CN107674731A - Graphene lubricating oil for automobile engine and preparation method thereof - Google Patents
Graphene lubricating oil for automobile engine and preparation method thereof Download PDFInfo
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- CN107674731A CN107674731A CN201710890236.0A CN201710890236A CN107674731A CN 107674731 A CN107674731 A CN 107674731A CN 201710890236 A CN201710890236 A CN 201710890236A CN 107674731 A CN107674731 A CN 107674731A
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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
- C10M125/00—Lubricating compositions characterised by the additive being an inorganic material
- C10M125/02—Carbon; Graphite
-
- 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
- C10M161/00—Lubricating compositions characterised by the additive being a mixture of a macromolecular compound and a non-macromolecular compound, each of these compounds being essential
-
- 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
- C10M2201/00—Inorganic compounds or elements as ingredients in lubricant compositions
- C10M2201/04—Elements
- C10M2201/041—Carbon; Graphite; Carbon black
-
- 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
- C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
- C10M2207/28—Esters
- C10M2207/287—Partial esters
- C10M2207/289—Partial esters containing free hydroxy groups
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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
- C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant compositions
- C10M2215/086—Imides
-
- 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
- C10M2215/221—Six-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
- C10M2217/02—Macromolecular compounds obtained from nitrogen containing monomers by reactions only involving carbon-to-carbon unsaturated bonds
- C10M2217/028—Macromolecular compounds obtained from nitrogen containing monomers by reactions only involving carbon-to-carbon unsaturated bonds containing monomers having an unsaturated radical bound to a nitrogen-containing hetero ring
-
- 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
- C10N2030/04—Detergent property or dispersant property
-
- 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
- C10N2030/06—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
- C10N2030/54—Fuel economy
-
- 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
- C10N2030/76—Reduction of noise, shudder, or vibrations
-
- 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
- C10N2030/78—Fuel contamination
-
- 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
- C10N2040/00—Specified use or application for which the lubricating composition is intended
- C10N2040/25—Internal-combustion engines
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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)
- Inorganic Chemistry (AREA)
- Lubricants (AREA)
Abstract
The invention provides a kind of graphene lubricating oil for automobile engine and preparation method thereof.Graphene lubricating oil example meter by weight percentage, including following component：Graphene powder 0.001 0.5%, dispersant and suspension agent composition 1.0~7.5% and automobile oil 90.0 92.0%.Preparation method, mainly include：The graphene powder measured is added in blender, adds dispersant and suspension agent composition in a mixer, dispersant and suspension agent composition mix with order with graphene powder by a certain percentage respectively, obtain uniform graphene dispersion body；Graphene dispersion body is added in automobile oil, after being uniformly mixed, obtains graphene lubricating oil.Graphene lubricating oil provided by the invention realizes graphene uniform and is dispersed stably in lubricating oil; with good dispersion, stability, anti-attrition and mechanical protection performance, the discharge capacity and saving fuel oil of automobile engine carbon monoxide (CO) and hydrocarbon (HC+NO) can be effectively reduced.
Description
Technical field
The present invention relates to technical field of lubricating oil, more particularly to a kind of graphene lubricating oil for automobile engine and its
Preparation method.
Background technology
In order to increase the lubricant effect of lubricating oil, a small amount of wear-resistant agent addition agent, conventional profit will be added in lubricating oil
Lubricating oil antiwear additive is sulfur-bearing, the organo-metallic compound of phosphorus, such as zinc dialkyl dithiophosphate (ZDDP) class, and these contain
The lubrication oil antiwear agent of the elements such as sulphur, phosphorus in use, can decompose generation pollutant emission, thus cause dirt to environment
Dye.Currently used another type of antiwear additive molybdenum disulfide or boric acid and boronic acid derivatives is nor environment-friendly.
In the world, with EPA (U.SenvironmentalProtectionAgency, Environmental Protection Agency) and regulator of European Union
Continue to tighten up environmental legislation, lubricating oil manufacturer is making great efforts to meet new green requirement while lubricants performance is kept.
China is automobile superpower, and motor vehicle exhaust emission is an important factor for causing China's air pollution damage people's health,
Governments at all levels of China pay much attention to the energy-saving and emission-reduction problem of automobile.So developing the machine oil of energy-saving and emission-reducing, fuel combustion is improved
Utilization rate, the important channel that will be reduction automobile energy consumption and reduce environmental pollution.
In recent years, the excellent frictional behaviour of graphene and the existing many reports of application study in friction field, such as
Diana Berman etc. research shows that few layer graphene can reduce the abrasion for sliding steel surface and friction (DOI:
10.1016/j.carbon.2012.11.061).Due to the ultimate mechanical strength and topological structure of graphene, cause nano-graphite
Alkenyl profit fluid has excellent tribological property.So external have nano-graphene lubricant to lubricate auto industry not
The prediction come.
Graphene additive technology has been introduced into lubricating oil field.Graphene can make low viscosity machine oil as antiwear additive
More popularize, so as to help automobile more energy-saving and environmental protection.But graphene and other medium interaction power are weaker, although tool
There are good lubrication and anti-wear effect, but obtained lubrication oil-proofness is poor, meeting after the graphene being dispersed in lubricating oil is long placed in
Aggregate sedimentation is formed, very big technical difficulty is caused applied to lubricating oil to graphene.
How to realize that graphene uniform is dispersed stably in lubricating oil, so as to obtain a kind of stability, anti-attrition and machine
The good graphene lubricating oil of tool protective value, it is a urgent problem to be solved.
The content of the invention
The embodiment provides a kind of graphene lubricating oil for automobile engine and preparation method thereof, to carry
For a kind of graphene lubricating oil with good dispersion, stability, anti-attrition and mechanical protection performance.
To achieve these goals, this invention takes following technical scheme.
According to an aspect of the invention, there is provided a kind of graphene lubricating oil for automobile engine, by weight hundred
Divide ratio meter, including following component：
Graphene powder 0.001-0.5%
Dispersant and suspension agent composition 1.0~7.5%
Automobile oil 90.0-92.0%.
Further, the graphene powder is few layer graphene powder, and the specific surface area of the graphene powder is
200-600 rice2/ gram.
Further, the dispersant and suspension agent composition are glycerin mono-fatty acid ester, polyisobutenyl succinimide, N-
The mixture of butyl-pyridinium tetrafluoroborate and polyvinylpyrrolidone.
Further, the dispersant and suspension agent composition example meter by weight percentage, including following component：Glycerine list
Oleate 0.1-3.0%, polyisobutenyl succinimide 1.0-4.0%, N- butyl-pyridinium tetrafluoroborate 0.1-1.0% and poly-
Vinylpyrrolidone 0.01-1.0%.
Further, the dispersant and suspension agent composition respectively by a certain percentage with order and the graphene powder
It is mixed to get graphene dispersion body.
Further, graphene dispersion body example meter by weight percentage proportion in the graphene lubricating oil
For 8.0-10.0%.
According to another aspect of the present invention, there is provided a kind of preparation side of graphene lubricating oil for automobile engine
Method, including：
The graphene powder measured is added in blender；
Dispersant is added in the blender and suspension agent composition, the dispersant and suspension agent composition are pressed respectively
Certain proportion and order mix with the graphene powder, obtain uniform graphene dispersion body；
The graphene dispersion body is added in automobile oil, after being uniformly mixed, obtains being used for car engine
The graphene lubricating oil of machine.
It is provided in an embodiment of the present invention it can be seen from the technical scheme provided by embodiments of the invention described above to be used for automobile
The graphene lubricating oil of engine realizes graphene uniform and is dispersed stably in lubricating oil, with good dispersion, stably
Property, anti-attrition and mechanical protection performance, automobile engine noise can be effectively reduced, reduce engine idling, it is particularly bright
The aobvious discharge capacity and saving fuel oil for reducing automobile engine carbon monoxide (CO) and hydrocarbon (HC+NO).Carbon monoxide
Discharge capacity about about reduces 40-50% with hydrocarbon emission amount, and average saving fuel oil is more than 5%.
The additional aspect of the present invention and advantage will be set forth in part in the description, and these will become from the following description
Obtain substantially, or recognized by the practice of the present invention.
Brief description of the drawings
In order to illustrate the technical solution of the embodiments of the present invention more clearly, required use in being described below to embodiment
Accompanying drawing be briefly described, it should be apparent that, drawings in the following description are only some embodiments of the present invention, for this
For the those of ordinary skill of field, on the premise of not paying creative work, it can also be obtained according to these accompanying drawings other
Accompanying drawing.
Fig. 1 is a kind of place of the preparation method of graphene lubricating oil for automobile engine provided in an embodiment of the present invention
Manage flow chart.
Embodiment
Embodiments of the present invention are described below in detail, the example of the embodiment is shown in the drawings, wherein from beginning
Same or similar element is represented to same or similar label eventually or there is the element of same or like function.Below by ginseng
The embodiment for examining accompanying drawing description is exemplary, is only used for explaining the present invention, and is not construed as limiting the claims.
Those skilled in the art of the present technique are appreciated that unless expressly stated, singulative " one " used herein, " one
It is individual ", " described " and "the" may also comprise plural form.It is to be further understood that what is used in the specification of the present invention arranges
Diction " comprising " refer to the feature, integer, step, operation, element and/or component be present, but it is not excluded that in the presence of or addition
One or more other features, integer, step, operation, element, component and/or their groups.It should be understood that when we claim member
Part is " connected " or during " coupled " to another element, and it can be directly connected or coupled to other elements, or there may also be
Intermediary element.In addition, " connection " used herein or " coupling " can include wireless connection or coupling.Wording used herein
"and/or" includes any cell of one or more associated list items and all combined.
Those skilled in the art of the present technique are appreciated that unless otherwise defined, all terms used herein (including technology art
Language and scientific terminology) with the general understanding identical meaning with the those of ordinary skill in art of the present invention.Should also
Understand, those terms defined in such as general dictionary, which should be understood that, to be had and the meaning in the context of prior art
The consistent meaning of justice, and unless defined as here, will not be with idealizing or the implication of overly formal be explained.
For ease of the understanding to the embodiment of the present invention, done further by taking several specific embodiments as an example below in conjunction with accompanying drawing
Explanation, and each embodiment does not form the restriction to the embodiment of the present invention.
Embodiment one
The embodiments of the invention provide a kind of graphene lubricating oil for automobile engine and preparation method thereof, to improve
Orthodox car engine lubricating oil wear resistence, reduce the discharge pollution on the environment of pollutant in vehicle exhaust.
Graphene lubricating oil provided in an embodiment of the present invention for automobile engine, by weight percentage example meter, including
Following component：Graphene powder 0.001-0.5%, dispersant and suspension agent composition 1.0~7.5% and automobile oil
90.0-92.0%.
Above-mentioned graphene powder is multi-layer graphene powder, and its specific surface area is 200-600 rice2/ gram.
The dispersant and suspension agent composition are glycerin mono-fatty acid ester, polyisobutenyl succinimide, N- butyl-pyridiniums
The mixture of tetrafluoroborate and polyvinylpyrrolidone.
The dispersant and suspension agent composition example meter by weight percentage, including following component：Glycerin mono-fatty acid ester
0.1-3.0%, polyisobutenyl succinimide 1.0-4.0%, N- butyl-pyridinium tetrafluoroborate 0.1-1.0% and polyethylene pyrrole
Pyrrolidone 0.01-1.0%.
The dispersant and suspension agent composition are mixed to get with order and the graphene powder by a certain percentage respectively
Graphene dispersion body.
Above-mentioned automobile oil can be commercially available up-to-standard mineral matter lubricating oil, semi-synthetic and fully synthetic lubrication
Oil, the used commercially available lubricating oil model of representativeness is such as：SG15W/40, SJ10W/40.SM5W/40, SN5W/30 etc..
The embodiments of the invention provide a kind of processing stream of the preparation method of the graphene lubricating oil for automobile engine
Journey is as shown in figure 1, including following processing step：
Step S110, the graphene powder measured is added in blender；
Step S120, dispersant and suspension agent composition, the dispersant and suspension agent composition are added in a mixer
Difference mixes with order with the graphene powder by a certain percentage, obtains uniform graphene dispersion body.
The graphene powder that the present invention uses is fully mixed with dispersant and suspension agent composition before lubricating oil is added
Close, N- butyl-pyridinium tetrafluoroborates 0.1-1.0%, glycerin mono-fatty acid ester 0.1-3.0%, poly- different is added in above-mentioned blender
Butylene succinimide 1.0-4.0% and polyvinylpyrrolidone (PVP) 0.01-1.0%.By the mixed liquor in above-mentioned blender
High shear agitation is into uniform graphene dispersion body.
Step S130, the graphene dispersion body is added in automobile oil, after being uniformly mixed, be used for
The graphene lubricating oil of automobile engine.
Above-mentioned graphene dispersion body is added in the commercially available automobile oil of foregoing model, high-speed stirred is well mixed, directly
Disperse suspension in commercially available automobile oil to all graphene dispersion bodies and reach 100%, be being sent out for automobile for the present invention
The graphene lubricating oil of motivation.
Embodiment two
Graphene lubricating oil provided in an embodiment of the present invention takes direct vehicle behavior to test, and has obvious reduction automobile
Engine noise, engine idling is reduced, the particularly obvious carbon monoxide (CO) and hydrocarbon for reducing automobile engine
(HC+NO) discharge capacity and saving fuel oil.CO emission about about reduces 40-50% with hydrocarbon emission amount,
Average saving fuel oil is more than 5%.Lubricating oil real vehicle tail gas inspection results in the embodiment see below table 1, lubricating oil detection report
Announcement sees below table 2.
This patent lubricating oil real vehicle tail gas inspection results of table 1.
Note：CO (g/km) limit value≤12.0；HC+NO (g/km) limit value≤4.5
This patent lubricating oil examining report of table 2
In summary, it is equal to realize graphene for the graphene lubricating oil provided in an embodiment of the present invention for automobile engine
It is even to be dispersed stably in lubricating oil, there is good dispersion, stability, anti-attrition and mechanical protection performance, can be effectively
Automobile engine noise is reduced, reduces engine idling, the particularly obvious automobile engine carbon monoxide (CO) and hydrocarbon of reducing
The discharge capacity and saving fuel oil of compound (HC+NO).CO emission about about reduces 40- with hydrocarbon emission amount
50%, average saving fuel oil is more than 5%.
One of ordinary skill in the art will appreciate that：Accompanying drawing is the schematic diagram of one embodiment, module in accompanying drawing or
Flow is not necessarily implemented necessary to the present invention.
Each embodiment in this specification is described by the way of progressive, identical similar portion between each embodiment
Divide mutually referring to what each embodiment stressed is the difference with other embodiment.Especially for device or
For system embodiment, because it is substantially similar to embodiment of the method, so describing fairly simple, related part is referring to method
The part explanation of embodiment.Apparatus and system embodiment described above is only schematical, wherein the conduct
The unit that separating component illustrates can be or may not be it is physically separate, can be as the part that unit is shown or
Person may not be physical location, you can with positioned at a place, or can also be distributed on multiple NEs.Can root
Factually border needs to select some or all of module therein realize the purpose of this embodiment scheme.Ordinary skill
Personnel are without creative efforts, you can to understand and implement.
The foregoing is only a preferred embodiment of the present invention, but protection scope of the present invention be not limited thereto,
Any one skilled in the art the invention discloses technical scope in, the change or replacement that can readily occur in,
It should all be included within the scope of the present invention.Therefore, protection scope of the present invention should be with scope of the claims
It is defined.
Claims (7)
- A kind of 1. graphene lubricating oil for automobile engine, it is characterised in that example meter by weight percentage, including such as the following group Point：Graphene powder 0.001-0.5%Dispersant and suspension agent composition 1.0~7.5%Automobile oil 90.0-92.0%.
- 2. the graphene lubricating oil according to claim 1 for automobile engine, it is characterised in that the Graphene powder Body is few layer graphene powder, and the specific surface area of the graphene powder is 200-600 rice2/ gram.
- 3. the graphene lubricating oil according to claim 1 for automobile engine, it is characterised in that the dispersant and Suspension agent composition is glycerin mono-fatty acid ester, polyisobutenyl succinimide, N- butyl-pyridiniums tetrafluoroborate and polyethylene pyrrole The mixture of pyrrolidone.
- 4. the graphene lubricating oil according to claim 3 for automobile engine, it is characterised in that the dispersant and Suspension agent composition example meter by weight percentage, including following component：Glycerin mono-fatty acid ester 0.1-3.0%, polyisobutene succinic Acid imide 1.0-4.0%, N- butyl-pyridinium tetrafluoroborate 0.1-1.0% and polyvinylpyrrolidone 0.01-1.0%.
- 5. the graphene lubricating oil according to claim 4 for automobile engine, it is characterised in that the dispersant and Suspension agent composition is mixed to get graphene dispersion body with order and the graphene powder by a certain percentage respectively.
- 6. the graphene lubricating oil according to claim 5 for automobile engine, it is characterised in that the graphene point Granular media example meter by weight percentage proportion in the graphene lubricating oil is 8.0-10.0%.
- 7. a kind of preparation method of the graphene lubricating oil for automobile engine described in any one of claim 1 to 6, it is special Sign is, including：The graphene powder measured is added in blender；Dispersant and suspension agent composition are added in the blender, the dispersant and suspension agent composition are respectively by certain Ratio and order mix with the graphene powder, obtain uniform graphene dispersion body；The graphene dispersion body is added in automobile oil, after being uniformly mixed, obtained for automobile engine Graphene lubricating oil.
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| CN110699152A (en) * | 2019-11-20 | 2020-01-17 | 法尔胜泓昇集团有限公司 | Modified grease for enhancing wear resistance and extrusion resistance of steel wire rope and preparation method thereof |
| CN111979022A (en) * | 2020-08-02 | 2020-11-24 | 德汇新材料科技南通有限公司 | Graphene-containing engine protective agent and preparation method thereof |
| CN115627191A (en) * | 2022-11-01 | 2023-01-20 | 江苏灏钧股份有限公司 | Graphene power improver for automobile and preparation method thereof |
| CN116948733A (en) * | 2023-07-19 | 2023-10-27 | 山东源根石油化工有限公司 | Refrigerator oil composition for hydrocarbon refrigerant and method for producing the same |
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Cited By (5)
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| CN110699152A (en) * | 2019-11-20 | 2020-01-17 | 法尔胜泓昇集团有限公司 | Modified grease for enhancing wear resistance and extrusion resistance of steel wire rope and preparation method thereof |
| CN111979022A (en) * | 2020-08-02 | 2020-11-24 | 德汇新材料科技南通有限公司 | Graphene-containing engine protective agent and preparation method thereof |
| CN115627191A (en) * | 2022-11-01 | 2023-01-20 | 江苏灏钧股份有限公司 | Graphene power improver for automobile and preparation method thereof |
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