CN102618353B - Lubricating oil composition - Google Patents
Lubricating oil composition Download PDFInfo
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- CN102618353B CN102618353B CN 201110027905 CN201110027905A CN102618353B CN 102618353 B CN102618353 B CN 102618353B CN 201110027905 CN201110027905 CN 201110027905 CN 201110027905 A CN201110027905 A CN 201110027905A CN 102618353 B CN102618353 B CN 102618353B
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Abstract
The invention relates to a lubricating oil composition. The composition comprises at least one friction improver, at least one antioxidant, at least one sealing material swelling agent, at least one borate, and mineral or synthetic base oil with the dynamic viscosity of 2.0-8.0mm<2>/s at 100DEG C. According to the invention, a low temperature abnormal sound problem of a power steering system is improved through the cooperation use of the preferable friction improver(s) and borate(s).
Description
Technical field
The present invention relates to a kind of lubricating oil composition, particularly relate to a kind of lubricating oil composition that improves intermetallic frictional behaviour under cold condition that has.
Background technology
Power steering fluid (hereinafter to be referred as PSF) is a kind of lubricating oil for automobile power steering system, mainly play cooling, the effect of transferring energy.General power steering fluid need add viscosity index improver, dispersion agent anti-wear agent, oxidation inhibitor, friction improver, kilfoam, the multiple additives such as elastomeric material swelling agent.
PSF is for automobile liquid pressure type power steering system, and hydraulic power steering is applied to 1950s the earliest, and at that time, hydraulic power steering system lubricated do not have special-purpose oil product.Most of Original Equipment Manufacturers (hereinafter to be referred as OEM) adopt the DEXRONIID that meets GM, and the automatic transmission fluid (hereinafter to be referred as ATF) of DEXRON IIIH specification is used as the lubricating oil product of its power steering stgear.At low temperatures, power steering pump tends to send " screaming " sound, is mainly because under low temperature condition, and the oil product viscosity increases, and when high pressure, safety valve produces bonding, slippage and producing.And the initial purpose of ATF is mainly used in automatic gear-box, keep low static friction coefficient and high kinetic friction coefficient in clutch coupling.And power steering system is in harsh climatope, particularly outstanding to low temperature flowability and the cold starting effect requirement of PSF.Many OEM and vehicle driver are when starting under low temperature, and power steering system long-time " screaming " can't stand.
As can be seen here, above-mentioned existing lubricating oil composition, obviously still have inconvenience and defect, and urgently be further improved.Practical experience and the expertise of the inventor based on being engaged in this type of research and development of products, actively research and innovation in addition, to proposing a kind of lubricating oil composition, make its defect of improving prior art, has more practicality.
Summary of the invention
Main purpose of the present invention is; overcome the defect that existing lubricating oil exists; and provide a kind of new lubricating oil composition; technical problem to be solved is to make it have good low-temperature performance; especially suitable intermetallic frictional behaviour; can meet the requirement of automobile liquid pressure type power steering system, under extreme weather conditions, still can provide good protection, thereby more be suitable for practicality.
The object of the invention to solve the technical problems mainly realizes from two kinds of approach, improves the low-temperature performance of power steering system lubricating oil product; Can improve the abrasion resistance of lubricating oil product and reduce intermetallic frictional behaviour by introducing a kind of component.A kind of lubricating oil composition proposed according to the present invention, comprise the base oil of main amount and the additive of minor amount, take composition total weight as benchmark, comprises following component:
A) at least one friction improver
B) at least one oxidation inhibitor
C) at least one sealing material swelling agent
D) at least one boric acid ester
X) base oil, surplus
Described component is friction improver a), at least comprise a kind of, can be the 124 Triazole class, Ashless type thiadiazoles or derivatives thereof, as 124 Triazole fatty acid ammonium salt, 124 Triazole-aldehyde-amine condenses, 2,5-dimercapto-1,3,4-thiadiazoles (DMTD), 2-amino-5-styryl-1,3,4-thiadiazoles, and the mixture of above-mentioned substance.Lubricating oil composition of the present invention can be 0.01-0.8% containing the amount of described friction improver, preferably 0.02-0.5%.
Described components b) oxidation inhibitor, at least comprise a kind ofly, can be phenol type antioxidant, arylamine type oxidation inhibitor, as 2,6-tert.-butyl phenol, and alkylation phenyl-alpha-naphthylamine, alkylated diphenylamine and their composition.Amount containing described oxidation inhibitor in lubricating oil composition is 0.1-1.5%.
Described amount of component b) sealing material swelling agent, at least comprise a kind ofly, can be the composition of aromatics, phosphoric acid ester, oil soluble sulfone class and material, and wherein, aromatics can be made by carboxylic acid or acyl chlorides and arylamine reaction.Concrete component, as, poor naphthalene aromatic substance, zine dialkyldithiophosphates salt, replacement tetramethylene sulfone, 3-alkoxyl group four alkylidene group sulfones etc.The amount of sealing material swelling agent described in lubricating oil composition of the present invention is 0.01-2.0%
Described component d) a kind of nitrogenous boric acid ester, the concrete structure general formula is:
In formula, the alkyl of the C8-C20 that R is straight chain or side chain, cycloalkyl, aryl, aralkyl, the alkyl of preferred C10-C12, as dodecyl.Wherein, in boric acid ester, boron content is not less than 1%.The add-on of the nitrogen-containing borate in lubricating oil composition of the present invention is 0.5-1.0%.
Described component x) base oil comprises mineral base oil and synthetic base oil, and wherein mineral base oil can comprise paraffin base oil or hydrogenated base oil, HVIII3, HVIII4, HVIIII4 etc.; Synthetic base oil can be poly-alpha olefins (PAO), synthesizing ester, and synthetic fat comprises di-carboxylic acid fat, polyol ester, multiple fat etc.The selected base oil of the present invention can be single kind of mineral base oil, or single kind of synthetic base oil, or mineral base oil mixture, synthetic base oil mixture or above-mentioned mixture.Usually selecting 100 ℃ of kinematic viscosities is 2.0-8.0mm
2the base oil of/s, in described lubricating oil composition, can not contain viscosity index improver, comprises single-component base oil or base oil composition, thereby make its 100 ℃ of kinematic viscosities be not less than 6.0mm
2/ s, and apparent viscosity (40 ℃) is no more than 20000mPa.s; Perhaps described lubricating oil composition can contain viscosity index improver, comprises single-component base oil or base oil composition, thereby makes its 100 ℃ of kinematic viscosities be not less than 6.0mm
2/ s, and apparent viscosity (40 ℃) is no more than 20000mPa.s.Described lubricating oil composition gross weight is 100%, and the content of base oil is the surplus except all additives.
Other components, except above-mentioned necessary component, the present invention can also selectivity contains one or more component e) dispersion agent, component f) viscosity index changes agent, component g) kilfoam and oil red.Because said components can be purchased commercially produced product.Key is, selects above-mentioned any optional additive to be, guarantees that component can stable dispersion combine species, can not make the problems such as composition precipitates, muddiness, and guarantee can significantly not interfere with the effect of other components in composition, such as wear Characteristics, low-temperature performance.
Lubricating oil composition of the present invention can adopt conventional lubricating oil accord method preparation, be specially: by x) in add a), b), c) and d) component, and other the necessary components except kilfoam, after arriving 45-55 ℃, heated and stirred stirs after 1 hour, slowly add kilfoam, be in harmonious proportion 2～4 hours with 45～60 ℃ of temperature, until each component uniform dissolution.
The lubricating oil composition that the present invention proposes, be applied to the power steering system of automobile, can improve intermetallic frictional behaviour under cold condition, has low temperature flowability and abrasion resistance preferably, can improve the abnormal sound problem of power steering system.
Above-mentioned explanation is only the general introduction of technical solution of the present invention, in order to better understand technique means of the present invention, and can be implemented according to the content of specification sheets, below with preferred embodiment of the present invention, is described in detail as follows.
Embodiment
Reach for further setting forth the present invention technique means and the effect that predetermined goal of the invention is taked, below in conjunction with preferred embodiment, its embodiment of lubricating oil composition, feature and effect thereof that foundation the present invention is proposed, be described in detail as follows.
The present invention estimates the performance of proposed lubricating oil composition by the following method.
(1) lubricating oil product apparent viscosity assay method: the low-temperature performance of lubricating oil characterizes with apparent viscosity, especially the vehicle drive system lubricating oil product.Measure apparent viscosity (40 ℃) numerical value, numerical value is less, shows that the low-temperature performance of oil product is better.
(2) low-temperature startup performance is measured: can constant-25 ℃ and the freezer of-35 ℃ in, car constant temperature is placed 24 hours, carry out starting characteristics test, measure the power steering system abnormal sound time, the abnormal sound time is shorter, reduces intermetallic friction effect better.
Example 1
A kind of lubricating oil composition, take the composition gross weight as benchmark, comprises following component:
Component a) 2,5-dimercapto-1,3,4-thiadiazole (DMTD) 0.04%
Components b) 2,6-tert.-butyl phenol 0.5%
Amount of component b) replace tetramethylene sulfone 0.05%
Component d) dodecyl boron nitride acid esters 1.5%
Component e) the boronation succimide 0.8%
Component x) hydrogenated base oil HVI II6 surplus
Example 2
A kind of lubricating oil composition, take the composition gross weight as benchmark, comprises following component:
Component is 2-amino-5-styryl-1,3 a), 4-thiadiazoles 0.08%
Components b) alkylation phenyl-alpha-naphthylamine 0.4%
2,6-tert.-butyl phenol 0.3%
Amount of component b) 3-alkoxyl group four alkylidene group sulfones 0.04%
Component d) dodecyl boron nitride acid esters 1.0%
Component e) the boronation succimide 0.8%
Component f) polymethacrylate 4%
Component x) hydrogenated base oil HVI III6 20%
Hydrogenated base oil HVI II4 surplus
Example 3
A kind of lubricating oil composition, take the composition gross weight as benchmark, comprises following component:
Component is 2-amino-5-styryl-1,3 a), 4-thiadiazoles 0.05%
2,5-dimercapto-1,3,4-thiadiazole (DMTD) 0.03%
Components b) alkylation phenyl-alpha-naphthylamine 0.7%
Amount of component b) 3-alkoxyl group four alkylidene group sulfones 0.02%
Replace tetramethylene sulfone 0.03%
Component d) dodecyl boron nitride acid esters 1.5%
Component e) the boronation succimide 0.8%
Component x) hydrogenated base oil HVI III 8 30%
Poly-alpha olefins (100 ℃ of kinematic viscosity 4.0mm
2/ s) surplus
By the lubricating oil composition of example 1-3, and reference oil carries out apparent viscosity (40 ℃) performance test, evaluates its low-temperature performance, the results are shown in Table 1.Apparent viscosity is less, and the oil low-temperature performance is better.
Table 1 apparent viscosity test result
| Sample | Apparent viscosity (40 ℃), mPa.s |
| Example 1 lubricating oil composition | 10000 |
| Example 2 lubricating oil compositions | 8400 |
| Example 3 lubricating oil compositions | 2000 |
| Reference oil | 17500 |
By the lubricating oil composition of example 1-3, and reference oil carries out the low-temperature startup performance test, evaluates it and reduces the intermetallic friction effect, the results are shown in Table 2.Time is shorter, and the oil product practical effect is better.
Table 2 oil product abnormal sound test result in actual use
Replaced in the material that each component in above-described embodiment can propose in the application, still can be realized goal of the invention.
The above, it is only preferred embodiment of the present invention, not the present invention is done to any pro forma restriction, although the present invention discloses as above with preferred embodiment, yet not in order to limit the present invention, any those skilled in the art, within not breaking away from the technical solution of the present invention scope, when the technology contents that can utilize above-mentioned announcement is made a little change or is modified to the equivalent embodiment of equivalent variations, in every case be the content that does not break away from technical solution of the present invention, any simple modification of above embodiment being done according to technical spirit of the present invention, equivalent variations and modification, all still belong in the scope of technical solution of the present invention.
Claims (7)
1. a lubricating oil composition, is characterized in that, in weight percentage, comprises following component:
The friction improver of component a:0.01-0.8%, described friction improver is 124 Triazole fatty acid ammonium salt, 124 Triazole-aldehyde-amine condenses, 2,5-dimercapto-1,3,4-thiadiazole and 2-amino-5-styryl-1,3, one or more in the 4-thiadiazoles;
The oxidation inhibitor of components b: 0.1-1.5%;
The sealing material swelling agent of amount of component b: 0.01-2.0%, described sealing material swelling agent is one or more in aromatics, phosphoric acid ester and oil soluble sulfone compound;
The boric acid ester of component d:0.5-1.0%, the molecular formula of described boric acid ester is
In formula, the alkyl of the C8-C20 that R is straight chain or side chain, cycloalkyl, aryl, aralkyl, wherein, in boric acid ester, boron content is not less than 1%; And
Component x: the base oil of surplus, the mixture that described base oil is mineral base oil or synthetic base oil or mineral base oil and synthetic base oil, described mineral base oil is paraffin base oil and/or hydrogenated base oil; Described synthetic base oil be poly-alpha olefins, dicarboxylic esters, polyol ester and multiple fat wherein one or more, 100 ℃ of kinematic viscosities of described base oil are 2.0-8.0mm
2/ s.
2. lubricating oil composition according to claim 1, is characterized in that, described oxidation inhibitor is phenol type antioxidant and/or arylamine type oxidation inhibitor.
3. lubricating oil composition according to claim 1 and 2, is characterized in that, described oxidation inhibitor is one or more in 2,6-tert.-butyl phenol, alkylation phenyl-alpha-naphthylamine and alkylated diphenylamine.
4. lubricating oil composition according to claim 1 and 2, is characterized in that, described sealing material swelling agent is one or more in poor naphthalene aromatic substance, zine dialkyldithiophosphates salt, replacement tetramethylene sulfone and 3-alkoxyl group four alkylidene group sulfones.
5. lubricating oil composition according to claim 1 and 2, is characterized in that, the content of described friction improver is 0.02-0.5%.
6. lubricating oil composition according to claim 1, is characterized in that, described R is dodecyl.
7. a lubricating oil composition, is characterized in that, in weight percentage, comprises following component:
The friction improver of component a:0.01-0.8%, described friction improver is 124 Triazole fatty acid ammonium salt, 124 Triazole-aldehyde-amine condenses, 2,5-dimercapto-1,3,4-thiadiazole and 2-amino-5-styryl-1,3, one or more in the 4-thiadiazoles;
The oxidation inhibitor of components b: 0.1-1.5%;
The sealing material swelling agent of amount of component b: 0.01-2.0%, described sealing material swelling agent is one or more in aromatics, phosphoric acid ester and oil soluble sulfone compound;
The boric acid ester of component d:0.5-1.0%, the molecular formula of described boric acid ester is
In formula, the alkyl of the C8-C20 that R is straight chain or side chain, cycloalkyl, aryl, aralkyl, wherein, in boric acid ester, boron content is not less than 1%; And
Component x: the base oil of surplus, the mixture that described base oil is mineral base oil or synthetic base oil or mineral base oil and synthetic base oil, described mineral base oil is paraffin base oil and/or hydrogenated base oil; Described synthetic base oil be poly-alpha olefins, dicarboxylic esters, polyol ester and multiple fat wherein one or more, 100 ℃ of kinematic viscosities of described base oil are 2.0-8.0mm
2/ s;
Component e: one or more in dispersion agent, viscosity index improver, kilfoam and oil red.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201110027905 CN102618353B (en) | 2011-01-26 | 2011-01-26 | Lubricating oil composition |
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| CN 201110027905 CN102618353B (en) | 2011-01-26 | 2011-01-26 | Lubricating oil composition |
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| CN102618353B true CN102618353B (en) | 2013-12-18 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US11078436B2 (en) * | 2014-04-11 | 2021-08-03 | Valvoline Licensing And Intellectual Property Llc | Lubricant for preventing and removing carbon deposits in internal combustion engines |
| CN105441168A (en) * | 2015-11-30 | 2016-03-30 | 蚌埠市华科机电有限责任公司 | Friction improved lubricating oil |
| WO2017205271A1 (en) * | 2016-05-24 | 2017-11-30 | The Lubrizol Corporation | Seal swell agents for lubricating compositions |
| CN106190506B (en) * | 2016-08-11 | 2019-10-18 | 江苏龙蟠科技股份有限公司 | A kind of diesel engine oil composition reducing oil consumption |
| CN106190505B (en) * | 2016-08-11 | 2019-04-02 | 江苏龙蟠科技股份有限公司 | A kind of turbo-charged direct injection cylinder oil composition |
| CN106929129B (en) * | 2017-03-31 | 2019-12-27 | 烟台德高石油有限公司 | Composition for pure electric vehicle gearbox oil, preparation method of composition, gearbox oil containing composition and preparation method of gearbox oil |
| WO2019047036A1 (en) * | 2017-09-05 | 2019-03-14 | 戴文凤 | Automotive gear lubricating oil |
| CN112500910A (en) * | 2020-12-08 | 2021-03-16 | 苏州安科霖化工环保科技有限公司 | Vacuum pump oil manufacturing method |
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