55-70 parts of base oil; 25-40 parts of an inorganic thickening agent; 1-5 parts of a transforming agent; 1-5 parts of calcium hydroxide; 1-5 parts of composite acid; 2-6 parts of tackifier, 1-5 parts of antifriction agent, 1-5 parts of extreme pressure antiwear agent, 0.5-2 parts of antirust agent and 0.5-2 parts of antioxidant; the bearing lubricating grease with high dropping point and long service life is prepared by the processes of phase inversion, refining, blending and the like. The invention reduces the production cost and simplifies the processing technology; the preparation process is green, and the use of volatile substances is reduced; the application temperature range is wide, and the applicable temperature is-30-220 ℃; and the composite material has excellent shearing resistance, extreme pressure abrasion resistance and friction reduction performance, reduces noise pollution when equipment is used, and obviously prolongs the service life of the robot.
Description
Technical Field
The invention relates to the technical field of lubricating grease preparation, and particularly relates to composite calcium sulfonate-based lubricating grease for industrial robots and a preparation method thereof.
Background
In smart manufacturing or green manufacturing equipment, the main thing that is developing faster is industrial robots. Since 2015, the industrial robot industry in China has been rapidly developed, more than 40 robot industry parks are established, more than 2000 robot companies of various types are registered, and the quantity of the robot industry parks exceeds that of other countries comprehensively. Due to the rise of the brand of the domestic industrial robot, the price advantage of foreign industrial robot companies can be broken, and the purchasing desire of potential customers is stimulated. The global industrial robot sales in 2015 were about 45.6 million, and the year-on-year growth was 27%. By 2021, the global sales of industrial robots was about 65.3 ten thousand, and by 2025, china was expected to realize an upgrade in the manufacturing industry. The sales of robots in the major global market are increasing, half of them are from asia, and chinese performance is particularly prominent.
The industrial robot mainly comprises four major components, namely a body, a speed reducer, a servo system and a controller, wherein a lubricating component, namely the speed reducer, also called as a joint of the robot, is one of core components of the robot, accounts for one third of the overall cost of the robot, controls the force output and the operation precision of the industrial robot, and the quality of the performance of the industrial robot directly influences the quality of the industrial robot. The speed reducer is a mechanical transmission unit widely adopted by an industrial robot, is assembled with the servo motor, and can accurately reduce the output rotating speed of the servo motor to the rotating speed required by each joint part, so that enough rigidity and torque are obtained, and the mechanical arm is driven to run. At present, lubricating grease for industrial robot reducers has the problems of poor extreme pressure and wear resistance and no high temperature resistance, and has the defects of easy softening loss and oxidative deterioration at high temperature, incapability of playing a lubricating role at low temperature and the like.
In order to solve the problems, the applicant introduces some molecules containing polar functional groups and additive formula systems into the lubricating grease aiming at the unique lubricating mode of the industrial robot, so that the stability of the colloid structure, the film forming capability and the lubricating performance of the lubricating grease are enhanced, the service life of equipment is prolonged, energy is saved, and the level of the lubricating grease at home and abroad is improved.
Disclosure of Invention
In view of the defects in the prior art, the invention aims to provide a composite calcium sulfonate-based lubricating grease for industrial robots and a preparation method thereof.
In order to achieve the technical purpose, the inventor combines the research experience of the grease for years, and finally obtains the following technical scheme through a large amount of experimental exploration and research: the composite calcium sulfonate-based lubricating grease for the industrial robot is prepared from the following components in parts by weight:
the base oil is refined hydrogenated base oil or synthetic base oil, and has kinematic viscosity of 58-65mm at 40 deg.C 2 (s) density of 0.82-0.89g/cm 3 ；
The refined hydrogenation base oil is selected from one of the following: n oil, SN oil, mineral-based hydrogenated base oil with high viscosity index;
the synthetic base oil is selected from one or more than two blend oils as follows: poly-alpha-olefins, synthetic ester oils, silicone oils;
the polyalphaolefin is selected from one or more of low-viscosity PAO2, PAO4, PAO6 and PAO8, and the synthetic ester oil is selected from one of trimethylolpropane oleate, pentaerythritol saturated ester and trimellitate; the silicone oil is one of methyl silicone oil and phenyl methyl silicone oil.
Further preferably, the calcium sulfonate complex grease for industrial robots as described above, wherein the inorganic thickener used is a high base number calcium sulfonate salt with a total base number of 380-420mgKOH/g, and contains calcium carbonate in a vaterite crystal form with a particle size of 10-40 μm.
Further preferably, the calcium sulfonate complex grease for industrial robots as described above, wherein the conversion agent used is a mixture of a polyhydric alcohol, a low molecular acid and water in a ratio of 1: (0.8-2): (10-15), wherein the polyol is selected from one or more of the following: ethylene glycol, glycerol, pentaerythritol; the low molecular acid is selected from one or more than two of the following: formic acid, acetic acid, propionic acid. The conversion agent is still further preferably a polyol, a low molecular acid and water in a ratio of 1: (1-1.5): (12-13) in terms of weight ratio.
Further preferably, the calcium sulfonate complex grease for industrial robots as described above, wherein the complex acid used is a complex acid prepared from 12-hydroxystearic acid and boric acid according to the following (1.2 to 1.5): 1, in a weight ratio.
Further preferably, the calcium sulfonate complex grease for industrial robots as described above, wherein the thickener used is selected from one of the following: polyisobutylene PIB high molecular material, polymethacrylate PMA type high molecular material and ethylene-propylene copolymer.
Further preferably, the calcium sulfonate complex grease for industrial robots as described above, wherein the friction reducing additive used is selected from one or a mixture of two of zinc thiophosphate salt and molybdenum thiocarbamate salt; the zinc thiophosphate salt is alkaline zinc salt T203 of sulfur, phosphorus and dioctyl; the molybdenum thiocarbamate salt is molybdenum diisooctyl dithiocarbamate.
Further preferably, the calcium sulfonate complex grease for industrial robots as described above, wherein the extreme pressure antiwear additive used is selected from one or two of the following: odorless sulfurized olefin, phosphite ammonium salt, thiophosphate ammonium salt, tricresyl phosphate, and triphenyl phosphate.
Further preferably, the calcium sulfonate complex grease for industrial robots as described above, wherein the rust inhibitor used is one selected from the group consisting of: sulfonates, carboxylic acids and their soaps, thiadiazoles, benzotriazoles.
Further preferably, the calcium sulfonate complex grease for industrial robots as described above, wherein the antioxidant used is selected from one of the following: secondary diarylamine, N-phenylaniline, alkyl diphenylamine, p-phenylenediamine, phenol, 2, 4-di-tert-butylphenol and 2, 6-di-tert-butylphenol.
In addition, the invention also provides a preparation method of the composite calcium sulfonate-based lubricating grease for the industrial robot, which comprises the following steps:
(1) putting an inorganic thickening agent, 55-70% of base oil and a conversion agent into a reaction kettle, stirring and heating to 75-90 ℃, and keeping the temperature for 60-120 min to complete the phase inversion of the lubricating grease;
(2) after phase inversion, heating the material to 90-100 ℃, adding the calcium hydroxide emulsion and the composite acid in sequence for compounding, and carrying out saponification constant-temperature reaction for 90-120 min;
(3) after saponification, heating to 180-200 ℃ for refining, then cooling to 80-110 ℃, adding an extreme pressure antiwear agent, an antifriction agent, a tackifier, an antirust agent and an antioxidant, stirring, and then homogenizing;
(4) adding the rest base oil, stirring and heating to 130-150 ℃, and keeping the temperature for 15-25min to obtain the composite calcium sulfonate-based lubricating grease for the industrial robot.
Compared with the prior art, the invention provides a preparation technology of the composite calcium sulfonate-based lubricating grease for the industrial robot, which adopts refined hydrogenated base oil or synthetic base oil, thickened inorganic high-base number calcium sulfonate, and various functional additives to prepare the composite calcium sulfonate-based lubricating grease through the processes of phase inversion, compounding, refining, blending and the like, and the excellent performance of the composite calcium sulfonate-based lubricating grease is expressed as follows:
1) the performance of the base oil has little influence on the performance of a final product, the base oil can be selected from a plurality of types, and the base oil can be refined hydrogenated base oil, or synthetic base oil (PAO, synthetic ester oil and silicone oil), or the compound of a plurality of types of synthetic base oil, so that the lubricating grease with excellent performance can be prepared, thereby greatly reducing the cost and simplifying the processing technology.
2) The preparation process is green, and the phase inversion of the compound calcium sulfonate basically needs some low molecular acid or low-boiling active alcohol, so that the sulfonate of the Newtonian body is changed into the sulfonate of the non-Newtonian body, thereby having certain pollution to the environment, but the invention reduces or does not use volatile substances, thereby avoiding the environmental pollution and the damage to operators, and the whole process is green and environment-friendly;
3) the base oil is refined hydrogenated base oil or synthetic base oil, the high and low temperature performance is excellent, and the pumping performance of the composite calcium sulfonate-based lubricating grease is very outstanding, so that the composite calcium sulfonate-based lubricating grease is used as a robot lubricant, the use temperature range is wide, and the applicable temperature is-30-220 ℃.
4) The composite calcium sulfonate lubricating grease has a 10-ten-thousand shear cone penetration change value of less than 10, has excellent shear resistance, and can reduce noise pollution when equipment is used.
5) The composite calcium sulfonate lubricating grease contains a large amount of nano calcium carbonate, calcium acetate and the like, has excellent extreme pressure wear resistance and friction reduction performance, and has a friction coefficient of 0.062 at 100 ℃ under the load of 400N.
6) The composite calcium sulfonate-based lubricating grease has very good antirust performance and wear resistance, and the functional additive is prepared to obviously prolong the service life of the robot and reduce the abrasion and equipment failure, thereby reducing the use cost.
Drawings
FIG. 1: SRV fretting wear test plots for examples 1 and 3.
FIG. 2: IR spectrum of the product of example 1.
Detailed Description
The present invention will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the invention, but are not intended to limit the invention in any way. It should be noted that variations and modifications can be made by persons skilled in the art without departing from the spirit of the invention. All falling within the scope of the present invention.
It should be noted that the calcium sulfonate with high base number used in the following examples has a total base number of 380-420mgKOH/g, and contains calcium carbonate in the form of vaterite with a particle size of 10-40 μm.
Example 1
A composite calcium sulfonate-based lubricating grease for industrial robots is prepared by the following steps:
s1, weighing the following components in parts by weight: 30 parts of high-base-number calcium sulfonate, 500N 44 parts of refined hydrogenated base oil, 3 parts of a conversion agent (0.2 part of glycerol, 0.3 part of acetic acid and 2.5 parts of water), 1 part of calcium hydroxide, 2 parts of composite acid (1.2 parts of 12-hydroxystearic acid and 0.8 part of boric acid), 3 parts of polyisobutylene, 1.5 parts of odorless sulfurized olefin, 2 parts of molybdenum diisooctyl dithiocarbamate, T7050.5 parts of an antirust agent and 1 part of N-phenylaniline;
s2, taking the refined hydrogenated base oil 500N as base oil;
s3, putting the mixture of the high-base-number calcium sulfonate, the base oil and the converting agent into a reaction kettle, stirring and heating to 75-90 ℃, and keeping the temperature for 60-90 min to complete the phase inversion of the lubricating grease;
s4, heating to 90-100 ℃, adding calcium hydroxide and composite acid for compounding, and carrying out saponification constant-temperature reaction for 90-120 min;
s5, after saponification, heating to 180-200 ℃ for refining, then cooling to 80-110 ℃, adding an extreme pressure antiwear agent, an antifriction agent, a tackifier, an antirust agent, an antioxidant and the like, stirring, and then homogenizing; adding 500N 20 parts of refined hydrogenated base oil, stirring and heating to 140 ℃, and keeping the temperature for 20min to obtain the composite calcium sulfonate-based lubricating grease for the industrial robot. The results of the measurement of each typical physical and chemical index are shown in Table 1.
Example 2
A composite calcium sulfonate-based lubricating grease for industrial robots is prepared by the following steps:
s1, weighing the following components in parts by weight: 34 parts of high-base-number calcium sulfonate, 500N 41 parts of refined hydrogenated base oil, 3 parts of a conversion agent (0.2 part of glycerol, 0.2 part of formic acid and 2.6 parts of water), 1.3 parts of calcium hydroxide, 2.2 parts of composite acid (1.2 parts of 12-hydroxystearic acid and 1 part of boric acid), 2 parts of an ethylene-propylene copolymer, 1.5 parts of odorless sulfurized olefin, 2 parts of molybdenum diisooctyl dithiocarbamate, 7050.5 parts of an antirust agent T and 0.5 part of N-phenylaniline;
s2, taking the refined hydrogenated base oil 500N as base oil;
s3, putting the mixture of the high-base-number calcium sulfonate, the base oil and the converting agent into a reaction kettle, stirring and heating to 75-90 ℃, and keeping the temperature for 60-90 min to complete the phase inversion of the lubricating grease;
s4, heating to 90-100 ℃, adding calcium hydroxide and composite acid for compounding, and carrying out saponification constant-temperature reaction for 90-120 min;
s5, after saponification, heating to 180-200 ℃ for refining, then cooling to 80-110 ℃, adding an extreme pressure antiwear agent, an antifriction agent, a tackifier, an antirust agent, an antioxidant and the like, stirring, and then homogenizing; adding 500N 24 parts of refined hydrogenated base oil, stirring and heating to 140 ℃, and keeping the temperature for 20min to obtain the composite calcium sulfonate-based lubricating grease for the industrial robot. The results of the measurement of each typical physical and chemical index are shown in Table 1.
Example 3
A composite calcium sulfonate-based lubricating grease for industrial robots is prepared by the following steps:
s1, weighing the following components in parts by weight: 35 parts of high-base-number calcium sulfonate, 849 parts of synthetic base oil PAO, 3 parts of a conversion agent (0.2 part of ethylene glycol, 0.3 part of acetic acid and 2.5 parts of water), 1.3 parts of calcium hydroxide, 2 parts of composite acid (1.2 parts of 12-hydroxystearic acid and 0.8 part of boric acid), 3 parts of polyisobutylene, 1.5 parts of odorless sulfurized olefin, T2032 parts of sulfur-phosphorus dioctyl alkaline zinc salt, T7050.5 parts of an antirust agent and 0.7 part of 2, 6-di-tert-butylphenol;
s2, taking synthetic base oil PAO8 as base oil;
s3, putting the mixture of the high-base-number calcium sulfonate, the base oil and the converting agent into a reaction kettle, stirring and heating to 75-90 ℃, and keeping the temperature for 60-90 min to complete the phase inversion of the lubricating grease;
s4, heating to 90-100 ℃, adding calcium hydroxide and composite acid for compounding, and carrying out saponification constant-temperature reaction for 90-120 min;
s5, after saponification, heating to 180-200 ℃ for refining, then cooling to 80-110 ℃, adding an extreme pressure antiwear agent, an antifriction agent, a tackifier, an antirust agent, an antioxidant and the like, stirring, and then homogenizing; adding 821 parts of synthetic base oil PAO, stirring and heating to 140 ℃, and keeping the temperature for 20min to obtain various typical physical and chemical index measurement results of the composite calcium sulfonate-based lubricating grease for the industrial robot shown in table 1.
Example 4
A composite calcium sulfonate-based lubricating grease for industrial robots is prepared by the following steps:
s1, weighing the following components in parts by weight: 29 parts of high-base-number calcium sulfonate, 844 parts of synthetic base oil PAO, 3 parts of a conversion agent (0.2 part of glycol, 0.2 part of formic acid and 2.6 parts of water), 1 part of calcium hydroxide, 1.8 parts of composite acid (1 part of 12-hydroxystearic acid and 0.8 part of boric acid), 3 parts of polyisobutylene, 1.5 parts of odorless sulfurized olefin, 2033 parts of alkaline zinc salt of sulfur and phosphorus dioctyl, 7050.7 parts of an antirust agent and 1 part of 2, 6-di-tert-butylphenol;
s2, taking synthetic base oil PAO8 as base oil;
s3, putting the mixture of the high-base-number calcium sulfonate, the base oil and the converting agent into a reaction kettle, stirring and heating to 75-90 ℃, and keeping the temperature for 60-90 min to complete the phase inversion of the lubricating grease;
s4, heating to 90-100 ℃, adding calcium hydroxide and composite acid for compounding, and carrying out saponification constant-temperature reaction for 90-120 min;
s5, after saponification, heating to 180-200 ℃ for refining, then cooling to 80-110 ℃, adding an extreme pressure antiwear agent, an antifriction agent, a tackifier, an antirust agent, an antioxidant and the like, stirring, and then homogenizing; adding 820 parts of synthetic base oil PAO, stirring and heating to 140 ℃, and keeping the temperature for 20min to obtain various typical physical and chemical index measurement results of the composite calcium sulfonate-based lubricating grease for the industrial robot, wherein the typical physical and chemical index measurement results are shown in table 1.
Example 5
A composite calcium sulfonate-based lubricating grease for industrial robots is prepared by the following steps:
s1, weighing the following components in parts by weight: 30 parts of high-base-number calcium sulfonate, 824 parts of synthetic base oil PAO, 20 parts of trimethylolpropane oleate, 3 parts of a conversion agent (0.2 part of pentaerythritol, 0.2 part of formic acid and 2.6 parts of water), 1 part of calcium hydroxide, 1.8 parts of composite acid (1 part of 12-hydroxystearic acid and 0.8 part of boric acid), 3 parts of polymethacrylate, 1.5 parts of triphenyl phosphate, 2 parts of molybdenum diisooctyl dithiocarbamate, 0.7 part of benzotriazole and 1 part of N-phenyl aniline;
s2, taking synthetic base oil PAO8 and trimethylolpropane oleate as base oil;
s3, putting a mixture of high-base-number calcium sulfonate, synthetic base oil PAO8, trimethylolpropane oleate and a conversion agent into a reaction kettle, stirring and heating to 75-90 ℃, and keeping the temperature for 60-90 min to complete the phase inversion of the lubricating grease;
s4, heating to 90-100 ℃, adding calcium hydroxide and composite acid for compounding, and carrying out saponification constant-temperature reaction for 90-120 min;
s5, after saponification, heating to 180-200 ℃ for refining, then cooling to 80-90 ℃, adding an extreme pressure antiwear agent, an antifriction agent, a tackifier, an antirust agent, an antioxidant and the like, stirring, and then homogenizing; adding 820 parts of synthetic base oil PAO, stirring and heating to 140 ℃, and keeping the temperature for 20min to obtain the composite calcium sulfonate-based lubricating grease for the industrial robot. The results of the measurement of each typical physical and chemical index are shown in Table 1.
Comparative example 1
A composite calcium sulfonate-based lubricating grease for industrial robots is prepared in the same manner as in example 1, but a friction reducer (molybdenum diisooctyl dithiocarbamate) is not added in a lubricating grease formula, so that the mass ratio of an antirust agent (T705) to an antioxidant (N-phenylaniline) is improved, and the preparation method specifically comprises the following steps:
s1, weighing the following components in parts by weight: 30 parts of high-base-number calcium sulfonate, 500N 44 parts of refined hydrogenated base oil, 3 parts of a conversion agent (0.2 part of glycerol, 0.3 part of acetic acid and 2.5 parts of water), 1 part of calcium hydroxide, 2 parts of composite acid (1.2 parts of 12-hydroxystearic acid and 0.8 part of boric acid), 3 parts of polyisobutylene, 2.5 parts of odorless sulfurized olefin, T7050.9 parts of an antirust agent and 1.6 parts of N-phenylaniline;
s2, taking the refined hydrogenated base oil 500N as base oil;
s3, putting the mixture of the high-base-number calcium sulfonate, the base oil and the converting agent into a reaction kettle, stirring and heating to 75-90 ℃, and keeping the temperature for 60-90 min to complete the phase inversion of the lubricating grease;
s4, heating to 90-100 ℃, adding calcium hydroxide and composite acid for compounding, and carrying out saponification constant-temperature reaction for 90-120 min;
s5, after saponification, heating to 180-200 ℃, cooling to 80-110 ℃, adding an extreme pressure antiwear agent, a tackifier, an antirust agent, an antioxidant and the like, stirring, and homogenizing; adding 500N 20 parts of refined hydrogenated base oil, stirring and heating to 140 ℃, and keeping the temperature for 20min to obtain the composite calcium sulfonate-based lubricating grease for the industrial robot. The results of the measurement of each typical physical and chemical index are shown in Table 1.
The performance test data for examples 1-5 and comparative example 1 are shown in Table 1:
table 1 performance test data for the examples
The performance of the base oil has little influence on the performance of the grease, so that the cost is reduced and the processing technology is simplified; the preparation process is green, and the use of volatile substances is reduced; the application temperature range is wide, and the applicable temperature is-30-220 ℃; excellent shearing resistance, and reduced noise pollution when the equipment is used; excellent extreme pressure antiwear and antifriction performance, and friction coefficient of the lubricant is 0.062 at 100 ℃ under the load of 400N; the service life of the robot and the high-speed bearing is prolonged remarkably, and abrasion and equipment faults are reduced, so that the use cost is reduced.
The foregoing description of specific embodiments of the present invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes or modifications may be made by one skilled in the art within the scope of the appended claims without departing from the spirit of the invention. The embodiments and features of the embodiments of the present application may be combined with each other arbitrarily without conflict.
Claims (10)
1. The composite calcium sulfonate-based lubricating grease for the industrial robot is characterized by being prepared from the following components in parts by weight:
the base oil is refined hydrogenated base oil or synthetic base oil, and has kinematic viscosity of 58-65mm at 40 deg.C 2 S, density of 0.82-0.89g/cm 3 ；
The refined hydrogenation base oil is selected from one of the following: n oil, SN oil, mineral-based hydrogenated base oil with high viscosity index;
the synthetic base oil is selected from one or more than two blend oils as follows: poly-alpha-olefins, synthetic ester oils, silicone oils;
the polyalphaolefin is selected from one or more of low-viscosity PAO2, PAO4, PAO6 and PAO8, and the synthetic ester oil is selected from one of trimethylolpropane oleate, pentaerythritol saturated ester and trimellitate; the silicone oil is one of methyl silicone oil and phenyl methyl silicone oil.
2. The complex calcium sulfonate based grease for industrial robots as claimed in claim 1, wherein the inorganic thickener is a high base number calcium sulfonate salt with a total base number of 380-420mgKOH/g, and the calcium carbonate contained therein is in the form of vaterite with a particle size of 10-40 μm.
3. The calcium sulfonate complex grease for industrial robots as claimed in claim 1 wherein the conversion agent is a mixture of polyhydric alcohol, low molecular acid and water in a ratio of 1: (0.8-2): (10-15), wherein the polyol is selected from one or more of the following: ethylene glycol, glycerol, pentaerythritol; the low molecular acid is selected from one or more than two of the following: formic acid, acetic acid, propionic acid.
4. The calcium sulfonate complex grease for industrial robots according to claim 1, characterized in that: the complex acid is prepared from 12-hydroxystearic acid and boric acid according to the following ratio of (1.2-1.5): 1, in a weight ratio.
5. The calcium sulfonate complex grease for industrial robots as claimed in claim 1, wherein the thickener is one selected from the group consisting of: polyisobutylene, polymethacrylate, ethylene-propylene copolymer.
6. The special calcium sulfonate complex grease for industrial robots and high-speed bearings according to claim 1, wherein the friction reducing additive is selected from one or a mixture of two of zinc thiophosphate and molybdenum thiocarbamate; the zinc thiophosphate salt is alkaline zinc salt T203 of sulfur, phosphorus and dioctyl; the molybdenum thiocarbamate salt is molybdenum diisooctyl dithiocarbamate.
7. The calcium sulfonate complex grease for industrial robots according to claim 1, wherein the extreme pressure antiwear additive is one or two selected from the group consisting of: odorless sulfurized olefin, phosphite ammonium salt, thiophosphate ammonium salt, tricresyl phosphate, and triphenyl phosphate.
8. The calcium sulfonate complex grease for industrial robots as claimed in claim 1, wherein the rust inhibitor is selected from one of the following: sulfonates, carboxylic acids and their soaps, thiadiazoles, benzotriazoles.
9. The calcium sulfonate complex grease for industrial robots as claimed in claim 1, wherein the antioxidant is selected from the group consisting of: secondary diarylamine, N-phenylaniline, alkyl diphenylamine, p-phenylenediamine, phenol, 2, 4-di-tert-butylphenol and 2, 6-di-tert-butylphenol.
10. The preparation method of the calcium sulfonate complex grease for industrial robots according to claim 1, characterized by comprising the steps of:
(1) putting an inorganic thickening agent, 55-70% of base oil and a conversion agent into a reaction kettle, stirring and heating to 75-90 ℃, and keeping the temperature for 60-120 min to complete the phase inversion of the lubricating grease;
(2) after phase inversion, heating the material to 90-100 ℃, adding calcium hydroxide and composite acid in sequence for compounding, and carrying out saponification constant-temperature reaction for 90-120 min;
(3) after saponification, heating to 180-200 ℃ for refining, then cooling to 80-110 ℃, adding an extreme pressure antiwear agent, an antifriction agent, a tackifier, an antirust agent and an antioxidant, stirring, and then homogenizing;
(4) adding the rest base oil, stirring and heating to 130-150 ℃, and keeping the temperature for 15-25min to obtain the composite calcium sulfonate-based lubricating grease for the industrial robot.
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