CN116218586A - Lubricating oil and preparation method thereof - Google Patents
Lubricating oil and preparation method thereof Download PDFInfo
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- CN116218586A CN116218586A CN202310050620.5A CN202310050620A CN116218586A CN 116218586 A CN116218586 A CN 116218586A CN 202310050620 A CN202310050620 A CN 202310050620A CN 116218586 A CN116218586 A CN 116218586A
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- Prior art keywords
- lubricating oil
- parts
- calcium borate
- stearic acid
- modified calcium
- Prior art date
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- 239000010687 lubricating oil Substances 0.000 title claims abstract description 43
- 238000002360 preparation method Methods 0.000 title abstract description 12
- VLCLHFYFMCKBRP-UHFFFAOYSA-N tricalcium;diborate Chemical class [Ca+2].[Ca+2].[Ca+2].[O-]B([O-])[O-].[O-]B([O-])[O-] VLCLHFYFMCKBRP-UHFFFAOYSA-N 0.000 claims abstract description 37
- 235000021355 Stearic acid Nutrition 0.000 claims abstract description 18
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 claims abstract description 18
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 claims abstract description 18
- 239000008117 stearic acid Substances 0.000 claims abstract description 18
- CSEWAUGPAQPMDC-UHFFFAOYSA-N 2-(4-aminophenyl)acetic acid Chemical compound NC1=CC=C(CC(O)=O)C=C1 CSEWAUGPAQPMDC-UHFFFAOYSA-N 0.000 claims abstract description 17
- 239000002199 base oil Substances 0.000 claims abstract description 15
- 229920000193 polymethacrylate Polymers 0.000 claims abstract description 11
- 239000003963 antioxidant agent Substances 0.000 claims abstract description 10
- 230000003078 antioxidant effect Effects 0.000 claims abstract description 10
- 239000003599 detergent Substances 0.000 claims abstract description 9
- 229910052751 metal Inorganic materials 0.000 claims abstract description 9
- 239000002184 metal Substances 0.000 claims abstract description 9
- 239000013530 defoamer Substances 0.000 claims abstract description 6
- 239000011259 mixed solution Substances 0.000 claims description 15
- 239000002244 precipitate Substances 0.000 claims description 11
- 238000002156 mixing Methods 0.000 claims description 10
- 239000011575 calcium Substances 0.000 claims description 9
- 238000001035 drying Methods 0.000 claims description 9
- 239000000243 solution Substances 0.000 claims description 9
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 8
- 239000012153 distilled water Substances 0.000 claims description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 8
- 238000001027 hydrothermal synthesis Methods 0.000 claims description 7
- 238000003756 stirring Methods 0.000 claims description 7
- 239000003921 oil Substances 0.000 claims description 6
- 238000005406 washing Methods 0.000 claims description 5
- 229920002367 Polyisobutene Polymers 0.000 claims description 4
- ZHALDANPYXAMJF-UHFFFAOYSA-N octadecanoate;tris(2-hydroxyethyl)azanium Chemical compound OCC[NH+](CCO)CCO.CCCCCCCCCCCCCCCCCC([O-])=O ZHALDANPYXAMJF-UHFFFAOYSA-N 0.000 claims description 4
- 229920013639 polyalphaolefin Polymers 0.000 claims description 4
- 229940029614 triethanolamine stearate Drugs 0.000 claims description 4
- GWFGDXZQZYMSMJ-UHFFFAOYSA-N Octadecansaeure-heptadecylester Natural products CCCCCCCCCCCCCCCCCOC(=O)CCCCCCCCCCCCCCCCC GWFGDXZQZYMSMJ-UHFFFAOYSA-N 0.000 claims description 3
- CEGOLXSVJUTHNZ-UHFFFAOYSA-K aluminium tristearate Chemical compound [Al+3].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O CEGOLXSVJUTHNZ-UHFFFAOYSA-K 0.000 claims description 3
- 229940063655 aluminum stearate Drugs 0.000 claims description 3
- 229910052788 barium Inorganic materials 0.000 claims description 3
- DSAJWYNOEDNPEQ-UHFFFAOYSA-N barium atom Chemical compound [Ba] DSAJWYNOEDNPEQ-UHFFFAOYSA-N 0.000 claims description 3
- NKBWPOSQERPBFI-UHFFFAOYSA-N octadecyl octadecanoate Chemical compound CCCCCCCCCCCCCCCCCCOC(=O)CCCCCCCCCCCCCCCCC NKBWPOSQERPBFI-UHFFFAOYSA-N 0.000 claims description 3
- 239000003208 petroleum Substances 0.000 claims description 3
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 claims description 3
- 239000002518 antifoaming agent Substances 0.000 claims description 2
- 229910052791 calcium Inorganic materials 0.000 claims description 2
- 229920001577 copolymer Polymers 0.000 claims description 2
- 238000010438 heat treatment Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 claims description 2
- 239000002480 mineral oil Substances 0.000 claims description 2
- 235000010446 mineral oil Nutrition 0.000 claims description 2
- 230000001105 regulatory effect Effects 0.000 claims description 2
- 230000003301 hydrolyzing effect Effects 0.000 abstract description 8
- 230000001050 lubricating effect Effects 0.000 abstract description 5
- 230000000052 comparative effect Effects 0.000 description 14
- 239000000654 additive Substances 0.000 description 5
- 239000000203 mixture Substances 0.000 description 4
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 3
- 230000000996 additive effect Effects 0.000 description 3
- 239000006185 dispersion Substances 0.000 description 3
- 229910017604 nitric acid Inorganic materials 0.000 description 3
- BTBUEUYNUDRHOZ-UHFFFAOYSA-N Borate Chemical compound [O-]B([O-])[O-] BTBUEUYNUDRHOZ-UHFFFAOYSA-N 0.000 description 2
- 230000002776 aggregation Effects 0.000 description 1
- 238000004220 aggregation Methods 0.000 description 1
- ZGUNAGUHMKGQNY-UHFFFAOYSA-N alpha-phenylglycine Chemical compound OC(=O)C(N)C1=CC=CC=C1 ZGUNAGUHMKGQNY-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006065 biodegradation reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 230000009965 odorless effect Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
Classifications
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- 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
- 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
-
- 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
- C10M2201/14—Inorganic compounds or elements as ingredients in lubricant compositions inorganic compounds surface treated with organic compounds
-
- 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
- C10M2203/00—Organic non-macromolecular hydrocarbon compounds and hydrocarbon fractions as ingredients in lubricant compositions
- C10M2203/10—Petroleum or coal fractions, e.g. tars, solvents, bitumen
- C10M2203/1006—Petroleum or coal fractions, e.g. tars, solvents, bitumen used as base material
-
- 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
- C10M2205/00—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions
- C10M2205/02—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing acyclic monomers
- C10M2205/022—Ethene
-
- 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
- C10M2205/00—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions
- C10M2205/02—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing acyclic monomers
- C10M2205/026—Butene
-
- 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
- C10M2205/00—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions
- C10M2205/02—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing acyclic monomers
- C10M2205/028—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing acyclic monomers containing aliphatic monomers having more than four carbon atoms
- C10M2205/0285—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing acyclic monomers containing aliphatic monomers having more than four carbon atoms used as base material
-
- 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
- C10M2207/126—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 monocarboxylic
-
- 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
- C10M2207/28—Esters
- C10M2207/281—Esters of (cyclo)aliphatic monocarboxylic acids
-
- 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
- C10M2209/00—Organic macromolecular compounds containing oxygen as ingredients in lubricant compositions
- C10M2209/02—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- C10M2209/08—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds containing monomers having an unsaturated radical bound to a carboxyl radical, e.g. acrylate type
- C10M2209/084—Acrylate; Methacrylate
-
- 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
- C10M2215/02—Amines, e.g. polyalkylene polyamines; Quaternary amines
- C10M2215/04—Amines, e.g. polyalkylene polyamines; Quaternary amines having amino groups bound to acyclic or cycloaliphatic carbon atoms
- C10M2215/042—Amines, e.g. polyalkylene polyamines; Quaternary amines having amino groups bound to acyclic or cycloaliphatic carbon atoms containing hydroxy groups; Alkoxylated derivatives thereof
-
- 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
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Lubricants (AREA)
Abstract
The invention relates to the technical field of lubricating oil, and provides lubricating oil and a preparation method thereof, wherein the lubricating oil comprises the following components in parts by weight: 70-85 parts of base oil, 7-12 parts of modified calcium borate, 0.5-1.5 parts of antioxidant, 6-14 parts of viscosity index improver, 0.1-0.3 part of defoamer, 2-5 parts of detergent, 0.05-0.1 part of metal passivator and 0.1-0.4 part of polymethacrylate; the modified nano calcium borate is obtained by modifying calcium borate by stearic acid and para-aminophenylacetic acid. By the technical scheme, the problems of poor hydrolytic stability, poor wear resistance and poor lubricating performance of the lubricating oil in the prior art are solved.
Description
Technical Field
The invention relates to the technical field of lubricating oil, in particular to lubricating oil and a preparation method thereof.
Background
With the development of modern mechanical equipment to high speed, high temperature and high load, the requirements on the lubricating oil condition of the equipment are more and more severe, not only the lubricating oil base oil is required to have good efficiency, but also special properties are required to be added, with the increasing environmental awareness, the requirements on environment-friendly lubricating oil and additives thereof are more and more high, and the additives are required to be low in pollution, low in toxicity and biodegradable, so that the biodegradation of the base oil can be promoted. The borate lubricating oil additive has good wear resistance, antifriction and oxidation stability, is nontoxic, odorless and biodegradable, is an environment-friendly additive, but has the problems of uneven dispersion and poor stability in base oil when being taken as an additive, and can lead to the reduction of lubricating property, hydrolytic stability and wear resistance of lubricating oil, thereby influencing the application of the borate in the lubricating oil.
Disclosure of Invention
The invention provides lubricating oil and a preparation method thereof, which solve the problems of poor hydrolytic stability, poor wear resistance and poor lubricating performance of the lubricating oil in the related technology. .
The technical scheme of the invention is as follows:
the lubricating oil comprises the following components in parts by weight: 70-85 parts of base oil, 7-12 parts of modified calcium borate, 0.5-1.5 parts of antioxidant, 6-14 parts of viscosity index improver, 0.1-0.3 part of defoamer, 2-5 parts of detergent, 0.05-0.1 part of metal passivator and 0.1-0.4 part of polymethacrylate; the modified nano calcium borate is obtained by modifying calcium borate by stearic acid and para-aminophenylacetic acid.
As a further technical scheme, the base oil comprises one or more of mineral oil, PAO synthetic oil and poly alpha olefin synthetic oil; the defoamer comprises one or more of triethanolamine stearate, stearyl stearate and aluminum stearate.
As a further technical scheme, the viscosity index improver comprises one or more of ethylene-propylene copolymer, barium petroleum sulfonate and polyisobutylene.
As a further technical scheme, the preparation method of the modified calcium borate comprises the following steps:
s1, na is added 2 B 4 O 7 ·10H 2 Mixing O with distilled water to obtain a mixed solution I;
s2, ca (NO) 2 ·4H 2 Mixing O, stearic acid, p-aminophenylacetic acid and absolute ethyl alcohol to obtain a mixed solution II;
s3, dropwise adding the mixed solution II into the solution I, regulating the pH to 6.8-7.4, and continuously stirring for 0.5-1h;
s4, performing hydrothermal reaction at 140-150 ℃, centrifuging, and taking a precipitate;
s5, washing and drying the precipitate to obtain the modified calcium borate.
As a further technical scheme, the Na 2 B 4 O 7 ·10H 2 O and Ca (NO) 2 ·4H 2 The mass ratio of O is 2-3:1.
As a further technical scheme, the addition amount of the stearic acid in the S2 is Ca (NO) 2 ·4H 2 2% -4% of O mass.
As a further technical scheme, the adding amount of the p-aminophenylacetic acid in the S2 is Ca (NO) 2 ·4H 2 3% -5% of O mass.
As a further technical scheme, the hydrothermal reaction time in the step S4 is 2-3h.
As a further technical scheme, the drying temperature in the step S5 is 75-85 ℃, and the drying time is 3.5-4h.
A preparation method of lubricating oil comprises the following steps: and heating the base oil to 40-50 ℃, sequentially adding modified calcium borate, an antioxidant, a detergent, a metal passivator, polymethacrylate, a defoaming agent and a viscosity index improver, and uniformly stirring to obtain the lubricating oil.
The working principle and the beneficial effects of the invention are as follows:
1. according to the invention, the modified calcium borate is adopted to improve the wear resistance of the lubricating oil, the calcium borate has excellent wear resistance and antifriction performance, but the surface of the calcium borate is hydrophilic and oleophobic, so that the oil solubility is poor, the surface energy of the calcium borate can be reduced, the oil solubility and the hydrophobicity can be improved by modifying the calcium borate through stearic acid and para-aminophenylacetic acid, so that the dispersion stability of the calcium borate is improved, and the wear resistance and the hydrolytic stability of the lubricating oil can be improved by adding the aminophenylacetic acid.
2. The lubricating oil prepared by the method has good stability, the modified calcium borate can be stably dispersed in the base oil, and the antioxidant, the polymethacrylate, the defoamer and the like are added in an auxiliary manner, so that the dispersion stability of the whole lubricating oil is improved and the phenomenon of gel aggregation is avoided by mutually matching the components.
Detailed Description
The technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1
After 70 parts of base oil is heated to 40 ℃, 7 parts of modified calcium borate, 0.5 part of antioxidant L57, 2 parts of detergent T106, 0.05 part of metal passivator T561, 0.1 part of polymethacrylate, 0.1 part of triethanolamine stearate and 6 parts of polyisobutene are sequentially added, and the mixture is heated to 65 ℃ and stirred for 1h to obtain lubricating oil.
The preparation method of the modified calcium borate comprises the following steps:
s1, 70g of Na 2 B 4 O 7 ·10H 2 Adding O into 1000mL of distilled water, and mixing to obtain a mixed solution I;
s2, 31.8g Ca (NO) 2 ·4H 2 Adding O, 0.64g of stearic acid and 0.94g of p-aminophenylacetic acid into 1000mL of absolute ethyl alcohol, and mixing to obtain a mixed solution II;
s3, dropwise adding the mixed solution II into the solution I, adding 6mol/L nitric acid solution to adjust the pH to 7.4, and continuously stirring for 0.5h;
s4, carrying out hydrothermal reaction for 2 hours at 150 ℃, centrifuging, and taking a precipitate;
s5, washing the precipitate by distilled water and absolute ethyl alcohol in sequence, and drying the precipitate at 75 ℃ for 4 hours to obtain the modified calcium borate.
Example 2
After 85 parts of base oil are heated to 50 ℃, 12 parts of modified calcium borate, 1.5 parts of antioxidant L57, 106 parts of detergent T106, 0.1 part of metal passivator T561, 0.4 part of polymethacrylate, 0.3 part of stearyl stearate and 14 parts of polyisobutene are sequentially added, and the mixture is heated to 65 ℃ and stirred for 1h to obtain lubricating oil.
The preparation method of the modified calcium borate comprises the following steps:
s1, 70g of Na 2 B 4 O 7 ·10H 2 Adding O into 1000mL of distilled water, and mixing to obtain a mixed solution I;
s2, 23.3g Ca (NO) 2 ·4H 2 Adding O, 0.93g of stearic acid and 1.17g of p-aminophenylacetic acid into 1000mL of absolute ethyl alcohol, and mixing to obtain a mixed solution II;
s3, dropwise adding the mixed solution II into the solution I, adding 6mol/L nitric acid solution to adjust the pH to 7.0, and continuously stirring for 1h;
s4, carrying out hydrothermal reaction for 3 hours at 140 ℃, centrifuging, and taking a precipitate;
s5, washing the precipitate by distilled water and absolute ethyl alcohol in sequence, and drying at 85 ℃ for 3.5 hours to obtain the modified calcium borate.
Example 3
After 80 parts of base oil is heated to 45 ℃, 10 parts of modified calcium borate, 57 parts of antioxidant L, 1063 parts of detergent T, 0.08 part of metal passivator T561, 0.3 part of polymethacrylate, 0.2 part of aluminum stearate and 10 parts of barium petroleum sulfonate are sequentially added, and the mixture is heated to 65 ℃ and stirred for 1h to obtain lubricating oil.
The preparation method of the modified calcium borate comprises the following steps:
s1, 70g of Na 2 B 4 O 7 ·10H 2 Adding O into 1000mL of distilled water, and mixing to obtain a mixed solution I;
s2, 28g Ca (NO) 2 ·4H 2 Adding O, 0.84g of stearic acid and 1.12g of p-aminophenylacetic acid into 1000mL of absolute ethyl alcohol, and mixing to obtain a mixed solution II;
s3, dropwise adding the mixed solution II into the solution I, adding a 6mol/L nitric acid solution to adjust the pH to 6.8, and continuously stirring for 1h;
s4, carrying out hydrothermal reaction for 2.5 hours at 145 ℃, centrifuging, and taking a precipitate;
s5, washing the precipitate by distilled water and absolute ethyl alcohol in sequence, and drying at 80 ℃ for 3.5 hours to obtain the modified calcium borate.
Example 4
After 80 parts of base oil is heated to 40 ℃, 7 parts of modified calcium borate, 0.5 part of antioxidant L57, 2 parts of detergent T106, 0.05 part of metal passivator T561, 0.1 part of polymethacrylate, 0.1 part of triethanolamine stearate and 6 parts of polymethacrylate are sequentially added, and the temperature is raised to 65 ℃ and the mixture is stirred for 1 hour to obtain lubricating oil; wherein the preparation method of the modified calcium borate is the same as that of example 1.
Comparative example 1
Comparative example 1 was different from example 1 in that no p-aminophenylacetic acid was added during the preparation of the modified calcium borate, and the amount of stearic acid added was 1.58g.
Comparative example 2
Comparative example 2 was different from example 1 in that the amount of p-aminophenylacetic acid added was 0.64g.
Comparative example 3
Comparative example 3 is different from example 1 in that stearic acid is added in an amount of 1.59g.
The performances of the lubricating oils prepared in examples 1 to 4 and comparative examples 1 to 3 were measured, and the maximum seizure-free load and the diameter of the mill spots were measured according to GB/T3142-2019; the hydrolytic stability was determined according to SH/T0301.
Table 1 measurement results
As can be seen from Table 1, the lubricating oils prepared in examples 1 to 4 of the present invention have better lubricating properties, hydrolytic stability and wear resistance than the lubricating oils prepared in comparative examples 1 to 3.
Compared with example 1, comparative example 1 was modified with calcium borate without adding para-aminophenylacetic acid and only adding stearic acid, and the maximum bite-free load, the diameter of the mill, and the hydrolytic stability measured in comparative example 1 were all smaller than those of example 1, indicating that the effect of modifying calcium borate with the addition of stearic acid and para-aminophenylacetic acid is better than that of modifying calcium borate with the addition of stearic acid alone. Compared with example 1, the addition amount of the para-aminophenylacetic acid is changed in comparative example 2, the addition amount of the stearic acid is changed in comparative example 3, and as a result, the lubricating oils prepared in comparative example 2 and comparative example 3 have lower lubricating properties, hydrolytic stability and wear resistance than those of example 1, which shows that the addition amount of the stearic acid and the para-aminophenylacetic acid defined in the invention can better improve the performance of the lubricating oils.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the invention.
Claims (10)
1. The lubricating oil is characterized by comprising the following components in parts by weight: 70-85 parts of base oil, 7-12 parts of modified calcium borate, 0.5-1.5 parts of antioxidant, 6-14 parts of viscosity index improver, 0.1-0.3 part of defoamer, 2-5 parts of detergent, 0.05-0.1 part of metal passivator and 0.1-0.4 part of polymethacrylate; the modified nano calcium borate is obtained by modifying calcium borate by stearic acid and para-aminophenylacetic acid.
2. The lubricating oil of claim 1, wherein the base oil comprises one or more of mineral oil, PAO synthetic oil, polyalphaolefin synthetic oil; the defoamer comprises one or more of triethanolamine stearate, stearyl stearate and aluminum stearate.
3. The lubricating oil of claim 1, wherein the viscosity index improver comprises one or more of ethylene propylene copolymer, barium petroleum sulfonate, and polyisobutylene.
4. The lubricating oil according to claim 1, wherein the modified calcium borate is prepared by the following steps:
s1, na is added 2 B 4 O 7 ·10H 2 Mixing O with distilled water to obtain a mixed solution I;
s2, ca (NO) 2 ·4H 2 Mixing O, stearic acid, p-aminophenylacetic acid and absolute ethyl alcohol to obtain a mixed solution II;
s3, dropwise adding the mixed solution II into the solution I, regulating the pH to 6.8-7.4, and continuously stirring for 0.5-1h;
s4, performing hydrothermal reaction at 140-150 ℃, centrifuging, and taking a precipitate;
s5, washing and drying the precipitate to obtain the modified calcium borate.
5. A lubricating oil according to claim 4, which isCharacterized in that the Na 2 B 4 O 7 ·10H 2 O and Ca (NO) 2 ·4H 2 The mass ratio of O is 2-3:1.
6. A lubricating oil according to claim 4, wherein the amount of stearic acid added in S2 is Ca (NO) 2 ·4H 2 2% -4% of O mass.
7. The lubricating oil according to claim 4, wherein the amount of p-aminophenylacetic acid added in S2 is Ca (NO) 2 ·4H 2 3% -5% of O mass.
8. The lubricating oil according to claim 1, wherein the time for the hydrothermal reaction in S4 is 2 to 3 hours.
9. A lubricating oil according to claim 1, wherein the drying in S5 is carried out at a temperature of 75-85 ℃ for a drying time of 3.5-4 hours.
10. The method for preparing the lubricating oil according to claim 1, comprising the following steps: and heating the base oil to 40-50 ℃, sequentially adding modified calcium borate, an antioxidant, a detergent, a metal passivator, polymethacrylate, a defoaming agent and a viscosity index improver, and uniformly stirring to obtain the lubricating oil.
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