CN114045184B - Carbon-silicon composite nanofluid antifriction and antiwear additive and application thereof - Google Patents
Carbon-silicon composite nanofluid antifriction and antiwear additive and application thereof Download PDFInfo
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- CN114045184B CN114045184B CN202111302950.6A CN202111302950A CN114045184B CN 114045184 B CN114045184 B CN 114045184B CN 202111302950 A CN202111302950 A CN 202111302950A CN 114045184 B CN114045184 B CN 114045184B
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- 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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- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G83/00—Macromolecular compounds not provided for in groups C08G2/00 - C08G81/00
- C08G83/001—Macromolecular compounds containing organic and inorganic sequences, e.g. organic polymers grafted onto silica
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- 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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- 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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- 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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- 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
- C10M2203/102—Aliphatic fractions
- C10M2203/1025—Aliphatic fractions used as base material
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- 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
- C10M2207/283—Esters of polyhydroxy compounds
- C10M2207/2835—Esters of polyhydroxy compounds used as base material
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- 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
- C10M2229/00—Organic macromolecular compounds containing atoms of elements not provided for in groups C10M2205/00, C10M2209/00, C10M2213/00, C10M2217/00, C10M2221/00 or C10M2225/00 as ingredients in lubricant compositions
- C10M2229/04—Siloxanes with specific structure
- C10M2229/041—Siloxanes with specific structure containing aliphatic substituents
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- 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
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2040/00—Specified use or application for which the lubricating composition is intended
- C10N2040/04—Oil-bath; Gear-boxes; Automatic transmissions; Traction drives
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Abstract
The invention provides a carbon-silicon composite nanofluid antifriction and antiwear additive shown in a formula (1) and application thereof, wherein granular carbon nanotubes are converted into carbon-silicon composite nanofluid through hydroxyl modified silicone oil, and compared with the traditional lubricating additive, the nanofluid has two lubricating effects of solid and liquid, is suitable for antifriction and antiwear lubrication under variable working conditions, and simultaneously solves the technical problems that in the prior art, carbon nanoparticles are easy to gather in oil as an antifriction or antiwear additive of a lubricating oil product, and the dispersion stability is poor.
Description
Technical Field
The invention relates to the technical field of lubricating materials, in particular to a carbon-silicon composite nanofluid antifriction antiwear additive and application thereof.
Technical Field
With the continuous development of nanotechnology, important application fields of tribology additives as nanoparticles are valued by researchers, and the special structures of many nanomaterials may show the advantages that a single lubricating grease additive does not have. Researches show that the friction reducing or wear resisting performance of oil products can be effectively improved by adding proper nano particles into lubricating oil. The currently commonly used nano additive particles mainly comprise graphene, molybdenum disulfide, silicon dioxide, aluminum oxide, disulfide, nano metal oxides and the like (CN 201811120591.0, CN201010128448.3, CN202010364803.0, CN201710137738.6, CN201710137349 and CN 202010122050.2), and due to the characteristic of rigidity of the particles, most of dispersion media of the particles are oil phases, so the particles have poor stability and are easy to cause aggregation and sedimentation.
Aiming at the problems of easy deposition and poor dispersion stability of carbon nano-particles as an anti-friction and anti-wear additive in lubricating oil in the prior art. The invention aims to provide a carbon-silicon composite nanofluid antifriction and antiwear additive, compared with the traditional nanoparticle additive, the carbon-silicon composite nanofluid antifriction and antiwear additive is simple in preparation method, can be uniformly dispersed in lubricating oil, and has the beneficial effects of improving the antifriction and antiwear properties of oil products and improving the bearing capacity of the oil products.
Disclosure of Invention
The invention provides a carbon-silicon composite nanofluid antifriction and antiwear additive and application thereof, wherein a granular carbon nano tube is converted into carbon-silicon composite nanofluid through hydroxyl modified silicone oil.
The chemical structure of the carbon-silicon composite nano fluid antifriction agent antiwear additive is shown in the formula (1).
The preparation method of the carbon-silicon composite nanofluid antifriction and antiwear additive comprises the following steps:
adding the carboxylated carbon nanotube (CAS 1333-86-4), hydroxyl modified silicone oil and toluene into a 100mL three-neck flask, magnetically stirring, introducing nitrogen, and carrying out reflux reaction at 120 ℃ for 8-11 h. After the reaction is finished, the toluene is distilled off by reduced pressure distillation, the mixture is naturally cooled to room temperature, and the obtained black fluid is collected, namely the product of the invention.
As a preferred embodiment, the hydroxyl-modified silicone oil used has the following characteristics, structure:
as a preferred embodiment, the mass ratio of the carboxylated carbon nanotubes to the hydroxyl-modified silicone oil is 1.
As a preferred embodiment, the nitrogen gas is highly pure nitrogen (99.999%).
As a preferred embodiment, the reflux time is 9h.
The carbon-silicon composite nanofluid friction-reducing and abrasion-resisting additive is applied to lubricating oil and added in an amount of 0.3-0.7 wt.%.
As a preferred embodiment, the carbon-silicon composite nanofluid friction-reducing and anti-wear additive is added in an amount of 0.7wt.%.
The invention has the beneficial effects that:
the novel nano fluid material provided by the invention is of a carbon-silicon composite nano fluid structure, can be used as an anti-friction and anti-wear additive, can be uniformly dispersed in lubricating oil or automatic transmission oil, and has good anti-friction and anti-wear properties.
Drawings
FIG. 1 is a graph showing the change of friction coefficient with time in test examples 1 to 3
FIG. 2 shows the surface wear scar wear topography of SRV test blocks in test examples 1-3
FIG. 3 is a graph showing the change of friction coefficient with time in test example 4
FIG. 4 shows the surface wear scar wear topography of SRV test block of test example 4
Detailed Description
The invention is further illustrated and described by the following specific examples:
example 1
1g of carboxylated carbon nanotube (CAS 1333-86-4), 6g of hydroxyl modified silicone oil and 25mL of toluene are added into a 100mL three-neck flask, stirred by magnetic force and introduced with nitrogen, and the mixture is refluxed and reacted for 9 hours at 120 ℃. After the reaction is finished, the toluene is distilled off by reduced pressure distillation, the mixture is naturally cooled to room temperature, and black fluid, namely the product of the invention, is obtained by collection.
Friction performance and bearing capacity test:
test example 1: a sample (labeled 500N +0.3wt.% inventive product) was prepared by adding 0.3g of inventive product example 1 to 100g of a base oil having a viscosity grade of 500N and stirring with magnetic stirring at 60 deg.C for 30 min. The antifriction performance of the sample is evaluated by adopting a fretting friction wear testing machine (SRV), the lower the friction coefficient is, the better the antifriction performance is, and the test conditions are as follows: the load is 50N, the amplitude is 1mm, the temperature is 50 ℃, and the time is 1800s; observing the wear surface of the test block after the SRV test by using an optical microscope, and measuring the wear volume of a wear scar on a test disc by using a non-contact three-dimensional surface profiler, wherein the smaller the wear volume is, the better the wear resistance is represented;
test example 2: a sample (labeled 500N +0.5 wt.% inventive product) was prepared by adding 0.5g of inventive example 1 product to 100g of base oil having a viscosity grade of 500N and stirring with magnetic stirring at 60 deg.C for 30 min. The antifriction performance of the sample is evaluated by adopting a fretting friction wear testing machine (SRV), the lower the friction coefficient is, the better the antifriction performance is, and the test conditions are as follows: the load is 50N, the amplitude is 1mm, the temperature is 50 ℃, and the time is 1800s; observing the wear surface of the test block after the SRV test by using an optical microscope, and measuring the wear volume of a wear scar on a test disc by using a non-contact three-dimensional surface profiler, wherein the smaller the wear volume is, the better the wear resistance is represented;
test example 3: a sample (labeled 500N +0.7wt.% inventive product) was prepared by adding 0.7g of inventive example 1 product to 100g of a base oil having a viscosity grade of 500N and stirring with magnetic stirring at 60 ℃ for 30 min. The antifriction performance of the sample is evaluated by adopting a fretting friction wear testing machine (SRV), the lower the friction coefficient is, the better the antifriction performance is, and the test conditions are as follows: the load is 50N, the amplitude is 1mm, the temperature is 50 ℃, and the time is 1800s; observing the wear surface of the test block after the SRV test by using an optical microscope, and measuring the wear volume of a wear scar on a test disc by using a non-contact three-dimensional surface profiler, wherein the smaller the wear volume is, the better the wear resistance is represented;
the test results are shown in table 1, fig. 1 and fig. 2, and the test results show that: the product of the invention has the effect of improving the antifriction performance of the oil product, and the higher the content of the product of the invention is, the better the antifriction performance of the oil product is.
TABLE 1 SRV test block surface wear scar wear morphology and wear volume
The measurement of the wear volume of the wear scar shows that the product of the invention can reduce the wear of the test block, which shows that the product of the invention has the effect of improving the wear resistance of the oil product, and the higher the content of the product of the invention is, the better the wear resistance of the oil product is.
Test example 4: a sample (labeled ATF WS +0.7wt.% inventive product) was prepared by adding 0.7g of inventive example 1 product to 100g of automatic transmission oil (TOYOTA ATF WS) and stirring with magnetic stirring at 60 ℃ for 30 min. The antifriction performance of the sample is evaluated by adopting a fretting friction wear testing machine (SRV), the lower the friction coefficient is, the better the antifriction performance is, and the test conditions are as follows: the load is 50N, the amplitude is 1mm, the temperature is 50 ℃, and the time is 1800s; and observing the wear surface of the test block after the SRV test by using an optical microscope, and measuring the wear volume of the wear scar on the test disc by using a non-contact three-dimensional surface profiler, wherein the smaller the wear volume is, the better the wear resistance is represented.
The test results are shown in table 2, fig. 3 and fig. 4, and the test results show that: the presence of the product of the invention can play a role in improving the antifriction performance of the automatic transmission oil (TOYOTA ATF WS).
TABLE 2 SRV test block surface abrasion trace wear morphology and wear volume
| Sample (I) | ATF WS | ATF WS +0.7wt.% inventive product |
| Wear volume | 138376μm 3 | 74961μm 3 |
And (3) stability test:
the product of example 1 according to the invention was added in an amount of 0.7wt.% to 500N trimethylolpropane oleate (TMTC) and automatic transmission oil (TOYOTA ATF WS), and magnetically stirred at 60 ℃ for 60min to obtain a dispersion having dispersion stability as shown in table 3.
TABLE 3 Dispersion stability of the products of the invention in oils
It can be seen from table 3 that the addition of the inventive product in the range of 0.7wt.% provides good dispersion stability in 500n, tmtc and TOYOTA ATF WS.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (8)
1. A carbon-silicon composite nanofluid additive, which is characterized in that the chemical structure schematic diagram of the additive is shown as a formula (1):
the preparation method of the carbon-silicon composite nanofluid additive comprises the following steps: adding the carboxylated carbon nano tube, the hydroxyl modified silicone oil and the toluene into a three-neck flask, magnetically stirring, introducing nitrogen, performing reflux reaction at 120 ℃ for 8-11 h, evaporating the toluene by reduced pressure distillation after the reaction is finished, naturally cooling to room temperature, and collecting to obtain the carbon-silicon composite nano fluid additive.
2. The carbon-silicon composite nanofluid additive according to claim 1, wherein the hydroxyl-modified silicone oil used has the following characteristics in structure:
3. the carbon-silicon composite nanofluid additive according to claim 1, wherein the mass ratio of the carboxylated carbon nanotubes to the hydroxyl-modified silicone oil is 1.
4. The carbon-silicon composite nanofluid additive according to claim 1, wherein the nitrogen gas is high purity nitrogen having a purity of 99.999%.
5. The carbon-silicon composite nanofluid additive according to claim 1, wherein the reflow time is 9 hours.
6. The use of the carbon-silicon composite nanofluid additive according to claim 1, wherein the carbon-silicon composite nanofluid is used as an anti-friction and anti-wear additive in the field of lubricating oil.
7. The use of the carbon-silicon composite nanofluid additive according to claim 6, wherein the amount added is 0.3wt.% to 0.7wt.%.
8. The use of the carbon-silicon composite nanofluid additive according to claim 6, wherein the amount added is 0.7wt.%.
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