CN102618353A - Lubricating oil composition - Google Patents
Lubricating oil composition Download PDFInfo
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- CN102618353A CN102618353A CN2011100279054A CN201110027905A CN102618353A CN 102618353 A CN102618353 A CN 102618353A CN 2011100279054 A CN2011100279054 A CN 2011100279054A CN 201110027905 A CN201110027905 A CN 201110027905A CN 102618353 A CN102618353 A CN 102618353A
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- lubricating oil
- oil composition
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- friction improver
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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 the coldcondition that has.
Background technology
Power steering fluid (hereinafter to be referred as PSF) is a kind of lubricating oil that is used for the automobile power steering system, mainly plays cooling, transmits the effect of energy.General power steering fluid need add viscosity index improver, dispersion agent anti-wear agent, oxidation inhibitor, friction improver, kilfoam, multiple additives such as elastomeric material swelling agent.
PSF is used for automobile hydraulic formula power steering system, and hydraulic power steering is applied to 1950s the earliest, at that time, and the lubricated not special-purpose oil product of hydraulic power steering system.Most of Original Equipment Manufacturers (hereinafter to be referred as OEM) adopt the DEXRONIID that satisfies GM, and the automatic transmission fluid (hereinafter to be referred as ATF) of DEXRON IIIH specification uses as the lubricating oil product of its power steering stgear.At low temperatures, power steering pump tends to send " screaming " sound, mainly is because under low temperature condition, and the oil product viscosity increases, and when high pressure, SV produces bonding, slippage and producing.And the initial purpose of ATF is mainly used in automatic gear-box, in clutch coupling, keeps low static friction coefficient and high kinetic friction coefficient.And power steering system is in the climatope of harshness, particularly outstanding to low temperature flowability and the cold starting effect requirement of PSF.When many OEM and vehicle driver started down for low temperature, power steering system long-time " screaming " can't stand.
This shows that above-mentioned existing lubricant compsn obviously still has inconvenience and defective, and demands urgently further improving.The inventor actively studies innovation based on the practical experience of being engaged in this type of research and development of products and expertise, in the hope of proposing a kind of lubricating oil composition, makes it improve the defective of prior art, has more practicality.
Summary of the invention
Main purpose of the present invention is; Overcome the defective that existing lubricant exists, and a kind of new lubricating oil composition is provided, technical problem to be solved is to make it have good low-temperature performance; Especially suitable intermetallic frictional behaviour; Can satisfy the requirement of automobile hydraulic formula power steering system, under extreme weather conditions, still good protection can be provided, thereby be suitable for practicality more.
The object of the invention and solve its technical problem and mainly realize 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 through introducing a kind of component.A kind of lubricating oil composition according to the present invention proposes comprises the base oil of main amount and the additive of minor amount, is benchmark with the composition total weight, comprises following component:
A) at least a friction improver
B) at least a oxidation inhibitor
C) at least a sealing material swelling agent
D) at least a boric acid ester
X) base oil, surplus
Described component is friction improver a), comprises a kind ofly at least, can be the 124 Triazole class; Ashless type thiadiazoles or derivatives thereof is like 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.The amount that lubricating oil composition of the present invention contains said friction improver can be 0.01-0.8%, preferred 0.02-0.5%.
Described components b) oxidation inhibitor comprises a kind ofly at least, can be phenol type antioxidant, arylamine type oxidation inhibitor, as 2, and 6-tert.-butyl phenol, alkylation phenyl-alpha-naphthylamine, alkylated diphenylamine and their compsn.The amount that contains said oxidation inhibitor in the lubricating oil composition is 0.1-1.5%.
Described amount of component b) sealing material swelling agent comprises a kind ofly at least, can be the compsn of aromatics, SULPHOSUCCINIC 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, dialkyl group thiophosphoric acid zinc salt, replacement tetramethylene sulfone, 3-alkoxyl group four alkylidene group sulfones etc.The amount of sealing material swelling agent described in the lubricating oil composition of the present invention is 0.01-2.0%
Said component d) a kind of nitrogenous boric acid ester, the concrete structure general formula is:
In the formula, R is alkyl, naphthenic base, aryl, the aralkyl of the C8-C20 of straight chain or side chain, and the alkyl of preferred C10-C12 is like dodecyl.Wherein, boron content is not less than 1% in the boric acid ester.The add-on of the nitrogen-containing borate in the 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), and synthesizing ester, synthetic fat comprise di-carboxylic acid fat, polyol ester, multiple fat etc.The selected base oil of the present invention can be a single kind of mineral base oil, or single kind of synthetic base oil, perhaps 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 said lubricating oil composition, can not 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 AV (40 ℃) is no more than 20000mPa.s; Perhaps said 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 AV (40 ℃) is no more than 20000mPa.s.Said lubricating oil composition gross weight is 100%, and the content of base oil is the surplus except that all additives.
Other components, except above-mentioned necessary component, the present invention can also select performance to contain 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 make up species; Can not make problems such as compsn precipitates, muddiness; And guarantee can significantly not interfere with the effect of other components in compsn, such as friction resistant polishing machine, low-temperature performance.
Lubricating oil composition according to the invention can adopt conventional lubricating oil accord method preparation, is specially: with x) the middle adding a), b); C) and d) component; And other the necessary components except that 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 is applied to the power steering system of automobile, can improve intermetallic frictional behaviour under the coldcondition, has good low-temperature flowing property and abrasion resistance, can improve the abnormal sound problem of power steering system.
Above-mentioned explanation only is the general introduction of technical scheme of the present invention, understands technique means of the present invention in order can more to know, and can implement according to the content of specification sheets, below with preferred embodiment of the present invention specify as after.
Embodiment
Reach technique means and the effect that predetermined goal of the invention is taked for further setting forth the present invention, below in conjunction with preferred embodiment, to its embodiment of lubricating oil composition, characteristic and the effect thereof that proposes according to the present invention, specify as after.
The present invention estimates the performance of the lubricating oil composition that is proposed through following method.
(1) lubricating oil product AV assay method: the low-temperature performance of lubricating oil characterizes with apparent viscosity, especially the vehicle drive system lubricating oil product.Measure AV (40 ℃) numerical value, numerical value is more little, shows that the low-temperature performance of oil product is good more.
(2) low-temperature startup performance is measured: can be constant-25 ℃ with-35 ℃ freezer in, car constant temperature was placed 24 hours, carry out starting characteristics test, measure the power steering system abnormal sound time, the abnormal sound time is short more, it is good more to reduce intermetallic friction effect.
Instance 1
A kind of lubricating oil compsn is a benchmark with the compsn gross weight, comprises following component:
Component a) 2,5-dimercapto-1,3,4-thiadiazoles (DMTD) 0.04%
Components b) 2,6-tert.-butyl phenol 0.5%
Amount of component b) replaces tetramethylene sulfone 0.05%
Component d) dodecyl SP 1 acid esters 1.5%
Component e) the boronation succimide 0.8%
Component x) hydrogenated base oil HVI II6 surplus
Instance 2
A kind of lubricating oil compsn is a benchmark with the compsn gross weight, 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 SP 1 acid esters 1.0%
Component e) the boronation succimide 0.8%
Component f) Rohm tech inc 4%
Component x) hydrogenated base oil HVI III6 20%
Hydrogenated base oil HVI II4 surplus
Instance 3
A kind of lubricating oil compsn is a benchmark with the compsn gross weight, comprises following component:
Component is 2-amino-5-styryl-1,3 a), 4-thiadiazoles 0.05%
2,5-dimercapto-1,3,4-thiadiazoles (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 SP 1 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
Lubricating oil composition and the reference oil of instance 1-3 are carried out apparent viscosity (40 ℃) performance test, evaluate its low-temperature performance, the result sees table 1.Apparent viscosity is more little, and the oil product low-temperature performance is good more.
Table 1 apparent viscosity test result
| Sample | Apparent viscosity (40 ℃), mPa.s |
| Instance 1 lubricating oil composition | 10000 |
| Instance 2 lubricating oil compositions | 8400 |
| Instance 3 lubricating oil compositions | 2000 |
| Reference oil | 17500 |
Lubricating oil composition and the reference oil of instance 1-3 are carried out the low-temperature startup performance test, evaluate it and reduce the intermetallic friction effect, the result sees table 2.Time is short more, and the oil product practical effect is good more.
Table 2 oil product abnormal sound test result in actual use
Each component in the foregoing description can be replaced in the material that the application proposed, and still can realize goal of the invention.
The above only is preferred embodiment of the present invention, is not the present invention is done any pro forma restriction; Though the present invention discloses as above with preferred embodiment; Yet be not in order to limiting the present invention, anyly be familiar with the professional and technical personnel, in not breaking away from technical scheme scope of the present invention; When the technology contents of above-mentioned announcement capable of using 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 scheme of the present invention, to any simple modification, equivalent variations and modification that above embodiment did, all still belong in the scope of technical scheme of the present invention according to technical spirit of the present invention.
Claims (14)
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%;
The oxidation inhibitor of components b: 0.1-1.5%;
The sealing material swelling agent of amount of component b: 0.01-2.0%;
The boric acid ester of component d:0.5-1.0%; And
Component x: the base oil of surplus.
2. lubricating oil composition according to claim 1 is characterized in that, described friction improver is one or more in 124 Triazole compounds, Ashless type thiadiazole compound and the verivate thereof.
3. lubricating oil composition according to claim 1 is characterized in that, described friction improver is 124 Triazole fatty acid ammonium salt, 124 Triazole-aldehyde-amine condenses, 2; 5-dimercapto-1,3,4-thiadiazoles and 2-amino-5-styryl-1; 3, one or more in the 4-thiadiazoles.
4. lubricating oil composition according to claim 1 is characterized in that, described oxidation inhibitor is phenol type antioxidant and/or arylamine type oxidation inhibitor.
5. according to each described lubricating oil composition of claim 1-4, it is characterized in that described oxidation inhibitor is 2, one or more in 6-tert.-butyl phenol, alkylation phenyl-alpha-naphthylamine and the alkylated diphenylamine.
6. according to each described lubricating oil composition of claim 1-5, it is characterized in that described sealing material swelling agent is one or more in aromatics, SULPHOSUCCINIC ACID ESTER and the oil soluble sulfone compound.
7. according to each described lubricating oil composition of claim 1-6, it is characterized in that described sealing material swelling agent is one or more in poor naphthalene aromatic substance, dialkyl group thiophosphoric acid zinc salt, replacement tetramethylene sulfone and the 3-alkoxyl group four alkylidene group sulfones.
8. according to each described lubricating oil composition of claim 1-7, it is characterized in that the molecular formula of described boric acid ester does
In the formula, R is alkyl, naphthenic base, aryl, the aralkyl of the C8-C20 of straight chain or side chain, and wherein, boron content is not less than 1% in the boric acid ester.
9. according to each described lubricating oil composition of claim 1-8, it is characterized in that described base oil is the mixture of mineral base oil or synthetic base oil or mineral base oil and synthetic base oil.
10. lubricating oil composition according to claim 9 is characterized in that, described mineral base oil is paraffin base oil and/or hydrogenated base oil; Described synthetic base oil poly-alpha olefins, di-carboxylic acid fat, polyol ester and multiple fat wherein one or more.
11., it is characterized in that 100 ℃ of kinematic viscosities of described base oil are 2.0-8.0mm according to each described lubricating oil composition of claim 1-10
2/ s.
12., it is characterized in that it comprises that also dispersion agent, viscosity index change one or more in agent, kilfoam and the oil red according to each described lubricating oil composition of claim 1-11.
13., it is characterized in that the content of described friction improver is 0.02-0.5% according to each described lubricating oil composition of claim 1-12.
14. lubricating oil composition according to claim 8 is characterized in that, described R is a dodecyl.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110027905 CN102618353B (en) | 2011-01-26 | 2011-01-26 | Lubricating oil composition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110027905 CN102618353B (en) | 2011-01-26 | 2011-01-26 | Lubricating oil composition |
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| CN102618353B CN102618353B (en) | 2013-12-18 |
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| 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 |
| CN106190506A (en) * | 2016-08-11 | 2016-12-07 | 江苏龙蟠科技股份有限公司 | A kind of diesel engine oil composition reducing oil consumption |
| CN106190505A (en) * | 2016-08-11 | 2016-12-07 | 江苏龙蟠科技股份有限公司 | A kind of turbo-charged direct injection cylinder oil compositions |
| CN106574201A (en) * | 2014-04-11 | 2017-04-19 | 胜牌许可和知识产权有限公司 | Lubricant for preventing and removing carbon deposits in internal combustion engines |
| CN106929129A (en) * | 2017-03-31 | 2017-07-07 | 烟台德高石油有限公司 | Composition for pure electric automobile gear box oil and preparation method thereof and the gear box oil comprising said composition and preparation method thereof |
| WO2019047036A1 (en) * | 2017-09-05 | 2019-03-14 | 戴文凤 | Automotive gear lubricating oil |
| CN109477021A (en) * | 2016-05-24 | 2019-03-15 | 路博润公司 | Sealing sweller for lubricating composition |
| 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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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106574201A (en) * | 2014-04-11 | 2017-04-19 | 胜牌许可和知识产权有限公司 | Lubricant for preventing and removing carbon deposits in internal combustion engines |
| CN106574201B (en) * | 2014-04-11 | 2020-10-16 | 胜牌许可和知识产权有限公司 | 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 |
| CN109477021A (en) * | 2016-05-24 | 2019-03-15 | 路博润公司 | Sealing sweller for lubricating composition |
| CN109477021B (en) * | 2016-05-24 | 2021-10-26 | 路博润公司 | Seal swell agents for lubricating compositions |
| CN106190506A (en) * | 2016-08-11 | 2016-12-07 | 江苏龙蟠科技股份有限公司 | A kind of diesel engine oil composition reducing oil consumption |
| CN106190505A (en) * | 2016-08-11 | 2016-12-07 | 江苏龙蟠科技股份有限公司 | A kind of turbo-charged direct injection cylinder oil compositions |
| 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 |
| 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 |
| CN106929129A (en) * | 2017-03-31 | 2017-07-07 | 烟台德高石油有限公司 | Composition for pure electric automobile gear box oil and preparation method thereof and the gear box oil comprising said composition and preparation method thereof |
| 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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