472 results about "Viscosity index" patented technology

The invention relates to the technical field of grinding fluid, in particular to a grinding fluid performance optimization method and system based on data analysis, and the method comprises the following steps: based on collected grinding fluid data, identifying key parameters influencing the performance of the grinding fluid, carrying out time sequence analysis on cutting speed, temperature, viscosity index and pH value data, determining key change nodes of the performance, and calculating the performance of the grinding fluid according to the key change nodes. And performing reanalysis on the node data to obtain a performance key node identifier. According to the method, by applying time sequence analysis and a real-time feedback mechanism, the adjusting process of the grinding fluid is remarkably optimized, key parameters such as the cutting speed, the temperature, the viscosity index and the pH value in the grinding process are allowed to be continuously monitored and analyzed, performance change nodes are accurately recognized, and the grinding efficiency is improved. The proportion and chemical components of the grinding fluid can be adjusted according to real-time data, so that the optimal performance of the grinding fluid is ensured, the cutting efficiency and the machining quality of a workpiece are enhanced, and the performance of the grinding fluid is kept in the optimal state by continuously optimizing the proportion.

The invention relates to the technical field of lubricating oil, in particular to anti-wear and anti-attrition composite lubricating oil and a preparation method and application thereof. The anti-wear and anti-attrition composite lubricating oil is prepared from the following raw materials: base oil, an anti-wear reagent at extreme pressure, a preservative, an antioxidant, a viscosity index improver and a dispersing agent, the extreme pressure anti-wear agent is obtained by modifying layered molybdenum oxide with metal micelles formed by dodecylamine and wet and then carrying out hydrothermal treatment and vulcanization. The prepared anti-wear and anti-attrition composite lubricating oil has excellent anti-wear and anti-attrition effects and extreme pressure properties, is suitable for the lubrication requirements under high load and harsh conditions, and has a wide application prospect.

The invention belongs to the technical field of hydraulic oil, and particularly discloses super-lubricity energy-saving anti-wear hydraulic oil and a preparation method thereof. The super-lubricity energy-saving anti-wear hydraulic oil is prepared from the following components in parts by weight: 75 to 90 parts of composite base oil, 5 to 7 parts of viscosity index improver, 3 to 5 parts of friction improver, 1 to 3 parts of pour point depressant, 0.005 to 2 parts of anti-rust preservative, 0.003 to 0.02 part of demulsifying agent, 0.01 to 0.03 part of anti-foaming agent, 0.05 to 1 part of clearing agent, 0.05 to 2 parts of antioxidant and 0.05 to 1.5 parts of metal deactivator, the composite base oil is composed of coal base oil, second-class base oil and alkyl naphthalene base oil according to the mass ratio of 5: 4: 1. The super-lubricity energy-saving anti-wear hydraulic oil provided by the invention is high in viscosity index, excellent in shear stability, excellent in oxidation stability, excellent in low-temperature performance and small in friction coefficient, the service life of a product is greatly prolonged, the super-lubricity energy-saving and environment-friendly performance requirements are met, and the super-lubricity energy-saving anti-wear hydraulic oil has a wide application prospect.

The embodiment of the invention provides a building solid waste recycled aggregate production line control method and system, and relates to the technical field of building solid waste recycling, the method comprises the following steps: obtaining a first operation parameter of crushing equipment, and identifying a first characteristic of the crushing equipment influenced by a viscous material according to the first operation parameter; acquiring a second operation parameter of the screening equipment, and identifying a second feature of the screening equipment influenced by the viscous material according to the second operation parameter; acquiring a conveying state of the conveying equipment, and identifying a third feature of the conveying equipment influenced by the viscous material according to the conveying state; performing correlation analysis on the first feature, the second feature and the third feature to obtain a viscous state judgment result of the viscous material; generating a material viscosity index according to the viscosity state judgment result; and according to the material viscosity index, the operation parameters of the crushing equipment, the screening equipment and the conveying equipment are adjusted. The production efficiency and the product quality of the recycled aggregate can be improved, and equipment abrasion and energy consumption are reduced.

The invention provides lubricant base oil and a preparation method thereof, and the preparation method comprises the following steps: carrying out a hydroisomerization reaction on Fischer-Tropsch wax with a distillation range of 400-550 DEG C under the action of a hydroisomerization catalyst, and then carrying out a hydrofining reaction and rectification under the action of a hydrofining catalyst to obtain the lubricant base oil, the preparation method of the hydroisomerization catalyst comprises the following steps: synthesizing a ZSM-48 seed crystal, preparing a ZSM-48 molecular sieve, forming a carrier, loading noble metal ions, roasting and the like. The hydroisomerization catalyst shows high isomerization selectivity for Fischer-Tropsch wax with a distillation range of 400-550 DEG C, and lubricating oil base oil with high viscosity index, low pour point and low cloud point can be prepared from the catalyst under the action of the hydroisomerization catalyst. The method for preparing the lubricant base oil not only has the advantages of high yield and simple preparation process flow, but also can produce high-quality 4cSt base oil and 6cSt base oil at the same time.

The invention discloses a preparation method of a viscosity index improver for extremely cold special oil products, which is an atom transfer radical polymerization method and comprises the following steps: adding monomer ester, a catalyst, a reducing agent and solvent oil into a reaction bottle, uniformly mixing and heating to a specified temperature; adding an initiator required by a polymerization reaction into the reaction bottle at a preset temperature; and then, carrying out heat preservation reaction for a period of time to finish the polymerization reaction to prepare the required viscosity index improver. The viscosity index improver is prepared by adopting an atom transfer radical polymerization method, and has the characteristics of wide range of applicable monomers, easiness in modification of polymer end groups, strong molecular design capability, controllable structure and excellent performance.

The invention belongs to the technical field of oil and gas field development, and particularly relates to a comprehensive evaluation method for the gel breaking degree of gel fracturing fluid. According to the method, a calculation model of the integrity psi after gel breaking of the gel fracturing fluid is established on the basis of the mass of the residual gel separated after gel breaking or the mass of the gel breaking clear liquid in combination with the viscosity of the gel breaking clear liquid, and the gel breaking degree is quantified. According to the method, through weighted calculation of the residual colloid mass or the colloid breaking clear liquid mass and the colloid breaking clear liquid viscosity, a calculation model of the integrity psi after gel breaking of the gel fracturing fluid in different gel breaking stages is established, the gel breaking degree is quantified, and the problem that a traditional single viscosity index cannot be measured or measurement interferes is solved; the problems that the amount of dried solid residues is small, weighing is extremely inconvenient, and large errors are easily caused are solved. The method can adapt to the characteristic difference of different gel breaking stages, the evaluation reliability is remarkably improved, and data support is provided for optimizing the performance of the controlled-release gel breaker.

The invention relates to the technical field of industrial production control, in particular to a production line intelligent control method and device based on the industrial internet and a storage medium, and the method comprises the steps: collecting melt data, mold data and energy consumption data; modeling is carried out on the melt uniformity index, and a dynamic adjustment strategy is generated; a production protection strategy is generated, and meanwhile a speed adjustment threshold value is determined; carrying out feature extraction on the grayscale image of the product surface image, and judging the surface quality state according to a feature extraction result so as to update a dynamic adjustment strategy; constructing an energy consumption index according to the energy consumption data collected in the monitoring period, calculating a comprehensive quality score based on the melt uniformity index, the viscosity index and the energy consumption index in the monitoring period so as to judge the quality state, and comprehensively managing the judgment result of the quality state in the period to send a fault alarm to a user; the production efficiency of the production line is effectively improved.

The invention discloses an engine oil composition. According to an embodiment of the present invention, the engine oil composition comprises: an engine oil complexing agent; a viscosity index improver; a dispersive pour point depressant; a co-emulsifier; and base oil. The engine oil composition provided by the embodiment of the invention has excellent emulsification and icing resistance.

The invention discloses a preparation method of high-temperature transformer oil, and belongs to the technical field of high-temperature transformer oil. Comprising the following steps: 1, carrying out hydrolysis reaction to obtain ricinoleic acid; step 2, carrying out first esterification reaction to obtain a ricinoleic acid esterification product; 3, performing epoxidation reaction to obtain an epoxidized ricinoleic acid esterification product; 4, carrying out ring-opening reaction to obtain ring-opened castor oil; 5, carrying out a second esterification reaction to obtain modified castor oil base oil; and 6, mixing the modified castor oil base oil, a viscosity index improver, an antioxidant, a demulsifying agent and an extreme pressure agent to obtain the high-temperature transformer oil. The invention provides modified castor oil and a preparation method thereof. The high-temperature antioxidant transformer oil prepared by using the modified castor oil as base oil has the characteristics of environmental protection, degradability, high flash point, high breakdown voltage and the like, and also has excellent oxidation stability.

The invention discloses a phosphorus-containing polymethacrylate viscosity index improver as well as a preparation method and application thereof, and belongs to the technical field of lubrication. The viscosity index improver is prepared by the following method: dissolving dodecyl methacrylate and 2-methyl-2-hydroxyethyl acrylate phosphate ester in 2-methyltetrahydrofuran, and then dissolving the dodecyl methacrylate and the 2-methyl-2-hydroxyethyl acrylate phosphate ester in 2-methyltetrahydrofuran; adding azodiisobutyronitrile and dodecyl mercaptan, and purifying the solution with nitrogen; then carrying out polymerization reaction, and introducing air into the reaction system to cool and terminate the reaction; and placing the reaction product in methanol for precipitation so as to achieve the purpose of purification, and finally drying the obtained product so as to obtain the viscosity index improver. The improver can significantly improve the viscosity index of the lubricating oil, improve the low-temperature performance and high-temperature viscosity retention performance of the lubricating oil, and also can well improve the friction reduction and wear resistance of the lubricating oil, so that the improver shows good application prospects and use values in the field of lubrication.

The invention discloses a graphene oxide-containing lubricating oil composition for a heavy-load methanol fuel engine. The graphene oxide-containing lubricating oil composition is prepared from the following raw materials: a dispersing viscosity index agent, an antioxidant, an anti-wear agent, a clearing agent, a dispersing agent and base oil. The dispersing type viscosity index improver P (BMA + LMA + TMA + NVP) copolymer contains a strong N polar group, so that graphene oxide does not need to be continuously modified, surface functional groups do not need to be removed, the cost is greatly reduced, industrial application is facilitated, meanwhile, the dispersing type viscosity index improver is applied to a methanol fuel engine, can be absorbed with combustion products such as methanol and formic acid and is more beneficial to dispersion of graphene, and therefore, the dispersing type viscosity index improver has a good application prospect. The graphene additive is very suitable for being applied to methanol fuel engine lubricating oil and can be applied to a large scale in a new field.

The invention discloses driving oil for new energy hybrid power automobile power and a preparation method thereof, and particularly relates to the technical field of driving oil, the driving oil comprises 70-85% of base oil, 0.8-2.5% of a conductive inhibitor, 1-3% of a nanometer heat conduction agent, 4-8% of a viscosity index improver, 0.1-0.5% of an ion trapping agent, 3-5% of an anti-wear reagent at extreme pressure, 0.5-1.5% of an antioxidant and 0.001-0.01% of an anti-foaming agent. The preparation method comprises the following steps: S1, base oil pretreatment, S2, nano heat conduction agent in-situ modification, and S3, gradient temperature control compounding. Through compounding of the base oil in a specific proportion and the synergistic effect of multiple additives, the problems of insufficient insulativity, easy oxidation, poor viscosity stability, low heat conduction efficiency, poor material compatibility and the like of traditional oil in a hybrid power system are solved, effective protection of a motor and an electric control system is realized, the heat management efficiency is improved, and the service life of the hybrid power system is prolonged. And the service life of oil is prolonged, the maintenance cost is reduced, and the special requirements of power and driving systems of hybrid vehicles are met.

The present invention provides a catalyst grading method, which includes a catalytic reaction unit; in the catalytic reaction unit, along the material flow direction, the total acid content of the catalyst increases first and then decreases; the molar content ratio of the Brönsted acid in the catalyst increases first and then decreases; in the logistics direction, the catalytic reaction unit sequentially includes an adjacent first catalyst layer and a second catalyst layer, in the first catalyst layer, the content of weak acid is greater than the content of medium-strong acid; in the second catalyst layer, the content of weak acid is less than the content of medium-strong acid. The catalyst grading method of the present invention can improve the catalytic effect by grading the catalyst, thereby improving the yield of the base oil, improving the viscosity index of the base oil, and reducing the pour point and cloud point of the base oil.

The invention relates to an environment-friendly degradable gear lubricant as well as a preparation method and application thereof, in particular to an environment-friendly degradable gear lubricant which is prepared from the following components in percentage by weight: 50-60% of base oil, 15-25% of an additive, 23-38% of modified castor oil, 5-10% of an antioxidant and 5-8% of a tackifier, the base oil is prepared from pentaerythritol ester, butylene adipate, butylene terephthalate and a catalyst, and the mass ratio of the pentaerythritol ester to the butylene adipate to the butylene terephthalate is (1.2 to 2.5) to (3.1 to 4.5) to (2 to 3). The vegetable oil biological lubricant can ensure environmental friendliness and degradability while realizing lubrication, and has all characteristics required by lubricating oil, including high viscosity index, low volatility and good lubricity.

The invention discloses a preparation method of environment-friendly plant-based transformer oil, and belongs to the technical field of high-temperature transformer oil. The lubricating oil comprises the following raw materials in percentage by mass: 1-8% of a viscosity index improver, 2-5% of an antioxidant, 0.05-0.2% of a demulsifying agent, 0.1-0.3% of an acid capturing agent and the balance of improved castor oil base oil. Various additives are added, so that the viscosity index and the oil-water separation capacity of the transformer oil can be improved, and hydrolysis can be inhibited; the castor oil is used as base oil, the transformer oil is endowed with degradability, and the castor oil base oil is improved, so that the flash point and breakdown voltage of the transformer oil can be improved; wherein the antioxidant and various groups in molecules can achieve a synergistic effect, so that the oxidation resistance of the transformer oil is remarkably enhanced; therefore, the prepared transformer oil is excellent in comprehensive performance, good in flash point, breakdown voltage and oxidation resistance and degradable, and has important application value in the technical field of high-temperature transformer oil.

The application discloses a method and device for producing bright stock, and the obtained bright stock, which comprises the following steps: (1) contacting heavy oil with a hydrogenation catalyst under the presence of hydrogen, and performing hydrogenation reaction under hydrogenation treatment conditions to obtain a hydrogenation product; (2) performing alkylation reaction of aromatics in the hydrogenation product and C10-C20 olefins in olefin oil under the presence of a strong acid catalyst and under alkylation reaction conditions to obtain an alkylation product; and (3) performing distillation separation on the alkylation product to separate and obtain a heavy fraction with a temperature greater than 500 DEG C as the bright stock product. The method provided by the application expands the raw material source of the bright stock, simplifies the process flow, and is convenient for industrial production; and the prepared bright stock product not only has high viscosity and viscosity index, but also has good low-temperature flow performance and high oxidation stability.

The present invention provides a method for lubricating a combustion engine that is suitable for improving at least one of the following: deposits, sludge, oxidation, and wear. [Solution] A method for lubricating a combustion engine comprises lubricating the combustion engine with a lubricating oil composition, wherein the lubricating oil composition comprises a base oil having a lubricating viscosity having more than about 90 weight percent saturated material, less than about 0.03 weight percent sulfur, and more than about 50 weight percent hydrogenated mineral oil having a viscosity index of less than or equal to about 120; a detergent system having less than about 5 weight percent metal from a non-sulfonate detergent and (ii) a total base number (TBN) of a specific value, giving about 60 to about 85 percent of the total lubricating oil composition TBN; an anti-wear system comprising one or more zinc dihydrocarbyl dithiophosphate compounds; and an antioxidant system comprising one or more phenolic antioxidant compounds, one or more amine antioxidant compounds, or a combination thereof.

The invention belongs to the technical field of lubricating oil, and particularly relates to environment-friendly biodegradable lubricating oil for a hydraulic retarder and a preparation method of the environment-friendly biodegradable lubricating oil. The environment-friendly biodegradable lubricating oil for the hydraulic retarder is prepared from the following components in parts by mass: 80 to 90 parts of base oil, 1 to 3 parts of a cleaning agent, 1 to 3 parts of a dispersing agent, 1 to 2 parts of a viscosity index improver, 0.5 to 2 parts of an anti-wear agent, 0.3 to 1.5 parts of an antioxidant, 0.1 to 0.5 part of an anti-foaming agent and 0.1 to 0.3 part of a pour point depressant, the antioxidant comprises hindered phenolic ester, aromatic amine and zinc thiophosphate in a mass ratio of (3-6): (2-5): 1. The environment-friendly biodegradable lubricating oil for the hydraulic retarder, provided by the invention, is biodegradable, and has excellent high-temperature resistance, oxidation resistance and low-temperature resistance and longer oil change period.

The invention provides a bifunctional ionic liquid monomer, an ionic multifunctional viscosity index improver as well as a preparation method and application of the ionic multifunctional viscosity index improver, and belongs to the technical field of lubricating additives. A series of bifunctional ionic liquid monomers are synthesized through molecular design and have the functions of antifriction, wear resistance and cross-linking agents, then the monomers are copolymerized with long-chain alkyl methacrylate, and the ionic multifunctional viscosity index improver is prepared. The molecular structure of the viscosity index agent simultaneously contains an oleophylic alkyl chain, a rigid benzene ring structure and an ionic functional group, so that the solubility, the viscosity increasing performance and the viscosity-temperature performance of the viscosity index agent in base oil are remarkably improved; a biquaternary ammonium salt structure is introduced into a main chain to realize crosslinking of the polyion liquid, so that the tackifying performance of the polyion liquid is improved, phosphorus, sulfur and nitrogen heteroatoms are introduced, physical and chemical adsorption films can be formed on the metal surface, the friction coefficient and the abrasion volume are effectively reduced in the friction process, and the boundary lubricating performance is enhanced.

The present invention discloses a flow velocity analysis method, system, storage medium, and slurry shield machine for preventing mud cake formation on the excavation face of a slurry shield. The method includes the following steps: obtaining the soil physical properties, mud parameters, and stratum parameters of the current shield excavation; obtaining the soil viscosity index, undrained shear strength, and interfacial shear strength; obtaining the soil adhesion, soil cohesion, and fluid forces acting on soil particles; establishing a mathematical model of the critical flow velocity for different starting methods under different working conditions; obtaining the critical slurry flow velocity for different starting methods under different working conditions; and obtaining the critical flow velocity for preventing mud cake formation. The present invention can adapt to different working conditions and different starting methods, quickly determine the critical flow velocity for preventing mud cake formation, avoid the tedious process of frequently adjusting the mud flow velocity in traditional construction, and significantly improve construction efficiency.

The invention relates to the technical field of lubricating oil, in particular to pitting-corrosion-resistant automobile transmission lubricating oil and a preparation method thereof. The method comprises the following steps: (1) mixing and filtering spiral carbon nanotubes, 2, 5-bis (octyl dithio) thiadiazole and pentaerythritol tetraborate triethanolamine ester, and mixing a filtered substance, an antioxidant and phosphorus-doped NiMn-coated CuO / CF treated by a first coupling agent to obtain a composite extreme pressure agent; (2) mixing a composite extreme pressure agent, a purification dispersant, a defoaming agent, a viscosity index improver and the nano-copper treated by the second coupling agent to obtain a composite additive; and (3) uniformly mixing the composite additive, the hydroxylated poly-alpha-olefin and methylcyclopentane according to the mass ratio of (0.1-0.3): 1: (2-3) to obtain the pitting-corrosion-resistant automobile transmission lubricating oil. The composite extreme pressure agent can sequentially form a plurality of extreme pressure agents to form a multi-layer film, so that the wear resistance of the lubricating oil is improved. The lubricating oil provided by the invention has excellent wear resistance.

The invention provides a synthetic lubricating oil composition and application thereof, and belongs to the technical field of lubricating oil. The synthetic lubricating oil composition comprises base oil, a pour point depressant and a composite additive, the base oil comprises synthetic ester base oil; the synthetic ester base oil consists of low-viscosity synthetic ester and high-viscosity synthetic ester. The composition has ultrahigh viscosity index and low-temperature performance, is diesel engine lubricating oil with very excellent low-temperature performance, passes a graphite flake friction characteristic test and a THOT oxidation test required by TES 439 specifications, and can meet the lubrication requirements of an engine and a transmission system.

The invention discloses an aero-engine lubricating oil composition and a preparation method thereof, and relates to the field of lubricating oil. The composition comprises a composite base oil system, an antioxidant, an anti-wear reagent at extreme pressure, a corrosion inhibitor, an anti-foaming agent and an optional viscosity index improver, the composite base oil system is composed of high-purity pentaerythritol ester, poly-alpha-olefin and dipentaerythritol ester, wherein the high-purity pentaerythritol ester is synthesized by two-step esterification of pentaerythritol, binary fatty acid and monobasic fatty acid; according to the preparation method, a staged fine blending process is adopted, and vacuum dehydration and degassing, nitrogen protection and multi-stage filtration are combined. Through base oil structure innovation, additive purity control, function cooperation and process optimization, the high-temperature oxidation stability, extreme pressure wear resistance, corrosion resistance and rubber compatibility of the lubricating oil are remarkably improved.

The invention provides a PAMA type multifunctional lubricating additive based on carboxyl-aluminum crosslinking, a preparation method and application of the PAMA type multifunctional lubricating additive and a lubricating agent, and belongs to the technical field of lubricating materials. By means of carboxyl functionalization of PAMA, adsorption of the additive on the surface of a metal friction pair can be enhanced, generation of an interface friction film is promoted, cross-linking is conducted by introducing cross-linking sites and a cross-linking agent, and the tackifying performance and friction performance of the additive can be further improved; compared with a traditional lubricating additive which needs to be compounded by a plurality of additives to make up the limitation that a single additive has a single function, the carboxyl-aluminum cross-linked PAMA type multifunctional lubricating additive disclosed by the invention can realize function integration of a viscosity index improver and an antifriction and antiwear additive; the introduction of carboxyl not only can enhance interfacial adsorption and improve friction, but also can be used as a crosslinking site to further enhance the tackifying and viscosity-temperature properties through crosslinking, so that the lubricating oil has excellent viscosity-temperature properties and lubricating properties at the same time.

The invention discloses a low-ash high-performance engine lubricating oil composition. The low-ash high-performance engine lubricating oil composition comprises at least two metal detergents; at least three antioxidants; a sulfur-containing anti-wear agent; at least one friction reducing agent; at least one viscosity index improver; at least one pour point depressant; at least one anti-foaming agent; and at least two base oils. The invention also discloses a preparation method of the lubricating oil composition, which specifically comprises the following steps: adding the base oil into a blending kettle, heating and stirring, adding the anti-foaming agent, the pour point depressant and the viscosity index improver, continuously stirring, sequentially adding the antioxidant, the metal detergent, the sulfur-containing anti-wear agent and the antifriction agent, and uniformly stirring to obtain the lubricating oil composition. According to the invention, ZDDP is compounded with an amine or naphthylamine high-temperature antioxidant to form an antioxidant compound system, and then a chalcogenide anti-wear agent is compounded, so that the oil product has excellent high-temperature oxidation resistance and low-temperature wear resistance at the same time; after the alkyl salicylate detergents with different base numbers are compounded, the ash content of an oil product can be controlled to be not greater than 0.8%.

The invention belongs to the field of special oil for aircraft hydraulic systems, and particularly relates to an aviation hydraulic oil composition as well as a preparation method and application thereof. The aviation hydraulic oil composition comprises the following raw materials in percentage by mass: 15%-20% of a viscosity index improver, 0.01%-1% of an antioxidant, 0.01%-1% of an anti-wear agent, 0.1%-2.0% of an anti-rust agent, 0.01%-0.1% of an anti-foaming agent, 0.01%-0.1% of a coloring agent and the balance of base oil. The aviation hydraulic oil composition disclosed by the invention has excellent low-temperature fluidity, high-temperature stability, anti-rust property and rubber compatibility, particularly has extremely good high-low temperature viscosity stability, and can ensure that an aircraft landing gear and a hydraulic system smoothly operate in an environment with relatively large high-low temperature change amplitude.

The purpose of the invention is both to suppress viscous resistance loss at compressor start (normal temperature) and improve oil film load performance during operation (high temperature) in a refrigerating machine oil and a refrigerating device. A refrigerating machine oil according to the present disclosure is for a refrigerating device in which propane is sealed therein as a refrigerant, said refrigerating machine oil containing an ester-based oil having a viscosity grade of ISO VG32 or less, and a viscosity index improver containing a polymethacrylic acid ester having a C1-18 alkyl substituent, the concentration of the polymethacrylic acid ester being from 0.6 to 6 wt%.

The invention relates to the technical field of industrial gear lubricating oil, in particular to an industrial gear oil composition. The composition comprises the following components in percentage by weight: 10%-30% of rerefined base oil, 5%-40% of synthetic ester or bio-ester base oil, 20%-70% of second-class mineral base oil, 1.0%-5.0% of an anti-wear composite additive and 5.0%-10.0% of a viscosity index improver, wherein the synthetic ester or bio-ester base oil is selected from one or more of diisononanoic acid ester, trimethylolpropane ester, pentaerythritol ester or rapeseed oil ester; the anti-wear composite additive comprises 5.0%-9.9% of trialkyl phosphate, 1.0%-4.9% of alkyl borate or alkyl boric acid polyether, 1.0%-4.9% of alkenyl amine and the balance of mineral oil; the viscosity index improver is a star type or comb type polymethacrylate polymer.

The application belongs to the technical field of shock absorber oil, and particularly relates to a silicon-based shock absorber oil for racing cars and a preparation method thereof. The silicon-based shock absorber oil for racing cars comprises, by mass percentage, 50-60 parts of silicone oil, 40-50 parts of base oil, 3-6 parts of a viscosity index improver, 0.2-0.5 parts of an extreme pressure anti-wear agent, 0.2-0.5 parts of a pour point depressant, and 0.2-0.5 parts of an antioxidant. The extreme pressure anti-wear agent comprises thiazolyl disulfide dimers and poly-methyl acrylate modified nanoscale spherical boron nitride. The silicon-based shock absorber oil for racing cars has excellent viscosity-temperature performance, shear stability, heat resistance, wear resistance, corrosion resistance and high-temperature foam resistance.