CN111117743A - Wear-resistant and high-temperature-resistant lubricating oil composition - Google Patents
Wear-resistant and high-temperature-resistant lubricating oil composition Download PDFInfo
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- CN111117743A CN111117743A CN201911372666.9A CN201911372666A CN111117743A CN 111117743 A CN111117743 A CN 111117743A CN 201911372666 A CN201911372666 A CN 201911372666A CN 111117743 A CN111117743 A CN 111117743A
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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
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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
- C10M169/044—Mixtures of base-materials and additives the additives being a mixture of non-macromolecular and macromolecular 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
- C10M2201/00—Inorganic compounds or elements as ingredients in lubricant compositions
- C10M2201/04—Elements
- C10M2201/041—Carbon; Graphite; Carbon black
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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
- C10M2201/08—Inorganic acids or salts thereof
- C10M2201/084—Inorganic acids or salts thereof containing sulfur, selenium or tellurium
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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
- C10M2201/10—Compounds containing silicon
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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
- C10M2203/00—Organic non-macromolecular hydrocarbon compounds and hydrocarbon fractions as ingredients in lubricant compositions
- C10M2203/003—Organic non-macromolecular hydrocarbon compounds and hydrocarbon fractions as ingredients in lubricant compositions used as base material
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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
- C10M2203/00—Organic non-macromolecular hydrocarbon compounds and hydrocarbon fractions as ingredients in lubricant compositions
- C10M2203/10—Petroleum or coal fractions, e.g. tars, solvents, bitumen
- C10M2203/1006—Petroleum or coal fractions, e.g. tars, solvents, bitumen used as base material
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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
- C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
- C10M2207/10—Carboxylix acids; Neutral salts thereof
- C10M2207/14—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to carbon atoms of six-membered aromatic rings
- C10M2207/144—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to carbon atoms of six-membered aromatic rings containing 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
- 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
- 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
- C10M2211/00—Organic non-macromolecular compounds containing halogen as ingredients in lubricant compositions
- C10M2211/08—Halogenated waxes
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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
- C10M2215/08—Amides
- C10M2215/082—Amides containing hydroxyl groups; Alkoxylated derivatives
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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
- C10M2217/00—Organic macromolecular compounds containing nitrogen as ingredients in lubricant compositions
- C10M2217/06—Macromolecular compounds obtained by functionalisation op polymers with a nitrogen containing compound
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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
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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
- C10M2221/00—Organic macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions
- C10M2221/04—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
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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
- C10M2223/049—Phosphite
Abstract
The invention belongs to the field of mechanical lubrication, and discloses a wear-resistant and high-temperature-resistant lubricating oil composition which comprises the following components: base oil, carbon nano tubes, graphite powder, trihydroxybenzoic acid, sulfonate, an antioxidant and a surfactant. The invention utilizes the special one-dimensional structure and special carbon atom sp of the carbon nano tube2The electronic hybridization mode integrally improves the wear resistance and high temperature resistance of the lubricating oil composition; the carbon nano tube and the graphite powder in the lubricating oil composition are matched for use, so that the wear resistance and the high temperature resistance of the lubricating oil composition are further improved.
Description
Technical Field
The invention belongs to the field of mechanical lubrication, and particularly relates to a wear-resistant and high-temperature-resistant lubricating oil composition.
Background
The lubricating oil mainly comprises base oil and lubricating additives. The lubricity or wear resistance of lubricating oils is primarily determined by the lubricant additives. The lubricating oil is coated on the mechanical contact friction part, so that the wear resistance of mechanical parts can be improved, and the wear of the mechanical parts is reduced. Because of repeated friction, the mechanical contact part is easy to generate higher temperature, and if the lubricating oil cannot conduct high temperature quickly, the mechanical contact part is easy to deform or damage at high temperature. In the prior art, molybdenum disulfide is added into lubricating oil to improve the wear resistance and high temperature resistance of the lubricating oil, but the high temperature resistance effect is poor, and polysulfide elements are introduced into the lubricating oil, so that the lubricating oil is not beneficial to environmental protection.
Therefore, it is desirable to provide a lubricating oil which is both wear resistant and high temperature resistant, and which has a reduced elemental sulfur content.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art described above. Therefore, the invention provides a wear-resistant and high-temperature-resistant lubricating oil composition, which has high wear resistance and high-temperature resistance, low sulfur content and environmental protection.
A wear-resistant and high-temperature-resistant lubricating oil composition comprises the following components: base oil, carbon nano tubes, graphite powder, trihydroxybenzoic acid, sulfonate, an antioxidant and a surfactant.
Preferably, the wear-resistant and high-temperature-resistant lubricating oil composition comprises the following components in parts by weight:
further preferably, the wear-resistant and high-temperature-resistant lubricating oil composition comprises the following components in parts by weight:
the base oil mainly comprises mineral base oil, synthetic base oil and vegetable oil base oil, and is commonly used base oil in lubricating oil.
Preferably, the base oil is a mineral base oil; further preferably, the mineral base oil is at least one of an alkane (straight chain, branched chain, multi-branched chain), a cycloalkane (monocyclic, bicyclic, polycyclic), an aromatic hydrocarbon (monocyclic aromatic hydrocarbon, polycyclic aromatic hydrocarbon) or a cycloalkylaromatic hydrocarbon.
Preferably, the carbon nanotube is a multi-walled carbon nanotube (a carbon nanotube having more than 3 walls). The multi-walled carbon nano-tube is beneficial to further improving the wear resistance of the lubricating oil composition.
Preferably, the carbon nanotubes are zigzag and/or armchair carbon nanotubes.
Preferably, the diameter of the carbon nano tube is 5-20 nm; the distance between the layers of the multi-walled carbon nanotubes is about 0.34 nm.
Preferably, the size of the graphite powder is 10-40 μm.
Preferably, the sulfonate is selected from sodium sulfonate and/or calcium sulfonate.
Preferably, the antioxidant is at least one of dodecyl selenium, dodecyl phosphite or 3- (3, 5-di-tert-butyl-4-hydroxyphenyl) isooctyl acrylate.
Preferably, the surfactant is a nonionic surfactant.
Preferably, the surfactant is at least one of coconut oil acid glycol amide, polyoxyethylene alkyl alcohol amide, fatty acid polyoxyethylene ester or alkylphenol polyoxyethylene ether.
Preferably, the lubricating oil composition also comprises 0.1-2 parts of polyarylethersulfone ketone, which is beneficial to improving the wear resistance and high temperature resistance of the lubricating oil composition.
Preferably, the lubricating oil composition also comprises 1-2 parts of silicon carbide, which is beneficial to further improving the wear resistance of the lubricating oil composition.
Preferably, the lubricating oil composition also comprises 4-9 parts of chlorinated paraffin, so that the compression resistance of the lubricating oil composition can be improved.
Carbon nano-meterThe tube is made of one-dimensional nano materials, is light in weight, has perfect connection of a hexagonal structure, and has excellent mechanical, electrical and chemical properties. Carbon atoms in carbon nanotubes in sp2Mainly hybridized, and the hexagonal grid structure has certain bending to form a spatial topological structure, wherein certain sp can be formed3The hybrid bond, namely the formed chemical bond has mixed hybrid states of sp2 and sp3, the p orbitals are overlapped with each other to form a large pi bond with high delocalization outside the graphene sheet layer of the carbon nanotube, and the large pi bond on the outer surface of the carbon nanotube is beneficial to improving the intermolecular interaction between the carbon nanotube and the base oil and improving the wear resistance of the lubricating oil composition. The carbon nano tube has a very large length-diameter ratio due to the one-dimensional linear structure, so that the carbon nano tube has good heat transfer performance, and therefore the carbon nano tube has high heat exchange performance along the length direction and high heat conductivity. According to the lubricating oil composition, the carbon nano tubes are added, and the graphite powder is added in an auxiliary manner, so that the lubricating oil composition has good heat conductivity, and the high-temperature resistance of the lubricating oil composition is improved.
A preparation method of a wear-resistant and high-temperature-resistant lubricating oil composition comprises the following steps:
(1) weighing the components according to the formula ratio, and stirring and mixing the carbon nano tube, the graphite powder and the surfactant to prepare a mixture A for later use;
(2) and stirring and mixing the rest components to obtain a mixture B, and stirring and mixing the mixture A and the mixture B to obtain the lubricating oil composition.
Preferably, the mixture A and the mixture B in the step (2) are stirred at the speed of 500-1000 rpm for 1-3 hours.
The use method of the lubricating oil composition provided by the invention is used for coating the lubricating oil composition on the surface of a mechanical part, so that the abrasion or deformation of the mechanical part is obviously reduced.
Preferably, the mechanical parts comprise bearings and/or gears.
Preferably, the lubricating oil composition is applied to the surface of a mechanical part in an amount of 0.05 to 2g/cm2。
Compared with the prior art, the invention has the following beneficial effects:
(1) the invention utilizes the special one-dimensional structure and special carbon atom sp of the carbon nano tube2The electronic hybridization mode integrally improves the wear resistance and the high temperature resistance of the lubricating oil composition.
(2) The carbon nano tube and the graphite powder in the lubricating oil composition are matched for use, so that the wear resistance and the high temperature resistance of the lubricating oil composition are further improved.
Detailed Description
In order to make the technical solutions of the present invention more apparent to those skilled in the art, the following examples are given for illustration. It should be noted that the following examples are not intended to limit the scope of the claimed invention.
The starting materials, reagents or equipment used in the examples are conventionally commercially available or can be obtained by conventionally known methods unless otherwise specified.
The base oils used in the following examples are commercially available common base oils and are not particularly limited.
Example 1
A wear-resistant and high-temperature-resistant lubricating oil composition comprises the following components in parts by weight:
the base oil is mineral base oil (mixture of alkane, cyclane, aromatic hydrocarbon and naphthenic aromatic hydrocarbon);
the antioxidant is 1 part of dodecyl selenium and 1 part of dodecyl phosphite.
A preparation method of a wear-resistant and high-temperature-resistant lubricating oil composition comprises the following steps:
(1) weighing the components according to the formula ratio, and stirring and mixing the single-walled carbon nanotube, the graphite powder and the cocamide to prepare a mixture A for later use;
(2) and stirring and mixing the rest components to obtain a mixture B, and stirring and mixing the mixture A and the mixture B at the speed of 600 revolutions per minute for 3 hours to obtain the lubricating oil composition.
Example 2
A wear-resistant and high-temperature-resistant lubricating oil composition comprises the following components in parts by weight:
the carbon nano tube is an armchair-shaped multi-wall carbon nano tube (containing more than 3 layers of carbon nano tubes with tube walls);
the size of the graphite powder is 30-40 mu m;
the antioxidant is 2 parts of dodecyl selenium, 2 parts of dodecyl phosphite and 1 part of 3- (3, 5-di-tert-butyl-4-hydroxyphenyl) isooctyl acrylate.
The surfactant is 2 parts of coconut oil acid glycol amide, 1 part of polyoxyethylene alkyl alcohol amide and 1 part of fatty acid polyoxyethylene ester.
A preparation method of a wear-resistant and high-temperature-resistant lubricating oil composition comprises the following steps:
(1) weighing the components according to the formula ratio, and stirring and mixing the carbon nano tube, the graphite powder and the surfactant to prepare a mixture A for later use;
(2) and stirring and mixing the rest components to obtain a mixture B, and stirring and mixing the mixture A and the mixture B at the speed of 800 revolutions per minute for 2 hours to obtain the lubricating oil composition.
Example 3
A wear-resistant and high-temperature-resistant lubricating oil composition comprises the following components in parts by weight:
the carbon nanotube is a multi-walled carbon nanotube (carbon nanotube with more than 3 layers of tube walls).
The size of the graphite powder is 10-40 μm.
The sulfonate is 0.5 part of sodium sulfonate and 1 part of calcium sulfonate.
The antioxidant is 2 parts of dodecyl selenium and 3 parts of dodecyl phosphite.
The surfactant is 8 parts of coconut oil acid glycol amide.
A preparation method of a wear-resistant and high-temperature-resistant lubricating oil composition comprises the following steps:
(1) weighing the components according to the formula ratio, and stirring and mixing the carbon nano tube, the graphite powder and the surfactant to prepare a mixture A for later use;
(2) and stirring and mixing the rest components to obtain a mixture B, and stirring and mixing the mixture A and the mixture B at the speed of 1000 revolutions per minute for 1 hour to obtain the lubricating oil composition.
Example 4
A wear-resistant and high-temperature-resistant lubricating oil composition comprises the following components in parts by weight:
the base oil is mineral base oil (mixture of alkane, cyclane, aromatic hydrocarbon and naphthenic aromatic hydrocarbon);
the carbon nano-tube is 2 parts of single-wall carbon nano-tube and 2 parts of multi-wall carbon nano-tube (the carbon nano-tube with more than 3 layers of tube walls).
The size of the graphite powder is 30-40 μm.
The antioxidant is 2 parts of dodecyl selenium and 3 parts of dodecyl phosphite.
The surfactant is 1 part of coconut oil acid glycol amide, 1 part of polyoxyethylene alkyl alcohol amide, 1 part of fatty acid polyoxyethylene ester and 1 part of alkylphenol polyoxyethylene.
A preparation method of a wear-resistant and high-temperature-resistant lubricating oil composition comprises the following steps:
(1) weighing the components according to the formula ratio, and stirring and mixing the carbon nano tube, the graphite powder and the surfactant to prepare a mixture A for later use;
(2) and stirring and mixing the rest components to obtain a mixture B, and stirring and mixing the mixture A and the mixture B at the speed of 900 revolutions per minute for 2 hours to obtain the lubricating oil composition.
Example 5
In example 5, the lubricating oil composition further comprises 1 part of silicon carbide having a particle size of 20 to 30 μm, as compared with example 2, and the rest of the components and the preparation process are the same as those of example 2.
Example 6
In example 6, the lubricating oil composition further contained 4 parts of chloroparaffin, the particle size of silicon carbide was 20 to 30 μm, and the remaining components and preparation process were the same as in example 2, as compared with example 2.
Example 7
Compared with the example 2, the amount of each component is changed in the example 7, the specific substances and the preparation method of each component are the same as the example 2, and the amount of each component in the example 7 is as follows:
example 8
In example 8, the stirring speed of only mixture A and mixture B in step (2) was changed as compared with example 2, and the stirring speed was 200 rpm.
Comparative example 1
In comparison with example 2, comparative example 1 does not add carbon nanotubes, and the remaining components and preparation method are the same as example 2.
Comparative example 2
In comparison with example 2, comparative example 2 does not add graphite powder, and the rest of the components and the preparation method are the same as example 2.
Product effectiveness testing
The lubricating oil compositions prepared in examples 1 to 8 and comparative examples 1 to 2 were tested for load-carrying capacity, anti-wear properties and high-temperature resistance.
The bearing capacity and the wear resistance of the lubricant are evaluated by adopting an MQ-800A type four-ball tester, and the testing temperature is 30 ℃. The maximum non-seizing load Pb value (the Pb value is used for measuring the strength of the oil bearing capacity of the vehicle gear, the larger the Pb value is, the stronger the oil bearing capacity of the vehicle gear is) is measured according to the national standard GB3142, the diameter of the wear scar is measured after the test, and the steel ball material GCr15 bearing steel used has the diameter of 12.7mm and the hardness of 63 HRC. And (3) measuring the wear resistance by using an SRV-IV micro-vibration friction wear testing machine. The closed flash point value of the lubricating oil composition was determined according to GB/T261 "flash point determination of Petroleum products (closed cup method)" (the flash point value is used to measure the high temperature resistance of the lubricating oil composition, the higher the flash point value, the stronger the high temperature resistance). The steel ball, the oil cup and the chuck used before the experiment are ultrasonically cleaned twice by petroleum ether and are dried by a blower for standby application, and the test results are shown in table 1.
Table 1:
as can be seen from Table 1, the lubricating oil compositions obtained in examples 1 to 8 of the present invention had significantly smaller friction coefficients at a wear scar diameter and a load of 500N than those of comparative examples 1 to 2; the flash points of the lubricating oil compositions prepared in examples 1-8 of the present invention are significantly higher than those of comparative examples 1-2, and therefore, the wear resistance and high temperature resistance of the lubricating oil compositions prepared in examples 1-8 of the present invention are significantly better than those of the lubricating oil compositions prepared in comparative examples 1-2. The typical commercial lubricating oil compositions have a flash point of less than 250 deg.C, and the flash points of the lubricating oil compositions prepared in examples 1-8 of the present invention are significantly higher than the flash points of the commercial lubricating oil compositions.
It can also be seen from Table 1 that the lubricating oil compositions prepared in examples 1-8 of the present invention have both wear resistance and high temperature resistance.
Claims (10)
1. A lubricating oil composition characterized by comprising the following components: base oil, carbon nano tubes, graphite powder, trihydroxybenzoic acid, sulfonate, an antioxidant and a surfactant.
2. The lubricating oil composition according to claim 1, characterized by comprising the following components in parts by weight:
3. lubricating oil composition according to claim 1 or 2, characterized in that the carbon nanotubes are multi-walled carbon nanotubes.
4. Lubricating oil composition according to claim 1 or 2, characterized in that the carbon nanotubes are zigzag and/or armchair carbon nanotubes.
5. Lubricating oil composition according to claim 1 or 2, characterized in that the sulphonate is selected from sodium and/or calcium sulphonates.
6. Lubricating oil composition according to claim 1 or 2, characterized in that the surfactant is at least one of coco glycol amide, polyoxyethylene alkylolamide, polyoxyethylene fatty acid ester or polyoxyethylene alkylphenol ether.
7. The lubricating oil composition of claim 1 or 2, further comprising 0.1-2 parts of polyarylethersulfone ketone.
8. A method for preparing the lubricating oil composition of any one of claims 2 to 7, comprising the steps of:
(1) weighing the components according to the formula ratio, and stirring and mixing the carbon nano tube, the graphite powder and the surfactant to prepare a mixture A for later use;
(2) and stirring and mixing the rest components to obtain a mixture B, and stirring and mixing the mixture A and the mixture B to obtain the lubricating oil composition.
9. The method as claimed in claim 8, wherein the step (2) of mixing the mixture A and the mixture B with stirring is carried out at a speed of 500-1000 rpm for 1-3 hours.
10. A method of using the lubricating oil composition of any of claims 1-7, wherein the lubricating oil composition is applied to a surface of a mechanical part.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113789210A (en) * | 2021-09-08 | 2021-12-14 | 唐山威腾润滑油有限公司 | Oil-gas lubricating grease and production method thereof |
| CN115851128A (en) * | 2022-12-07 | 2023-03-28 | 上海船舶工艺研究所(中国船舶集团有限公司第十一研究所) | Normal-temperature quick-drying wear-resistant lubricating coating slurry for bridge crane track |
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| CN115851128A (en) * | 2022-12-07 | 2023-03-28 | 上海船舶工艺研究所(中国船舶集团有限公司第十一研究所) | Normal-temperature quick-drying wear-resistant lubricating coating slurry for bridge crane track |
| CN115851128B (en) * | 2022-12-07 | 2024-01-05 | 上海船舶工艺研究所(中国船舶集团有限公司第十一研究所) | Normal-temperature quick-drying wear-resistant lubricating coating slurry for bridge crane track |
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