CN109022105B - Water-soluble fluorocarbon graphene engine oil and preparation method thereof - Google Patents
Water-soluble fluorocarbon graphene engine oil and preparation method thereof Download PDFInfo
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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
- C10M177/00—Special methods of preparation of lubricating compositions; Chemical modification by after-treatment of components or of the whole of a lubricating composition, not covered by other classes
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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
- C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
- C10M2207/02—Hydroxy compounds
- C10M2207/021—Hydroxy compounds having hydroxy groups bound to acyclic or cycloaliphatic carbon atoms
- C10M2207/022—Hydroxy compounds having hydroxy groups bound to acyclic or cycloaliphatic carbon atoms containing at least two 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
- C10M2207/04—Ethers; Acetals; Ortho-esters; Ortho-carbonates
- C10M2207/042—Epoxides
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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
- C10M2207/04—Ethers; Acetals; Ortho-esters; Ortho-carbonates
- C10M2207/046—Hydroxy ethers
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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
- C10M2211/04—Organic non-macromolecular compounds containing halogen as ingredients in lubricant compositions containing carbon, hydrogen, halogen, and oxygen
- C10M2211/042—Alcohols; Ethers; Aldehydes; Ketones
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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
- C10M2227/00—Organic non-macromolecular compounds containing atoms of elements not provided for in groups C10M2203/00, C10M2207/00, C10M2211/00, C10M2215/00, C10M2219/00 or C10M2223/00 as ingredients in lubricant compositions
- C10M2227/06—Organic compounds derived from inorganic acids or metal salts
- C10M2227/061—Esters derived from boron
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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
- 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
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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
- 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
- C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
- C10N2030/12—Inhibition of corrosion, e.g. anti-rust agents or anti-corrosives
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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
- C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
- C10N2030/30—Anti-misting
Abstract
The invention discloses water-soluble fluorocarbon graphene engine oil and a preparation method thereof. The composition comprises the following components in parts by weight: 0.17-9 parts of fluorocarbon alcohol, 0.023-1.6 parts of graphene, 29.7-62.3 parts of propylene glycol, 29.7-62.3 parts of ethylene glycol, 29.7-62.3 parts of triethylene glycol, 0.97-5.2 parts of boric acid ester, 1EO-9EO parts of ethylene oxide and 0.31-5 parts of phosphate. The water-soluble fluorocarbon graphene engine oil has the advantages of environmental protection, easy water dissolution, easy degradation, good lubricity, small increase of low pour point viscosity, small decrease of high boiling point viscosity, no zinc and metal elements such as copper, cadmium, nickel, cobalt and the like, and has the advantages of changing the environmental pollution of the traditional engine oil, along with environmental protection, energy conservation and environmental protection.
Description
Technical Field
The invention relates to the field of engine oil, in particular to water-soluble fluorocarbon graphene engine oil and a preparation method thereof.
Background
At present, in the production process of engine oil which takes mineral oil as a main raw material, a large amount of waste residues, waste water, waste gas and waste residues are generated, the waste water and the waste gas contain metals such as copper, cadmium, nickel, cobalt and the like, and the engine oil which takes the mineral oil as the main raw material leaks in the use process of mechanical production and processing, automobiles and ships, so that the land resources and the water resources are seriously polluted, and the natural environment is greatly damaged.
Disclosure of Invention
The invention aims to provide the water-soluble fluorocarbon graphene engine oil which is environment-friendly, easy to dissolve in water, easy to degrade, good in lubricity, small in low pour point viscosity increase and high boiling point viscosity decrease, and free of zinc and metal elements such as copper, cadmium, nickel, cobalt and the like. The water-soluble fluorocarbon graphene engine oil has the advantages of changing the pollution environment of the traditional engine oil, along with environmental protection, energy conservation and environmental protection.
In order to achieve the purpose, the invention provides water-soluble fluorocarbon graphene engine oil which is characterized by comprising the following components in parts by weight:
further, the composition comprises the following components in parts by weight:
further, the composition comprises the following components in parts by weight:
further, the preparation method comprises the steps of uniformly mixing fluorocarbon alcohol, propylene glycol, ethylene glycol and triethylene glycol, stirring and heating, heating to 80-170 ℃, slowly adding ethylene oxide with the corresponding mole number, reacting for 120-200 minutes, and cooling to 60-70 ℃; preferably, the temperature is reduced to 65 ℃ after 180 minutes of reaction; and then adding boric acid ester, phosphate and graphene, carrying out esterification reaction, and adjusting the pH value to 6.0-8.0 to obtain the water-soluble fluorocarbon graphene engine oil.
In the components of the invention, the fluorocarbon alcohol, the propylene glycol, the ethylene glycol, the triethylene glycol, the graphene and the fluorocarbon alcohol have extremely strong water resistance, strong steric hindrance and chemical inertness, and play good roles in stability and lubrication in oil products; propylene glycol and ethylene glycol, and the triethylene glycol can well regulate the stability of the viscosity-temperature coefficient of the lubricating oil at the high temperature of 120-150 ℃, and the triethylene glycol can well regulate the stability of the viscosity-temperature coefficient of the lubricating oil at the low temperature of-50 ℃, so that the good starting performance of mechanical power can be ensured; graphene has good wear resistance and heat dissipation properties, and these syntheses change the superior performance not achievable for lubricating oils.
The viscosity of the current synthetic engine oil and semi-synthetic engine oil in the global market is reduced by 85% at the temperature of 120-150 ℃, 85% of lubricity is lost in the state, and all power is difficult to start when the viscosity is increased by 2200% above 3000 at the temperature of-35 ℃. Meanwhile, the surface tension of synthetic engine oil and semi-synthetic engine oil used in the global market is between 25 and 30, and the engine oil is difficult to adhere to metal and only adheres to the metal to lubricate by adjusting the viscosity.
The water-soluble fluorocarbon graphene engine oil has the advantages that the defects of synthetic engine oil and semi-synthetic engine oil used in global markets are well overcome, the viscosity-temperature coefficient stability of the water-soluble fluorocarbon graphene engine oil at the high temperature of 120 ℃ and 150 ℃ is kept at about 50 viscosity, the reduction value is less than 35%, all power is very easy to start when the viscosity is not more than 1000 viscosity and rises by 60% at the temperature of minus 40 ℃, and good lubricity is achieved. Meanwhile, the surface tension of the water-soluble fluorocarbon graphene engine oil is between 35 and 45, the water-soluble fluorocarbon graphene engine oil is easily adhered to metal, strong affinity is adhered to the surface of the metal, the water-soluble fluorocarbon graphene engine oil is not adhered to the metal by adjusting viscosity, and good lubricity is achieved.
The water-soluble fluorocarbon graphene engine oil is environment-friendly water-based mechanical lubricating oil, has very small viscosity change at low and high temperatures, and does not contain volatile organic solvents. The fluorocarbon alcohol has good lubricity and stability, and the graphene has good thermal conductivity and wear resistance, and is mainly used for aerospace, ships, industrial machinery and machining, constant-temperature lubrication of new energy automobiles, lubricating oil of fuel automobiles, constant-temperature cooling, transmission mechanical equipment and the like.
Compared with the conventional oil engine oil technology, the water-soluble fluorocarbon graphene engine oil has the ultra-strong stability of 50-150 ℃. Experiments prove that the water-soluble fluorocarbon graphene engine oil can be used for instantly starting an engine of an automobile at the temperature of 50 ℃ below zero. The viscosity of the water-soluble fluorocarbon graphene engine oil can be ensured to be 50 (mm) at the temperature of-50 DEG C2S); at 150 ℃, the viscosity of the water-soluble fluorocarbon graphene engine oil can be ensured to be 5 (mm)2In s). In the aspect of lubricity, the engine oil taking mineral oil as a main raw material can be adhered to metal for lubrication only depending on viscosity, but the water-soluble fluorocarbon graphene engine oil can be adhered to the surface of the metal for lubrication without depending on viscosity due to hydrophilcity in the molecular structure of the water-soluble fluorocarbon graphene engine oil, so that the water-soluble fluorocarbon graphene engine oil has a good application prospect.
The water-soluble fluorocarbon graphene engine oil disclosed by the invention has the characteristics of friction resistance, acid and alkali resistance, ageing resistance, solvent resistance, salt spray resistance and the like, and has good corrosion resistance and lubricity, the pour point can be as low as-50 ℃, the viscosity-temperature coefficient can be kept 1000 viscosity at-40 ℃, and the viscosity at 120 ℃ can be kept 50 viscosity.
Detailed Description
The following detailed description of embodiments of the invention is intended to be illustrative of the invention and is not to be construed as limiting the invention. The examples do not specify particular techniques or conditions, and are performed according to the techniques or conditions described in the literature in the art or according to the product specifications. The reagents or instruments used are not indicated by the manufacturer, and are all conventional products commercially available.
Example 1: preparation of water-soluble fluorocarbon graphene engine oil
TABLE 1 formulation tables for examples 1-5 (parts by weight)
The preparation method comprises the following steps: uniformly mixing fluorocarbon alcohol, propylene glycol, ethylene glycol and triethylene glycol, stirring and heating, heating to 80 ℃, slowly adding ethylene oxide with a corresponding mole number, reacting for 180 minutes, cooling to 65 ℃, adding boric acid ester, phosphate and graphene, performing esterification reaction to obtain an acid product, and adjusting the pH value to 6.0-8.0 by using ammonia water to obtain the water-soluble fluorocarbon graphene engine oil.
The prepared water-soluble fluorocarbon graphene engine oil has the characteristics of friction resistance of 20000 hours, acid and alkali resistance of PH3-12, aging resistance of 10 years, solvent resistance, salt spray resistance of 1000 hours and the like, and has good corrosion resistance and lubricity, the pour point can be as low as-50 ℃, the viscosity-temperature coefficient can be kept 1000 viscosity at-40 ℃, and the viscosity at 120 ℃ can be kept 50 viscosity. The surface tension of the material is between 35 and 45.
Example 2: preparation of water-soluble fluorocarbon graphene engine oil
The formulation is shown in Table 1, and the preparation method is the same as that of example 1.
The preparation method comprises the following steps: uniformly mixing fluorocarbon alcohol, propylene glycol, ethylene glycol and triethylene glycol, stirring and heating, heating to 170 ℃, slowly adding ethylene oxide with a corresponding mole number, reacting for 120 minutes, cooling to 60 ℃, adding boric acid ester, phosphate and graphene, performing esterification reaction to obtain an acid product, and adjusting the pH value to 6.0-8.0 by using ammonia water to obtain the water-soluble fluorocarbon graphene engine oil.
The prepared water-soluble fluorocarbon graphene engine oil has the characteristics of friction resistance of 20000 hours, acid and alkali resistance of PH3-12, aging resistance of 10 years, solvent resistance, salt spray resistance of 1000 hours and the like, and has good corrosion resistance and lubricity, the pour point can be as low as-50 ℃, the viscosity-temperature coefficient can be kept 1000 viscosity at-40 ℃, and the viscosity at 120 ℃ can be kept 50 viscosity. The surface tension of the material is between 35 and 45.
Example 3: preparation of water-soluble fluorocarbon graphene engine oil
The formulation is shown in Table 1, and the preparation method is the same as that of example 1.
The preparation method comprises the following steps: uniformly mixing fluorocarbon alcohol, propylene glycol, ethylene glycol and triethylene glycol, stirring and heating, heating to 100 ℃, slowly adding ethylene oxide with a corresponding mole number, reacting for 200 minutes, cooling to 70 ℃, adding boric acid ester, phosphate and graphene, performing esterification reaction to obtain an acid product, and adjusting the pH value to 6.0-8.0 by using ammonia water to obtain the water-soluble fluorocarbon graphene engine oil.
The prepared water-soluble fluorocarbon graphene engine oil has the characteristics of friction resistance of 20000 hours, acid and alkali resistance of PH3-12, aging resistance of 10 years, solvent resistance, salt spray resistance of 1000 hours and the like, and has good corrosion resistance and lubricity, the pour point can be as low as-50 ℃, the viscosity-temperature coefficient can be kept 1000 viscosity at-40 ℃, and the viscosity at 120 ℃ can be kept 50 viscosity. The surface tension of the material is between 35 and 45.
Example 4: preparation of water-soluble fluorocarbon graphene engine oil
The formulation is shown in Table 1, and the preparation method is the same as that of example 1.
The preparation method comprises the following steps: uniformly mixing fluorocarbon alcohol, propylene glycol, ethylene glycol and triethylene glycol, stirring and heating, heating to 120 ℃, slowly adding ethylene oxide with a corresponding mole number, reacting for 150 minutes, cooling to 63 ℃, adding boric acid ester, phosphate and graphene, performing esterification reaction to obtain an acid product, and adjusting the pH value to 6.0-8.0 by using ammonia water to obtain the water-soluble fluorocarbon graphene engine oil.
The prepared water-soluble fluorocarbon graphene engine oil has the characteristics of friction resistance of 20000 hours, acid and alkali resistance of PH3-12, aging resistance of 10 years, solvent resistance, salt spray resistance of 1000 hours and the like, and has good corrosion resistance and lubricity, the pour point can be as low as-50 ℃, the viscosity-temperature coefficient can be kept 1000 viscosity at-40 ℃, and the viscosity at 120 ℃ can be kept 50 viscosity. The surface tension of the material is between 35 and 45.
Example 5: preparation of water-soluble fluorocarbon graphene engine oil
The formulation is shown in Table 1, and the preparation method is the same as that of example 1.
The preparation method comprises the following steps: uniformly mixing fluorocarbon alcohol, propylene glycol, ethylene glycol and triethylene glycol, stirring and heating, heating to 150 ℃, slowly adding ethylene oxide with a corresponding mole number, reacting for 180 minutes, cooling to 68 ℃, adding boric acid ester, phosphate and graphene, performing esterification reaction to obtain an acid product, and adjusting the pH value to 6.0-8.0 by using ammonia water to obtain the water-soluble fluorocarbon graphene engine oil.
The prepared water-soluble fluorocarbon graphene engine oil has the characteristics of friction resistance of 20000 hours, acid and alkali resistance of PH3-12, aging resistance of 10 years, solvent resistance, salt spray resistance of 1000 hours and the like, and has good corrosion resistance and lubricity, the pour point can be as low as-50 ℃, the viscosity-temperature coefficient can be kept 1000 viscosity at-40 ℃, and the viscosity at 120 ℃ can be kept 50 viscosity. The surface tension of the material is between 35 and 45.
Example 6: effect test
Experiments prove that the viscosity of the water-soluble fluorocarbon graphene engine oil of the examples 1 to 5 can be ensured to be 50 (mm) when the self-purchased Jili automobile is tested at the temperature of-40 DEG C2S); the oil viscosity of the water-soluble fluorocarbon graphene engine oil of examples 1-5 can be guaranteed to be 5 (mm) at 150 ℃2In s). In the aspect of lubricating property, the traditional engine oil taking mineral oil as a main raw material can only adhere to metal to be lubricated depending on viscosity, but the water-soluble fluorocarbon graphene engine oil disclosed by the invention can adhere to the surface of the metal to be lubricated without depending on viscosity due to the fact that the water-soluble fluorocarbon graphene engine oil disclosed by the invention can be hydrophilic in a molecular structure, so that the water-soluble fluorocarbon graphene engine oil disclosed by the invention has good performanceGood application prospect.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made in the above embodiments by those of ordinary skill in the art without departing from the principle and spirit of the present invention.
Claims (4)
1. The water-soluble fluorocarbon graphene engine oil is characterized by comprising the following components in parts by weight:
the preparation method comprises the steps of uniformly mixing fluorocarbon alcohol, propylene glycol, ethylene glycol and triethylene glycol, stirring and heating, heating to 80-170 ℃, slowly adding ethylene oxide with the corresponding mole number, reacting for 120-200 minutes, and cooling to 60-70 ℃; and then adding boric acid ester, phosphate and graphene, carrying out esterification reaction, and adjusting the pH value to 6.0-8.0 to obtain the water-soluble fluorocarbon graphene engine oil.
2. The water-soluble fluorocarbon graphene engine oil of claim 1, characterized in that the preparation method comprises mixing the fluorocarbon alcohol, the propylene glycol, the ethylene glycol and the triethylene glycol uniformly, stirring and heating, heating to 80-170 ℃, then slowly adding the corresponding mole number of ethylene oxide, reacting for 180 minutes, and cooling to 65 ℃; and then adding boric acid ester, phosphate and graphene, carrying out esterification reaction, and adjusting the pH value to 6.0-8.0 to obtain the water-soluble fluorocarbon graphene engine oil.
3. The water-soluble fluorocarbon graphene engine oil as set forth in claim 1, characterized by comprising the following components in parts by weight:
4. the water-soluble fluorocarbon graphene engine oil as claimed in claim 3, characterized by comprising the following components in parts by weight:
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| CN107109283A (en) * | 2014-08-05 | 2017-08-29 | 索尔维特殊聚合物意大利有限公司 | Use the lubricating method of the PFPE of alkoxylate |
| CN104263484A (en) * | 2014-09-09 | 2015-01-07 | 安徽旺达铜业发展有限公司 | High-cooling-property environment-friendly metal wire drawing solution and preparation method thereof |
| CN105647502A (en) * | 2014-11-10 | 2016-06-08 | 中国石油天然气股份有限公司 | Heavy oil viscosity reducer and preparation method thereof |
| CN104593130A (en) * | 2014-12-29 | 2015-05-06 | 北京航空航天大学 | Method for preparing graphene water-based lubricating agent in situ |
| CN105255555A (en) * | 2015-08-21 | 2016-01-20 | 深圳清华大学研究院 | Wear-resistant eco-environment protective lubricating oil and preparation method thereof |
| WO2017063024A9 (en) * | 2015-10-15 | 2018-06-07 | The Australian National University | Extraction of platelet-like particles from aqueous to non-aqueous media |
| CN107312599A (en) * | 2017-07-06 | 2017-11-03 | 广西柳工机械股份有限公司 | Nano-graphene compounded lubricating oil |
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