CN114836255B - Biodegradable composite lubricating oil - Google Patents
Biodegradable composite lubricating oil Download PDFInfo
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- CN114836255B CN114836255B CN202210377117.6A CN202210377117A CN114836255B CN 114836255 B CN114836255 B CN 114836255B CN 202210377117 A CN202210377117 A CN 202210377117A CN 114836255 B CN114836255 B CN 114836255B
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- 239000010687 lubricating oil Substances 0.000 title claims abstract description 50
- 239000002131 composite material Substances 0.000 title claims abstract description 29
- 239000000463 material Substances 0.000 claims abstract description 63
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 47
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims abstract description 46
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 44
- 239000000654 additive Substances 0.000 claims abstract description 35
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 33
- 235000015112 vegetable and seed oil Nutrition 0.000 claims abstract description 31
- 239000008158 vegetable oil Substances 0.000 claims abstract description 31
- GLDOVTGHNKAZLK-UHFFFAOYSA-N octadecan-1-ol Chemical compound CCCCCCCCCCCCCCCCCCO GLDOVTGHNKAZLK-UHFFFAOYSA-N 0.000 claims abstract description 30
- WRIDQFICGBMAFQ-UHFFFAOYSA-N (E)-8-Octadecenoic acid Natural products CCCCCCCCCC=CCCCCCCC(O)=O WRIDQFICGBMAFQ-UHFFFAOYSA-N 0.000 claims abstract description 27
- LQJBNNIYVWPHFW-UHFFFAOYSA-N 20:1omega9c fatty acid Natural products CCCCCCCCCCC=CCCCCCCCC(O)=O LQJBNNIYVWPHFW-UHFFFAOYSA-N 0.000 claims abstract description 27
- QSBYPNXLFMSGKH-UHFFFAOYSA-N 9-Heptadecensaeure Natural products CCCCCCCC=CCCCCCCCC(O)=O QSBYPNXLFMSGKH-UHFFFAOYSA-N 0.000 claims abstract description 27
- 239000005642 Oleic acid Substances 0.000 claims abstract description 27
- ZQPPMHVWECSIRJ-UHFFFAOYSA-N Oleic acid Natural products CCCCCCCCC=CCCCCCCCC(O)=O ZQPPMHVWECSIRJ-UHFFFAOYSA-N 0.000 claims abstract description 27
- QXJSBBXBKPUZAA-UHFFFAOYSA-N isooleic acid Natural products CCCCCCCC=CCCCCCCCCC(O)=O QXJSBBXBKPUZAA-UHFFFAOYSA-N 0.000 claims abstract description 27
- ZQPPMHVWECSIRJ-KTKRTIGZSA-N oleic acid Chemical compound CCCCCCCC\C=C/CCCCCCCC(O)=O ZQPPMHVWECSIRJ-KTKRTIGZSA-N 0.000 claims abstract description 27
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims abstract description 23
- 239000003963 antioxidant agent Substances 0.000 claims abstract description 20
- 235000019438 castor oil Nutrition 0.000 claims abstract description 20
- 239000004359 castor oil Substances 0.000 claims abstract description 20
- 235000012343 cottonseed oil Nutrition 0.000 claims abstract description 20
- 239000002385 cottonseed oil Substances 0.000 claims abstract description 20
- 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 abstract description 20
- 230000003078 antioxidant effect Effects 0.000 claims abstract description 19
- 239000004094 surface-active agent Substances 0.000 claims abstract description 18
- 239000000377 silicon dioxide Substances 0.000 claims abstract description 17
- 238000002360 preparation method Methods 0.000 claims abstract description 15
- 239000004005 microsphere Substances 0.000 claims abstract description 14
- 239000002994 raw material Substances 0.000 claims abstract description 10
- 239000000945 filler Substances 0.000 claims abstract description 9
- 239000013530 defoamer Substances 0.000 claims abstract description 7
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 claims description 54
- 238000003756 stirring Methods 0.000 claims description 54
- 238000006243 chemical reaction Methods 0.000 claims description 53
- 238000010438 heat treatment Methods 0.000 claims description 28
- 238000001132 ultrasonic dispersion Methods 0.000 claims description 28
- 230000000996 additive effect Effects 0.000 claims description 25
- QYEXBYZXHDUPRC-UHFFFAOYSA-N B#[Ti]#B Chemical compound B#[Ti]#B QYEXBYZXHDUPRC-UHFFFAOYSA-N 0.000 claims description 24
- 229910052581 Si3N4 Inorganic materials 0.000 claims description 24
- 229910033181 TiB2 Inorganic materials 0.000 claims description 24
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 claims description 24
- 238000001354 calcination Methods 0.000 claims description 18
- 238000001816 cooling Methods 0.000 claims description 18
- 238000002156 mixing Methods 0.000 claims description 18
- 238000001914 filtration Methods 0.000 claims description 17
- 238000001291 vacuum drying Methods 0.000 claims description 17
- 238000005406 washing Methods 0.000 claims description 17
- 235000012239 silicon dioxide Nutrition 0.000 claims description 15
- 239000002518 antifoaming agent Substances 0.000 claims description 13
- QRUDEWIWKLJBPS-UHFFFAOYSA-N benzotriazole Chemical compound C1=CC=C2N[N][N]C2=C1 QRUDEWIWKLJBPS-UHFFFAOYSA-N 0.000 claims description 12
- 239000012964 benzotriazole Substances 0.000 claims description 12
- WSFSSNUMVMOOMR-NJFSPNSNSA-N methanone Chemical compound O=[14CH2] WSFSSNUMVMOOMR-NJFSPNSNSA-N 0.000 claims description 10
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 claims description 9
- BOTDANWDWHJENH-UHFFFAOYSA-N Tetraethyl orthosilicate Chemical compound CCO[Si](OCC)(OCC)OCC BOTDANWDWHJENH-UHFFFAOYSA-N 0.000 claims description 9
- 235000011114 ammonium hydroxide Nutrition 0.000 claims description 9
- 239000008367 deionised water Substances 0.000 claims description 9
- 229910021641 deionized water Inorganic materials 0.000 claims description 9
- 239000011259 mixed solution Substances 0.000 claims description 9
- 238000004321 preservation Methods 0.000 claims description 9
- 238000010992 reflux Methods 0.000 claims description 9
- XDTMQSROBMDMFD-UHFFFAOYSA-N Cyclohexane Chemical compound C1CCCCC1 XDTMQSROBMDMFD-UHFFFAOYSA-N 0.000 claims description 8
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 8
- 230000000630 rising effect Effects 0.000 claims description 8
- QAOWNCQODCNURD-UHFFFAOYSA-N sulfuric acid Substances OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 8
- FJLUATLTXUNBOT-UHFFFAOYSA-N 1-Hexadecylamine Chemical group CCCCCCCCCCCCCCCCN FJLUATLTXUNBOT-UHFFFAOYSA-N 0.000 claims description 6
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 claims description 6
- 238000000034 method Methods 0.000 abstract description 9
- 238000013461 design Methods 0.000 abstract description 4
- 230000007613 environmental effect Effects 0.000 abstract description 4
- 230000001050 lubricating effect Effects 0.000 abstract description 3
- 230000000052 comparative effect Effects 0.000 description 13
- 239000000203 mixture Substances 0.000 description 4
- 239000003921 oil Substances 0.000 description 4
- 235000019198 oils Nutrition 0.000 description 4
- 238000006065 biodegradation reaction Methods 0.000 description 3
- 238000011161 development Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- REYJJPSVUYRZGE-UHFFFAOYSA-N Octadecylamine Chemical compound CCCCCCCCCCCCCCCCCCN REYJJPSVUYRZGE-UHFFFAOYSA-N 0.000 description 2
- 125000000217 alkyl group Chemical group 0.000 description 2
- 239000002199 base oil Substances 0.000 description 2
- JRBPAEWTRLWTQC-UHFFFAOYSA-N dodecylamine Chemical compound CCCCCCCCCCCCN JRBPAEWTRLWTQC-UHFFFAOYSA-N 0.000 description 2
- 239000000314 lubricant Substances 0.000 description 2
- 229910019142 PO4 Inorganic materials 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- MXJIHEXYGRXHGP-UHFFFAOYSA-N benzotriazol-1-ylmethanol Chemical compound C1=CC=C2N(CO)N=NC2=C1 MXJIHEXYGRXHGP-UHFFFAOYSA-N 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 1
- 239000010452 phosphate Substances 0.000 description 1
- -1 phosphate radicals Chemical class 0.000 description 1
- 229910021426 porous silicon Inorganic materials 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 150000005691 triesters Chemical group 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
- C10M173/00—Lubricating compositions containing more than 10% water
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2201/00—Inorganic compounds or elements as ingredients in lubricant compositions
- C10M2201/085—Phosphorus oxides, acids or 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
- C10M2201/00—Inorganic compounds or elements as ingredients in lubricant compositions
- C10M2201/087—Boron oxides, acids or 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
- C10M2201/00—Inorganic compounds or elements as ingredients in lubricant compositions
- C10M2201/10—Compounds containing silicon
-
- 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
- C10M2201/10—Compounds containing silicon
- C10M2201/105—Silica
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
- C10M2207/02—Hydroxy compounds
- C10M2207/021—Hydroxy compounds having hydroxy groups bound to acyclic or cycloaliphatic carbon atoms
-
- 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
- C10M2207/40—Fatty vegetable or animal oils
- C10M2207/401—Fatty vegetable or animal oils used as base material
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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
- 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
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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
- 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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- 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
- C10N2030/64—Environmental friendly compositions
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- 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 application discloses a biodegradable composite lubricating oil and a preparation process thereof, wherein the composite lubricating oil comprises the following raw materials in parts by weight: 4-6 parts of modified abrasive resistant materials, 3-4 parts of additives, 10-15 parts of phosphoric acid, 15-18 parts of n-octadecanol, 30-40 parts of vegetable oil, 2-3 parts of oleic acid surfactant, 2-3 parts of antioxidant, 2-3 parts of extreme pressure agent, 1-2 parts of defoamer, 5-6 parts of viscosity regulator and 15-20 parts of water; the vegetable oil comprises castor oil and cottonseed oil, wherein the mass ratio of the castor oil to the cottonseed oil is 1:1, a step of; the modified wear-resistant agent is an oil-soluble microsphere, and the microsphere is mainly prepared from silica coated filler. The application discloses biodegradable composite lubricating oil and a preparation process thereof, wherein the process is reasonable in design, simple to operate, and the prepared lubricating oil has excellent wear resistance and antifriction performance, good lubricating performance, good storage stability, biodegradability, no damage to ecological environment, practicability and environmental protection.
Description
Technical Field
The application relates to the technical field of lubricating oil, in particular to biodegradable composite lubricating oil.
Background
With the progress and development of technology, we pay more and more attention to environmental pollution, green environmental protection also becomes the development direction provided by us all the time, and for lubricating oil, development of a biodegradable and sustainable green lubricating oil also becomes one of the main research directions of us.
At present, when lubricating oil is prepared, wear-resistant additives such as silicon dioxide are generally added, the compatibility of the wear-resistant additives and the lubricating oil is poor, the wear-resistant additives are easy to agglomerate in the lubricating oil, the wear resistance of the lubricating oil cannot be improved, the use effect of the lubricating oil is reduced, and meanwhile, the lubricating oil is a topic of attention in the direction of biodegradation.
Based on the above situation, we need to disclose a biodegradable composite lubricating oil and a preparation process thereof to solve the problem.
Disclosure of Invention
The application aims to provide a biodegradable composite lubricating oil and a preparation process thereof, so as to solve the problems in the background technology.
In order to solve the technical problems, the application provides the following technical scheme:
a biodegradable composite lubricating oil comprises the following raw materials: 4-6 parts of modified abrasive resistant materials, 3-4 parts of additives, 10-15 parts of phosphoric acid, 15-18 parts of n-octadecanol, 30-40 parts of vegetable oil, 2-3 parts of oleic acid surfactant, 2-3 parts of antioxidant, 2-3 parts of extreme pressure agent, 1-2 parts of defoamer, 5-6 parts of viscosity regulator and 15-20 parts of water.
More optimized scheme, the vegetable oil comprises castor oil and cotton seed oil, wherein the mass ratio of the castor oil to the cotton seed oil is 1:1.
in an optimized scheme, the modified wear-resistant agent is an oil-soluble microsphere, and the microsphere is mainly prepared from silica coated filler.
More optimized scheme, the filler comprises silicon nitride and titanium diboride, and the mass ratio of the silicon nitride to the titanium diboride is 1:2.
the optimized scheme is that the additive is mainly prepared by the reaction of benzotriazole and formaldehyde.
The preparation process of the biodegradable composite lubricating oil comprises the following specific steps of:
(1) Mixing and stirring silicon nitride and titanium diboride for 10-20min, adding isopropanol, performing ultrasonic dispersion for 20-30min, adding a mixed solution of ammonia water, deionized water and isopropanol, stirring for 5-10min, continuously adding tetraethoxysilane and isopropanol, stirring for 10-15min, adding a pore-forming agent, performing constant temperature reaction for 1-2h at a water bath of 40-45 ℃, heating to 85-90 ℃, performing reflux reaction for 2-3h, performing centrifugal washing after the reaction, and performing vacuum drying to obtain a material A;
taking the material A, heating to 300-400 ℃, calcining for 3-5h, and cooling to room temperature to obtain the abrasive resistant material;
(2) Placing the abrasive resistance material in cyclohexane, performing ultrasonic dispersion, adding oleic acid and concentrated sulfuric acid, stirring at 70-75 ℃ for reaction for 4-6 hours, filtering, separating, washing with absolute ethyl alcohol, and vacuum drying at 70-80 ℃ to obtain modified abrasive resistance material;
(3) Mixing benzotriazole, water and formaldehyde, stirring uniformly, reacting at 75-80 ℃ under heat preservation, cooling, and filtering to obtain an additive;
(4) Adding phosphoric acid and n-octadecanol into the modified abrasive-resistant material and the additive, heating to 110 ℃ for reaction, adding vegetable oil and oleic acid surfactant after the reaction is finished, performing ultrasonic dispersion for 3-6min, adding an antioxidant, an extreme pressure agent, a defoaming agent, a viscosity regulator and water, uniformly stirring, and standing for 20-24h to obtain a finished product.
The more optimized scheme comprises the following specific steps:
(1) Mixing and stirring silicon nitride and titanium diboride for 10-20min, adding isopropanol, performing ultrasonic dispersion for 20-30min, adding a mixed solution of ammonia water, deionized water and isopropanol, stirring for 5-10min, continuously adding tetraethoxysilane and isopropanol, stirring for 10-15min, adding a pore-forming agent, performing constant temperature reaction for 1-2h at a water bath of 40-45 ℃, heating to 85-90 ℃, performing reflux reaction for 2-3h, performing centrifugal washing after the reaction, and performing vacuum drying to obtain a material A;
taking the material A, heating to 300-400 ℃, calcining for 3-5h, and cooling to room temperature to obtain the abrasive resistant material;
(2) Placing the abrasive resistance material in cyclohexane, performing ultrasonic dispersion, adding oleic acid and concentrated sulfuric acid, stirring at 70-75 ℃ for reaction for 4-6 hours, filtering, separating, washing with absolute ethyl alcohol, and vacuum drying at 70-80 ℃ to obtain modified abrasive resistance material;
(3) Mixing benzotriazole, water and formaldehyde, stirring uniformly, reacting at 75-80 ℃ under heat preservation, cooling, and filtering to obtain an additive;
(4) Adding phosphoric acid and n-octadecanol into the modified abrasive-resistant material and the additive, heating to 110 ℃ for reaction, adding vegetable oil and oleic acid surfactant after the reaction is finished, performing ultrasonic dispersion for 3-6min, adding an antioxidant, an extreme pressure agent, a defoaming agent, a viscosity regulator and water, uniformly stirring, and standing for 20-24h to obtain a finished product.
In the step (2), the ultrasonic dispersion time is 1 to 1.2 hours.
In the step (3), the reaction time is 30-35min.
In the step (1), the temperature rising rate is 1-2 ℃/min during calcination.
Compared with the prior art, the application has the following beneficial effects:
the application discloses a biodegradable composite lubricating oil and a preparation process thereof, and particularly comprises components such as modified abrasive resistant materials, additives, phosphoric acid, n-octadecanol, vegetable oil and the like.
In order to improve the comprehensive performance of the lubricating oil, the application also adds a modified wear-resistant agent, silicon nitride and titanium diboride are selected as wear-resistant fillers during processing, and the silicon nitride and the titanium diboride have higher hardness and wear resistance and are generally directly added into the lubricating oil as wear-resistant additives so as to improve the wear resistance and antifriction performance of the lubricating oil; the application creatively coats the silicon dioxide microsphere on the surface of the wear-resistant filler, any one of dodecylamine, hexadecylamine and octadecylamine is taken as a pore-forming agent, the silicon dioxide microsphere with a porous structure is formed after calcination, in the use process of actual lubricating oil, the silicon dioxide microsphere is taken as a wear-resistant main material in the initial stage of the use of the lubricating oil, so that the wear-resistant effect is ensured, but as the lubricating oil is continuously used, part of porous silicon dioxide is broken and interacts with base oil and the wear-resistant filler to form a mixed oil film, and the wear-resistant filler plays a main wear-resistant role, so that the design can effectively maintain the service life of the lubricating oil, and the broken silicon dioxide shell formed in the friction process can also play a role of synergetic antifriction, so that the wear-resistant antifriction performance of the lubricating oil is further improved.
After the silicon dioxide coated microsphere is prepared, the silicon dioxide microsphere is poor in dispersibility in an oil system and easy to agglomerate, so that the silicon dioxide coated microsphere is esterified by oleic acid and long-chain alkyl is introduced to improve the oil solubility of the silicon dioxide coated microsphere, and the uniform dispersion of the silicon dioxide microsphere in base oil is ensured.
After the modified antiwear agent is prepared, the 1-hydroxymethyl benzotriazole serving as an additive is prepared through the reaction of the benzotriazole and formaldehyde, the additive can form a triester structure with phosphoric acid and n-stearyl alcohol, the introduction of long-chain alkyl and the introduction of phenyl can effectively improve the antiwear and antifriction properties of the whole lubricating oil, and due to the existence of phosphoric acid, phosphate radicals can be combined with hydroxyl on the surface of silicon dioxide, so that the modified antiwear agent has better oil solubility and more excellent overall effect.
The application discloses biodegradable composite lubricating oil and a preparation process thereof, wherein the process is reasonable in design, simple to operate, and the prepared lubricating oil has excellent wear resistance and antifriction performance, good lubricating performance, good storage stability, biodegradability, no damage to ecological environment, practicability and environmental protection.
Detailed Description
The following will clearly and fully describe the technical solutions in the examples of the present application, and it is obvious that the examples described are only some examples of the present application, not all examples. All other examples, based on examples in this application, which a person of ordinary skill in the art would obtain without making any inventive effort, are within the scope of the application.
Example 1:
a preparation process of biodegradable composite lubricating oil comprises the following specific steps:
(1) Mixing and stirring silicon nitride and titanium diboride for 10min, adding isopropanol, performing ultrasonic dispersion for 20min, adding a mixed solution of ammonia water, deionized water and isopropanol, stirring for 5min, continuously adding tetraethoxysilane and isopropanol, stirring for 10min, adding a pore-forming agent, performing constant-temperature reaction for 2h in a water bath at 40 ℃, heating to 85 ℃, performing reflux reaction for 3h, performing centrifugal washing after the reaction, and performing vacuum drying to obtain a material A;
taking a material A, heating to 300 ℃, calcining for 3 hours, and cooling to room temperature to obtain a wear-resistant material; the temperature rising rate is 1 ℃/min during calcination;
(2) Placing the abrasive resistance material in cyclohexane, performing ultrasonic dispersion for 1h, adding oleic acid and concentrated sulfuric acid, stirring at 70 ℃ for reaction for 6h, filtering, separating, washing with absolute ethyl alcohol, and performing vacuum drying at 70 ℃ to obtain modified abrasive resistance material;
(3) Mixing benzotriazole, water and formaldehyde, stirring uniformly, reacting at 75 ℃ for 35min under heat preservation, cooling, and filtering to obtain an additive;
(4) Adding phosphoric acid and n-octadecanol into the modified abrasive-resistant material and the additive, heating to 110 ℃ for reaction, adding vegetable oil and oleic acid surfactant after the reaction is finished, performing ultrasonic dispersion for 3min, adding an antioxidant, an extreme pressure agent, a defoaming agent, a viscosity regulator and water, uniformly stirring, and standing for 24h to obtain a finished product.
In this example, the composite lubricating oil comprises the following raw materials: the modified abrasive comprises, by weight, 4 parts of modified abrasive resistant materials, 3 parts of additives, 10 parts of phosphoric acid, 15 parts of n-stearyl alcohol, 30 parts of vegetable oil, 2 parts of oleic acid surfactant, 2 parts of antioxidant, 2 parts of extreme pressure agent, 1 part of defoamer, 5 parts of viscosity regulator and 15 parts of water.
The vegetable oil comprises castor oil and cottonseed oil, wherein the mass ratio of the castor oil to the cottonseed oil is 1:1, a step of; the mass ratio of the silicon nitride to the titanium diboride is 1:2; the pore-forming agent is dodecylamine.
Example 2:
a preparation process of biodegradable composite lubricating oil comprises the following specific steps:
(1) Mixing and stirring silicon nitride and titanium diboride for 15min, adding isopropanol, performing ultrasonic dispersion for 25min, adding a mixed solution of ammonia water, deionized water and isopropanol, stirring for 8min, continuously adding tetraethoxysilane and isopropanol, stirring for 12min, adding a pore-forming agent, performing constant-temperature reaction for 1.5 in a water bath at 43 ℃, heating to 88 ℃, performing reflux reaction for 2.5h, performing centrifugal washing after the reaction, and performing vacuum drying to obtain a material A;
taking a material A, heating to 350 ℃, calcining for 4 hours, and cooling to room temperature to obtain a wear-resistant material; the temperature rising rate during calcination is 1.5 ℃/min;
(2) Placing the abrasive resistance material in cyclohexane, performing ultrasonic dispersion for 1.1h, adding oleic acid and concentrated sulfuric acid, stirring and reacting for 5h at 73 ℃, filtering and separating, washing with absolute ethyl alcohol, and performing vacuum drying at 75 ℃ to obtain modified abrasive resistance material;
(3) Mixing benzotriazole, water and formaldehyde, stirring uniformly, reacting at 78 ℃ for 32min under heat preservation, cooling, and filtering to obtain an additive;
(4) Adding phosphoric acid and n-octadecanol into the modified abrasive-resistant material and the additive, heating to 110 ℃ for reaction, adding vegetable oil and oleic acid surfactant after the reaction is finished, performing ultrasonic dispersion for 5min, adding an antioxidant, an extreme pressure agent, a defoaming agent, a viscosity regulator and water, uniformly stirring, and standing for 22h to obtain a finished product.
In this example, the composite lubricating oil comprises the following raw materials: the modified abrasive comprises, by weight, 5 parts of modified abrasive resistant materials, 3.5 parts of additives, 12 parts of phosphoric acid, 17 parts of n-stearyl alcohol, 35 parts of vegetable oil, 2.5 parts of oleic acid surfactants, 2 parts of antioxidants, 2.5 parts of extreme pressure agents, 1.5 parts of antifoaming agents, 5 parts of viscosity regulators and 18 parts of water.
The vegetable oil comprises castor oil and cottonseed oil, wherein the mass ratio of the castor oil to the cottonseed oil is 1:1, a step of; the mass ratio of the silicon nitride to the titanium diboride is 1:2; the pore-forming agent is hexadecylamine.
Example 3:
a preparation process of biodegradable composite lubricating oil comprises the following specific steps:
(1) Mixing and stirring silicon nitride and titanium diboride for 20min, adding isopropanol, performing ultrasonic dispersion for 30min, adding a mixed solution of ammonia water, deionized water and isopropanol, stirring for 10min, continuously adding tetraethoxysilane and isopropanol, stirring for 15min, adding a pore-forming agent, performing constant-temperature reaction for 2h in a water bath at 45 ℃, heating to 90 ℃, performing reflux reaction for 3h, performing centrifugal washing after the reaction, and performing vacuum drying to obtain a material A;
taking a material A, heating to 400 ℃, calcining for 3 hours, and cooling to room temperature to obtain a wear-resistant material; the temperature rising rate is 2 ℃/min during calcination;
(2) Placing the abrasive resistance material in cyclohexane, performing ultrasonic dispersion for 1.2 hours, adding oleic acid and concentrated sulfuric acid, stirring and reacting for 6 hours at 75 ℃, filtering and separating, washing with absolute ethyl alcohol, and performing vacuum drying at 80 ℃ to obtain modified abrasive resistance material;
(3) Mixing benzotriazole, water and formaldehyde, stirring uniformly, reacting at 80 ℃ for 35min under heat preservation, cooling, and filtering to obtain an additive;
(4) Adding phosphoric acid and n-octadecanol into the modified abrasive-resistant material and the additive, heating to 110 ℃ for reaction, adding vegetable oil and oleic acid surfactant after the reaction is finished, performing ultrasonic dispersion for 6min, adding an antioxidant, an extreme pressure agent, a defoaming agent, a viscosity regulator and water, uniformly stirring, and standing for 24h to obtain a finished product.
In this example, the composite lubricating oil comprises the following raw materials: by weight, 6 parts of modified abrasive resistant material, 4 parts of additive, 15 parts of phosphoric acid, 18 parts of n-octadecanol, 40 parts of vegetable oil, 3 parts of oleic acid surfactant, 3 parts of antioxidant, 3 parts of extreme pressure agent, 2 parts of defoamer, 6 parts of viscosity regulator and 20 parts of water.
The vegetable oil comprises castor oil and cottonseed oil, wherein the mass ratio of the castor oil to the cottonseed oil is 1:1, a step of; the mass ratio of the silicon nitride to the titanium diboride is 1:2; the pore-forming agent is octadecylamine.
Comparative example 1:
a preparation process of biodegradable composite lubricating oil comprises the following specific steps:
(1) Mixing and stirring silicon nitride and titanium diboride for 15min, adding isopropanol, performing ultrasonic dispersion for 25min, adding a mixed solution of ammonia water, deionized water and isopropanol, stirring for 8min, continuously adding tetraethoxysilane and isopropanol, stirring for 12min, adding a pore-forming agent, performing constant-temperature reaction for 1.5 in a water bath at 43 ℃, heating to 88 ℃, performing reflux reaction for 2.5h, performing centrifugal washing after the reaction, and performing vacuum drying to obtain a material A;
taking a material A, heating to 350 ℃, calcining for 4 hours, and cooling to room temperature to obtain a wear-resistant material; the temperature rising rate during calcination is 1.5 ℃/min;
(2) Placing the abrasive resistance material in cyclohexane, performing ultrasonic dispersion for 1.1h, adding oleic acid and concentrated sulfuric acid, stirring and reacting for 5h at 73 ℃, filtering and separating, washing with absolute ethyl alcohol, and performing vacuum drying at 75 ℃ to obtain modified abrasive resistance material;
(3) Mixing benzotriazole, water and formaldehyde, stirring uniformly, reacting at 78 ℃ for 32min under heat preservation, cooling, and filtering to obtain an additive;
(4) Adding phosphoric acid into the modified abrasive-resistant material and the additive, heating to 110 ℃ for reaction, adding vegetable oil and oleic acid surfactant after the reaction is finished, performing ultrasonic dispersion for 5min, adding an antioxidant, an extreme pressure agent, a defoaming agent, a viscosity regulator and water, uniformly stirring, and standing for 22h to obtain a finished product.
In this example, the composite lubricating oil comprises the following raw materials: by weight, 5 parts of modified abrasive resistant material, 3.5 parts of additive, 12 parts of phosphoric acid, 35 parts of vegetable oil, 2.5 parts of oleic acid surfactant, 2 parts of antioxidant, 2.5 parts of extreme pressure agent, 1.5 parts of defoamer, 5 parts of viscosity regulator and 18 parts of water.
The vegetable oil comprises castor oil and cottonseed oil, wherein the mass ratio of the castor oil to the cottonseed oil is 1:1, a step of; the mass ratio of the silicon nitride to the titanium diboride is 1:2; the pore-forming agent is hexadecylamine.
No n-octadecanol was added in comparative example 1, and the remaining component contents and process parameters were identical to those of example 2.
Comparative example 2:
a preparation process of biodegradable composite lubricating oil comprises the following specific steps:
(1) Mixing and stirring silicon nitride and titanium diboride for 15min, adding isopropanol, performing ultrasonic dispersion for 25min, adding a mixed solution of ammonia water, deionized water and isopropanol, stirring for 8min, continuously adding tetraethoxysilane and isopropanol, stirring for 12min, adding a pore-forming agent, performing constant-temperature reaction for 1.5 in a water bath at 43 ℃, heating to 88 ℃, performing reflux reaction for 2.5h, performing centrifugal washing after the reaction, and performing vacuum drying to obtain a material A;
taking a material A, heating to 350 ℃, calcining for 4 hours, and cooling to room temperature to obtain a wear-resistant material; the temperature rising rate during calcination is 1.5 ℃/min;
(2) Placing the abrasive resistance material in cyclohexane, performing ultrasonic dispersion for 1.1h, adding oleic acid and concentrated sulfuric acid, stirring and reacting for 5h at 73 ℃, filtering and separating, washing with absolute ethyl alcohol, and performing vacuum drying at 75 ℃ to obtain modified abrasive resistance material;
(3) Adding phosphoric acid and n-octadecanol into the modified abrasive, heating to 110 ℃ for reaction, adding vegetable oil and oleic acid surfactant after the reaction is finished, performing ultrasonic dispersion for 5min, adding an antioxidant, an extreme pressure agent, a defoaming agent, a viscosity regulator and water, uniformly stirring, and standing for 22h to obtain a finished product.
In this example, the composite lubricating oil comprises the following raw materials: by weight, 5 parts of modified abrasive resistant material, 12 parts of phosphoric acid, 17 parts of n-octadecanol, 35 parts of vegetable oil, 2.5 parts of oleic acid surfactant, 2 parts of antioxidant, 2.5 parts of extreme pressure agent, 1.5 parts of defoamer, 5 parts of viscosity regulator and 18 parts of water.
The vegetable oil comprises castor oil and cottonseed oil, wherein the mass ratio of the castor oil to the cottonseed oil is 1:1, a step of; the mass ratio of the silicon nitride to the titanium diboride is 1:2; the pore-forming agent is hexadecylamine.
No additives were added to comparative example 2 and the remaining component contents and process parameters were identical to those of example 2.
Comparative example 3:
a preparation process of biodegradable composite lubricating oil comprises the following specific steps:
(1) Mixing and stirring silicon nitride and titanium diboride for 15min, adding isopropanol, performing ultrasonic dispersion for 25min, adding a mixed solution of ammonia water, deionized water and isopropanol, stirring for 8min, continuously adding tetraethoxysilane and isopropanol, stirring for 12min, adding a pore-forming agent, performing constant-temperature reaction for 1.5 in a water bath at 43 ℃, heating to 88 ℃, performing reflux reaction for 2.5h, performing centrifugal washing after the reaction, and performing vacuum drying to obtain a material A;
taking a material A, heating to 350 ℃, calcining for 4 hours, and cooling to room temperature to obtain a wear-resistant material; the temperature rising rate during calcination is 1.5 ℃/min;
(2) Mixing benzotriazole, water and formaldehyde, stirring uniformly, reacting at 78 ℃ for 32min under heat preservation, cooling, and filtering to obtain an additive;
(3) Adding phosphoric acid and n-octadecanol into the mixture, heating the mixture to 110 ℃ for reaction, adding vegetable oil and oleic acid surfactant after the reaction is finished, performing ultrasonic dispersion for 5min, adding an antioxidant, an extreme pressure agent, a defoaming agent, a viscosity regulator and water, uniformly stirring, and standing for 22h to obtain a finished product.
In this example, the composite lubricating oil comprises the following raw materials: the lubricant comprises, by weight, 5 parts of an antiwear material, 3.5 parts of an additive, 12 parts of phosphoric acid, 17 parts of n-stearyl alcohol, 35 parts of vegetable oil, 2 parts of an antioxidant, 2.5 parts of an extreme pressure agent, 1.5 parts of a defoaming agent, 5 parts of a viscosity regulator and 18 parts of water.
The vegetable oil comprises castor oil and cottonseed oil, wherein the mass ratio of the castor oil to the cottonseed oil is 1:1, a step of; the mass ratio of the silicon nitride to the titanium diboride is 1:2; the pore-forming agent is hexadecylamine.
The abrasion resistant agent was not modified in comparative example 3 and the remaining component contents and process parameters were identical to those of example 2.
Comparative example 4:
a preparation process of biodegradable composite lubricating oil comprises the following specific steps:
(1) Mixing benzotriazole, water and formaldehyde, stirring uniformly, reacting at 78 ℃ for 32min under heat preservation, cooling, and filtering to obtain an additive;
(2) Adding phosphoric acid and n-octadecanol into the mixture, heating the mixture to 110 ℃ for reaction, adding vegetable oil and oleic acid surfactant after the reaction is finished, performing ultrasonic dispersion for 5min, adding an antioxidant, an extreme pressure agent, a defoaming agent, a viscosity regulator and water, uniformly stirring, and standing for 22h to obtain a finished product.
In this example, the composite lubricating oil comprises the following raw materials: the lubricant comprises, by weight, 5 parts of an antiwear material, 3.5 parts of an additive, 12 parts of phosphoric acid, 17 parts of n-stearyl alcohol, 35 parts of vegetable oil, 2 parts of an antioxidant, 2.5 parts of an extreme pressure agent, 1.5 parts of a defoaming agent, 5 parts of a viscosity regulator and 18 parts of water.
The vegetable oil comprises castor oil and cottonseed oil, wherein the mass ratio of the castor oil to the cottonseed oil is 1:1, a step of; the mass ratio of the silicon nitride to the titanium diboride is 1:2; the wear-resistant material comprises silicon dioxide, silicon nitride and titanium diboride in a mass ratio of 1:1:1.
in comparative example 4, silicon dioxide, silicon nitride and titanium diboride were directly added, and the content of the remaining components and the process parameters were the same as in example 2.
Detection test:
1. the finished products prepared in examples 1-3 and comparative examples 1-4 were subjected to friction performance testing, and the testing instrument was a MRS-10B four-ball friction wear tester, and GB/T3142-1982, SH/T0189 and SH/T0762 standards were implemented.
2. The finished products prepared in examples 1-3 were taken and the biodegradation rate was recorded according to GB/T19277.
| Project | Example 1 | Example 2 | Example 3 | Comparative example 1 | Comparative example 2 | Comparative example 3 | Comparative example 4 |
| Diameter of ground speckles is mm | 0.24 | 0.22 | 0.23 | 0.26 | 0.34 | 0.27 | 0.29 |
| Biodegradation rate% | 87% | 88% | 87% | / | / | / | / |
Conclusion: the process provided by the application has the advantages of reasonable design and simple operation, and the prepared lubricating oil has excellent wear resistance and antifriction performance, good lubricating performance, good storage stability, biodegradability, no damage to ecological environment, practicability and environmental protection.
Finally, it should be noted that: the foregoing is merely a preferred embodiment of the present application, and the present application is not limited thereto, but may be modified or substituted for some of the technical features described in the foregoing embodiments by those skilled in the art, even though the present application has been described in detail with reference to the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.
Claims (1)
1. A biodegradable composite lubricating oil, characterized in that: the composite lubricating oil comprises the following raw materials in parts by weight: by weight, 5 parts of modified abrasive resistant material, 3.5 parts of additive, 12 parts of phosphoric acid, 17 parts of n-stearyl alcohol, 35 parts of vegetable oil, 2.5 parts of oleic acid surfactant, 2 parts of antioxidant, 2.5 parts of extreme pressure agent, 1.5 parts of defoamer, 5 parts of viscosity regulator and 18 parts of water;
the vegetable oil comprises castor oil and cottonseed oil, wherein the mass ratio of the castor oil to the cottonseed oil is 1:1, a step of;
the modified wear-resistant agent is an oil-soluble microsphere, the microsphere is mainly prepared from a silicon dioxide coated filler, the filler comprises silicon nitride and titanium diboride, and the mass ratio of the silicon nitride to the titanium diboride is 1:2;
the additive is mainly prepared by the reaction of benzotriazole and formaldehyde;
the preparation process of the composite lubricating oil comprises the following specific steps:
(1) Mixing and stirring silicon nitride and titanium diboride for 15min, adding isopropanol, performing ultrasonic dispersion for 25min, adding a mixed solution of ammonia water, deionized water and isopropanol, stirring for 8min, continuously adding tetraethoxysilane and isopropanol, stirring for 12min, adding a pore-forming agent, performing constant-temperature reaction for 1.5 in a water bath at 43 ℃, heating to 88 ℃, performing reflux reaction for 2.5h, performing centrifugal washing after the reaction, and performing vacuum drying to obtain a material A; the pore-forming agent is hexadecylamine;
taking a material A, heating to 350 ℃, calcining for 4 hours, and cooling to room temperature to obtain a wear-resistant material; the temperature rising rate during calcination is 1.5 ℃/min;
(2) Placing the abrasive resistance material in cyclohexane, performing ultrasonic dispersion for 1.1h, adding oleic acid and concentrated sulfuric acid, stirring and reacting for 5h at 73 ℃, filtering and separating, washing with absolute ethyl alcohol, and performing vacuum drying at 75 ℃ to obtain modified abrasive resistance material;
(3) Mixing benzotriazole, water and formaldehyde, stirring uniformly, reacting at 78 ℃ for 32min under heat preservation, cooling, and filtering to obtain an additive;
(4) Adding phosphoric acid and n-octadecanol into the modified abrasive-resistant material and the additive, heating to 110 ℃ for reaction, adding vegetable oil and oleic acid surfactant after the reaction is finished, performing ultrasonic dispersion for 5min, adding an antioxidant, an extreme pressure agent, a defoaming agent, a viscosity regulator and water, uniformly stirring, and standing for 22h to obtain a finished product.
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| CN101812365A (en) * | 2009-11-18 | 2010-08-25 | 湖北大学 | Water-based nano lubricant and preparation method thereof |
| CN109233978A (en) * | 2018-11-15 | 2019-01-18 | 界首永恩机电科技有限公司 | A method of antiwear and antifriction lubricating oil is prepared with additive filling plant oil base nano-fluid |
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| US5490946A (en) * | 1994-10-25 | 1996-02-13 | Exxon Research And Engineering Company | Ashless benzotriazole-thiadiazol compounds as anti-oxidant, anti-wear and friction modifiers in lubricants and the lubricants containing such compounds |
| CN103351927B (en) * | 2013-08-05 | 2016-08-24 | 山东天泰钢塑有限公司 | A kind of multi-functional fully synthetic cutting fluid and preparation method thereof |
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| CN111088093A (en) * | 2019-11-29 | 2020-05-01 | 西南交通大学 | Core-shell-structured lubricating oil additive, preparation method thereof and lubricating oil |
| CN112126499A (en) * | 2020-09-30 | 2020-12-25 | 彭家文 | High-performance lubricating oil and preparation method thereof |
| CN112342076A (en) * | 2020-11-14 | 2021-02-09 | 马鞍山中集瑞江润滑油有限公司 | Environment-friendly extreme pressure metal processing concentrated solution |
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