CN117431109A - Preparation method of engine nano ceramic engine oil essence - Google Patents
Preparation method of engine nano ceramic engine oil essence Download PDFInfo
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- CN117431109A CN117431109A CN202210447262.7A CN202210447262A CN117431109A CN 117431109 A CN117431109 A CN 117431109A CN 202210447262 A CN202210447262 A CN 202210447262A CN 117431109 A CN117431109 A CN 117431109A
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- 239000000919 ceramic Substances 0.000 title claims abstract description 122
- 239000010705 motor oil Substances 0.000 title claims abstract description 18
- 238000002360 preparation method Methods 0.000 title claims abstract description 11
- 238000002156 mixing Methods 0.000 claims abstract description 27
- 239000002199 base oil Substances 0.000 claims abstract description 22
- 238000012986 modification Methods 0.000 claims abstract description 12
- 230000004048 modification Effects 0.000 claims abstract description 12
- 239000003921 oil Substances 0.000 claims abstract description 5
- 238000003756 stirring Methods 0.000 claims description 48
- 238000010438 heat treatment Methods 0.000 claims description 32
- 239000002243 precursor Substances 0.000 claims description 32
- 239000012535 impurity Substances 0.000 claims description 26
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 24
- 238000000034 method Methods 0.000 claims description 24
- 239000000203 mixture Substances 0.000 claims description 24
- 238000010008 shearing Methods 0.000 claims description 24
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 claims description 20
- 230000001050 lubricating effect Effects 0.000 claims description 20
- 239000007787 solid Substances 0.000 claims description 20
- 239000002245 particle Substances 0.000 claims description 19
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 16
- 238000009835 boiling Methods 0.000 claims description 16
- 238000006243 chemical reaction Methods 0.000 claims description 16
- 239000012153 distilled water Substances 0.000 claims description 16
- 239000002113 nanodiamond Substances 0.000 claims description 16
- VLTRZXGMWDSKGL-UHFFFAOYSA-N perchloric acid Chemical compound OCl(=O)(=O)=O VLTRZXGMWDSKGL-UHFFFAOYSA-N 0.000 claims description 16
- KMUONIBRACKNSN-UHFFFAOYSA-N potassium dichromate Chemical compound [K+].[K+].[O-][Cr](=O)(=O)O[Cr]([O-])(=O)=O KMUONIBRACKNSN-UHFFFAOYSA-N 0.000 claims description 16
- 239000000843 powder Substances 0.000 claims description 16
- 238000005507 spraying Methods 0.000 claims description 16
- 238000005406 washing Methods 0.000 claims description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 16
- 230000007935 neutral effect Effects 0.000 claims description 15
- 238000000227 grinding Methods 0.000 claims description 14
- 229910052751 metal Inorganic materials 0.000 claims description 12
- 239000002184 metal Substances 0.000 claims description 12
- 230000008569 process Effects 0.000 claims description 12
- 239000006185 dispersion Substances 0.000 claims description 10
- 239000000126 substance Substances 0.000 claims description 10
- 101001018064 Homo sapiens Lysosomal-trafficking regulator Proteins 0.000 claims description 8
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 8
- 102100033472 Lysosomal-trafficking regulator Human genes 0.000 claims description 8
- 235000010703 Modiola caroliniana Nutrition 0.000 claims description 8
- 244000038561 Modiola caroliniana Species 0.000 claims description 8
- 229910052581 Si3N4 Inorganic materials 0.000 claims description 8
- HDYRYUINDGQKMC-UHFFFAOYSA-M acetyloxyaluminum;dihydrate Chemical compound O.O.CC(=O)O[Al] HDYRYUINDGQKMC-UHFFFAOYSA-M 0.000 claims description 8
- 229940009827 aluminum acetate Drugs 0.000 claims description 8
- 239000000084 colloidal system Substances 0.000 claims description 8
- 238000001035 drying Methods 0.000 claims description 8
- 239000000428 dust Substances 0.000 claims description 8
- 239000001257 hydrogen Substances 0.000 claims description 8
- 229910052739 hydrogen Inorganic materials 0.000 claims description 8
- 229910052500 inorganic mineral Inorganic materials 0.000 claims description 8
- 239000011707 mineral Substances 0.000 claims description 8
- 239000011812 mixed powder Substances 0.000 claims description 8
- 238000005268 plasma chemical vapour deposition Methods 0.000 claims description 8
- 238000000197 pyrolysis Methods 0.000 claims description 8
- 239000004576 sand Substances 0.000 claims description 8
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 claims description 8
- PHYFQTYBJUILEZ-IUPFWZBJSA-N triolein Chemical compound CCCCCCCC\C=C/CCCCCCCC(=O)OCC(OC(=O)CCCCCCC\C=C/CCCCCCCC)COC(=O)CCCCCCC\C=C/CCCCCCCC PHYFQTYBJUILEZ-IUPFWZBJSA-N 0.000 claims description 8
- 239000007788 liquid Substances 0.000 claims description 3
- 239000002480 mineral oil Substances 0.000 claims description 2
- 235000010446 mineral oil Nutrition 0.000 claims description 2
- 238000010298 pulverizing process Methods 0.000 claims description 2
- 239000000341 volatile oil Substances 0.000 claims 3
- 239000010687 lubricating oil Substances 0.000 abstract description 16
- 238000005299 abrasion Methods 0.000 abstract description 4
- 230000007547 defect Effects 0.000 abstract description 4
- 238000003915 air pollution Methods 0.000 abstract description 3
- 238000003912 environmental pollution Methods 0.000 abstract description 3
- 239000000295 fuel oil Substances 0.000 abstract description 2
- 238000000265 homogenisation Methods 0.000 abstract description 2
- 230000009467 reduction Effects 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 description 8
- 239000000654 additive Substances 0.000 description 6
- 229910002110 ceramic alloy Inorganic materials 0.000 description 6
- 238000005461 lubrication Methods 0.000 description 6
- 238000002474 experimental method Methods 0.000 description 4
- QPJSUIGXIBEQAC-UHFFFAOYSA-N n-(2,4-dichloro-5-propan-2-yloxyphenyl)acetamide Chemical compound CC(C)OC1=CC(NC(C)=O)=C(Cl)C=C1Cl QPJSUIGXIBEQAC-UHFFFAOYSA-N 0.000 description 4
- 230000002035 prolonged effect Effects 0.000 description 4
- 230000000996 additive effect Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000000446 fuel Substances 0.000 description 3
- 239000007789 gas Substances 0.000 description 2
- 229910003480 inorganic solid Inorganic materials 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 238000005118 spray pyrolysis Methods 0.000 description 2
- 230000003139 buffering effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 239000010710 diesel engine oil Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 239000010711 gasoline engine oil Substances 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 230000003137 locomotive effect Effects 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000002086 nanomaterial Substances 0.000 description 1
- 239000011858 nanopowder Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Classifications
-
- 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
- C10M163/00—Lubricating compositions characterised by the additive being a mixture of a compound of unknown or incompletely defined constitution and a non-macromolecular compound, each of these compounds being essential
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B32/00—Carbon; Compounds thereof
- C01B32/25—Diamond
- C01B32/26—Preparation
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B32/00—Carbon; Compounds thereof
- C01B32/25—Diamond
- C01B32/28—After-treatment, e.g. purification, irradiation, separation or recovery
-
- 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
- C10M125/00—Lubricating compositions characterised by the additive being an inorganic material
- C10M125/02—Carbon; Graphite
-
- 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
-
- 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
- C10M169/045—Mixtures of base-materials and additives the additives being a mixture of compounds of unknown or incompletely defined constitution and non-macromolecular compounds
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2201/00—Inorganic compounds or elements as ingredients in lubricant compositions
- C10M2201/04—Elements
- C10M2201/041—Carbon; Graphite; Carbon black
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- 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
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
- C10N2030/06—Oiliness; Film-strength; Anti-wear; Resistance to extreme pressure
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
- C10N2030/72—Extended drain
-
- 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
- C10N2040/25—Internal-combustion engines
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Inorganic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Lubricants (AREA)
Abstract
The invention relates to a preparation method of engine nano ceramic engine oil essence, which can effectively solve the problems of high temperature resistance, extreme pressure resistance, long service life of a used part and reduction of environmental pollution of lubricating oil; the nano ceramic is subjected to surface modification to ensure that the nano ceramic is not agglomerated, and is in a dispersed state, and is mixed with lubricating oil base oil, and homogenization treatment is carried out after mixing. The invention greatly prolongs the service life of the engine, can increase the service life of the engine by 1-4 times, reduces the period of replacing the engine and avoids great investment; the oil consumption is reduced, the emission is reduced, the air pollution is reduced, the emission of the motor vehicle can be effectively reduced by more than 50%, the tail gas emission is reduced by 68%, the fuel oil is saved by 15-35%, the dynamic automatic repairing function of the friction pair of the engine is realized, the mechanical abrasion and the processing defect are reduced, and the engine oil burning condition of the motor vehicle is avoided or slowed down.
Description
Technical Field
The invention belongs to the technical field of engine lubricating oil, and particularly relates to a preparation method of engine nano ceramic engine oil.
Background
The lubricating oil is applied to various vehicles and mechanical equipment, is used for reducing friction among mechanical parts, protecting the mechanical parts from working normally, and mainly plays roles of lubrication, auxiliary cooling, rust prevention, cleaning, sealing, buffering and the like.
At present, most lubricating oil additives are liquid organic derivatives, and have good lubricating performance. However, the organic matters are not resistant to high temperature and extreme pressure, have short service lives and all cause environmental pollution. Nowadays, with the increasing demands on environmental protection, the emission of pollutants requires a "carbon-peak, carbon-neutral" two-carbon target, and how to solve the pollution problem of the motor vehicle lubricating oil is also urgent. The international lubrication industry proposes: inorganic solid additives are used to replace organic derivative lubricating oil additives, such as ceramics, diamond, etc. However, the solid lubricant due to the large particles may precipitate and clog the oil passage. Until the breakthrough of nano powder technology on solid particles, new development on lubricating oil technology is realized.
The nano ceramic alloy lubrication technology originates from the Apollobon month plan in the 50 th century, and the nano ceramic modification technology of the surface of the metal friction pair used in the plan is called nano ceramic alloy lubrication technology. The ceramic alloy lubrication technology is a method for modifying the nano ceramic surface of a metal friction pair by taking lubricating oil as a carrier and utilizing friction pressure and friction heat generated during mechanical operation to enable nano ceramic ions to obtain energy. The ceramic alloy lubrication technology can form a ceramic alloy layer on the surface of a friction pair under the friction pressure and friction heat conditions of the machine tool, and can repair the machine tool when the machine tool has abrasion 'dangling bonds'. The device is mainly used for maintenance and servicing of various mechanical equipment. Research shows that the technology can reduce the friction coefficient of the machine tool to one tenth of that of the traditional lubricating oil due to the existence of the ceramic alloy layer. The reduction of friction can greatly improve the effective power of the engine, and generally can improve the effective output power of the engine by more than 10 percent. The nano ceramic metal friction pair surface has the characteristics of high hardness, high wear resistance, high temperature resistance, corrosion resistance and the like of a ceramic material, and has the characteristics of large specific surface area, high surface energy, small grain size, interface effect of the nano material, so that how to combine the characteristics of metal and ceramic to form a novel composite material with the characteristics of creep resistance, high toughness and high strength is not disclosed and reported so far.
Disclosure of Invention
Aiming at the situation, the invention aims to overcome the defects of the prior art and provide the preparation method of the engine nano ceramic engine oil essence, which can effectively solve the problems of improving the high temperature resistance and extreme pressure resistance of lubricating oil, prolonging the service life of a used part and reducing the environmental pollution.
The technical scheme of the invention is that the preparation method of the engine nano ceramic engine oil essence comprises the following steps:
(1) Preparing nano ceramic by adopting a spray pyrolysis method;
(2) The nano ceramic is subjected to chemical treatment to remove organic matters and impurities in the nano ceramic, so that the purity of the nano ceramic is improved;
(3) The nano ceramic is subjected to surface modification, so that the nano ceramic is not agglomerated and reaches a dispersion state;
(4) Mixing with lubricating base oil;
(5) Homogenizing after mixing.
The invention adopts a spray pyrolysis method to prepare nano ceramic, the nano ceramic is subjected to chemical treatment to remove organic matters and impurities in the nano ceramic, the purity of the nano ceramic is improved, the nano ceramic is subjected to surface modification, the nano ceramic is not agglomerated to reach an ultra-dispersion state, then the nano ceramic is mixed with lubricating oil base oil, and finally the mixed lubricating oil with nano ceramic particles is subjected to homogenization treatment, so that the nano ceramic is uniformly distributed in the lubricating oil base oil to prepare the nano ceramic engine oil essence (namely nano ceramic lubricating oil additive) for an engine.
The problem that inorganic solid additive replaces organic derivative lubricating oil additive is solved. Compared with the prior art, the invention has the following technical advantages:
1. the service life of the engine is greatly prolonged, the service life of the engine can be prolonged by 1-4 times, the period for replacing the engine is reduced, the great investment is avoided, and the use cost is reduced.
2. The fuel consumption is reduced, the emission is reduced, the air pollution is reduced, the emission of the motor vehicle can be effectively reduced by more than 50%, the tail gas emission is reduced by 68%, and the fuel oil is saved by 15-35%.
3. The dynamic automatic repairing function of the friction pair of the engine is realized, the mechanical abrasion and machining defects are reduced, and the safety of the motor vehicle is enhanced.
4. Avoiding or slowing down the engine oil burning condition of the motor vehicle.
Detailed Description
The following describes in detail the embodiments of the present invention with reference to specific cases and examples.
Example 1
The invention discloses a preparation method of engine nano ceramic engine oil essence, which comprises the following steps:
1. the method for preparing the nano ceramic comprises the following steps:
(1) Preparing a precursor solution: high purity aluminum acetate powder and high purity silicon nitride (Si 3 N 4 ) Mixing the powder at a weight ratio of 90:10, adding the mixed powder into a reaction kettle, slowly adding 95% ethanol solution at a weight-to-volume ratio of 50:50 into the reaction kettle, continuously stirring during the adding process, and continuously stirring for 0.5h after all the ethanol solution is added to prepare a precursor solution;
the weight and volume are calculated by kg of solid and L of liquid, and the following is the same;
(2) Atomizing the precursor solution by a high-pressure pump, and spraying the precursor solution into a pyrolysis furnace at a flow rate of 1L/min, wherein the spraying pressure is more than or equal to 8 MPa;
(3) Roasting at 800-1000 ℃ to separate out nano ceramic, and collecting the nano ceramic;
2. and (3) chemical treatment of nano ceramics:
(1) Putting 1kg of nano ceramic into a container, adding 20L of hydrochloric acid with the volume concentration of 35%, stirring uniformly, heating, boiling for 1h, washing with distilled water to be neutral, and removing organic matters and metal impurities;
(2) 7L of perchloric acid (HCLO) with the volume concentration of 70% is added into a container 4 ) And 0.1kg of potassium dichromate (K) 2 Cr 2 O 7 ) Stirring thoroughly, heating, boiling, and continuing heating until the color turns to mauve, and removing other mineral impurities;
(3) Adding 3-4L of hydrofluoric acid (HF) with volume concentration of 30% into a container, heating to 80-85 ℃, stirring for 4 hours to remove sand and dust impurities, washing with distilled water to neutrality, drying and grinding;
3. surface modification of nano ceramic:
treating the purified nano diamond with plasma hydrogen in a microwave plasma CVD device at 800 ℃ for 3 hours to modify the surface of the nano diamond, wherein the nano ceramic is not agglomerated and is in a dispersion state;
4. mixing with a lubricating base oil:
(1) Mixing the surface modified nano ceramic and lubricating base oil according to a weight ratio of 1:1000-9000;
the lubricating base oil is mineral oil or synthetic oil;
(2) Stirring for 4-6h by using a stirrer to fully infiltrate the gas-solid interface on the surface of the nano ceramic particles into a liquid-solid interface to form a mixture;
5. homogenizing:
shearing the mixture at a shearing speed of 15-20 m/s for 1-3h by a high-speed shearing machine, superfine pulverizing larger particles in the mixture for 1-2h by a colloid mill, and then carrying out ultrasonic cavitation for 30-90 min by ultrasonic waves with the frequency of 28-40 kilohertz to obtain the finished nano ceramic olein.
Example 2
The invention discloses a preparation method of engine nano ceramic engine oil essence, which comprises the following steps:
1. the method for preparing the nano ceramic comprises the following steps:
(1) Preparing a precursor solution: high purity aluminum acetate powder and high purity silicon nitride (Si 3 N 4 ) Mixing the powder at a weight ratio of 90:10, adding the mixed powder into a reaction kettle, slowly adding 95% ethanol solution at a weight-to-volume ratio of 50:50 into the reaction kettle, continuously stirring during the adding process, and continuously stirring for 0.5h after all the ethanol solution is added to prepare a precursor solution;
(2) Atomizing the precursor solution by a high-pressure pump, and spraying the precursor solution into a pyrolysis furnace at a flow rate of 1L/min, wherein the spraying pressure is more than or equal to 8 MPa;
(3) Roasting at 900 ℃ to separate out nano ceramic, and collecting the nano ceramic;
2. and (3) chemical treatment of nano ceramics:
(1) Putting 1kg of nano ceramic into a container, adding 20L of hydrochloric acid with the volume concentration of 35%, stirring uniformly, heating, boiling for 1h, washing with distilled water to be neutral, and removing organic matters and metal impurities;
(2) 7L of perchloric acid (HCLO) with the volume concentration of 70% is added into a container 4 ) And 0.1kg of potassium dichromate (K) 2 Cr 2 O 7 ) Stirring thoroughly, heating, boiling, and continuing heating until the color turns to mauve, and removing other mineral impurities;
(3) Adding 3.5L of hydrofluoric acid (HF) with the volume concentration of 30% into a container, heating to 82 ℃, stirring for 4 hours to remove sand and dust impurities, washing to be neutral by distilled water, drying and grinding;
3. surface modification of nano ceramic:
treating the purified nano diamond with plasma hydrogen in a microwave plasma CVD device at 800 ℃ for 3 hours to modify the surface of the nano diamond, wherein the nano ceramic is not agglomerated and is in a dispersion state;
4. mixing with a lubricating base oil:
(1) Mixing the surface modified nano ceramic and lubricating base oil according to a weight ratio of 1:5000;
(2) Stirring for 5h by using a stirrer to fully infiltrate the gas-solid interface on the surface of the nano ceramic particles into a liquid-solid interface to form a mixture;
5. homogenizing:
shearing the mixture at a shearing speed of 18 m/s for 2h by a high-speed shearing machine, superfine grinding larger particles in the mixture for 1.5h by a colloid mill, and carrying out ultrasonic cavitation for 60 min by ultrasonic waves with the frequency of 35 kilohertz to obtain the finished nano ceramic olein.
Example 3
The invention discloses a preparation method of engine nano ceramic engine oil essence, which comprises the following steps:
1. the method for preparing the nano ceramic comprises the following steps:
(1) Preparing a precursor solution: high purity aluminum acetate powder and high purity silicon nitride (Si 3 N 4 ) Mixing the powder at a weight ratio of 90:10, adding the mixed powder into a reaction kettle, slowly adding 95% ethanol solution at a weight-to-volume ratio of 50:50 into the reaction kettle, continuously stirring during the adding process, and continuously stirring for 0.5h after all the ethanol solution is added to prepare a precursor solution;
(2) Atomizing the precursor solution by a high-pressure pump, and spraying the precursor solution into a pyrolysis furnace at a flow rate of 1L/min, wherein the spraying pressure is more than or equal to 8 MPa;
(3) Roasting at 820 ℃ to separate out nano ceramic, and collecting the nano ceramic;
2. and (3) chemical treatment of nano ceramics:
(1) Putting 1kg of nano ceramic into a container, adding 20L of hydrochloric acid with the volume concentration of 35%, stirring uniformly, heating, boiling for 1h, washing with distilled water to be neutral, and removing organic matters and metal impurities;
(2) 7L of perchloric acid (HCLO) with the volume concentration of 70% is added into a container 4 ) And 0.1kg of potassium dichromate (K) 2 Cr 2 O 7 ) Stirring thoroughly, heating, boiling, and continuing heating until the color turns to mauve, and removing other mineral impurities;
(3) Adding 3.8L of hydrofluoric acid (HF) with the volume concentration of 30% into a container, heating to 81 ℃, stirring for 4 hours to remove sand and dust impurities, washing to be neutral by distilled water, drying and grinding;
3. surface modification of nano ceramic:
treating the purified nano diamond with plasma hydrogen in a microwave plasma CVD device at 800 ℃ for 3 hours to modify the surface of the nano diamond, wherein the nano ceramic is not agglomerated and is in a dispersion state;
4. mixing with a lubricating base oil:
(1) Mixing the surface modified nano ceramic and lubricating base oil according to a weight ratio of 1:2000;
(2) Stirring for 4.2h by using a stirrer to fully infiltrate the gas-solid interface on the surface of the nano ceramic particles into a liquid-solid interface to form a mixture;
5. homogenizing:
shearing the mixture at a shearing speed of 16 m/s for 3h by a high-speed shearing machine, superfine grinding larger particles in the mixture for 2h by a colloid mill, and ultrasonic cavitation for 85 min by ultrasonic waves with the frequency of 30 kilohertz to obtain the finished nano ceramic olein.
Example 4
The invention discloses a preparation method of engine nano ceramic engine oil essence, which comprises the following steps:
1. the method for preparing the nano ceramic comprises the following steps:
(1) Preparing a precursor solution: high purity aluminum acetate powder and high purity silicon nitride (Si 3 N 4 ) Mixing the powder at a weight ratio of 90:10, adding the mixed powder into a reaction kettle, slowly adding 95% ethanol solution at a weight-to-volume ratio of 50:50 into the reaction kettle, continuously stirring during the adding process, and continuously stirring for 0.5h after all the ethanol solution is added to prepare a precursor solution;
(2) Atomizing the precursor solution by a high-pressure pump, and spraying the precursor solution into a pyrolysis furnace at a flow rate of 1L/min, wherein the spraying pressure is more than or equal to 8 MPa;
(3) Roasting at 950 ℃ to separate out nano ceramic, and collecting the nano ceramic;
2. and (3) chemical treatment of nano ceramics:
(1) Putting 1kg of nano ceramic into a container, adding 20L of hydrochloric acid with the volume concentration of 35%, stirring uniformly, heating, boiling for 1h, washing with distilled water to be neutral, and removing organic matters and metal impurities;
(2) 7L of perchloric acid (HCLO) with the volume concentration of 70% is added into a container 4 ) And 0.1kg of potassium dichromate (K) 2 Cr 2 O 7 ) Stirring thoroughly, heating, boiling, and continuing heating until the color turns to mauve, and removing other mineral impurities;
(3) Adding 3.2L of hydrofluoric acid (HF) with the volume concentration of 30% into a container, heating to 84 ℃, stirring for 4 hours to remove sand and dust impurities, washing to be neutral by distilled water, drying and grinding;
3. surface modification of nano ceramic:
treating the purified nano diamond with plasma hydrogen in a microwave plasma CVD device at 800 ℃ for 3 hours to modify the surface of the nano diamond, wherein the nano ceramic is not agglomerated and is in a dispersion state;
4. mixing with a lubricating base oil:
(1) Mixing the surface modified nano ceramic and lubricating base oil according to a weight ratio of 1:8000;
(2) Stirring for 6h by using a stirrer to fully infiltrate the gas-solid interface on the surface of the nano ceramic particles into a liquid-solid interface to form a mixture;
5. homogenizing:
shearing the mixture at a shearing speed of 19 m/s for 1h by a high-speed shearing machine, superfine grinding larger particles in the mixture for 1h by a colloid mill, and carrying out ultrasonic cavitation for 35 min by ultrasonic waves with a frequency of 38 kilohertz to obtain the finished nano ceramic olein.
The nano ceramic engine oil for the engine provided by the invention has very good effect through experiments and field application, and taking the example 2 as an example, each experiment is repeated for 3 times, and the experiment shows that the nano ceramic engine oil for the engine has the advantages that the service life of the engine is greatly prolonged, the service life of the engine can be prolonged by 2-4 times, the period for replacing the engine is reduced, the great investment is avoided, and the use cost is reduced. The fuel consumption is reduced, the emission is reduced, the air pollution is reduced, the emission of the motor vehicle can be effectively reduced by more than 50%, the tail gas emission is reduced by 68% on average, and the fuel is saved by 25-35%. The dynamic automatic repairing function of the friction pair of the engine is realized, the mechanical abrasion and machining defects are reduced, and the safety of the motor vehicle is enhanced. Avoiding or slowing down the engine oil burning condition of the motor vehicle.
The same and similar results were obtained for the other examples while the experiment was performed for example 2, and are not shown here.
The nano ceramic engine oil essence for the engine can be added into gasoline engine oil, diesel engine oil and general oil of a gasoline engine and a diesel engine. The engine is widely used for engines of automobiles, ships, power locomotives, aircrafts, tanks and the like, can achieve ideal effects, and has huge economic and social benefits.
Claims (4)
1. The preparation method of the engine nano ceramic engine oil essence is characterized by comprising the following steps of:
1. the method for preparing the nano ceramic comprises the following steps:
(1) Preparing a precursor solution: mixing high-purity aluminum acetate powder and high-purity silicon nitride powder according to a weight ratio of 90:10, adding the mixed powder into a reaction kettle, slowly adding an ethanol solution with a volume concentration of 95% into the reaction kettle according to a weight-to-volume ratio of 50:50, continuously stirring during the adding process, and continuously stirring for 0.5h after all the adding processes are completed, so as to prepare a precursor solution;
the weight and volume are calculated by kg of solid and L of liquid, and the following is the same;
(2) Atomizing the precursor solution by a high-pressure pump, and spraying the precursor solution into a pyrolysis furnace at a flow rate of 1L/min, wherein the spraying pressure is more than or equal to 8 MPa;
(3) Roasting at 800-1000 ℃ to separate out nano ceramic, and collecting the nano ceramic;
2. and (3) chemical treatment of nano ceramics:
(1) Putting 1kg of nano ceramic into a container, adding 20L of hydrochloric acid with the volume concentration of 35%, stirring uniformly, heating, boiling for 1h, washing with distilled water to be neutral, and removing organic matters and metal impurities;
(2) Adding 7L of perchloric acid with the volume concentration of 70% and 0.1kg of potassium dichromate into a container, fully and uniformly stirring, heating, continuously heating after boiling until the color turns into mauve, and removing other mineral impurities;
(3) Adding 3-4L of hydrofluoric acid with volume concentration of 30% into a container, heating to 80-85 ℃, stirring for 4 hours to remove sand and dust impurities, washing with distilled water to be neutral, drying and grinding;
3. surface modification of nano ceramic:
treating the purified nano diamond with plasma hydrogen in a microwave plasma CVD device at 800 ℃ for 3 hours to modify the surface of the nano diamond, wherein the nano ceramic is not agglomerated and is in a dispersion state;
4. mixing with a lubricating base oil:
(1) Mixing the surface modified nano ceramic and lubricating base oil according to a weight ratio of 1:1000-9000;
the lubricating base oil is mineral oil or synthetic oil;
(2) Stirring for 4-6h by using a stirrer to fully infiltrate the gas-solid interface on the surface of the nano ceramic particles into a liquid-solid interface to form a mixture;
5. homogenizing:
shearing the mixture at a shearing speed of 15-20 m/s for 1-3h by a high-speed shearing machine, superfine pulverizing larger particles in the mixture for 1-2h by a colloid mill, and then carrying out ultrasonic cavitation for 30-90 min by ultrasonic waves with the frequency of 28-40 kilohertz to obtain the finished nano ceramic olein.
2. The method for preparing the engine nano ceramic essential oil according to claim 1, which comprises the following steps:
1. the method for preparing the nano ceramic comprises the following steps:
(1) Preparing a precursor solution: mixing high-purity aluminum acetate powder and high-purity silicon nitride powder according to a weight ratio of 90:10, adding the mixed powder into a reaction kettle, slowly adding an ethanol solution with a volume concentration of 95% into the reaction kettle according to a weight-to-volume ratio of 50:50, continuously stirring during the adding process, and continuously stirring for 0.5h after all the adding processes are completed, so as to prepare a precursor solution;
(2) Atomizing the precursor solution by a high-pressure pump, and spraying the precursor solution into a pyrolysis furnace at a flow rate of 1L/min, wherein the spraying pressure is more than or equal to 8 MPa;
(3) Roasting at 900 ℃ to separate out nano ceramic, and collecting the nano ceramic;
2. and (3) chemical treatment of nano ceramics:
(1) Putting 1kg of nano ceramic into a container, adding 20L of hydrochloric acid with the volume concentration of 35%, stirring uniformly, heating, boiling for 1h, washing with distilled water to be neutral, and removing organic matters and metal impurities;
(2) Adding 7L of perchloric acid with the volume concentration of 70% and 0.1kg of potassium dichromate into a container, fully and uniformly stirring, heating, continuously heating after boiling until the color turns into mauve, and removing other mineral impurities;
(3) Adding 3.5L of hydrofluoric acid with volume concentration of 30% into a container, heating to 82 ℃, stirring for 4 hours to remove sand and dust impurities, washing with distilled water to be neutral, drying and grinding;
3. surface modification of nano ceramic:
treating the purified nano diamond with plasma hydrogen in a microwave plasma CVD device at 800 ℃ for 3 hours to modify the surface of the nano diamond, wherein the nano ceramic is not agglomerated and is in a dispersion state;
4. mixing with a lubricating base oil:
(1) Mixing the surface modified nano ceramic and lubricating base oil according to a weight ratio of 1:5000;
(2) Stirring for 5h by using a stirrer to fully infiltrate the gas-solid interface on the surface of the nano ceramic particles into a liquid-solid interface to form a mixture;
5. homogenizing:
shearing the mixture at a shearing speed of 18 m/s for 2h by a high-speed shearing machine, superfine grinding larger particles in the mixture for 1.5h by a colloid mill, and carrying out ultrasonic cavitation for 60 min by ultrasonic waves with the frequency of 35 kilohertz to obtain the finished nano ceramic olein.
3. The method for preparing the engine nano ceramic essential oil according to claim 1, which comprises the following steps:
1. the method for preparing the nano ceramic comprises the following steps:
(1) Preparing a precursor solution: mixing high-purity aluminum acetate powder and high-purity silicon nitride powder according to a weight ratio of 90:10, adding the mixed powder into a reaction kettle, slowly adding an ethanol solution with a volume concentration of 95% into the reaction kettle according to a weight-to-volume ratio of 50:50, continuously stirring during the adding process, and continuously stirring for 0.5h after all the adding processes are completed, so as to prepare a precursor solution;
(2) Atomizing the precursor solution by a high-pressure pump, and spraying the precursor solution into a pyrolysis furnace at a flow rate of 1L/min, wherein the spraying pressure is more than or equal to 8 MPa;
(3) Roasting at 820 ℃ to separate out nano ceramic, and collecting the nano ceramic;
2. and (3) chemical treatment of nano ceramics:
(1) Putting 1kg of nano ceramic into a container, adding 20L of hydrochloric acid with the volume concentration of 35%, stirring uniformly, heating, boiling for 1h, washing with distilled water to be neutral, and removing organic matters and metal impurities;
(2) Adding 7L of perchloric acid with the volume concentration of 70% and 0.1kg of potassium dichromate into a container, fully and uniformly stirring, heating, continuously heating after boiling until the color turns into mauve, and removing other mineral impurities;
(3) Adding 3.8L of hydrofluoric acid with volume concentration of 30% into a container, heating to 81 ℃, stirring for 4 hours to remove sand and dust impurities, washing with distilled water to be neutral, drying and grinding;
3. surface modification of nano ceramic:
treating the purified nano diamond with plasma hydrogen in a microwave plasma CVD device at 800 ℃ for 3 hours to modify the surface of the nano diamond, wherein the nano ceramic is not agglomerated and is in a dispersion state;
4. mixing with a lubricating base oil:
(1) Mixing the surface modified nano ceramic and lubricating base oil according to a weight ratio of 1:2000;
(2) Stirring for 4.2h by using a stirrer to fully infiltrate the gas-solid interface on the surface of the nano ceramic particles into a liquid-solid interface to form a mixture;
5. homogenizing:
shearing the mixture at a shearing speed of 16 m/s for 3h by a high-speed shearing machine, superfine grinding larger particles in the mixture for 2h by a colloid mill, and ultrasonic cavitation for 85 min by ultrasonic waves with the frequency of 30 kilohertz to obtain the finished nano ceramic olein.
4. The method for preparing the engine nano ceramic essential oil according to claim 1, which comprises the following steps:
1. the method for preparing the nano ceramic comprises the following steps:
(1) Preparing a precursor solution: mixing high-purity aluminum acetate powder and high-purity silicon nitride powder according to a weight ratio of 90:10, adding the mixed powder into a reaction kettle, slowly adding an ethanol solution with a volume concentration of 95% into the reaction kettle according to a weight-to-volume ratio of 50:50, continuously stirring during the adding process, and continuously stirring for 0.5h after all the adding processes are completed, so as to prepare a precursor solution;
(2) Atomizing the precursor solution by a high-pressure pump, and spraying the precursor solution into a pyrolysis furnace at a flow rate of 1L/min, wherein the spraying pressure is more than or equal to 8 MPa;
(3) Roasting at 950 ℃ to separate out nano ceramic, and collecting the nano ceramic;
2. and (3) chemical treatment of nano ceramics:
(1) Putting 1kg of nano ceramic into a container, adding 20L of hydrochloric acid with the volume concentration of 35%, stirring uniformly, heating, boiling for 1h, washing with distilled water to be neutral, and removing organic matters and metal impurities;
(2) Adding 7L of perchloric acid with the volume concentration of 70% and 0.1kg of potassium dichromate into a container, fully and uniformly stirring, heating, continuously heating after boiling until the color turns into mauve, and removing other mineral impurities;
(3) Adding 3.2L of hydrofluoric acid with volume concentration of 30% into a container, heating to 84 ℃, stirring for 4 hours to remove sand and dust impurities, washing with distilled water to be neutral, drying and grinding;
3. surface modification of nano ceramic:
treating the purified nano diamond with plasma hydrogen in a microwave plasma CVD device at 800 ℃ for 3 hours to modify the surface of the nano diamond, wherein the nano ceramic is not agglomerated and is in a dispersion state;
4. mixing with a lubricating base oil:
(1) Mixing the surface modified nano ceramic and lubricating base oil according to a weight ratio of 1:8000;
(2) Stirring for 6h by using a stirrer to fully infiltrate the gas-solid interface on the surface of the nano ceramic particles into a liquid-solid interface to form a mixture;
5. homogenizing:
shearing the mixture at a shearing speed of 19 m/s for 1h by a high-speed shearing machine, superfine grinding larger particles in the mixture for 1h by a colloid mill, and carrying out ultrasonic cavitation for 35 min by ultrasonic waves with a frequency of 38 kilohertz to obtain the finished nano ceramic olein.
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1696258A (en) * | 2004-05-14 | 2005-11-16 | 深圳市金刚源新材料发展有限公司 | Technique for preparing lube oil additive of containing Nano diamond |
| CN101029264A (en) * | 2007-04-03 | 2007-09-05 | 张书达 | Modified gear oil |
| CN102616776A (en) * | 2012-04-09 | 2012-08-01 | 江苏金海丰硬质材料科技有限公司 | Purification method of nano diamond ash material |
| CN103031185A (en) * | 2011-10-08 | 2013-04-10 | 张建良 | Anti-burning engine oil and preparation method thereof |
| US20160194575A1 (en) * | 2013-09-04 | 2016-07-07 | Instituto Tecnologico Y De Estudios Superiores De Monterrey | Lubricating oil for automotive and industrial applications, containing decorated graphene |
| CN107500782A (en) * | 2017-09-19 | 2017-12-22 | 迟逞 | A kind of preparation method of increasing material manufacturing modified anti-friction wear-resistant nano-ceramic powder material against corrosion |
-
2022
- 2022-04-27 CN CN202210447262.7A patent/CN117431109A/en not_active Withdrawn
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1696258A (en) * | 2004-05-14 | 2005-11-16 | 深圳市金刚源新材料发展有限公司 | Technique for preparing lube oil additive of containing Nano diamond |
| CN101029264A (en) * | 2007-04-03 | 2007-09-05 | 张书达 | Modified gear oil |
| CN103031185A (en) * | 2011-10-08 | 2013-04-10 | 张建良 | Anti-burning engine oil and preparation method thereof |
| CN102616776A (en) * | 2012-04-09 | 2012-08-01 | 江苏金海丰硬质材料科技有限公司 | Purification method of nano diamond ash material |
| US20160194575A1 (en) * | 2013-09-04 | 2016-07-07 | Instituto Tecnologico Y De Estudios Superiores De Monterrey | Lubricating oil for automotive and industrial applications, containing decorated graphene |
| CN107500782A (en) * | 2017-09-19 | 2017-12-22 | 迟逞 | A kind of preparation method of increasing material manufacturing modified anti-friction wear-resistant nano-ceramic powder material against corrosion |
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