CN113999716A - Lubricating oil composition and application thereof - Google Patents
Lubricating oil composition and application thereof Download PDFInfo
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- CN113999716A CN113999716A CN202010747714.4A CN202010747714A CN113999716A CN 113999716 A CN113999716 A CN 113999716A CN 202010747714 A CN202010747714 A CN 202010747714A CN 113999716 A CN113999716 A CN 113999716A
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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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- 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
- C10M169/044—Mixtures of base-materials and additives the additives being a mixture of non-macromolecular and macromolecular compounds
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- 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
- C10M2205/0206—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing acyclic monomers used as base material
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- C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
- C10M2207/02—Hydroxy compounds
- C10M2207/023—Hydroxy compounds having hydroxy groups bound to carbon atoms of six-membered aromatic rings
- C10M2207/026—Hydroxy compounds having hydroxy groups bound to carbon atoms of six-membered aromatic rings with tertiary alkyl groups
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- 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
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- C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
- C10M2207/28—Esters
- C10M2207/282—Esters of (cyclo)aliphatic oolycarboxylic acids
- C10M2207/2825—Esters of (cyclo)aliphatic oolycarboxylic acids used as base material
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- C10M2207/283—Esters of polyhydroxy compounds
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- C10M2207/283—Esters of polyhydroxy compounds
- C10M2207/2835—Esters of polyhydroxy compounds used as base material
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- 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
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- C10M2209/10—Macromolecular compoundss obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- C10M2209/103—Polyethers, i.e. containing di- or higher polyoxyalkylene groups
- C10M2209/104—Polyethers, i.e. containing di- or higher polyoxyalkylene groups of alkylene oxides containing two carbon atoms only
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- C10M2209/10—Macromolecular compoundss obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- C10M2209/103—Polyethers, i.e. containing di- or higher polyoxyalkylene groups
- C10M2209/109—Polyethers, i.e. containing di- or higher polyoxyalkylene groups esterified
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- C10M2213/00—Organic macromolecular compounds containing halogen as ingredients in lubricant compositions
- C10M2213/06—Perfluoro polymers
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- 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
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- 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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- C10M2215/02—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
- C10M2215/065—Phenyl-Naphthyl amines
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- C10M2215/08—Amides
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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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- C10M2215/22—Heterocyclic nitrogen compounds
- C10M2215/223—Five-membered rings containing nitrogen and carbon only
- C10M2215/224—Imidazoles
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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
- C10M2223/02—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions having no phosphorus-to-carbon bonds
- C10M2223/04—Phosphate esters
- C10M2223/043—Ammonium or amine salts thereof
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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
- C10M2223/047—Thioderivatives not containing metallic elements
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- C10M2227/00—Organic non-macromolecular compounds containing atoms of elements not provided for in groups C10M2203/00, C10M2207/00, C10M2211/00, C10M2215/00, C10M2219/00 or C10M2223/00 as ingredients in lubricant compositions
- C10M2227/06—Organic compounds derived from inorganic acids or metal salts
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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
Abstract
The invention provides a lubricating oil composition and application thereof, wherein the lubricating oil composition comprises the following components in parts by weight based on 100 parts by weight: 85.0-98.5 parts by weight of base oil; 0.65-3.0 parts by weight of an antioxidant; 0.01-0.2 parts by weight of an antifoaming agent; 0.5-2.5 parts by weight of an extreme pressure antiwear agent; 0.3-1.5 parts by weight of an anti-abrasion dispersant; 0.2-2.0 parts by weight of a friction modifier; 0.03-0.2 parts by weight of a metal deactivator; 0.03-0.5 part by weight of an antirust agent. The lubricating oil composition disclosed by the invention can meet the requirements of viscosity grades of N68 and N150, has excellent viscosity-temperature performance and low-temperature performance, good extreme-pressure abrasion resistance, oxidation stability, rust prevention, corrosion resistance and foam resistance continuity, can reduce the temperature of an oil product of a top drive gear box, can meet the lubricating requirements of a speed reducer under the working conditions of high load and large torque borne by the speed reducer under the condition of lower rotating speed during drilling of a top drive system, enables the whole speed reducer system to be stable in transmission, small in vibration and low in noise, and can meet the lubricating requirements of the speed reducer of top drive equipment with different drilling depths.
Description
Technical Field
The invention relates to a lubricating oil composition and application thereof in a speed reducer of a top drive system of an oil drilling machine, belonging to the technical field of lubricating oil and lubricating oil additives.
Background
TOP drive, also known as TOP drive drilling unit TDS (TOP DRIVE DRILLING SYSTEM), is the leading-edge technology and equipment for petroleum drilling today and is one of the three major technical achievements for modern drilling equipment. The large torque required by the top drive system in working needs to be realized through a speed reducing system, the speed reducing system is formed by integrating a double-row planetary speed reducing system and a box type gear transmission system, and the torque is transmitted to a drill rod by controlling a power output main shaft in the speed reducing system so as to drive the drill rod of the drilling machine to drill in a rotating mode.
The top drive equipment works under the environment temperature condition of large-range change (the working temperature is-40-65 ℃), the operating environment is severe and changeable, the working condition is complex, and the drilling depth can reach more than 10000 meters. The gear speed of the top drive gearbox can reach 300RPM, the output torque can reach 100kN @, and the gearbox is limited in volume and easy to accumulate heat, which puts very severe performance requirements on the oil: the matched oil product needs lower kinematic viscosity, extremely high viscosity index, extremely low pour point, excellent foam resistance, temperature rise stability, good extreme pressure abrasion resistance and oxidation stability. The oil for the top drive equipment is generally selected from oil products with viscosity grades of No. 68 and No. 150 in winter and summer respectively.
Due to the above special use requirements of the gear oil of the top drive equipment, the research and development and production mechanism of the domestic lubricating oil is difficult to break through the above technical bottlenecks, the oil product is monopolized by foreign companies for a long time, and the domestic companies have no application cases.
Disclosure of Invention
The invention mainly aims to provide a lubricating oil composition and application thereof, wherein the lubricating oil composition has excellent low-temperature performance, wear resistance, rust prevention and corrosion prevention performance, shear stability and anti-foaming performance, and also has a very high viscosity index; the lubricating oil composition can meet the harsh lubricating requirements of the top drive equipment under the working conditions of strong load and large torque, and meanwhile, the lubricating oil composition can achieve a longer service cycle and save the cost.
In order to achieve the above object, the present invention provides a lubricating oil composition comprising:
the lubricating oil composition is characterized in that the base oil comprises one or more of poly alpha-olefin, saturated polyol ester and ester synthetic oil; the viscosity index of the polyalphaolefin is above 150; the viscosity index of the saturated polyol ester and ester synthetic oil is more than 140; the lubricating oil composition comprises 85.0-97.5 parts by weight of base oil.
The lubricating oil composition is characterized in that the antioxidant comprises one or more of a condensate of 2, 6-di-tert-butyl-p-cresol and N-phenyl-alpha-naphthylamine, a condensate of 2, 6-di-tert-butyl-p-cresol and dialkyl diphenylamine, 2, 6-di-tert-butyl-p-cresol, N-phenyl-alpha-naphthylamine, dialkyl diphenylamine, alkyl polycarboxylate derivatives and dithiocarbamate derivatives; the lubricating oil composition comprises 0.8-3.0 parts by weight of an antioxidant.
The lubricating oil composition comprises an antifoaming agent, wherein the antifoaming agent comprises one or more of organosilicate, polyethylene glycol stearyl ether, modified acrylate homopolymer, perfluoropolyether condensate and polysiloxane with the molecular weight of 20000-50000.
The lubricating oil composition provided by the invention is characterized in that the extreme pressure antiwear agent comprises one or more of triaryl phosphate, triaryl phosphite ester, triphenyl thiophosphate, alkyl thiophosphate and alkyl thiophosphate amine salt; the lubricating oil composition comprises 0.8-2.5 parts by weight of extreme pressure antiwear agent.
The lubricating oil composition is characterized in that the extreme pressure antiwear agent is a mixture of triaryl phosphate and triaryl phosphite, or a mixture of triphenyl thiophosphate and isopropyl thiophosphate octadecylamine salt, or a mixture of triphenyl thiophosphate and diisooctyl thiophosphate dodecylamine salt.
The lubricating oil composition provided by the invention is characterized in that the antiwear dispersant comprises one or more of C12-C14 sulfurized alkyl phenate with the base number of more than 265mgKOH/g and C8-C16 boronated alkyl salicylate with the base number of more than 35 mgKOH/g; the lubricating oil composition comprises 0.5-1.5 parts by weight of an antiwear dispersant.
The lubricating oil composition comprises a friction modifier, a lubricant oil and a lubricant oil, wherein the friction modifier comprises one or more of epoxy oleate, diethylene oleate, glycerol oleate, butyl oleate and amide boronate oleate; the lubricating oil composition comprises 0.6-2.0 parts by weight of a friction modifier.
The lubricating oil composition further comprises 0.03-0.3 part by weight of a metal deactivator, wherein the metal deactivator comprises one or more of aminomethyl methylene benzotriazole, methyl benzotriazole derivatives and alkyl dithiothiadiazole.
The lubricating oil composition provided by the invention is characterized in that the metal deactivator comprises one or more of a mixture of butylaminomethylmethylenephriazole and methylbenzotriazole derivatives, a mixture of octylaminomethylmethylenenephotriazole and methylbenzotriazole derivatives, and bisoctyldithiothiadiazole; the lubricating oil composition comprises 0.06-0.2 parts by weight of metal deactivator.
The lubricating oil composition further comprises 0.03-1.0 part by weight of an antirust agent, wherein the antirust agent comprises one or more of alkyl fatty acid amide derivatives, alkenyl succinic acid half-esters and carboxylic acid imidazoline derivatives.
The lubricating oil composition provided by the invention is characterized in that the antirust agent comprises one or more of dodecyl adipic acid diamide, dodecyl sebacic acid diamide, alkenyl succinic acid half ester, dodecenyl succinic acid isooctyl ester and carboxylic acid imidazoline; the lubricating oil composition comprises 0.05-0.5 part by weight of an antirust agent.
In order to achieve the above object, the present invention also provides the use of the above lubricating oil composition in a top drive gearbox for well drilling.
The invention has the beneficial effects that:
the gear lubricating oil for the top drive equipment provided by the invention has very high viscosity index and good low-temperature performance, can effectively reduce the oil temperature of the top drive gear box, and meets the lubricating requirements of harsh working conditions such as low rotating speed, high load, large torque and the like during drilling of a drilling top drive system. Compared with the similar products abroad, the lubricating oil has better extreme pressure wear resistance, bubble resistance persistence, oxidation stability and shear stability, and the service life of the oil product is more than twice of that of the commercial products and can reach 14 months.
Drawings
FIG. 1 is a graph comparing the temperature rise of various lubricating oil compositions of the examples of the present invention.
Detailed Description
The following examples of the present invention are described in detail, and the present invention is carried out on the premise of the technical scheme of the present invention, and detailed embodiments and procedures are given, but the scope of the present invention is not limited to the following examples, and the following examples are experimental methods without specific conditions noted, and generally follow conventional conditions.
The present invention provides a lubricating oil composition comprising:
in one embodiment, the base oil comprises one or more of polyalphaolefins, saturated polyol esters, and synthetic oils of esters. In another embodiment, the polyalphaolefin has a viscosity index of 150 or greater; the viscosity index of the saturated polyol ester and the ester synthetic oil is more than 140; the base oil accounts for 85.0 to 97.5 parts by weight based on 100 parts by weight of the lubricating oil composition.
In one embodiment, all the additive components except the base oil of the lubricating oil composition are added into 100 parts by weight of the base oil in an amount of 0.6-5.0 parts by weight to prepare the lubricating oil for the top drive system speed reducer, wherein the viscosity grade of the lubricating oil is 68 or 150.
In one embodiment, the antioxidant comprises one or more of a condensate of 2, 6-di-tert-butyl-p-cresol and N-phenyl-alpha-naphthylamine, a condensate of 2, 6-di-tert-butyl-p-cresol and dialkyl diphenylamine, an alkyl polycarboxylate derivative and a dithiocarbamate derivative; the antioxidant accounts for 0.8-3.0 parts by weight based on 100 parts by weight of the lubricating oil composition. The alkyl polycarboxylate derivative is, for example, a thiadiazolidinyl polycarboxylate derivative, and the dithiocarbamate derivative is, for example, dibutyl dithiocarbamate.
In one embodiment, the antifoaming agent comprises one or more of organosilicate, polyethylene glycol stearyl ether, modified acrylate homopolymer, perfluoropolyether condensate, and polysiloxane with molecular weight of 20000-50000.
In one embodiment, the extreme pressure antiwear agent comprises one or more of triaryl phosphate, triaryl phosphite, triphenyl thiophosphate and alkyl thiophosphate amine salt; based on 100 parts by weight of the lubricating oil composition, the extreme pressure antiwear agent accounts for 0.8-2.5 parts by weight.
In another embodiment, the extreme pressure antiwear agent is a mixture of triaryl phosphate and triaryl phosphite, or a mixture of triphenyl thiophosphate and an amine salt of alkyl thiophosphate. In yet another embodiment, the extreme pressure antiwear agent is a mixture of triaryl phosphate and triaryl phosphite, or a mixture of triphenyl thiophosphate and isopropyl thiophosphate octadecylamine salt, or a mixture of triphenyl thiophosphate and diisooctyl thiophosphate dodecylamine salt.
In one embodiment, the antiwear dispersant comprises one or more of a C12-C14 sulfurized alkylphenate, a C8-C16 boronated alkylsalicylate; sulfurized alkylphenates are, for example, medium or high base sulfurized alkylphenates, and boronated alkylsalicylates are, for example, high base boronated alkylsalicylates. The base number of the sulfurized alkylphenate having from C12 to C14 is, for example, 265mgKOH/g or more, and the base number of the boronated alkylsalicylate having from C8 to C16 is, for example, 35mgKOH/g or more. The antiwear dispersant accounts for 0.5 to 1.5 parts by weight based on 100 parts by weight of the lubricating oil composition.
In one embodiment, the friction modifier comprises one or more of epoxy oleate, oleic acid diethyl ester, butyl oleate and amide boronate oleate; the friction modifier accounts for 0.6 to 2.0 parts by weight based on 100 parts by weight of the lubricating oil composition.
In one embodiment, the lubricating oil composition further comprises 0.03-0.3 parts by weight of a metal deactivator based on 100 parts by weight of the lubricating oil composition, wherein the metal deactivator comprises one or more of aminomethyl methylene benzotriazole and derivatives thereof, methylbenzotriazole and derivatives thereof, and alkyl dithiothiadiazole.
In another embodiment, the metal deactivator comprises one or more of butylaminomethylmethylenebenzotriazole and methylbenzotriazole derivatives, octylaminomethylmethylenebenzotriazole and methylbenzotriazole derivatives, bisoctyldithiothiadiazoles; the metal deactivator accounts for 0.06-0.2 weight parts based on 100 weight parts of the lubricating oil composition.
In one embodiment, the lubricating oil composition further comprises 0.03-1.0 part by weight of an antirust agent based on 100 parts by weight of the lubricating oil composition, wherein the antirust agent comprises one or more of alkyl fatty acid amide derivatives, alkenyl succinic acid half-esters, carboxylic acid imidazolines and derivatives thereof.
In another embodiment, the rust inhibitor comprises one or more of dodecyl adipic acid diamide, dodecyl sebacic acid diamide, alkenyl succinic acid half ester, dodecyl succinic acid isooctyl ester and carboxylic acid imidazoline; the antirust agent accounts for 0.05 to 0.5 weight part based on 100 weight parts of the lubricating oil composition.
The base oil component and the additive components in the lubricating oil composition are carefully selected, the interaction relationship among the base oil component, the additive components and the base oil and the additives is comprehensively and systematically researched, and the extreme pressure wear resistance, oxidation stability, foam resistance continuity and temperature rise performance of the lubricating oil composition are taken as research focuses, so that the lubricating oil composition disclosed by the invention can meet the lubricating requirements of top drive equipment under the working conditions of large load and large torque.
The viscosity grade of the lubricating oil composition for the top drive gearbox for drilling is 68 or 150, the sulfur content of the lubricating oil composition is 500-2500 ppm (mass fraction), the phosphorus content is 450-1500 ppm (mass), the nitrogen content is 300-700 ppm (mass), and the lubricating oil composition has excellent extreme pressure abrasion resistance, anti-foaming continuity, oxidation stability and temperature rise performance. In addition, the lubricating oil composition meets the requirements of No. 68 and No. 150 viscosity grades, and is added into the base oil of No. 68 and No. 150 viscosity grades in an additive amount of 0.6-5.0 wt% (namely, the additive component is added into the base oil in an additive amount of 0.6-5.0 wt% of the base oil), so that the lubricating oil composition passes a copper sheet corrosion test, a liquid phase corrosion test, a FLENDER anti-foaming test, a rotary oxygen bomb test and an FZG gear machine test.
The lubricating oil composition can reduce the temperature of oil products in the top drive gear box, and can meet the lubricating requirements of the working conditions of strong load and large torque borne by a speed reducer of a top drive system when the drilling depth reaches 10000 m. Under the action of the lubricating oil composition, the whole speed reducer system runs stably, has small vibration and reduced noise, and the service life of oil products is more than twice of that of the commercially available products. The lubricating oil composition is convenient to prepare, has excellent performance and wide popularization and application prospects, and can generate good economic benefits and social benefits when being applied to the field of drilling.
The lubricating oil composition for the top drive system speed reducer of the oil drilling machine can be prepared according to the following method: adding one or more base oils into a stainless steel blending kettle with a stirrer according to the viscosity grade of the composition, then adding an antioxidant, an antifoaming agent, an extreme pressure antiwear agent, an antiwear dispersant and a friction modifier into the blending kettle according to the proportion, heating to 50-65 ℃, stirring for 3-4 hours until the mixture is completely dissolved, uniform and transparent. In one embodiment, the additive component further comprises a defoamer, a rust inhibitor.
The present invention employs various test methods in the laboratory for simulation evaluation in order to screen base oil and additive components. The method comprises a lubricating oil extreme pressure performance measuring method (GB/T3142), a lubricating oil anti-wear performance measuring method (NB/SH/T0189), a lubricating oil anti-foaming performance measuring method (GB/T12579 or ASTM D892), a lubricating oil bearing capacity measuring method (Timenken method) (GB/T11144 or SH/T0532), a lubricating oil air release value measuring method (SH/T0308), a lubricating oil oxidation stability measuring method (rotating aeroelastic method) (SH/T0193) and a four-ball temperature rise test.
To evaluate the performance of the lubricating oil compositions, FZG Gear machine tests (ASTM D5182 or DIN 51354), FLENDER foam resistance tests (ISO/12152) and four ball temperature rise tests were used. The four-ball tester used in the temperature rise test is manufactured by Germany Hansa Press company, and adopts a Pv1454-ARKL test method developed by popular company. The test oil was tested on a thrust ball bearing, which was driven by a four-ball tester. The test rotating speed, the load and the test time can be set according to specific conditions, the temperature change of the lubricating oil is tested and recorded by means of the thrust roller bearing temperature adapter, and the temperature change value of the oil product is obtained after the test is finished and is called as the steady-state temperature of the oil product. The temperature change condition of the oil in the specific transmission device can be reflected through the steady-state temperature change quantity.
The technical solution of the present invention is further described in detail by the following specific examples. In the examples, component a represents a base oil, component B represents an extreme pressure anti-wear agent, component C represents a metal deactivator, component D represents an antioxidant, component E represents an antirust agent, component F represents an anti-wear type dispersant, component G represents a friction modifier, and component H represents an anti-foaming agent.
Example 1
Lubricating oil composition (I) comprising: 96.98 wt% of high viscosity index polyalphaolefin synthetic oil PAO and trimethylolpropane oleate (component a), 0.50 wt% of triphenyl thiophosphate and 0.30 wt% of diisopropyl phosphate octadecylamine (component B), 0.01% of dioctyldithiophthiadiazole and 0.05% of dibutylaminomethylbenzotriazole (component C), 0.30 wt% of diisobutyl diphenylamine and 0.60 wt% of N-phenyl-alpha-naphthylamine (component D); 0.03% by weight of dodecyl adipic acid diamide and 0.06% by weight of dodecyl sebacic acid diamide (component E), 0.55% by weight of C8-C16 high-base boronized alkyl salicylate (component F), 0.30% by weight of diethylene oleate and 0.30% by weight of glycerol oleate (component G), 0.01% by weight of 20000-doped 50000 polysiloxane and 0.01% by weight of polyethylene glycol stearyl ether (component H). The sum of the above components is 100 wt%. Lubricating oil composition (II) the same composition (I) was used except that 0.01% by weight of 20000-50000-polysiloxane and 0.01% by weight of polyethylene glycol stearyl ether were replaced with 0.02% by weight of a perfluoropolyether condensate as component (H). Lubricating oil composition (III) the same as composition (I) except that 0.01% by weight of component (H) of a polysiloxane having a molecular weight of 20000-doped 50000 and 0.01% by weight of polyethylene glycol stearyl ether were replaced with 0.02% by weight of a modified acrylate homopolymer. The main properties of the compositions (I), (II) and (III) are shown in Table 1.
Table 1 test results for the composition of example 1
Note: the aging oil is an oil sample obtained by putting a copper sheet and a steel sheet at 90 ℃ and oxidizing the copper sheet and the steel sheet in an oven for 216 hours.
The results in table 1 show that (1) the anti-foaming agents with different structures and the proportion collocation have great influence on the anti-foaming performance (including the anti-foaming performance of the aged oil) and the air release performance of the oil; (2) the product of the invention uses the anti-foaming agent with a special structure and is matched with the anti-foaming agent in a proper proportion, so that the new oil and the aged oil have better anti-foaming characteristics at the same time.
Example 2
Lubricating oil composition (IV) comprising: 96.67% by weight of high-viscosity index polyalphaolefin synthetic oil PAO and pentaerythritol adipate oleate (component A), 0.4% by weight of triphenyl thiophosphate and 0.6% by weight of diisooctyl thiophosphate (component B), 0.01% of dioctyldithiophthalide and 0.05% of dibutylaminomethylmethylene benzotriazole (component C), 0.50% by weight of 2, 6-di-tert-butyl-p-cresol and 0.50% by weight of diisobutyl dithiocarbamate (component D); 0.05 wt% of carboxylic acid imidazoline derivative (component E), 0.80 wt% of C8-C16 high-base-number boronized alkyl salicylate (component F), 0.20 wt% of oleic acid diethylene glycol ester and 0.20 wt% of oleic acid glycerol ester (component G), 0.02 wt% of modified acrylate homopolymer (component H), wherein the sum of the above components is 100 wt%. Lubricating oil composition (V) was the same as composition (IV) except that component (D) 0.50% by weight of 2, 6-di-t-butyl-p-cresol and 0.5% by weight of diisobutyldithiocarbamate were replaced with 0.50% by weight of 2, 6-di-t-butyl-p-cresol and 0.5% by weight of a dibutyldiphenylamine condensate. The main properties of compositions (IV) and (V) are shown in Table 2.
Table 2 main properties of the composition of example 2
The results in Table 2 show that (1) under the condition that the phosphorus-containing anti-wear additives are the same, antioxidants with different structures have great influence on the extreme pressure performance of oil products, and the anti-wear and the anti-oxidation are a pair of contradictions and need to be balanced in the formula; (2) after the 2, 6-di-tert-butyl-p-cresol and the diisobutyl dithiocarbamate are compounded, the synergistic effect in a rotating oxygen bomb test is better than that of a condensate of the 2, 6-di-tert-butyl-p-cresol and the dibutyl diphenylamine.
The dialkyl dithiocarbamate compound is a ligand with strong coordination capacity, on one hand, the dialkyl dithiocarbamate compound can generate chemical reaction with the surface of metal, and is easy to form a complex boundary lubricating film containing organic nitrogen, sulfur, sulfide and the like, has a certain anti-wear effect, and more importantly, prevents the oxidation of an oxidant to the metal; on the other hand, sulfur and nitrogen atoms in the compounds have uncoordinated electrons, so that the compounds have reducibility, and oxidation of oil products by an oxidant is avoided.
Example 3:
lubricating oil composition (VI) comprising: 96.27% by weight of high-viscosity index polyalphaolefin synthetic oil PAO and neopentyl glycol dioleate (component a), 0.50% by weight of triphenylphosphorothionate and 0.50% by weight of octadecyl amine salt of diisopropyl phosphate (component B), 0.03% of dioctyldithiophthalizole and 0.05% of dibutylaminomethyltolyltriazole (component C), 0.50% by weight of 2, 6-di-tert-butyl-p-cresol and 0.5% by weight of diisobutyldithiocarbamate (component D); 0.05% by weight of dodecyl adipic acid diamide and 0.03% by weight of carboxylic acid imidazoline derivative (component E), 0.75% by weight of medium-alkali boronized alkylsalicylate (component F), 0.2% by weight of oleic acid diethylene glycol ester, 0.3% by weight of oleic acid glycerol ester, 0.3% by weight of boronized amide oleate (component G), 0.01% by weight of perfluoropolyether condensate and 0.01% by weight of polyethylene glycol stearyl ether, the sum of the above components amounting to 100% by weight. The lubricating oil composition (VII) was the same as the composition (VI) except that the component (G) was replaced with 0.2% by weight of diethylene oleate, 0.30% by weight of glycerol oleate, 0.3% by weight of boroamide-type oleate, 0.2% by weight of ethylene glycol oleate, 0.30% by weight of decaethylene glycol acrylate, and 0.3% by weight of boroamide-type oleate. Lubricating oil composition (VIII) component A was increased from 96.27% to 96.57% with the exception that 0.75% by weight of component (F) of C8-C16 overbased boroalkylsalicylate was replaced by 0.45% by weight of C8-C16 overbased boroalkylsalicylate, and the remainder was the same as composition (VI). The properties of the compositions (VI), (VII) and (VIII) are shown in FIG. 1.
The lubricating oil of the top drive system speed reducer is subjected to shearing and compression to generate heat in the using process, and the temperature is increased, so that the viscosity of an oil product is reduced, and the bearing capacity of the lubricating oil is influenced, and therefore, the temperature rise of the oil product needs to be mainly investigated.
As can be seen from fig. 1: (1) the types of different friction modifiers have certain influence on the temperature rise of oil products; (2) the compounding effect of the three friction modifiers of the diethylene oleate, the glycerol oleate and the boroamide oleate used in the invention is better than that of the ethylene glycol oleate, the dodecyl acrylate and the boroamide oleate, and the temperature rise of oil products can be effectively controlled; (3) the use proportion of the antiwear dispersant in the invention is also an important influence factor for controlling the temperature rise of oil products and needs to be controlled.
Example 4:
lubricating oil composition (IX) comprising: 96.67% by weight of high-viscosity-index polyalphaolefin synthetic oil PAO and diisodecyl adipate (component A), 0.25% by weight of triphenyl thiophosphate, 0.25% by weight of octadecyl phosphate, 0.5% by weight of diisooctyl dithiophosphate (component B), 0.06% by weight of diisooctyl aminomethyl methylene benzotriazole, 0.02% by weight of dioctyldithiodiazole (component C), 0.30% by weight of 2, 6-di-tert-butyl-p-cresol, 0.30% by weight of butyloctyldiphenylamine, 0.15% by weight of N-phenyl-a-naphthylamine, 0.3% by weight of methylenedibutyldithiocarbamate (component D), 0.03% by weight of carboxylic acid imidazoline derivative (component E) and 0.03% by weight of dodecylsebacic acid diamide (component E), 0.10% by weight of C12-C14 high-base-number sulfurized alkylphenate and 0.50% of C8-C16 alkyl salicylate (component F), 0.20% by weight of glycerol oleate, 0.30% by weight of boronated diglycerol oleate (component G), 0.04% by weight of modified acrylate homopolymer (component H), the results of the evaluation of composition (IX) are shown in Table 3, and the results of the temperature rise test are shown in Table 4.
TABLE 3 example 4 comparative evaluation results of composition (IX) with commercially available foreign oils
Note: the aging oil is an oil sample obtained by putting a copper sheet and a steel sheet at 90 ℃ and oxidizing the copper sheet and the steel sheet in an oven for 216 hours.
Table 4 example 4 temperature rise test evaluation of composition (IX) with a commercially available foreign oil
| Item | Foreign oil | Composition IX |
| Ambient temperature/. degree.C | 21.9 | 21.6 |
| Steady state temperature/. degree.C | 143.4 | 136.9 |
As can be seen from Table 4, the temperature increase (difference between steady-state temperature and ambient temperature) of lubricating oil composition (IX) of the present invention was lower than that of foreign oils during the test period, indicating that the temperature rise of the oils could be well controlled by the oils under investigation.
The test results show that the lubricating oil composition has better extreme pressure anti-wear property, anti-foaming persistence, oxidation stability and shear stability compared with similar products abroad. Furthermore, the lubricating oil composition has more excellent temperature rise stability, and can meet the lubricating requirement of a speed reducer of a top drive system.
The present invention is capable of other embodiments, and various changes and modifications may be made by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (13)
1. A lubricating oil composition, characterized in that the lubricating oil composition comprises:
2. the lubricating oil composition of claim 1, wherein the base oil comprises one or more of polyalphaolefins, saturated polyol esters, and synthetic oils of esters; the viscosity index of the polyalphaolefin is above 150; the viscosity index of the saturated polyol ester and ester synthetic oil is more than 140; the lubricating oil composition comprises 85.0-97.5 parts by weight of base oil.
3. The lubricating oil composition of claim 1, wherein the antioxidant comprises one or more of a condensate of 2, 6-di-tert-butyl-p-cresol and N-phenyl- α -naphthylamine, a condensate of 2, 6-di-tert-butyl-p-cresol and dialkyldiphenylamine, 2, 6-di-tert-butyl-p-cresol, N-phenyl- α -naphthylamine, dialkyldiphenylamine, an alkyl polycarboxylate derivative, and a dithiocarbamate derivative; the lubricating oil composition comprises 0.8-3.0 parts by weight of an antioxidant.
4. Lubricating oil composition according to claim 1, characterized in that the anti-foaming agent comprises one or more of organosilicates, polyethylene glycol stearyl ethers, modified acrylate homopolymers, perfluoropolyether condensates, polysiloxanes having a molecular weight of 20000-50000.
5. The lubricating oil composition of claim 1, wherein the extreme pressure antiwear agent comprises one or more of triaryl phosphate, triaryl phosphite, triphenyl thiophosphate, alkyl thiophosphate, and alkyl thiophosphate amine salt; the lubricating oil composition comprises 0.8-2.5 parts by weight of extreme pressure antiwear agent.
6. The lubricating oil composition of claim 5, wherein the extreme pressure antiwear agent is a mixture of triaryl phosphate and triaryl phosphite, or a mixture of triphenyl thiophosphate and octadecyl amine salt of diisopropyl thiophosphate, or a mixture of triphenyl thiophosphate and diisooctyl thiophosphate, or a mixture of triphenyl thiophosphate and dodecaamine salt of diisooctyl thiophosphate.
7. The lubricating oil composition of claim 1, wherein the antiwear dispersant comprises one or more of a C12-C14 sulfurized alkylphenate having a base number of greater than 265mgKOH/g, a C8-C16 boronated alkylsalicylate having a base number of greater than 35 mgKOH/g; the lubricating oil composition comprises 0.5-1.5 parts by weight of an antiwear dispersant.
8. The lubricating oil composition of claim 1, wherein the friction modifier comprises one or more of epoxy oleate, diethylene oleate, glycerol oleate, butyl oleate, and amide-type borated oleate; the lubricating oil composition comprises 0.6-2.0 parts by weight of a friction modifier.
9. The lubricating oil composition of claim 1, wherein the metal deactivator comprises one or more of aminomethyl methylene benzotriazole, methyl benzotriazole derivatives, and alkyl dithiothiadiazoles.
10. The lubricating oil composition according to claim 9, wherein the metal deactivator comprises one or more of butylaminomethylmethylenebenztriazole and a methylbenzotriazole derivative, octylaminomethylmethylenebenzenetriazole and a methylbenzotriazole derivative, and bisoctyldithiothiadiazole; the lubricating oil composition comprises 0.06-0.2 parts by weight of metal deactivator.
11. The lubricating oil composition of claim 1, wherein the rust inhibitor comprises one or more of alkyl fatty acid amide derivatives, alkenyl succinic acid half esters, carboxylic acid imidazoline derivatives.
12. The lubricating oil composition of claim 11, wherein the rust inhibitor comprises one or more of dodecyl adipic acid diamide, dodecyl sebacic acid diamide, alkenyl succinic acid half ester, dodecyl succinic acid isooctyl ester, carboxylic acid imidazoline; the lubricating oil composition comprises 0.05-0.5 part by weight of an antirust agent.
13. The lubricating oil composition of any one of claims 1-12 for use in a top drive gearbox lubricating oil for well drilling.
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