CN110819421A - Electric bicycle lubricating oil - Google Patents
Electric bicycle lubricating oil Download PDFInfo
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- CN110819421A CN110819421A CN201810912213.XA CN201810912213A CN110819421A CN 110819421 A CN110819421 A CN 110819421A CN 201810912213 A CN201810912213 A CN 201810912213A CN 110819421 A CN110819421 A CN 110819421A
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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
- 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
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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
- C10M2201/00—Inorganic compounds or elements as ingredients in lubricant compositions
- C10M2201/06—Metal compounds
- C10M2201/061—Carbides; Hydrides; Nitrides
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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
- 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
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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
- 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
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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
- 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
- C10M2209/104—Polyethers, i.e. containing di- or higher polyoxyalkylene groups of alkylene oxides containing two carbon atoms only
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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
- 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
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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
- 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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- 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
- C10M2219/04—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions containing sulfur-to-oxygen bonds, i.e. sulfones, sulfoxides
- C10M2219/044—Sulfonic acids, Derivatives thereof, e.g. neutral salts
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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
- C10M2219/00—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions
- C10M2219/04—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions containing sulfur-to-oxygen bonds, i.e. sulfones, sulfoxides
- C10M2219/046—Overbasedsulfonic acid salts
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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
- C10M2223/00—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions
- C10M2223/02—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions having no phosphorus-to-carbon bonds
- C10M2223/04—Phosphate esters
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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
- C10M2223/00—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions
- C10M2223/02—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions having no phosphorus-to-carbon bonds
- C10M2223/04—Phosphate esters
- C10M2223/045—Metal containing thio derivatives
Abstract
The invention discloses an electric bicycle lubricating oil which comprises the following components in percentage by weight: 10-25% of detergent dispersant, 5-15% of antioxidant corrosion inhibitor, 5-15% of extreme pressure antiwear agent, 10-15% of tackifier, 1-3% of ferrite-based magnetofluid and the balance of base oil. The lubricating oil additive of the invention can greatly improve the wear resistance and friction reduction performance of lubricating oil, enhance the thermal stability, and change iron powder and mud oil generated by the working of a crankshaft and a connecting rod bush into nanometer-scale balls, thereby reducing the friction of a machine, reducing the oil temperature and prolonging the service life of the lubricating oil and the machine.
Description
Technical Field
The invention relates to electric bicycle lubricating oil.
Background
Frictional wear is a ubiquitous natural phenomenon, while electric bicycle lubricating oil is one of the most effective ways to reduce friction and resist wear, and in-situ repair of worn surfaces in motion has been a constant pursuit of lubrication workers. The electric bicycle lubricating oil generally consists of two parts, namely base oil and additives, wherein the base oil is the main component of the electric bicycle lubricating oil and determines the basic properties of the electric bicycle lubricating oil, and the additives can compensate and improve certain properties of the base oil. The lubricating oil for electric bicycle is separated from vegetable oil, petroleum lubricating oil for electric bicycle and synthetic lubricating oil for electric bicycle. The consumption of the petroleum electric bicycle lubricating oil accounts for more than 97 percent of the total consumption, so the petroleum electric bicycle lubricating oil is often referred to as petroleum electric bicycle lubricating oil. The lubricating oil is mainly used for reducing friction between surfaces of moving parts, has the functions of cooling, sealing, corrosion prevention, rust prevention, insulation, power transmission, impurity cleaning and the like for machine equipment, and mainly takes lubricating oil fraction and residual oil fraction of an electric bicycle from a crude oil distillation device as raw materials. The most important properties of electric bicycle lubricants are viscosity, oxidation stability and lubricity, which are closely related to the composition of the electric bicycle lubricant fraction. The viscosity is an important quality index reflecting the fluidity of the lubricating oil for the electric bicycle, different use conditions have different viscosity requirements, the lubricating oil for the electric bicycle with high viscosity is selected for heavy-load and low-speed machines, and the oxidation stability represents the oxidation resistance of the oil product in the use environment due to the temperature, oxygen in the air and the catalytic action of metals. After oxidation of the oil, depending on the conditions of use, fine, asphaltene-based carbon-like substances, viscous lacquer-like substances or films, or viscous water-containing substances are formed, which reduce or lose their properties of use. Lubricity represents the friction reduction performance of the electric bicycle lubricating oil. The concept of an additive for electric bicycle lubricating oil is to add one or more compounds to the lubricant to give the lubricant certain new properties or to improve some of the properties already present in the lubricant. The additive mainly comprises antioxidant, antiwear agent, friction modifier (oiliness agent), extreme pressure additive, detergent, dispersant, foam inhibitor, anticorrosion and antirust agent, pour point improver, viscosity index improver and the like according to functions. The additives sold in the market are generally composite products of the above single additives, and the difference is that the components of the single additives are different and the proportion of the single additives in the composite additives is different.
At present, most of domestic and foreign researches and applications are organic additives, while few researches on inorganic additives are carried out, and the application of the inorganic additives is particularly that of the phoenix-hair unicorn. With the intensive development of research in the field of electric bicycle lubricating oil, people gradually find that many inorganic additives show good performance, some of which are even obviously superior to organic additives, but the application of the inorganic additives is limited because the inorganic additives are insoluble or difficultly soluble in oil and are also difficultly stably dispersed in the electric bicycle lubricating oil. In recent years, in the process of seeking for the anti-wear and anti-friction additive, domestic and foreign scholars find that some nano particles can obviously improve the tribological performance of the electric bicycle lubricating oil through the friction self-repairing function, so as to achieve the aims of resisting wear and reducing friction. Therefore, the research of applying nanoparticles as lubricating additives in electric bicycle lubricating oils has become a focus of research in the field of tribology in recent years.
In the production work, the iron powder and the mud oil generated by the crankshaft and the connecting rod bush often influence the operation of the apparatus, even accelerate the aging of the apparatus for a long time, and the lubricating oil additive for the electric bicycle in the prior art has poor wear resistance and friction reduction performance and thermal stability and can not effectively solve the problems of the iron powder and the mud oil.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides novel electric bicycle lubricating oil which can greatly improve the wear-resistant and friction-reducing performance of the electric bicycle lubricating oil, enhance the thermal stability and change iron powder and oil sludge generated by the working of a crankshaft and a connecting rod bush into nano-scale balls, thereby reducing the friction of a machine, reducing the oil temperature and prolonging the service life of the electric bicycle lubricating oil and the machine.
In order to achieve the purpose, the technical scheme of the invention is as follows:
the electric bicycle and electric bicycle lubricating oil comprises the following components in percentage by weight:
10-25% of detergent dispersant, 5-15% of antioxidant corrosion inhibitor, 5-15% of extreme pressure antiwear agent, 10-15% of tackifier, 1-3% of ferrite-based magnetofluid and the balance of base oil.
The detergent dispersant is one or more of low-base-number synthetic calcium alkylbenzene sulfonate, high-base-number linear alkylbenzene synthetic calcium sulfonate, long-chain linear alkylbenzene high-base-number synthetic calcium sulfonate, high-base-number synthetic calcium dialkyl benzene sulfonate, long-chain linear alkylbenzene high-base-number synthetic magnesium sulfonate, high-base-number sulfurized calcium alkyl phenate, polyisobutenyl succinimide, boronized polyisobutenyl succinimide, high-molecular-weight polyisobutenyl succinimide and boronized high-molecular-weight polyisobutenyl succinimide.
The antioxidant corrosion inhibitor is one or the mixture of more than one of zinc butyl alkyl dithiophosphate, zinc bis-octyl dithiophosphate, basic zinc bis-octyl dithiophosphate, zinc secondary alkyl zinc propyl dithiophosphate and zinc primary and secondary alkyl dithiophosphate.
The extreme pressure antiwear agent is sulfurized olefin, phosphate or nitride.
The tackifier is one or a mixture of more than one of polyvinyl n-butyl ether, polymethacrylate, polyacrylate, polyisobutylene, atactic polypropylene, ethylene-propylene copolymer and butadiene rubber.
The ferrite-based magnetofluid is Fe3O4Magnetic powder.
Said Fe3O4The preparation method of the magnetic powder comprises the following steps:
A. preparation of Fe3O4Magnetic powder: and (2) mixing a ferrous salt solution and a ferric salt solution according to a ratio of 1: 2-1: 1, quickly adding the ferric salt solution into an excessive NaOH solution precipitator added with oleic acid at room temperature in an alkaline manner, controlling the pH to be 9-10, stirring for reacting for 8-12 minutes, and then carrying out precipitation separation, washing and drying on the obtained product to obtain the composite.
B、Fe3O4Surface modification of magnetic powder: the Fe prepared in the step A is added3O4And adding the powder into a silane coupling agent solution with the weight percentage of 1-3%, performing ultrasonic dispersion, stirring, drying and grinding to obtain the silicon nitride/.
And D, the precipitation separation method in the step A comprises the steps of putting a sample into a large beaker, adding a large amount of distilled water or ethanol, carrying out ultrasonic dispersion, and then putting the beaker on a magnet to carry out solid-liquid separation.
The preparation method of the silane coupling agent comprises the steps of dissolving the silane coupling agent in water, preparing the silane coupling agent into a 0.5-2% solution, adding glacial acetic acid, adjusting the pH value to 5.5, and stirring for 5 minutes to obtain the silane coupling agent.
And B, performing ultrasonic dispersion in the step B for 30 minutes at a stirring temperature of 80 ℃, stirring for 30 minutes at a drying temperature of 100 ℃, and drying for 2 hours.
The detergent dispersant is a substance with surface activity, which can adsorb solid particle pollutant in oil, disperse low-temperature oil sludge in the oil and suspend the pollutant on the surface of the oil so as to filter the pollutant in the lubricating oil circulation of the electric bicycle, thus ensuring that the oil participating in the lubricating circulation is clean and reducing the high temperature and the formation of paint film. It also has washing, antioxidant and antiseptic effects. The dosage of the detergent dispersant is strictly controlled, and the quality of the electric bicycle lubricating oil is mainly distinguished on the performance of resisting high-temperature and low-temperature deposits and paint film formation in a certain sense, and also can be expressed on the performance and the adding amount of the detergent dispersant in the electric bicycle lubricating oil.
The antioxidant corrosion inhibitor is used because the lubricating oil of the electric bicycle is in contact with air in use, various mechanical equipment can generate heat to raise the temperature of a friction part in operation, and various metal materials in the equipment, such as copper, iron and the like, can play a role of catalysis to accelerate the oxidative deterioration of oil products, and finally the viscosity of the lubricating oil of the electric bicycle is increased to generate acidic substances to corrode the metal materials, and various carbon-shaped or asphalt-shaped precipitated substances, such as paint films and the like, can be generated to block pipelines. All the changes bring adverse effects on the continuous use of oil products and the normal operation of equipment, so that the oil products are required to have better anti-oxidation and anti-corrosion effects, and the anti-oxidation and anti-corrosion additives are added into the oil products to inhibit the oxidation of the oil products and passivate metals so as to inhibit the catalytic action of the metals on the oxidation, thereby achieving the purposes of prolonging the use of the oil products and protecting machines.
The extreme pressure antiwear agent can react with metal on a friction surface under the condition of low-speed high-load or high-speed impact load friction to generate a compound with shearing force and melting point lower than those of the original metal, so that an extreme pressure solid lubricating film is formed to prevent sintering. The viscosity increaser is also called as a thickening agent and can increase the viscosity of the oil and improve the viscosity-temperature performance of the oil.
Nano Fe3O4The magnetic powder has the characteristics of large specific surface area, good diffusivity, easy sintering, low melting point and the like, so the nano Fe is used3O4The novel electric bicycle lubricating oil prepared by taking the magnetic powder as the additive is applied to a friction system, plays a role in resisting wear and reducing friction in an action mode different from that of the traditional additive, can form a film with one layer easy to shear on a friction surface, reduces the friction coefficient, can be used for filling and repairing the friction surface to a certain extent, and plays a self-repairing role. The nano particles can more easily enter the friction surface due to small granularity and high surface activity, so that the friction surface can be well separated, and the nano particles can be directly adsorbed to partsThe scratches or the microcomputer has a repairing function, the anti-wear and anti-friction effects are improved, and the nano particles are dispersed in the oil in a colloid-like manner, so that the nano particles can be deposited on the sliding surface when the lubricating oil for the electric bicycle leaks, and have a lubricating function in an emergency.
Nano Fe used in the invention3O4The antiwear and antifriction mechanism of the magnetic powder is mainly realized by the following three ways:
① the friction resistance and the friction coefficient are reduced by the action similar to that of a micro bearing;
② under the condition of friction, the nanoparticles form a smooth protective layer on the surface of the friction pair;
③ can be used for repairing the surface of friction pair by filling micro pits and damaged parts.
Therefore, the nano particles as the lubricating additive are a novel high-temperature-resistant, high-performance and pollution-free in-situ dynamic self-repairing additive.
In order to further improve the lubricating property, the service cycle and the bearing capacity, a rust inhibitor, a pour point depressant, an anti-emulsifier, a defoaming agent and the like are preferably added into the components.
The invention has the beneficial effects that:
(1) the magnetic nano Fe3O4 particles are used as a magnetic nano electric bicycle lubricating oil additive, so that the magnetic nano electric bicycle lubricating oil has good lubricating property, has magnetism and fluidity under the action of a non-uniform magnetic field, can accurately fill the lubricating surface to realize continuous lubrication, can offset the action of gravity and centripetal force in the lubricating process, and is not easy to leak and prevent external pollution. And the lamellar structure of the oil-based composite material has self-lubricating effect, can be uniformly and stably dispersed in base oil after being modified, and can be placed for a long time without precipitation.
(2) The electric bicycle lubricating oil disclosed by the invention is prepared by combining and matching a plurality of additives together, so that the performances of various aspects of the electric bicycle lubricating oil are greatly improved, the stability of the electric bicycle lubricating oil is improved, the lubricating effect is enhanced, and the service life of the electric bicycle lubricating oil is prolonged.
Detailed Description
The present invention will be described in further detail with reference to examples, but the embodiments of the present invention are not limited thereto.
Example 1
The invention relates to an electric bicycle lubricating oil, which comprises the following components in percentage by weight:
10% of detergent dispersant, 5% of antioxidant and corrosion inhibitor, 5% of extreme pressure antiwear agent, 10% of tackifier, 1% of ferrite-based magnetofluid and 69% of base oil.
The detergent dispersant is low-base-number synthetic calcium alkyl benzene sulfonate.
The antioxidant corrosion inhibitor is zinc butyl alkyl dithiophosphate.
The extreme pressure antiwear agent is sulfurized olefin.
The tackifier is polyvinyl n-butyl ether.
The ferrite-based magnetofluid is Fe3O4Magnetic powder.
Said Fe3O4The preparation steps of the magnetic powder are as follows:
A. preparation of Fe3O4Magnetic powder: mixing ferrous salt solution and ferric salt solution according to a ratio of 1:2, quickly adding the ferric salt solution into excessive NaOH solution precipitator added with oleic acid at room temperature in an alkaline manner, controlling the pH value to be 9, stirring for reacting for 8 minutes, and then separating, washing and drying the precipitate to obtain the composite ferric salt.
B、Fe3O4Surface modification of magnetic powder: the Fe prepared in the step A is added3O4Adding the powder into 1 wt% silane coupling agent solution, performing ultrasonic dispersion, stirring, drying, and grinding to obtain the final product.
And D, the precipitation separation method in the step A comprises the steps of putting a sample into a large beaker, adding a large amount of distilled water or ethanol, carrying out ultrasonic dispersion, and then putting the beaker on a magnet to carry out solid-liquid separation.
The preparation method of the silane coupling agent comprises the steps of dissolving the silane coupling agent in water to prepare a 0.5% solution, then adding glacial acetic acid, adjusting the pH value to 5.5, and stirring for 5 minutes to obtain the silane coupling agent.
And B, performing ultrasonic dispersion in the step B for 30 minutes at a stirring temperature of 80 ℃, stirring for 30 minutes at a drying temperature of 100 ℃, and drying for 2 hours.
Example 2
The invention relates to an electric bicycle lubricating oil, which comprises the following components in percentage by weight:
18% of detergent dispersant, 10% of antioxidant and corrosion inhibitor, 10% of extreme pressure antiwear agent, 13% of tackifier, 2% of ferrite-based magnetic fluid and 47% of base oil.
The detergent dispersant is calcium sulfonate synthesized by high-base number linear alkyl benzene.
The antioxidant corrosion inhibitor is zinc salt of sulfur, phosphorus and bi-octyl primary alkyl.
The extreme pressure antiwear agent is phosphate.
The tackifier is polymethacrylate.
The ferrite-based magnetofluid is Fe3O4Magnetic powder.
Said Fe3O4The preparation steps of the magnetic powder are as follows:
A. preparation of Fe3O4Magnetic powder: mixing ferrous salt solution and ferric salt solution according to the proportion of 1:1.5, quickly adding the ferric salt solution into excessive NaOH solution precipitator added with oleic acid at room temperature in an alkaline manner, controlling the pH to be 9.5, stirring for reaction for 10 minutes, and then separating, washing and drying the precipitate to obtain the composite ferric salt.
B、Fe3O4Surface modification of magnetic powder: the Fe prepared in the step A is added3O4Adding the powder into a silane coupling agent solution with the weight percentage of 2%, performing ultrasonic dispersion, stirring, drying and grinding to obtain the silicon nitride/silicon.
And D, the precipitation separation method in the step A comprises the steps of putting a sample into a large beaker, adding a large amount of distilled water or ethanol, carrying out ultrasonic dispersion, and then putting the beaker on a magnet to carry out solid-liquid separation.
The preparation method of the silane coupling agent comprises the steps of dissolving the silane coupling agent in water to prepare a 1% solution, then adding glacial acetic acid, adjusting the pH value to 5.5, and stirring for 5 minutes to obtain the silane coupling agent.
And B, performing ultrasonic dispersion in the step B for 30 minutes at a stirring temperature of 80 ℃, stirring for 30 minutes at a drying temperature of 100 ℃, and drying for 2 hours.
Example 3
The invention relates to an electric bicycle lubricating oil, which comprises the following components in percentage by weight:
25% of detergent dispersant, 15% of antioxidant and corrosion inhibitor, 15% of extreme pressure antiwear agent, 15% of tackifier, 3% of ferrite-based magnetofluid and 27% of base oil.
The detergent dispersant is long-chain linear alkyl benzene high-base number synthetic calcium sulfonate.
The oxidation and corrosion inhibitor is basic zinc salt of sulfur, phosphorus and bi-octyl primary alkyl.
The extreme pressure antiwear agent is nitride.
The tackifier is polyacrylate.
The ferrite-based magnetofluid is Fe3O4Magnetic powder.
Said Fe3O4The preparation steps of the magnetic powder are as follows:
A. preparation of Fe3O4Magnetic powder: and (2) mixing a ferrous salt solution and a ferric salt solution according to a ratio of 1: 2-1: 1, quickly adding the ferric salt solution into an excessive NaOH solution precipitator added with oleic acid at the room temperature in an alkaline manner, controlling the pH to be 10, stirring for reacting for 12 minutes, and then carrying out precipitation separation, washing and drying on the solution to obtain the composite.
B、Fe3O4Surface modification of magnetic powder: the Fe prepared in the step A is added3O4Adding the powder into 3 wt% silane coupling agent solution, performing ultrasonic dispersion, stirring, drying, and grinding to obtain the final product.
And D, the precipitation separation method in the step A comprises the steps of putting a sample into a large beaker, adding a large amount of distilled water or ethanol, carrying out ultrasonic dispersion, and then putting the beaker on a magnet to carry out solid-liquid separation.
The preparation method of the silane coupling agent comprises the steps of dissolving the silane coupling agent in water to prepare a 2% solution, then adding glacial acetic acid, adjusting the pH value to 5.5, and stirring for 5 minutes to obtain the silane coupling agent.
And B, performing ultrasonic dispersion in the step B for 30 minutes at a stirring temperature of 80 ℃, stirring for 30 minutes at a drying temperature of 100 ℃, and drying for 2 hours.
Example 4
A vertical friction and wear testing machine is adopted to carry out an anti-wear and anti-friction test, and a four-ball test method is adopted as a test method.
The four ball test standards are: the rotating speed 1450r/min, the load 392N and the time 30 min. The steel balls used in the test are manufactured according to GB/308-89, GCr15, second-level steel balls with the diameter of 12.7mm and the hardness of 64-66 HRC. In the test, the test oil is injected into an oil cup containing the steel ball, the liquid level just exceeds the surface of the steel ball, the applied vertical load P is 392N, the friction torque is measured, and the formula is shown as follows: mu =0.233 × T/P (where μ is a friction factor and T is a friction torque), the friction factor was calculated and once used to evaluate the friction factor μ and the wear amount of the lubricating oil for electric bicycles of the examples of the present invention and the 20# standard machine oil.
The four-ball test samples are 20# standard mechanical oil and lubricating oil for the electric bicycle in the invention, the steel ball and the ring block are fully cleaned before and after the test, the abrasion loss of the steel ball before and after the test is weighed by a ten-thousandth electronic balance, the diameter of the abrasion mark of the steel ball is measured by a metallographic microscope, and whether the lubricating oil for the electric bicycle contains iron powder and oil sludge is directly observed by naked eyes.
The test results are shown in the following table:
TABLE 1 abrasion loss analysis chart for four sets of tests
| Grouping | Quality before grinding (g) | Ground mass (g) | Mass abrasion loss (g) | Iron powder or oil sludge content |
| Sample No. 1 | 33.4349 | 33.4322 | 0.0027 | Small amount of |
| Sample No. 2 | 33.4583 | 33.4582 | 0.0001 | Does not contain |
| Sample No. 3 | 33.3667 | 33.3667 | 0.0000 | Does not contain |
| Sample No. 4 | 33.3439 | 33.4381 | -0.0942 | Does not contain |
Note: the sample No. 1 is 20# standard machine oil, and the sample Nos. 2#, 3#, and 4# are lubricating oil for electric bicycles in examples 1, 2, and 3 of the present invention.
It can be seen from Table 1 that sample # 1 had a significant amount of abrasion at 392N, 1450r/min, 30min abrasion test conditions and contained a small amount of sludge. And the abrasion tests of the sample No. 2, the sample No. 3 and the sample No. 4 show a tiny abrasion loss, no abrasion and negative abrasion phenomena, and contain no iron powder and oil sludge. Therefore, the additives of the components in the electric bicycle lubricating oil in the embodiments 1, 2 and 3 of the invention have good functions of wear resistance, friction reduction and self-repair, and can also eliminate iron powder and oil sludge and enhance the lubricating effect.
Claims (10)
1. The electric bicycle lubricating oil is characterized by comprising the following components in percentage by weight:
10-25% of detergent dispersant, 5-15% of antioxidant corrosion inhibitor, 5-15% of extreme pressure antiwear agent, 10-15% of tackifier, 1-3% of ferrite-based magnetofluid and the balance of base oil.
2. The lubricant as set forth in claim 1, wherein: the detergent dispersant is one or more of low-base-number synthetic calcium alkylbenzene sulfonate, high-base-number linear alkylbenzene synthetic calcium sulfonate, long-chain linear alkylbenzene high-base-number synthetic calcium sulfonate, high-base-number synthetic calcium dialkyl benzene sulfonate, long-chain linear alkylbenzene high-base-number synthetic magnesium sulfonate, high-base-number sulfurized calcium alkyl phenate, polyisobutenyl succinimide, boronized polyisobutenyl succinimide, high-molecular-weight polyisobutenyl succinimide and boronized high-molecular-weight polyisobutenyl succinimide.
3. The electric bicycle lubricant oil of claim 1, wherein: the antioxidant corrosion inhibitor is one or the mixture of more than one of zinc butyl alkyl dithiophosphate, zinc bis-octyl dithiophosphate, basic zinc bis-octyl dithiophosphate, zinc secondary alkyl zinc propyl dithiophosphate and zinc primary and secondary alkyl dithiophosphate.
4. The electric bicycle lubricant oil of claim 1, wherein: the extreme pressure antiwear agent is sulfurized olefin, phosphate or nitride.
5. The electric bicycle lubricant oil of claim 1, wherein: the tackifier is one or a mixture of more than one of polyvinyl n-butyl ether, polymethacrylate, polyacrylate, polyisobutylene, atactic polypropylene, ethylene-propylene copolymer and butadiene rubber.
6. The electric bicycle lubricant oil of claim 1, wherein: the ferrite-based magnetofluid is Fe3O4Magnetic powder.
7. The electric bicycle lubricant oil of claim 6, wherein: said Fe3O4The preparation method of the magnetic powder comprises the following steps:
A. preparation of Fe3O4Magnetic powder: mixing a ferrous salt solution and a ferric salt solution according to a ratio of 1: 2-1: 1, quickly adding the ferric salt solution into a NaOH solution precipitator added with excessive oleic acid at the room temperature in an alkaline manner, controlling the pH to be 9-10, stirring and reacting for 8-12 minutes, and then carrying out precipitation separation, washing and drying on the obtained product to obtain the aqueous solution;
B、Fe3O4surface modification of magnetic powder: the Fe prepared in the step A is added3O4And adding the powder into a silane coupling agent solution with the weight percentage of 1-3%, and then performing ultrasonic dispersion, stirring, drying and porphyrizing to obtain the silicon nitride/silicon nitride.
8. The electric bicycle lubricant oil of claim 7, wherein: and D, the precipitation separation method in the step A comprises the steps of putting a sample into a large beaker, adding a large amount of distilled water or ethanol, carrying out ultrasonic dispersion, and then putting the beaker on a magnet to carry out solid-liquid separation.
9. The electric bicycle lubricant oil of claim 7, wherein: the preparation method of the silane coupling agent comprises the steps of dissolving the silane coupling agent in water to prepare a 0.5-2% solution, adding glacial acetic acid, adjusting the pH value to 5.5, and stirring for 5 minutes to obtain the silane coupling agent.
10. The electric bicycle lubricant oil of claim 7, wherein: and B, performing ultrasonic dispersion in the step B for 30 minutes at a stirring temperature of 80 ℃, stirring for 30 minutes at a drying temperature of 100 ℃, and drying for 2 hours.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810912213.XA CN110819421A (en) | 2018-08-10 | 2018-08-10 | Electric bicycle lubricating oil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810912213.XA CN110819421A (en) | 2018-08-10 | 2018-08-10 | Electric bicycle lubricating oil |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110819421A true CN110819421A (en) | 2020-02-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810912213.XA Withdrawn CN110819421A (en) | 2018-08-10 | 2018-08-10 | Electric bicycle lubricating oil |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110819421A (en) |
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2018
- 2018-08-10 CN CN201810912213.XA patent/CN110819421A/en not_active Withdrawn
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