CN117511636A - Power steering oil and preparation method and application thereof - Google Patents

Power steering oil and preparation method and application thereof Download PDF

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Publication number
CN117511636A
CN117511636A CN202311472652.0A CN202311472652A CN117511636A CN 117511636 A CN117511636 A CN 117511636A CN 202311472652 A CN202311472652 A CN 202311472652A CN 117511636 A CN117511636 A CN 117511636A
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China
Prior art keywords
power steering
parts
steering oil
oil
extreme pressure
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Pending
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CN202311472652.0A
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Chinese (zh)
Inventor
蒋惠宇
桃春生
王清国
许扬
李乐
刘茜
张皓月
麻志国
张悦
陆莹
张婉庭
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FAW Jiefang Automotive Co Ltd
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FAW Jiefang Automotive Co Ltd
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Priority to CN202311472652.0A priority Critical patent/CN117511636A/en
Publication of CN117511636A publication Critical patent/CN117511636A/en
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    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M169/00—Lubricating compositions characterised by containing as components a mixture of at least two types of ingredient selected from base-materials, thickeners or additives, covered by the preceding groups, each of these compounds being essential
    • C10M169/04—Mixtures of base-materials and additives
    • C10M169/048—Mixtures of base-materials and additives the additives being a mixture of compounds of unknown or incompletely defined constitution, non-macromolecular and macromolecular compounds
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
    • C07F5/00—Compounds containing elements of Groups 3 or 13 of the Periodic System
    • C07F5/02—Boron compounds
    • C07F5/04—Esters of boric acids
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    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2205/00—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions
    • C10M2205/02—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing acyclic monomers
    • C10M2205/022—Ethene
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    • C10M2205/00—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions
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    • C10M2205/024—Propene
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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
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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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    • C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant compositions
    • C10M2215/086—Imides
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    • C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant compositions
    • C10M2215/22—Heterocyclic nitrogen compounds
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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
    • C10M2223/042—Metal salts thereof
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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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    • 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
    • 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
    • C10M2223/049—Phosphite
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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
    • C10M2227/04—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 having a silicon-to-carbon bond, e.g. organo-silanes
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    • 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
    • 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
    • C10M2227/061—Esters derived from boron
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    • 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
    • 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
    • C10M2229/041—Siloxanes with specific structure containing aliphatic substituents
    • 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
    • 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
    • C10M2229/042—Siloxanes with specific structure containing aromatic substituents
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    • 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
    • C10N2030/02—Pour-point; Viscosity index
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
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    • C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
    • C10N2030/06—Oiliness; Film-strength; Anti-wear; Resistance to extreme pressure
    • 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
    • C10N2030/40—Low content or no content compositions
    • C10N2030/42—Phosphor free or low phosphor content compositions
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    • C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
    • C10N2030/40—Low content or no content compositions
    • C10N2030/43—Sulfur free or low sulfur content compositions
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    • 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

Abstract

The invention provides power steering oil and a preparation method and application thereof, wherein the power steering oil comprises, by weight, 72-97 parts of base oil, 0.1-2 parts of extreme pressure antiwear agent, 2-15 parts of viscosity index improver, 0.1-1 part of antioxidant, 0.1-0.5 part of defoamer and 1-10 parts of dispersant. The power steering oil provided by the invention has the advantages of simple formula, low content of sulfur and phosphorus elements, no content of zinc elements, environmental protection, excellent extreme pressure wear resistance, wider applicable temperature range and good viscosity retention capability.

Description

Power steering oil and preparation method and application thereof
Technical Field
The invention belongs to the field of lubricating oil, and particularly relates to power steering oil and a preparation method and application thereof, in particular to power steering oil with good wear resistance and a preparation method and application thereof.
Background
The commercial vehicle generally adopts a hydraulic power steering system, and common hydraulic oil, automatic transmission fluid, no. 6 or No. 8 hydraulic transmission oil, special power steering oil and the like are filled as power transmission media so as to ensure the normal and efficient operation of the power steering system.
The power steering system has higher requirements on cleanliness, and metal abrasive dust generated by friction and abrasion not only affects the cleanliness of the system and generates abnormal sound and affects the boosting effect, but also has catalytic oxidation effect on oil products. Meanwhile, the working temperature of the power steering oil is higher, generally about 120 ℃, and the long-term high-temperature working environment can promote the oxidation and decay of the oil product and shorten the service life of the oil product. Therefore, extreme pressure wear resistance, oxidation resistance, viscosity-temperature performance, anti-foaming performance and the like are required to be comprehensively considered in the development of the power steering oil formula.
Along with the improvement of the current energy-saving and environment-friendly requirements, the environmental friendliness of the power steering oil must be improved, the traditional power steering oil mostly adopts sulfur, phosphorus, zinc element compounds and the like as additives, and the additives have excellent functions of resisting oxidation, corrosion, abrasion, extreme pressure and the like, however, the additives have bad smell and certain toxicity, and cause environmental and air pollution in the use process, so that the traditional power steering oil formula is required to be improved, and the environment-friendly and abrasion-resistant commercial vehicle power steering oil is developed.
Chinese patent CN101418007a discloses a sulfur-, boron-, and nitrogen-containing compound and a preparation method thereof, and the compound has good oil solubility, corrosion resistance, oxidation resistance, and extreme pressure antiwear property, and can be widely used in gear oil and hydraulic oil. The invention has higher sulfur content in lubricating oil, and has general corrosion protection performance on copper-containing parts. Chinese patent CN115873028A discloses a sulfur-free and phosphorus-free organoboron compound, its preparation method and application. The organic boron compound has excellent oxidation resistance, wear resistance and antifriction performance. However, the organoboron compound is relatively complicated to prepare.
The existing power steering oil has the problems of poor environmental protection and poor wear resistance. Therefore, how to provide a power steering oil with good antiwear performance and low contents of sulfur, phosphorus and zinc elements becomes a problem to be solved urgently.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to provide power steering oil and a preparation method and application thereof, in particular to power steering oil with good wear resistance and a preparation method and application thereof. The power steering oil provided by the invention has the advantages of simple formula, low content of sulfur and phosphorus elements, no content of zinc elements, environmental protection, excellent extreme pressure wear resistance, wider applicable temperature range and good viscosity retention capability.
In order to achieve the aim of the invention, the invention adopts the following technical scheme:
in a first aspect, the invention provides a power steering oil, which comprises, by weight, 72-97 parts of base oil, 0.1-2 parts of extreme pressure antiwear agent, 2-15 parts of viscosity index improver, 0.1-1 part of antioxidant, 0.1-0.5 part of defoamer and 1-10 parts of dispersant.
The base oil may be 72 parts, 75 parts, 80 parts, 85 parts, 90 parts, 95 parts, 97 parts, etc., the extreme pressure antiwear agent may be 0.1 parts, 0.5 parts, 1 parts, 1.5 parts, 2 parts, etc., the viscosity index improver may be 2 parts, 3 parts, 4 parts, 5 parts, 6 parts, 7 parts, 8 parts, 9 parts, 10 parts, 11 parts, 12 parts, 13 parts, 14 parts, 15 parts, etc., the antioxidant may be 0.1 parts, 0.2 parts, 0.3 parts, 0.4 parts, 0.5 parts, 0.6 parts, 0.7 parts, 0.8 parts, 0.9 parts, or 1 part, etc., the antifoaming agent may be 0.1 parts, 0.2 parts, 0.3 parts, 0.4 parts, or 0.5 parts, etc., and the dispersant may be 1 part, 2 parts, 3 parts, 4 parts, 5 parts, 6 parts, 7 parts, 8 parts, 9 parts, or 10 parts, etc., but the above-mentioned values may not be applied thereto.
The extreme pressure antiwear agent and the viscosity index improver are selected, so that the antiwear performance of the product can be effectively improved, the viscosity-temperature characteristic is ensured, the product has a wider applicable temperature range and good viscosity retention capacity, and meanwhile, the product is simple in composition formula, low in sulfur-phosphorus element content, free of zinc element content and environment-friendly.
Preferably, the base oil comprises a group iii base oil and/or a group IV base oil.
Preferably, the base oil has a kinematic viscosity at 100 ℃ of no more than 8mm 2 /s。
Preferably, the extreme pressure antiwear agent comprises a borate derivative and a phosphate.
According to the invention, by adopting the combination of the two specific components and the synergistic effect, the antiwear performance of the product can be effectively improved, the contents of sulfur, phosphorus and zinc in the formula can be effectively reduced, and the environmental friendliness is improved.
Preferably, the borate derivative is a benzotriazole group-containing borate derivative, and the structure of the borate derivative is as follows:
wherein n is selected from integers from 2 to 16 (e.g., 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, or 16), R 1 、R 2 Independently selected from C2-C16 alkyl (e.g., ethyl, n-propyl, isopropyl, n-butyl, n-pentyl, n-hexyl, etc.).
The above-mentioned borate derivatives can be prepared by a method conventional in the art, and the present invention is not limited thereto.
Boric acid esters are widely appreciated as novel multifunctional lubricating oil additives. However, boric acid esters are susceptible to hydrolysis, which limits their practical use. The tendency of borates to hydrolyze is essentially due to sp of boron atoms 2 Hybridization, while there is an empty p-orbit, the empty p-orbit is very easy to accept water and other nucleophilic reagents with unshared electron pairs to attack and hydrolyze boric acid esters, and the final product of hydrolysis is alcohol and boric acid.
In the invention, the heteroatom is introduced into the structure of the borate, and the lone pair electron on the heteroatom is utilized to occupy the empty p orbit of the boron atom to form a coordination bond, thereby effectively preventing the attack of water molecules and achieving the purpose of hydrolysis resistance. On the other hand, structural groups with long carbon chains are introduced into the structure of the borate, so that the steric hindrance around the boron atoms is increased, the attack of water molecules is blocked, and the hydrolytic resistance is improved.
In the invention, the hydrolytic stability of the nitrogen-containing coordination borate is greatly higher than that of the ordinary borate without nitrogen and the borate containing hindered phenol groups; and the hydrolysis stability of the internally coordinated borate is obviously better than that of the externally coordinated borate. The hydrolytic stability of internally coordinated borates is related to the strength of the N.fwdarw.B internal coordination bonds in the molecule and increases with the growth of the alkyl carbon chain attached to the N atom; meanwhile, the six-membered ring coordinated in the molecule is more stable than the five-membered ring structure.
Preferably, the phosphate is selected from any one or a combination of at least two of butyl isooctyl dodecamine phosphate, alkoxy phosphate or alkoxy phosphite, for example, butyl isooctyl dodecamine phosphate and alkoxy phosphate, alkoxy phosphate and alkoxy phosphite or butyl isooctyl dodecamine phosphate and alkoxy phosphite, etc., but not limited to the above-listed combinations, other non-listed combinations within the above-listed combinations are equally applicable.
Preferably, the viscosity index improver comprises an ethylene propylene copolymer and/or a polymethacrylate.
Preferably, the antioxidant comprises benzotriazole and/or tolyltriazole.
Preferably, the defoamer comprises any one or a combination of at least two of methyl silicone oil, tolyl silicone oil or methyl siloxane.
Preferably, the dispersant comprises any one or a combination of at least two of a succinimide, a bis-succinimide, or a polyisobutylene succinate.
In a second aspect, the present invention provides a method for preparing a power steering oil as described above, the method comprising the steps of:
and mixing and stirring the base oil, the extreme pressure antiwear agent, the viscosity index improver, the antioxidant, the defoamer and the dispersant to obtain the power steering oil.
Preferably, the temperature of the stirring is 50-60 ℃ and the time is 4-6h.
The temperature may be 50 ℃, 51 ℃, 52 ℃, 53 ℃, 54 ℃, 55 ℃, 56 ℃, 57 ℃, 58 ℃, 59 ℃,60 ℃ or the like, and the time may be 4 hours, 4.5 hours, 5 hours, 5.5 hours, 6 hours or the like, but the present invention is not limited to the above-mentioned values, and other values not mentioned in the above-mentioned value ranges are equally applicable.
In a third aspect, the present invention also provides the use of a power steering oil as described above in the preparation of an automotive lubricating oil.
Compared with the prior art, the invention has the following beneficial effects:
the invention provides power steering oil, which can effectively improve the antiwear performance of a product and ensure the viscosity-temperature characteristic by selecting a specific extreme pressure antiwear agent and a viscosity index improver, so that the power steering oil has a wider applicable temperature range and good viscosity retention capability, and meanwhile, the product has the advantages of simple composition formula, low content of sulfur and phosphorus elements, no content of zinc elements and environment friendliness.
Detailed Description
In order to further describe the technical means adopted by the present invention and the effects thereof, the following describes the technical scheme of the present invention in combination with the preferred embodiments of the present invention, but the present invention is not limited to the scope of the embodiments.
In the following example, polymethacrylate was purchased from Messaging petrochemicals, model SCR-178A; the other reagents are all conventional and commercially available
The borate derivative is synthesized according to the following method:
1mol of chloroethanol and 1mol of CH 3 (CH 2 ) n Dissolving OH and 3mol boric acid in toluene solvent, adding 1mL concentrated hydrochloric acid, heating to 60deg.C for reaction for 4 hr, and distilling under reduced pressure to separate toluene
Will 1molDissolving in benzene solvent, adding 1mL of sodium hydroxide, adding 1mol of benzotriazole in batches, heating to 40 ℃ for refluxing for 4 hours, washing with water, drying and removing the solvent to obtain the borate derivative containing the benzotriazole group.
The extreme pressure antiwear agent used in the examples below is structured as shown in the table below:
example 1
The embodiment provides a power steering oil, which comprises the following raw materials in percentage by weight:
89.8% of base oil (III base oil), 1.3% of extreme pressure antiwear agent (B1 and di-n-butyl phosphite in a mass ratio of 3:1), 2.6% of viscosity index improver (polymethacrylate), 0.5% of antioxidant (benzotriazole), 0.3% of defoamer (toluene silicone oil) and 5.5% of dispersant (bissuccinimide).
The preparation method comprises the following steps:
mixing B1 with alkoxy phosphite, stirring at 30 ℃ for 6 hours to obtain an extreme pressure antiwear agent mixture, then mixing with other raw materials, and stirring at 60 ℃ for 6 hours to obtain a product.
Example 2
This example provides a power steering oil that is identical to example 1 except that B1 is replaced with an equal amount of B2.
Example 3
This example provides a power steering oil in the same composition as in example 1 except that B1 was not included and some of the composition was reduced to di-n-butyl phosphite.
Example 4
This example provides a power steering oil that is identical to example 1 except that the composition does not contain di-n-butyl phosphite, and a reduced portion is assigned to B1.
Example 5
This example provides a power steering oil identical to example 1 except that B1 was replaced with an equivalent amount of calcium cetyl borate.
Example 6
This example provides a power steering oil that is identical to example 1 except that the alkoxyphosphite is replaced with an equivalent amount of zinc dialkyldithiophosphate.
And (3) effect test:
the products provided by the above examples and commercially available power steering oils were tested for viscosity index, maximum bite-free load, plaque diameter and element content by the following methods:
GB/T2541-1981 petroleum product viscosity index table;
GB/T12583-1998 lubricant extreme pressure Performance assay (four-ball method);
the abrasion resistance of NB/SH/T0189-2017 lubricating oil is measured by a four-ball method;
measurement of various elements in GB/T17476-2023 lubricating oils and base oils inductively coupled plasma emission spectrometry.
The results were as follows:
the product provided by the invention has excellent antiwear performance, extreme pressure performance and viscosity-temperature performance, is obviously superior to the prior art, and meanwhile, the sulfur and phosphorus element contents of the finished oil are lower than those of the commercial oil, and the product does not contain zinc element; comparing examples 1 and 3-6, the invention can effectively improve the antiwear performance of the product by adopting the specific boric acid ester derivative and phosphate to compound and act synergistically.
The applicant states that the power steering oil of the present invention, and its preparation method and application, are illustrated by the above examples, but the present invention is not limited to, i.e., does not mean that the present invention must be practiced in dependence upon the above examples. It should be apparent to those skilled in the art that any modification of the present invention, equivalent substitution of raw materials for the product of the present invention, addition of auxiliary components, selection of specific modes, etc., falls within the scope of the present invention and the scope of disclosure.
The preferred embodiments of the present invention have been described in detail above, but the present invention is not limited to the specific details of the above embodiments, and various simple modifications can be made to the technical solution of the present invention within the scope of the technical concept of the present invention, and all the simple modifications belong to the protection scope of the present invention.
In addition, the specific features described in the above embodiments may be combined in any suitable manner, and in order to avoid unnecessary repetition, various possible combinations are not described further.

Claims (10)

1. The power steering oil is characterized by comprising, by weight, 72-97 parts of base oil, 0.1-2 parts of extreme pressure antiwear agent, 2-15 parts of viscosity index improver, 0.1-1 part of antioxidant, 0.1-0.5 part of defoamer and 1-10 parts of dispersant.
2. The power steering oil according to claim 1, wherein the base oil comprises a group iii base oil and/or a group IV base oil;
preferably, the base oil has a kinematic viscosity at 100 ℃ of not more than 8mm 2 /s。
3. The power steering oil according to claim 1 or 2, characterized in that the extreme pressure antiwear agent comprises a borate derivative and a phosphate.
4. A power steering oil according to claim 3, wherein the borate derivative is a benzotriazole group-containing borate derivative having the structure shown below:
wherein n is selected from integers of 2 to 16, R 1 、R 2 Independently selected from C2-C16 alkyl groups.
5. The power steering oil according to claim 3 or 4, wherein the phosphate is selected from any one or a combination of at least two of butyl isooctyl dodecylphosphate, alkoxyphosphate or alkoxyphosphite.
6. The power steering oil according to any one of claims 1 to 5, wherein the viscosity index improver comprises an ethylene propylene copolymer and/or a polymethacrylate.
7. The power steering oil according to any one of claims 1 to 6, characterized in that the antioxidant comprises benzotriazole and/or tolyltriazole;
preferably, the defoamer comprises any one or a combination of at least two of methyl silicone oil, tolyl silicone oil or methyl siloxane;
preferably, the dispersant comprises any one or a combination of at least two of a succinimide, a bis-succinimide, or a polyisobutylene succinate.
8. A method of producing a power steering oil according to any one of claims 1 to 7, characterized in that the method of producing comprises the steps of:
and mixing and stirring the base oil, the extreme pressure antiwear agent, the viscosity index improver, the antioxidant, the defoamer and the dispersant to obtain the power steering oil.
9. The method according to claim 8, wherein the stirring is carried out at a temperature of 50 to 60 ℃ for a time of 4 to 6 hours.
10. Use of the power steering oil according to any one of claims 1-7 in the preparation of automotive lubricating oils.
CN202311472652.0A 2023-11-07 2023-11-07 Power steering oil and preparation method and application thereof Pending CN117511636A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202311472652.0A CN117511636A (en) 2023-11-07 2023-11-07 Power steering oil and preparation method and application thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202311472652.0A CN117511636A (en) 2023-11-07 2023-11-07 Power steering oil and preparation method and application thereof

Publications (1)

Publication Number Publication Date
CN117511636A true CN117511636A (en) 2024-02-06

Family

ID=89744925

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202311472652.0A Pending CN117511636A (en) 2023-11-07 2023-11-07 Power steering oil and preparation method and application thereof

Country Status (1)

Country Link
CN (1) CN117511636A (en)

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