CN110846108A - Road vehicle gear oil and preparation method thereof - Google Patents
Road vehicle gear oil and preparation method thereof Download PDFInfo
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- CN110846108A CN110846108A CN201911112296.5A CN201911112296A CN110846108A CN 110846108 A CN110846108 A CN 110846108A CN 201911112296 A CN201911112296 A CN 201911112296A CN 110846108 A CN110846108 A CN 110846108A
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- gear oil
- viscosity index
- index improver
- agent
- road vehicle
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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
- 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
- C10M2205/04—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing aromatic monomers, e.g. styrene
- C10M2205/046—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing aromatic monomers, e.g. styrene used as thickening agents
-
- 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
- C10M2205/00—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions
- C10M2205/06—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing conjugated dienes
- C10M2205/066—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing conjugated dienes used as thickening agents
-
- 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
- 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
-
- 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
- C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant compositions
- C10M2215/22—Heterocyclic nitrogen compounds
- C10M2215/223—Five-membered rings containing nitrogen and carbon only
-
- 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
- C10M2217/00—Organic macromolecular compounds containing nitrogen as ingredients in lubricant compositions
- C10M2217/04—Macromolecular compounds from nitrogen-containing monomers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- C10M2217/041—Macromolecular compounds from nitrogen-containing monomers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds involving a condensation reaction
-
- 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
- C10M2219/00—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions
- C10M2219/02—Sulfur-containing compounds obtained by sulfurisation with sulfur or sulfur-containing compounds
- C10M2219/022—Sulfur-containing compounds obtained by sulfurisation with sulfur or sulfur-containing compounds of hydrocarbons, e.g. olefines
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Lubricants (AREA)
Abstract
The invention discloses a road vehicle gear oil and a preparation method thereof, relating to the technical field of gear oil processing and being prepared from the following raw materials in percentage by weight: 10-30% of viscosity index improver, 0.1-2% of antirust agent, 0.05-1% of anti-emulsifier, 0.05-1% of extreme pressure antiwear agent, 0.005-0.5% of anti-foaming agent and the balance of mineral oil; according to the invention, the gear oil has excellent thickening capability, shear stability, oxidation stability, low-temperature fluidity and lubricity by pretreatment of the viscosity index improver and specific selection of the viscosity index improver, so that the comprehensive use performance of the prepared gear oil is optimized, and the prepared lubricating oil can better meet the use requirements of road vehicles.
Description
The technical field is as follows:
the invention relates to the technical field of gear oil processing, in particular to road vehicle gear oil and a preparation method thereof.
Background art:
the gear oil for road vehicles is used in gear transmission mechanisms such as automobile steering gears, speed changers, drive axles and the like, and the gear oil plays an important role in the aspects of lubrication, wear resistance, cooling, heat dissipation, corrosion prevention, rust prevention, washing, reduction of tooth surface impact, noise and the like of gears due to high surface pressure during gear transmission. Gear oil is required to have excellent extreme pressure properties, oxidation stability, wear resistance, and the like, in addition to lubricity under use conditions.
In order to further improve the service performance of the gear oil, the formulation of the gear oil needs to be screened and optimized. The invention provides a road vehicle gear oil which is composed of mineral oil and functional additives (viscosity index improver, antirust agent, anti-emulsifier, extreme pressure anti-wear agent and anti-foaming agent).
The invention content is as follows:
the technical problem to be solved by the invention is to provide the road vehicle gear oil, the mineral oil is used as the base oil, the functional auxiliary agent is used for combining the formula of the gear oil, the use performance of the gear oil can be obviously improved, and particularly the low-temperature fluidity of the gear oil is improved.
The technical problem to be solved by the invention is realized by adopting the following technical scheme:
the road vehicle gear oil is prepared from the following raw materials in percentage by weight:
10-30% of viscosity index improver, 0.1-2% of antirust agent, 0.05-1% of anti-emulsifier, 0.05-1% of extreme pressure antiwear agent, 0.005-0.5% of anti-foaming agent and the balance of mineral oil;
the preparation method comprises the following steps:
(1) pretreatment of the viscosity index improver: heating the viscosity index improver to 110 ℃ at the heating rate of 5-10 ℃/min, then carrying out heat preservation and stirring, continuing heating at the heating rate to 180 ℃ at 170 ℃, then carrying out heat preservation and stirring, then transferring to the low-temperature environment of 0-10 ℃, standing, heating to 180 ℃ at the heating rate of 5-10 ℃/min again, then carrying out heat preservation and stirring, and finishing the pretreatment;
(2) preparing gear oil: and adding the pretreated viscosity index improver, antirust agent, anti-emulsifying agent, extreme pressure anti-wear agent and anti-foaming agent into the mineral oil, stirring at a high speed, and homogenizing to obtain the gear oil.
The viscosity index improver is hydrogenated styrene-diene copolymer.
The hydrogenated styrene-diene copolymer is subjected to step temperature rise operation during pretreatment, the viscosity-temperature characteristic of the copolymer is gradually activated through uniform temperature rise, the molecular chain and the spatial structure of the copolymer are stabilized through operation of directly switching from a high-temperature environment to a low-temperature environment, abrupt change of viscosity under the change of extreme high-temperature and low-temperature working temperature of gear oil is avoided, and further the low-temperature fluidity of the gear oil is improved.
The antirust agent is a benzotriazole derivative.
The anti-emulsifier is a condensate T1001 of amine and ethylene oxide or polyglutamic acid.
The extreme pressure antiwear agent is sulfurized isobutylene.
The anti-foaming agent is an acrylate copolymer anti-foaming agent.
In order to optimize the viscosity-temperature performance of the viscosity index improver and further improve the low-temperature fluidity of the gear oil, the invention also adds diphenylmethane bismaleimide on the basis of the hydrogenated styrene diene copolymer, namely:
the viscosity index improver consists of hydrogenated styrene diene copolymer and diphenylmethane bismaleimide, and the mass ratio of the hydrogenated styrene diene copolymer to the diphenylmethane bismaleimide is 3-5: 1.
The invention relates to a hydrogenated styrene diene copolymer, belonging to a viscosity index improver commonly used in the field, and the application of diphenylmethane bismaleimide as the viscosity index improver is not in the prior art and common knowledge in the field.
The invention has the beneficial effects that:
(1) the gear oil formula consisting of only 6 components is obtained through optimization of the formula, and the use performance of the gear oil is controlled through the matching of the preparation method;
(2) according to the invention, the gear oil has excellent thickening capability, shear stability, oxidation stability, low-temperature fluidity and lubricity by pretreatment of the viscosity index improver and specific selection of the viscosity index improver, so that the comprehensive use performance of the prepared gear oil is optimized, and the prepared lubricating oil can better meet the use requirements of road vehicles.
The specific implementation mode is as follows:
in order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
The mineral oils used in the following examples and comparative examples were paraffin-based straight-chain paraffin mineral oils, and hydrogenated styrene-diene copolymers were prepared by the method of example 1 in patent CN 201410115135.2.
Example 1
The formula of the gear oil comprises:
22% of hydrogenated styrene-diene copolymer serving as a viscosity index improver, 1% of methyl benzotriazole serving as an antirust agent, T10010.5% of a condensation compound of amine serving as an anti-emulsifier and ethylene oxide, 0.05% of vulcanized isobutene serving as an extreme pressure anti-wear agent, T9120.02% of an acrylate copolymer anti-foaming agent and the balance of mineral oil.
Preparing gear oil:
(1) pretreatment of the viscosity index improver: heating the viscosity index improver to 110 ℃ at a heating rate of 5 ℃/min, then carrying out heat preservation stirring for 15min, continuing heating at the heating rate to 180 ℃, then carrying out heat preservation stirring for 15min, then transferring to a low-temperature environment at 5 ℃ for standing for 30min, heating to 180 ℃ at the heating rate of 5 ℃/min again, carrying out heat preservation stirring for 15min, and thus finishing the pretreatment;
(2) preparing gear oil: and adding the pretreated viscosity index improver, antirust agent, anti-emulsifier, extreme pressure anti-wear agent and anti-foaming agent into the mineral oil, stirring at a high speed of 600r/min for 10min, and homogenizing at a pressure of 13MPa and a rotation speed of 8000r/min for 5min to obtain the gear oil.
Example 2
Example 2 in which the demulsifier was replaced with the water treatment agent polyglutamic acid was prepared by referring to example 1, and the rest was the same as example 1.
Example 3
Example 3, in which a mixture of a hydrogenated styrene-diene copolymer and diphenylmethane bismaleimide at a mass ratio of 5:1 was used as a viscosity index improver, was conducted in the same manner as in example 1.
Example 4
Example 4, in which a mixture of a hydrogenated styrene-diene copolymer and diphenylmethane bismaleimide at a mass ratio of 4:1 was used as a viscosity index improver, was prepared in the same manner as in example 1, except that the above-described operation was carried out.
Comparative example 1
The same procedure as in example 1 was repeated except that in comparative example 1 in which the viscosity index improver was not subjected to stepwise temperature increase in the pretreatment, example 1 was used as a control.
Pretreatment of the viscosity index improver: heating the viscosity index improver to 180 ℃ at a heating rate of 5 ℃/min, then preserving heat and stirring for 30min, then transferring to a low-temperature environment of 5 ℃ and standing for 30min, heating to 180 ℃ at a heating rate of 5 ℃/min, preserving heat and stirring for 15min, and finishing the pretreatment.
Comparative example 2
The same procedure as in example 1 was repeated except that in comparative example 2 in which no low-temperature standing was employed in the pretreatment of the viscosity index improver, which was used in example 1, was employed.
Pretreatment of the viscosity index improver: heating the viscosity index improver to 110 ℃ at a heating rate of 5 ℃/min, then preserving heat and stirring for 15min, continuing heating at the heating rate to 180 ℃, then preserving heat and stirring for 15min, heating to 180 ℃ at the heating rate of 5 ℃/min, then preserving heat and stirring for 15min, and finally finishing the pretreatment.
The gear oil is prepared by respectively utilizing the above examples and the comparative examples, and the service performance of the gear oil is tested according to the GB/T265-1988 method, and the test results are shown in Table 1.
TABLE 1 Performance test results for Gear oils
| Group of | Kinematic viscosity mm at 100 DEG C2/s | Kinematic viscosity mm at-40 DEG C2/s |
| Example 1 | 5.38 | 6500 |
| Example 2 | 5.27 | 6300 |
| Example 3 | 4.96 | 5400 |
| Example 4 | 4.88 | 5100 |
| Comparative example 1 | 5.65 | 7200 |
| Comparative example 2 | 5.89 | 8500 |
The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (6)
1. A road vehicle gear oil, which is characterized in that: the material is prepared from the following raw materials in percentage by weight:
10-30% of viscosity index improver, 0.1-2% of antirust agent, 0.05-1% of anti-emulsifier, 0.05-1% of extreme pressure antiwear agent, 0.005-0.5% of anti-foaming agent and the balance of mineral oil;
the preparation method comprises the following steps:
(1) pretreatment of the viscosity index improver: heating the viscosity index improver to 110 ℃ at the heating rate of 5-10 ℃/min, then carrying out heat preservation and stirring, continuing heating at the heating rate to 180 ℃ at 170 ℃, then carrying out heat preservation and stirring, then transferring to the low-temperature environment of 0-10 ℃, standing, heating to 180 ℃ at the heating rate of 5-10 ℃/min again, then carrying out heat preservation and stirring, and finishing the pretreatment;
(2) preparing gear oil: and adding the pretreated viscosity index improver, antirust agent, anti-emulsifying agent, extreme pressure anti-wear agent and anti-foaming agent into the mineral oil, stirring at a high speed, and homogenizing to obtain the gear oil.
2. The road vehicle gear oil according to claim 1, wherein: the viscosity index improver is hydrogenated styrene-diene copolymer.
3. The road vehicle gear oil according to claim 1, wherein: the antirust agent is a benzotriazole derivative.
4. The road vehicle gear oil according to claim 1, wherein: the anti-emulsifier is a condensate T1001 of amine and ethylene oxide or polyglutamic acid.
5. The road vehicle gear oil according to claim 1, wherein: the extreme pressure antiwear agent is sulfurized isobutylene.
6. The road vehicle gear oil according to claim 1, wherein: the anti-foaming agent is an acrylate copolymer anti-foaming agent.
Priority Applications (1)
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| CN201911112296.5A CN110846108B (en) | 2019-11-14 | 2019-11-14 | Road vehicle gear oil and preparation method thereof |
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| CN201911112296.5A CN110846108B (en) | 2019-11-14 | 2019-11-14 | Road vehicle gear oil and preparation method thereof |
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| CN110846108A true CN110846108A (en) | 2020-02-28 |
| CN110846108B CN110846108B (en) | 2021-11-30 |
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2019
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