CN116891779A - Wheel belt lubricating oil and preparation method and application thereof - Google Patents

Wheel belt lubricating oil and preparation method and application thereof Download PDF

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Publication number
CN116891779A
CN116891779A CN202310869153.9A CN202310869153A CN116891779A CN 116891779 A CN116891779 A CN 116891779A CN 202310869153 A CN202310869153 A CN 202310869153A CN 116891779 A CN116891779 A CN 116891779A
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oil
lubricating oil
wheel belt
nano
soluble
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Inventor
周峰
梁依经
蔡美荣
张明
于强亮
王新刚
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Lanzhou Institute of Chemical Physics LICP of CAS
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Lanzhou Institute of Chemical Physics LICP of CAS
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Priority to CN202310869153.9A priority Critical patent/CN116891779A/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
    • 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
    • C10M2201/00—Inorganic compounds or elements as ingredients in lubricant compositions
    • C10M2201/04—Elements
    • C10M2201/05—Metals; Alloys
    • 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
    • C10M2201/14—Inorganic compounds or elements as ingredients in lubricant compositions inorganic compounds surface treated with organic 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
    • 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
    • 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
    • C10M2207/02—Hydroxy 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
    • C10M2209/00—Organic macromolecular compounds containing oxygen as ingredients in lubricant compositions
    • C10M2209/10—Macromolecular compoundss obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • C10M2209/103—Polyethers, i.e. containing di- or higher polyoxyalkylene groups
    • C10M2209/105—Polyethers, i.e. containing di- or higher polyoxyalkylene groups of alkylene oxides containing three carbon atoms only
    • C10M2209/1055—Polyethers, i.e. containing di- or higher polyoxyalkylene groups of alkylene oxides containing three carbon atoms only used as base material
    • 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
    • C10M2209/10—Macromolecular compoundss obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • C10M2209/103—Polyethers, i.e. containing di- or higher polyoxyalkylene groups
    • C10M2209/106—Polyethers, i.e. containing di- or higher polyoxyalkylene groups of alkylene oxides containing four carbon atoms only
    • C10M2209/1065—Polyethers, i.e. containing di- or higher polyoxyalkylene groups of alkylene oxides containing four carbon atoms only used as base material
    • 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
    • C10M2215/02—Amines, e.g. polyalkylene polyamines; Quaternary amines
    • C10M2215/04—Amines, e.g. polyalkylene polyamines; Quaternary amines having amino groups bound to acyclic or cycloaliphatic carbon atoms
    • 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
    • C10M2215/08—Amides
    • 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
    • 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
    • C10N2030/02—Pour-point; Viscosity index
    • 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
    • C10N2030/08—Resistance to extreme temperature
    • 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
    • C10N2030/10—Inhibition of oxidation, e.g. anti-oxidants

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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 provides a wheel belt lubricating oil and a preparation method and application thereof, belonging to the technical field of wheel belt lubrication. The wheel belt lubricating oil comprises 48.5-88.7% of oil-soluble polyether, 5.0-15.0% of functionalized ethylene-propylene copolymer, 1.0-5.0% of hydrogenated styrene-diene copolymer, 5.0-30.0% of colloid nano graphite and 0.3-1.5% of oil-soluble nano copper particles. The invention adopts the oil-soluble polyether as the base oil, can volatilize rapidly at high temperature, can not generate sediment and gelatinous substances, can avoid smoking phenomenon and reduce the abrasion of particles; the functionalized ethylene propylene copolymer and the hydrogenated styrene diene copolymer are used as an adhesive, have good positive synergistic effect, increase the internal friction force between wheel belt lubricating oil molecules, greatly improve the solubility and the dispersion uniformity of the colloidal nano graphite and the oil-soluble nano copper particles in the base oil, and avoid agglomeration and agglomeration after long-term placement.

Description

Wheel belt lubricating oil and preparation method and application thereof
Technical Field
The invention relates to the technical field of belt lubrication, in particular to belt lubrication oil and a preparation method and application thereof.
Background
Rotary kilns are core equipment of cement manufacturing enterprises and are subjected to huge mechanical forces, thermal deformations, chemical attack and the like in high-temperature and heavy-load operation. The tyre is the most important supporting component of the rotary kiln, has large load, large torque and multiple supporting points, and has complex running system and plays a very key role in the stable running of the rotary kiln.
Because of the difference in thermal expansion rate and rigidity between the kiln body and the wheel belt, the inner diameter of the wheel belt needs to be designed to be larger than the outer diameter of the kiln body (including the backing plate), so that the kiln body (backing plate) and the wheel belt can generate certain dislocation phenomenon, namely rolling displacement, in the running process. The normal rolling displacement dislocation range is limited only by the diameter difference of the kiln body (including the backing plate) and the wheel belt, and occurs according to a certain proportion, if the lubrication between the wheel belt and the kiln body (including the backing plate) is improper or not, the rolling displacement abnormality occurs, the contact surface can be snapped or slipped, the phenomena can cause abnormal friction between the backing plate and the wheel belt, the shaking phenomenon occurs when the kiln body rotates, the breakage and the falling of refractory bricks in the kiln body are induced, and thus, the accidental maintenance of the kiln is caused and the additional production stopping loss is caused, so that the lubrication between the wheel belt and the backing plate is very important. The rotary kiln wheel belt normally works continuously at the high temperature of 270-370 ℃ and under the load of tens of tons, the working condition is very harsh, and before, gear oil or hydraulic oil is always used by each cement plant, but sediment and jelly can be rapidly formed at the high temperature, the abrasion of parts is increased, serious smoke phenomenon exists, the environment is polluted, and therefore, the lubricating and environment-friendly requirements are difficult to meet.
In recent years, special lubricating oil for wheel belts has been developed, wherein synthetic base oil is used, the lubricating oil can be volatilized and decomposed at high temperature, the pollution to the environment is reduced, and solid additives are introduced, so that the base oil can continuously act at high temperature after failure. At present, researchers at home and abroad have related researches and reports on the aspect of wheel-belt lubricating oil, but still have some defects. As disclosed in chinese patent CN 201110431023.4, a rotary kiln tyre lubricating oil and a manufacturing method thereof are disclosed, poly-alpha-olefin synthetic oil, composite calcium sulfonate grease, composite metal soap, nano colloid molybdenum disulfide powder, colloid graphite powder, nano soft metal powder and anti-burning agent are used as raw materials, so that the problem of poor lubrication of the rotary kiln tyre in a severe environment is solved, and the rotary kiln tyre lubricating oil has good wear resistance and high temperature resistance, but contains the composite calcium sulfonate grease and the composite metal soap, serious smoke problem exists in use under high temperature condition, pollution is serious, soap substances such as a thickening agent contained in the composite calcium sulfonate grease are dry and residual on the tyre after the light component base oil is volatilized, abrasion is increased, meanwhile, the adhesiveness of the rotary kiln tyre lubricating oil is poor, and the problem of oil throwing exists in use. The literature (2021, 6:8-12) reports that the preparation method of the wheel belt lubricating oil uses polyol ester and complex ester as base oil, graphite and molybdenum disulfide as solid additives, and a dispersing agent is used for dispersing the solid additives to prevent sedimentation, but the action of the dispersing agent is very limited due to higher content of the solid additives in the wheel belt lubricating oil, so that the sedimentation agglomeration and caking problems of the solid additives after long-term placement are still difficult to avoid, and the adopted dispersing agent, polyol ester and complex ester still cannot meet the high-temperature lubrication requirement of a production line of more than 8000t at the temperature of 350 ℃ although smoking is less under the working condition of a production line of less than 5000t at the cement factory.
Chinese patent CN202210269888.3 discloses a tyre lubricant, its preparation method and application, which adopts synthetic polyol ester base oil to compound polyol high-viscosity complex ester, and adopts a mixture of superfine graphite powder and superfine molybdenum disulfide powder as solid additive. Although the tyre lubricant is applied to a 5000t production line of a cement plant, has less smoke emission under the working condition of below 300 ℃ and can meet the lubrication requirement, the tyre lubricant is easy to agglomerate and has the problem of sedimentation of solid additives when stored for more than 6 months.
Disclosure of Invention
The invention aims to provide a wheel belt lubricating oil, a preparation method and application thereof, and the wheel belt lubricating oil provided by the invention has excellent storage stability, high temperature resistance and environmental protection, and has good extreme pressure wear resistance.
In order to achieve the above object, the present invention provides the following technical solutions:
the invention provides a wheel belt lubricating oil which comprises the following components in percentage by mass:
48.5 to 88.7 percent of oil-soluble polyether, 5.0 to 15.0 percent of functionalized ethylene propylene copolymer, 1.0 to 5.0 percent of hydrogenated styrene diene copolymer, 5.0 to 30.0 percent of colloid nano graphite and 0.3 to 1.5 percent of oil-soluble nano copper particles.
Preferably, the kinematic viscosity of the oil-soluble polyether at 40 ℃ is 15-250 mm 2 /s。
Preferably, the preparation raw materials of the oil-soluble polyether comprise a first monomer and a first initiator, wherein the first monomer comprises butylene oxide and propylene oxide, and the first initiator is an alcohol compound.
Preferably, the functionalized ethylene propylene copolymer is obtained by reacting an olefin copolymer with a functionalized component comprising one or more of an amine, an amide, a nitrogen-containing heterocyclic compound and an alcohol.
Preferably, the hydrogenated styrene diene copolymer is a star polymer, and the relative molecular weight is 50000-100000.
Preferably, the hydrogenated styrene diene copolymer is prepared from a second monomer and a second initiator; the second monomer includes styrene and butadiene, or the second monomer includes styrene and isoprene; the second initiator is sec-butyllithium.
Preferably, the colloidal nano graphite is obtained by dispersing graphite particles in an organic solvent; the granularity of the graphite particles is less than or equal to 2 mu m; the content of graphite particles in the colloid nano graphite is 3-25 wt%.
Preferably, the oil-soluble nano copper particles are nano copper particles with diisooctyl dithiophosphoric acid modified on the surfaces; the granularity of the nano copper particles is 2-30 nm.
The invention provides a preparation method of the wheel belt lubricating oil, which comprises the following steps:
mixing oil-soluble polyether, functionalized ethylene propylene copolymer, hydrogenated styrene diene copolymer, colloidal nano graphite and oil-soluble nano copper particles to obtain the wheel belt lubricating oil.
The invention provides the application of the belt lubricating oil in the rotary kiln belt lubrication or the belt lubricating oil prepared by the preparation method in the technical scheme.
The invention provides a wheel belt lubricating oil which comprises the following components in percentage by mass: 48.5 to 88.7 percent of oil-soluble polyether, 5.0 to 15.0 percent of functionalized ethylene propylene copolymer, 1.0 to 5.0 percent of hydrogenated styrene diene copolymer, 5.0 to 30.0 percent of colloid nano graphite and 0.3 to 1.5 percent of oil-soluble nano copper particles. According to the invention, oil-soluble polyether (OSP) is used as base oil, and compared with mineral oil and other synthetic oil, the polyether is easy to break under the action of high-temperature thermal oxidation to generate low-molecular carbonyl compounds, the viscosity is gradually reduced but not increased, and the low-molecular carbonyl compounds are quickly volatilized under the high-temperature condition, so that the polyether does not generate sediment and gelatinous substances under the high-temperature condition, thereby avoiding smoking phenomenon and reducing particulate matter abrasion; in addition, the oil-soluble polyether has excellent viscosity-temperature performance and low-temperature performance, so that the wheel belt lubricating oil can be sprayed and used smoothly under the low-temperature condition, and the blocking phenomenon is not easy to occur. The invention adopts the functionalized ethylene propylene copolymer and the hydrogenated styrene diene copolymer as the adhesive, has better positive synergistic effect, increases the internal friction force between wheel belt lubricating oil molecules, can greatly improve the solubility and the dispersion uniformity of the colloid nano graphite and the oil-soluble nano copper particles in the base oil, and avoids agglomeration after long-term placement. According to the invention, the colloid nano graphite and the oil-soluble nano copper particles are introduced as solid additives, the organically modified nano graphite particles and nano copper particles have better solubility in the base oil, can be uniformly dispersed in a system, can not be agglomerated and agglomerated to settle after long-term placement, and can play a good lubricating role after the base oil and organic molecules are decomposed and volatilized under the high-temperature condition of above 350 ℃ of the rotary kiln. By controlling the types and the proportions of the components, the lubricating oil for the rotary kiln wheel belt has excellent storage stability (no sedimentation after being placed for 12 months), high temperature resistance and environmental protection (no smoke generation during high-temperature use at 350 ℃), and good extreme pressure wear resistance, can be used for lubricating the rotary kiln wheel belt, and especially can meet the high-temperature lubricating requirement of the rotary kiln wheel belt at 350 ℃ of a production line above 8000t in a cement factory. The wheel belt lubricating oil provided by the invention has the advantages of reasonable raw material compatibility, simple preparation method, convenience in use and wide application range.
Detailed Description
The invention provides a wheel belt lubricating oil which comprises the following components in percentage by mass:
48.5 to 88.7 percent of oil-soluble polyether, 5.0 to 15.0 percent of functionalized ethylene propylene copolymer, 1.0 to 5.0 percent of hydrogenated styrene diene copolymer, 5.0 to 30.0 percent of colloid nano graphite and 0.3 to 1.5 percent of oil-soluble nano copper particles.
In the present invention, unless otherwise specified, the raw materials used are commercially available products well known to those skilled in the art or are prepared by methods well known to those skilled in the art.
The lubricating oil for the wheel belt according to the present invention comprises 48.5 to 88.7% of oil-soluble polyether (OSP), preferably 60.0 to 80.0%, more preferably 66.0 to 72.0% by mass. In the present invention, the kinematic viscosity of the oil-soluble polyether at 40℃is preferably 15 to 250mm 2 And/s, more preferably 20 to 50mm 2 Preferably 29 to 35mm 2 And/s. In the present invention, the raw materials for preparing the oil-soluble polyether preferably include a first monomer and a first initiator; the first monomer preferably comprises butylene oxide and propylene oxide, and the molar ratio of the butylene oxide to the propylene oxide is preferably 40-60: 40-60; the first initiator is preferably an alcohol compound, more preferably n-butanol. In the present invention, the oil-soluble polyether is preferably a synthetic oil OSP32. In an embodiment of the present invention, the synthetic oil OSP32 is purchased from Nanjing Gutian chemical Co., ltd, and has an kinematic viscosity of 31.35mm at 40 ℃ 2 And/s. The invention adopts the oil-soluble polyether as the base oil, has excellent viscosity-temperature performance, low-temperature performance, tribological performance and good additive solubility, and has a special high-temperature oxidative decomposition volatilization mechanism, so that the wheel belt lubricating oil is environment-friendly and free of smoke when being used at high temperature, can be sprayed and used smoothly at low temperature, and is not easy to cause blockage.
The lubricating oil for a tire according to the present invention comprises 5.0 to 15.0% by mass, preferably 6.0 to 12.0% by mass, more preferably 8.0 to 10.0% by mass of a functionalized ethylene-propylene copolymer. In the present invention, the functionalized ethylene propylene copolymer is preferably an olefin copolymer reacted with a functionalized component, preferably comprising one or more of an amine, an amide, a nitrogen-containing heterocyclic compound, and an alcohol, more preferably an amide. In the present invention, the functionalized ethylene propylene copolymer is preferably Hitec 5777 from Afton corporation. The functionalized ethylene propylene copolymer is used as an adhesive, so that the solid additive (colloid nano graphite and oil-soluble nano copper particles) can be well dispersed, and the storage stability of the wheel belt lubricating oil can be improved.
The lubricating oil for a tire according to the present invention comprises 1.0 to 5.0% by mass, preferably 1.5 to 3.5% by mass, more preferably 2.0 to 3.0% by mass of a hydrogenated styrene diene copolymer. In the present invention, the hydrogenated styrene diene copolymer is preferably a star polymer, and the relative molecular weight is preferably 50000 to 100000. In the present invention, the preparation raw material of the hydrogenated styrene diene copolymer preferably comprises a second monomer and a second initiator; the second monomer preferably comprises styrene and butadiene, or the second monomer preferably comprises styrene and isoprene; the second initiator is preferably sec-butyllithium; in the present invention, the hydrogenated styrene diene copolymer is preferably a hydrogenated styrene isoprene star copolymer, and the relative molecular weight is preferably 50000 to 100000. In the present invention, the hydrogenated styrene isoprene star copolymer is preferably SV260 of Shell company. The hydrogenated styrene diene copolymer is preferably adopted as an adhesive, and the hydrogenated styrene diene copolymer and the functionalized ethylene propylene copolymer are synergistic, so that the internal friction of the wheel belt lubricating oil is improved, the solid additive can be better dispersed, the storage stability of the wheel belt lubricating oil is further improved, the adhesive performance of the wheel belt lubricating oil is improved, and the oil throwing phenomenon can not occur under the working condition of low speed and heavy load of the rotary kiln.
The lubricating oil for the wheel belt comprises 5.0-30.0% of colloidal nano graphite, preferably 10.0-25.0% of colloidal nano graphite, and more preferably 15.0-20.0% of colloidal nano graphite. In the invention, the colloid nano graphite is preferably obtained by dispersing graphite particles in an organic solvent; the particle size of the graphite particles is preferably less than or equal to 2 mu m; the content of graphite particles in the colloidal nano-graphite is preferably 3 to 25wt%, more preferably 10 to 20wt%, and even more preferably 13 to 15wt%; the organic solvent is preferably a ketone organic solvent, the boiling range of the organic solvent is preferably 70-150 ℃, and the melting point is preferably < -20 ℃. Specifically, the colloid nano graphite is black viscous suspension liquid. In the invention, the colloid nano graphite is preferably purchased from Qingdao Huatai lubrication sealing technology Co., ltd, the model is TS-O, the particle size of the graphite particles is less than or equal to 2 mu m, and the content is 15wt%. The invention adopts the colloid nano graphite as a solid additive, can be well dispersed in base oil (oil-soluble polyether) under the action of an adhesive (functionalized ethylene-propylene copolymer and hydrogenated styrene-diene copolymer), so that the wheel belt lubricating oil can exert excellent lubricating performance under the high-temperature condition, and has excellent storage stability.
The lubricating oil for the wheel belt comprises 0.3 to 1.5 percent of oil-soluble nano copper particles, preferably 0.5 to 1.0 percent of oil-soluble nano copper particles by mass percent. In the present invention, the oil-soluble nano copper particles are preferably nano copper particles with surface modified with diisooctyl dithiophosphoric acid, and the particle size of the nano copper particles is preferably 2 to 30nm. The source of the oil-soluble nano copper particles is not particularly limited, and the oil-soluble nano copper particles can be prepared by a method well known to a person skilled in the art (patent CN201910999944.7 is an oil-soluble nano copper and a preparation method thereof). According to the invention, the oil-soluble nano copper particles are preferably used as the solid additive, can be well dispersed in the base oil under the action of the adhesive, improve the storage stability, and have better synergistic effect with the colloidal nano graphite, so that the lubricating performance of the wheel belt lubricating oil can be further improved.
The invention provides a preparation method of the wheel belt lubricating oil, which comprises the following steps:
mixing oil-soluble polyether, functionalized ethylene propylene copolymer, hydrogenated styrene diene copolymer, colloidal nano graphite and oil-soluble nano copper particles to obtain the wheel belt lubricating oil.
In the present invention, the mixing preferably includes: the soluble polyether, the functionalized ethylene propylene copolymer and the hydrogenated styrene diene copolymer are subjected to first stirring and mixing, and then the obtained mixed material is subjected to second stirring and mixing with the colloidal nano graphite and the oil-soluble nano copper particles. In the present invention, the temperature of the first stirring and mixing is preferably 55 to 85 ℃, more preferably 60 to 80 ℃; the time is preferably 2 to 5 hours. In the present invention, the temperature of the second stirring and mixing is preferably 55 to 85 ℃, more preferably 60 to 80 ℃; the time is preferably 2 to 5 hours. In the invention, the total feeding time of the colloid nano graphite and the oil-soluble nano copper particles is preferably 2-3 h, the colloid nano graphite and the oil-soluble nano copper particles are preferably fed in batches, and the feeding times are independently preferably more than 5 times. The stirring rate of the first stirring and mixing and the second stirring and mixing is not particularly limited, and stirring rates well known to those skilled in the art may be used. The vessel used for the first stirring and mixing is not particularly limited, and a stirring vessel known to those skilled in the art may be used. In the present invention, the second agitation mixing vessel is preferably a colloid mill. The present invention preferably performs the first agitation mixing under the above temperature conditions, and enables the oil-soluble polyether to be thoroughly mixed with the functionalized ethylene propylene copolymer and the hydrogenated styrene diene copolymer. The second stirring and mixing in the present invention is preferably performed under the above temperature conditions and in the above colloid mill, and the solid additive can be uniformly dispersed in the mixed system formed by the base oil and the adhesive.
The invention provides the application of the belt lubricating oil in the rotary kiln belt lubrication or the belt lubricating oil prepared by the preparation method in the technical scheme. The rotary kiln is not particularly limited in type, and can be a rotary kiln in cement mine industry or a rotary kiln in chemical industry.
The technical solutions of the present invention will be clearly and completely described in the following in connection with the embodiments of the present invention. It will be apparent that the described embodiments are only some, but not all, embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The partial preparation raw material sources referred to in the following examples and comparative examples include:
oil Soluble Polyether (OSP) synthetic oil OSP32 is purchased from Nanjing Gutian chemical Co., ltd, and has an kinematic viscosity of 31.35mm at 40 DEG C 2 /s；
The functionalized ethylene propylene copolymer is Hitec 5777 from Afton;
the hydrogenated styrene isoprene star copolymer is SV260 of Shell company;
the colloid nano graphite is TS-O of Qingdao Huatai lubrication sealing technology Co., ltd, the particle size of the graphite particles is less than or equal to 2 mu m, and the content is 15wt%.
The oil-soluble nano copper particles were prepared according to the method of example 1 in patent CN 201910999944.7.
Example 1
48.5g of oil-soluble polyether synthetic oil OSP32 is weighed, heated to 70+/-5 ℃ and stirred, 15.0g of functionalized ethylene-propylene copolymer and 5.0g of hydrogenated styrene-isoprene star copolymer are added, stirring is carried out for 3 hours at 70+/-5 ℃, the mixture is added into a colloid mill, then 30.0g of colloid nano graphite (added in 5 times) and 1.5g of oil-soluble nano copper particles (added in 5 times) are added in 2 hours, stirring is carried out for 3 hours at 70+/-5 ℃, and cooling is carried out to room temperature (25 ℃) to obtain the wheel lubricating oil.
Example 2
66.0g of oil-soluble polyether synthetic oil OSP32 is weighed, heated to 70+/-5 ℃ and stirred, 10.0g of functionalized ethylene-propylene copolymer and 3.0g of hydrogenated styrene-isoprene star copolymer are added, stirring is carried out for 3 hours at 70+/-5 ℃, the mixture is added into a colloid mill, then 20.0g of colloid nano graphite (added in 5 times) and 1.0g of oil-soluble nano copper particles (added in 5 times) are added in 2 hours, stirring is carried out for 3 hours at 70+/-5 ℃, and cooling is carried out to room temperature (25 ℃) to obtain the wheel lubricating oil.
Example 3
88.7g of oil-soluble polyether synthetic oil OSP32 is weighed, heated to 70+/-5 ℃ and stirred, then 5.0g of functionalized ethylene-propylene copolymer and 1.0g of hydrogenated styrene-isoprene star copolymer are added, stirring is carried out for 3 hours at 70+/-5 ℃, the mixture is added into a colloid mill, then 5.0g of colloid nano graphite (added in 5 times) and 0.3g of oil-soluble nano copper particles (added in 5 times) are added in 2 hours, stirring is carried out for 3 hours at 70+/-5 ℃, and cooling is carried out to room temperature (25 ℃) to obtain the wheel lubricating oil.
Comparative example 1
A wheel belt lubricating oil was prepared as in example 3, except that 5.0g of the functionalized ethylene propylene copolymer and 1.0g of the hydrogenated styrene isoprene star copolymer were replaced with 6.0g of the functionalized ethylene propylene copolymer.
Comparative example 2
A wheel belt lubricating oil was prepared as in example 3, except that 5.0g of colloidal nano-graphite and 0.3g of oil-soluble nano-copper particles were replaced with 5.3g of colloidal nano-graphite.
Test case
The performance test was performed on the lubricating oils for wheel belts prepared in examples and comparative examples, and specifically as follows:
1. testing the sintering load P of the wheel belt lubricating oil by adopting a lubricating oil extreme pressure performance measurement method (GB/T3142) D The larger the value, the more load bearing capacity.
2. And evaluating whether the wheel belt lubricating oil generates smoke or not in use by adopting a simulated smoke test, specifically, taking out the steel sheet No. 10 after the steel sheet No. 10 is kept in a muffle furnace at 350 ℃ for 10min, immediately dripping 5-10 drops of the wheel belt lubricating oil on the surface of the steel sheet No. 10 under the condition of room temperature, and observing whether the smoke is generated or not.
3. The adhesion performance of the wheel belt lubricating oil on the surface of the friction pair is tested by adopting an adhesion test method, specifically, a No. 45 steel sheet with the thickness of 60mm multiplied by 80mm is taken, 3.0g of the wheel belt lubricating oil is weighed as test oil, the wheel belt lubricating oil is uniformly coated on the surface of the No. 45 steel sheet, then the wheel belt lubricating oil is vertically hung at room temperature, the residual test oil quantity on the surface of the No. 45 steel sheet is weighed after 48 hours, the adhesion of the oil product is judged by the oil retention rate (residual test oil quantity after test/test oil quantity before test), and the larger the value is, the better the adhesion is represented.
4. The high-temperature storage stability of the tire lubricating oil is tested by adopting a high-temperature storage test method, specifically, 100.0g of the tire lubricating oil is taken as test oil, the test oil is put into a glass beaker, the glass beaker is placed in a baking oven at 50 ℃ for 15 days, and then whether the test oil is layered or not is observed, and whether sediment exists at the bottom of the beaker or not is observed.
5. The normal temperature storage stability of the wheel belt lubricating oil is tested by adopting a normal temperature storage test method, specifically, 100.0g of the wheel belt lubricating oil is taken as test oil, the test oil is put into a glass beaker, the glass beaker is placed for 12 months at room temperature, and then whether layering exists in the test oil or not and whether precipitation exists at the bottom of the beaker or not is observed.
The performance of the lubricating belt oils prepared in examples and comparative examples was tested and the results are shown in Table 1.
Table 1 results of performance test of the lubricating oil for wheel bands prepared in examples and comparative examples
As shown in Table 1, the lubricating oil for wheel belts provided by the invention has excellent storage stability (no sedimentation after being placed at normal temperature for 12 months), high temperature resistance and environmental protection (no smoke generation during use at high temperature of 350 ℃), and has good extreme pressure wear resistance. Meanwhile, compared with comparative example 1, the lubricating oil for the wheel belt prepared in example 3 has excellent adhesion and storage stability, which shows that the functionalized ethylene-propylene copolymer and the hydrogenated styrene-diene copolymer adopted in the invention can generate better positive synergistic effect, thereby being beneficial to improving the adhesion performance and storage stability of the lubricating oil for the wheel belt and preventing the phenomenon of sedimentation and agglomeration of solid additives caused by long-term placement; compared with comparative example 2, the wheel belt lubricating oil prepared in example 3 has excellent extreme pressure wear resistance, which shows that the invention adopts the combination of the colloid nano graphite and the oil-soluble nano copper particles, can generate good synergistic effect, and is beneficial to improving the extreme pressure performance of the wheel belt lubricating oil.
The foregoing is merely a preferred embodiment of the present invention and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present invention, which are intended to be comprehended within the scope of the present invention.

Claims (10)

1. The wheel belt lubricating oil is characterized by comprising the following components in percentage by mass:
48.5 to 88.7 percent of oil-soluble polyether, 5.0 to 15.0 percent of functionalized ethylene propylene copolymer, 1.0 to 5.0 percent of hydrogenated styrene diene copolymer, 5.0 to 30.0 percent of colloid nano graphite and 0.3 to 1.5 percent of oil-soluble nano copper particles.
2. The wheel belt lubricating oil according to claim 1, wherein the oil-soluble polyether has an kinematic viscosity at 40 ℃ of 15 to 250mm 2 /s。
3. The wheel belt lubricating oil according to claim 1 or 2, wherein the oil-soluble polyether is prepared from a first monomer and a first initiator, the first monomer comprises butylene oxide and propylene oxide, and the first initiator is an alcohol compound.
4. The wheel belt lubricating oil of claim 1, wherein the functionalized ethylene propylene copolymer is obtained by reacting an olefin copolymer with a functionalized component comprising one or more of an amine, an amide, a nitrogen-containing heterocyclic compound, and an alcohol.
5. The lubricating oil for a tire according to claim 1, wherein the hydrogenated styrene-diene copolymer is a star polymer and has a relative molecular mass of 50000 to 100000.
6. The wheel belt lubricating oil of claim 1 or 5, wherein the hydrogenated styrene diene copolymer is prepared from a starting material comprising a second monomer and a second initiator; the second monomer includes styrene and butadiene, or the second monomer includes styrene and isoprene; the second initiator is sec-butyllithium.
7. The lubricating oil for wheel belts according to claim 1, characterized in that the colloidal nano-graphite is obtained by dispersing graphite particles in an organic solvent; the granularity of the graphite particles is less than or equal to 2 mu m; the content of graphite particles in the colloid nano graphite is 3-25 wt%.
8. The wheel belt lubricating oil according to claim 1, wherein the oil-soluble nano-copper particles are nano-copper particles surface-modified with diisooctyl dithiophosphoric acid; the granularity of the nano copper particles is 2-30 nm.
9. The method for producing a lubricating oil for a tire according to any one of claims 1 to 8, comprising the steps of:
mixing oil-soluble polyether, functionalized ethylene propylene copolymer, hydrogenated styrene diene copolymer, colloidal nano graphite and oil-soluble nano copper particles to obtain the wheel belt lubricating oil.
10. Use of the belt lubricating oil according to any one of claims 1 to 8 or the belt lubricating oil prepared by the preparation method according to claim 9 in rotary kiln belt lubrication.
CN202310869153.9A 2023-07-17 2023-07-17 Wheel belt lubricating oil and preparation method and application thereof Pending CN116891779A (en)

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