阅读说明：本技术 一种微爆破分散石墨烯制备石墨烯基润滑油的方法 (Method for preparing graphene-based lubricating oil by micro-blasting dispersed graphene ) 是由 曾军堂 陈庆 张俊 陈涛 司文彬 于 2020-05-22 设计创作，主要内容包括：本发明涉及改性润滑油技术领域,特别是涉及一种微爆破分散石墨烯制备石墨烯基润滑油的方法,包括：将石墨烯、混合溶剂、分散剂、发泡剂均匀分散,再加入纳米碳化硅进行超声分散,冷冻干燥,再加入基础润滑油进行搅拌分散,加热研磨后加入抗氧化剂搅拌均匀,脱泡处理,即得石墨烯基润滑油。本发明解决现有技术中石墨烯在润滑油中是很难达到理想的润滑效果的问题,通过上述制备方法制备得到的石墨烯基润滑油具有耐摩擦系数小、导热系数高、稳定性高、相容性好的优点,摩擦系数小从而对机械部件具有很好的保护作用,导热系数高可将摩擦过程中产生的热量及时移走从而延长机械部件的使用寿命。(The invention relates to the technical field of modified lubricating oil, in particular to a method for preparing graphene-based lubricating oil by micro-blasting dispersed graphene, which comprises the following steps: uniformly dispersing graphene, a mixed solvent, a dispersing agent and a foaming agent, adding nano silicon carbide for ultrasonic dispersion, freeze-drying, adding basic lubricating oil for stirring dispersion, heating and grinding, adding an antioxidant, uniformly stirring, and defoaming to obtain the graphene-based lubricating oil. The graphene-based lubricating oil prepared by the preparation method has the advantages of small friction resistance coefficient, high heat conductivity coefficient, high stability and good compatibility, so that the graphene-based lubricating oil has a good protection effect on mechanical parts, and the heat conductivity coefficient is high, so that heat generated in the friction process can be removed in time, and the service life of the mechanical parts is prolonged.)

1. A method for preparing graphene-based lubricating oil by micro-blasting dispersed graphene is characterized by comprising the following steps:

step one, mixing the following materials in a mass ratio of (3-15): (50-200): (2-8): (3-15) uniformly dispersing the graphene, the mixed solvent, the dispersing agent and the foaming agent to obtain slurry for later use;

step two, mixing the following materials in a mass ratio of (70-120): (5-50) ultrasonically dispersing the slurry obtained in the step one and the nano silicon carbide, and freeze-drying to obtain dry powder for later use;

step three, mixing the following materials in a mass ratio of (1-5): (80-150) stirring and dispersing the dry powder and the basic lubricating oil in the second step, heating and grinding, adding an antioxidant, uniformly stirring, and defoaming to obtain the graphene-based lubricating oil.

2. The method for preparing the graphene-based lubricating oil from the micro-blasting dispersed graphene according to claim 1, wherein the method comprises the following steps:

in the first step, the mass ratio of graphene to the mixed solvent to the dispersing agent to the foaming agent is (5-10): (70-140): (3-5): (5-10);

and the mass ratio of the slurry to the nano silicon carbide in the second step is (80-100): (10-30);

in the third step, the mass ratio of the dry powder to the basic lubricating oil is (2-3): (100-120).

3. The method for preparing the graphene-based lubricating oil from the micro-blasting dispersed graphene according to claim 2, wherein the method comprises the following steps:

in the first step, the mass ratio of the graphene to the mixed solvent to the dispersing agent to the foaming agent is 8: 100: 4: 6;

and in the second step, the mass ratio of the slurry to the nano silicon carbide is 100: 20;

the mass ratio of the dry powder to the basic lubricating oil in the third step is 3: 110.

4. the method for preparing the graphene-based lubricating oil from the micro-blasting dispersed graphene according to claim 1, wherein the method comprises the following steps:

in the first step, the mixed solvent is ethanol and deionized water according to a mass ratio of (30-60): (40-80) mixing;

the foaming agent in the first step is at least one of ammonium carbonate and ammonium bicarbonate;

and in the first step, the dispersant is polyisobutylene succinimide.

5. The method for preparing the graphene-based lubricating oil from the micro-blasting dispersed graphene according to claim 1, wherein the method comprises the following steps: the temperature of the dispersion in the first step is 20-40 ℃, the rotating speed is 120-200 rpm, and the dispersion time is 30-60 min.

6. The method for preparing the graphene-based lubricating oil from the micro-blasting dispersed graphene according to claim 1, wherein the method comprises the following steps:

the ultrasonic frequency of ultrasonic dispersion in the second step is 15 KHz-25 KHz, the ultrasonic temperature is 20 ℃ to 40 ℃, and the ultrasonic time is 15 min-45 min;

and in the second step, the temperature of freeze drying is-40 ℃ to-60 ℃, the absolute pressure is 10Pa to 20Pa, and the drying time is 3h to 5 h.

7. The method for preparing the graphene-based lubricating oil from the micro-blasting dispersed graphene according to claim 1, wherein the method comprises the following steps: the base lubricating oil in the third step is 500N base oil; the antioxidant in the third step is 2, 6-di-tert-butyl-p-cresol.

8. The method for preparing the graphene-based lubricating oil from the micro-blasting dispersed graphene according to claim 7, wherein the method comprises the following steps: the mass ratio of the 500N base oil to the 2, 6-di-tert-butyl-p-cresol is (900-1100): (5-10).

9. The method for preparing the graphene-based lubricating oil from the micro-blasting dispersed graphene according to any one of claims 1 to 3, wherein the method comprises the following steps:

stirring speed for stirring and dispersing in the third step is 300-500 rpm, temperature is 20-40 ℃, and time is 15-45 min;

the temperature of the heating and grinding in the third step is 60-90 ℃, the absolute pressure is 0.03-0.05 MPa, and the speed is 10-30 m/min;

the defoaming treatment in the third step specifically comprises the following steps: and (3) defoaming in a centrifugal stirring defoaming machine with the rotating speed of 2000 rmp-2500 rmp for 3-8 min.

Technical Field

The invention relates to the technical field of modified lubricating oil and a preparation method thereof, in particular to a method for preparing graphene-based lubricating oil by micro-blasting dispersed graphene.

Background

The lubricating grease is a lubricating oil which is separated from petroleum and synthesized by hydrogenation, sulfonation, solvent extraction separation method and the like, is mainly used for reducing friction between surfaces of moving parts, and has cooling and sealing functions on machinery and equipment. With the development demand of high-performance equipment, the requirements on precision lubrication such as industrial machinery lubrication, transmission lubrication and the like are higher and higher. When the lubricating grease is used, the working temperature is generally below 200 ℃, polar substances in the lubricating grease are decomposed on the metal surface of a friction part under the action of tribochemical action under high temperature and high load and undergo tribochemical reaction with surface metal to form a soft extreme pressure film with a low melting point and a firm physicochemical adsorption film, so that the lubricating grease has the functions of resisting high load and resisting frictional wear. However, the requirements for high-load and high-speed operation are higher and higher, because the lubricating oil is influenced by temperature, pressure and the like when the friction surface moves, a stable film surface is difficult to form on the friction surface, the friction surface becomes rough under the influence of high bearing capacity, the friction coefficient is increased, the lubricating grease is seriously lost, and 30% of transmission power is lost in the mechanical tradition with poor lubrication, so that the traditional lubricating grease is extremely easy to degrade and lose efficacy in the high-temperature and high-load friction process, and the application limitations of the traditional lubricating grease in the aspects of high bearing capacity, environment friendliness and the like gradually appear.

In order to meet the requirements of high-load anti-wear and anti-friction of lubricating grease, an additive method is generally adopted to improve the lubricating property and the anti-wear property of the lubricating grease. The original used additives are sulfur, phosphorus and chlorine elements, but the pollution is easy to cause, and the effects of anti-wear extreme pressure and anti-friction performance are not ideal. The appearance of the nano material provides a new choice for the development of the lubricating oil additive and attracts people's extensive attention. Two-dimensional layered materials, such as graphene and molybdenum disulfide, are easy to slip under the shearing action and have low friction coefficient, and can form a transfer film on the surface of a friction pair as a lubricating oil additive, so that the abrasion is effectively reduced; the one-dimensional spherical particles, such as diamond, alumina and silicon oxide, can be used as lubricating oil additives to effectively change sliding friction into rolling friction, play the role of a micro bearing and effectively reduce the friction coefficient. Although molybdenum disulfide and graphite are mature to be applied to lubricating oil, the particles are large, so that the lubricating oil is obviously insufficient in the aspect of high-load precision lubrication.

Graphene (Graphene) is a polymer made of carbon atoms in sp²The hybrid tracks form a hexagonal honeycomb lattice two-dimensional carbon nanomaterial. The graphene has excellent optical, electrical and mechanical properties, and has important application prospects in the aspects of materials science, micro-nano processing, energy, biomedicine, drug delivery and the like. The arrangement mode of carbon atoms in the graphene is sp like that of a graphite monoatomic layer²The carbon atom has 4 valence electrons, wherein 3 electrons generate sp bonds, namely each carbon atom contributes one unbound electron on the pz orbit, pz orbitals of adjacent atoms form pi bonds in a direction perpendicular to the plane, and the newly formed pi bonds are in a half-filled state.

Graphene is a nanoscale microchip, due to weak van der waals force between layers, the sheets are easy to slip under the shearing action, the graphene has a low friction coefficient, can be used as an excellent antifriction and wear-resistant material, and can completely meet the requirement of precision lubrication due to the nanoscale, and the nanoscale has a repair function on wear generated by lubrication, so that the graphene is superior to the traditional layered solid lubricating materials such as graphite, molybdenum disulfide and the like in performance. It is obviously difficult to disperse nano-sized graphene in lubricating oil. Conventional graphene below 10 layers is seriously agglomerated, is generally dispersed in a liquid phase manner, and is subjected to coagulation phenomenon; if dispersed in solid form, graphene generally converges to a flocculent form, which is extremely difficult to disperse. If the dispersion does not meet the requirement, the graphene is difficult to achieve the ideal lubricating effect in the lubricating oil.

Disclosure of Invention

In view of the above drawbacks of the prior art, an object of the present invention is to provide a method for preparing a graphene-based lubricating oil by micro-blasting and dispersing graphene, so as to solve the problem that graphene is difficult to achieve an ideal lubricating effect in a lubricating oil in the prior art, and to provide a graphene-based lubricating oil. According to the invention, nano silicon carbide and graphene are used as additives of lubricating oil, the graphene is in a single-atom lamellar structure and is easy to adhere to the surface of nano silicon carbide with larger particles, the nano silicon carbide supports the graphene with smaller particle size and is pre-dispersed in the basic lubricating oil, so that the graphene is effectively prevented from massively agglomerating, then the foaming agent in the graphene system is heated through grinding and heating, so that severe gas expansion is generated, the graphene deposited on the surface of the nano silicon carbide is exploded and dispersed, and the graphene is well dispersed in the basic lubricating oil. The graphene-based lubricating oil prepared by the preparation method has the advantages of small friction resistance coefficient, high heat conductivity coefficient, high stability and good compatibility, the friction coefficient is small, so that a mechanical part is well protected, and the heat generated in the friction process can be timely removed due to the high heat conductivity coefficient, so that the service life of the mechanical part is prolonged.

In order to attain the above and other related objects,

the invention provides a method for preparing graphene-based lubricating oil by micro-blasting dispersed graphene, which comprises the following steps:

step one, mixing the following materials in a mass ratio of (3-15): (50-200): (2-8): (3-15) uniformly dispersing the graphene, the mixed solvent, the dispersing agent and the foaming agent to obtain slurry for later use;

step two, mixing the following materials in a mass ratio of (70-120): (5-50) ultrasonically dispersing the slurry obtained in the step one and the nano silicon carbide, and freeze-drying to obtain dry powder for later use;

step three, mixing the following materials in a mass ratio of (1-5): (80-150) stirring and dispersing the dry powder and the basic lubricating oil in the second step, heating and grinding, adding an antioxidant, uniformly stirring, and defoaming to obtain the graphene-based lubricating oil.

The graphene, the mixed solvent, the dispersing agent and the foaming agent are uniformly mixed in advance to form slurry, the graphene is dispersed in the mixed solvent in advance, the graphene can be prevented from being agglomerated in advance, and in addition, the dispersing agent is added to promote the graphene to be dispersed in the mixed solvent. And then the graphene can be deposited on the surface of the nano silicon carbide through ultrasonic dispersion of the slurry and the nano silicon carbide, and the ultrasonic dispersion has the advantages of uniform dispersion and high efficiency. The mixed solvent is removed by freeze drying (recyclable), in which case the properties of the blowing agent are not affected. And mixing the dry powder with the basic lubricating oil, wherein the graphene is deposited on the surface of the nano silicon carbide, so that the graphene cannot be agglomerated in the basic lubricating oil. The heating grinding is used for preventing agglomeration, and grinding and dispersing possibly agglomerated particles; the heating is to foam the foaming agent, and the graphene is dispersed more uniformly in the foaming process; the heating and grinding are processed together, the graphene is dispersed more uniformly, a synergistic effect is achieved, and the processing time can be shortened compared with the case that the graphene is separated from the graphene, so that the preparation efficiency is improved. Finally, defoaming to obtain the finished product. The whole preparation process is relatively simple in process, has low requirements on temperature and pressure, and can be suitable for large-scale production.

Graphene is a nanoscale microchip, due to weak van der waals force between layers, the sheets are easy to slip under the shearing action, the graphene has a low friction coefficient, can be used as an excellent antifriction and wear-resistant material, and can completely meet the requirement of precision lubrication due to the nanoscale, and the nanoscale has a repair function on wear generated by lubrication, so that the graphene is superior to the traditional layered solid lubricating materials such as graphite, molybdenum disulfide and the like in performance. Graphene is one of the materials with the highest known strength, has good toughness and can be bent, the theoretical Young modulus of the graphene reaches 1.0TPa, and the inherent tensile strength is 130 GPa.

The silicon carbide has stable chemical property, high heat conductivity coefficient, small thermal expansion coefficient and good wear resistance.

The silicon carbide and the graphene have a synergistic lubricating effect, a better ball effect is formed, the friction coefficient between friction pairs (the friction pairs are the most important elements for end face sealing) and the abrasion loss of materials can be reduced, and the heat conductivity coefficient and the heat conductivity of the base oil can be obviously improved. The graphene is deposited on the surface of the nano silicon carbide, so that the dispersion performance of the graphene in the basic lubricating oil can be obviously improved, and the thermal conductivity of the graphene-based lubricating oil can be improved due to the fact that the nano silicon carbide has high thermal conductivity. The graphene-based lubricating oil prepared by the preparation method has the advantages of small friction resistance coefficient, high heat conductivity coefficient, high stability and good compatibility, the friction coefficient is small, so that a mechanical part is well protected, and the heat generated in the friction process can be timely removed due to the high heat conductivity coefficient, so that the service life of the mechanical part is prolonged.

As a preferable scheme of the invention: in the first step, the mass ratio of graphene to the mixed solvent to the dispersing agent to the foaming agent is (5-10): (70-140): (3-5): (5-10);

and the mass ratio of the slurry to the nano silicon carbide in the second step is (80-100): (10-30);

in the third step, the mass ratio of the dry powder to the basic lubricating oil is (2-3): (100-120).

According to the graphene-based lubricating oil, the nano silicon carbide and the graphene are used as additives of the lubricating oil, the graphene is in a single-atom lamellar structure and is easy to adhere to the surface of the nano silicon carbide with large particles, the nano silicon carbide bears the graphene with smaller particle size and is pre-dispersed in the basic lubricating oil, so that the graphene is effectively prevented from being agglomerated in a large amount, the foaming agent in a graphene system is heated through grinding and heating, severe gas expansion is generated, the graphene deposited on the surface of the nano silicon carbide is exploded and dispersed, and the graphene is well dispersed in the basic lubricating oil. The silicon carbide and the graphene have a synergistic lubricating effect, a better ball effect is formed, the friction coefficient between friction pairs (the friction pairs are the most important elements for end face sealing) and the abrasion loss of materials can be reduced, and the heat conductivity coefficient and the heat conductivity of the base oil can be obviously improved. The graphene is deposited on the surface of the nano silicon carbide, so that the dispersion performance of the graphene in the basic lubricating oil can be obviously improved, and the thermal conductivity of the graphene-based lubricating oil can be improved due to the fact that the nano silicon carbide has high thermal conductivity. The compatibility among all components can be improved by depositing the graphene on the surface of the nano silicon carbide and adding the dispersing agent, so that the graphene-based lubricating oil can be used as graphene-based lubricating oil to remarkably improve the lubricating state of a friction pair, reduce the friction coefficient among friction materials and the abrasion loss of materials and prolong the service life of a machine.

As a preferable scheme of the invention: in the first step, the mass ratio of the graphene to the mixed solvent to the dispersing agent to the foaming agent is 8: 100: 4: 6;

and in the second step, the mass ratio of the slurry to the nano silicon carbide is 100: 20;

the mass ratio of the dry powder to the basic lubricating oil in the third step is 3: 110.

as a preferable scheme of the invention: in the first step, the mixed solvent is ethanol and deionized water according to a mass ratio of (30-60): (40-80) mixing;

the foaming agent in the first step is at least one of ammonium carbonate and ammonium bicarbonate;

and in the first step, the dispersant is polyisobutylene succinimide.

The graphene falls off from the surface of the nano silicon carbide by heating, foaming and dispersing, and is dispersed in the basic lubricating oil by micro blasting, so that the graphene is dispersed more uniformly in the foaming process. The decomposition temperature of ammonium carbonate and ammonium bicarbonate is low, the requirement on equipment is low, and the performance of the graphene-based lubricating oil cannot be influenced after decomposition.

The polyisobutylene succinimide can not only disperse graphene, but also has better dispersibility and excellent high-temperature stability when being used for lubricating oil. The polyisobutenyl succinimide (T154A) is an ashless dispersant prepared by a thermal addition process by using high-activity polyisobutylene (= 1000) as a raw material, has good cleaning dispersibility, can inhibit the generation of carbon deposit and paint film on an engine piston, and does not contain chlorine.

As a preferable scheme of the invention: the temperature of the dispersion in the first step is 20-40 ℃, the rotating speed is 120-200 rpm, and the dispersion time is 30-60 min.

The graphene, the mixed solvent, the dispersing agent and the foaming agent are uniformly mixed in advance to form slurry, the graphene is dispersed in the mixed solvent in advance, the graphene can be prevented from being agglomerated in advance, and in addition, the dispersing agent is added to promote the graphene to be dispersed in the mixed solvent.

As a preferable scheme of the invention: the ultrasonic frequency of ultrasonic dispersion in the second step is 15 KHz-25 KHz, the ultrasonic temperature is 20 ℃ to 40 ℃, and the ultrasonic time is 15 min-45 min;

and in the second step, the temperature of freeze drying is-40 ℃ to-60 ℃, the absolute pressure is 10Pa to 20Pa, and the drying time is 3h to 5 h.

The slurry and the nano silicon carbide are subjected to ultrasonic dispersion, graphene can be deposited on the surface of the nano silicon carbide, and the ultrasonic dispersion has the advantages of uniform dispersion and high efficiency. The mixed solvent is removed by freeze drying (recyclable), in which case the properties of the blowing agent are not affected.

As a preferable scheme of the invention: the base lubricating oil in the third step is 500N base oil; the antioxidant in the third step is 2, 6-di-tert-butyl-p-cresol.

The selected 500N base oil is suitable for producing medium and high grade lubricating oil, and 2, 6-di-tert-butyl-p-cresol is an oil soluble antioxidant widely used at home and abroad, has strong oxidation resistance, good heat resistance and stability, no peculiar smell, no color reaction when meeting metal ions and the like, and has low price.

As a preferable scheme of the invention: the mass ratio of the 500N base oil to the 2, 6-di-tert-butyl-p-cresol is (900-1100): (5-10).

As a preferable scheme of the invention: stirring speed for stirring and dispersing in the third step is 300-500 rpm, temperature is 20-40 ℃, and time is 15-45 min;

the temperature of the heating and grinding in the third step is 60-90 ℃, the absolute pressure is 0.03-0.05 MPa, and the speed is 10-30 m/min;

the defoaming treatment in the third step specifically comprises the following steps: and (3) defoaming in a centrifugal stirring defoaming machine with the rotating speed of 2000 rmp-2500 rmp for 3-8 min.

The heating grinding is used for preventing agglomeration, and grinding and dispersing possibly agglomerated particles; the heating is to foam the foaming agent, and the graphene is dispersed more uniformly in the foaming process; the heating and grinding are processed together, the graphene is dispersed more uniformly, a synergistic effect is achieved, and the processing time can be shortened compared with the case that the graphene is separated from the graphene, so that the preparation efficiency is improved. Finally, defoaming to obtain the finished product.

According to the graphene-based lubricating oil, the nano silicon carbide and the graphene are used as additives of the lubricating oil, the graphene is in a single-atom lamellar structure and is easy to adhere to the surface of the nano silicon carbide with large particles, the nano silicon carbide bears the graphene with smaller particle size and is pre-dispersed in the basic lubricating oil, so that the graphene is effectively prevented from being agglomerated in a large amount, the foaming agent in a graphene system is heated through grinding and heating, severe gas expansion is generated, the graphene deposited on the surface of the nano silicon carbide is exploded and dispersed, and the graphene is well dispersed in the basic lubricating oil. The silicon carbide and the graphene have a synergistic lubricating effect, a better ball effect is formed, the friction coefficient between friction pairs (the friction pairs are the most important elements for end face sealing) and the abrasion loss of materials can be reduced, and the heat conductivity coefficient and the heat conductivity of the base oil can be obviously improved. The graphene is deposited on the surface of the nano silicon carbide, so that the dispersion performance of the graphene in the basic lubricating oil can be obviously improved, and the thermal conductivity of the graphene-based lubricating oil can be improved due to the fact that the nano silicon carbide has high thermal conductivity. The compatibility among all components can be improved by depositing the graphene on the surface of the nano silicon carbide and adding the dispersing agent, so that the graphene-based lubricating oil can be used as graphene-based lubricating oil to remarkably improve the lubricating state of a friction pair, reduce the friction coefficient among friction materials and the abrasion loss of materials and prolong the service life of a machine. The graphene-based lubricating oil prepared by the preparation method has the advantages of small friction resistance coefficient, high heat conductivity coefficient, high stability and good compatibility, the friction coefficient is small, so that a mechanical part is well protected, and the heat generated in the friction process can be timely removed due to the high heat conductivity coefficient, so that the service life of the mechanical part is prolonged.

As described above, the method for preparing graphene-based lubricating oil by micro-blasting dispersed graphene and the graphene-based lubricating oil provided by the invention have the following beneficial effects:

1. the graphene, the mixed solvent, the dispersing agent and the foaming agent are uniformly mixed in advance to form slurry, the graphene is dispersed in the mixed solvent in advance, the graphene can be prevented from being agglomerated in advance, and in addition, the dispersing agent is added to promote the graphene to be dispersed in the mixed solvent. And then the graphene can be deposited on the surface of the nano silicon carbide through ultrasonic dispersion of the slurry and the nano silicon carbide, and the ultrasonic dispersion has the advantages of uniform dispersion and high efficiency. The mixed solvent is removed by freeze drying (recyclable), in which case the properties of the blowing agent are not affected. And mixing the dry powder with the basic lubricating oil, wherein the graphene is deposited on the surface of the nano silicon carbide, so that the graphene cannot be agglomerated in the basic lubricating oil. The heating grinding is used for preventing agglomeration, and grinding and dispersing possibly agglomerated particles; the heating is to foam the foaming agent, and the graphene is dispersed more uniformly in the foaming process; the heating and grinding are processed together, the graphene is dispersed more uniformly, a synergistic effect is achieved, and the processing time can be shortened compared with the case that the graphene is separated from the graphene, so that the preparation efficiency is improved. Finally, defoaming to obtain the finished product. The whole preparation process is relatively simple in process, has low requirements on temperature and pressure, and can be suitable for large-scale production.

2. Graphene is a nanoscale microchip, due to weak van der waals force between layers, the sheets are easy to slip under the shearing action, the graphene has a low friction coefficient, can be used as an excellent antifriction and wear-resistant material, and can completely meet the requirement of precision lubrication due to the nanoscale, and the nanoscale has a repair function on wear generated by lubrication, so that the graphene is superior to the traditional layered solid lubricating materials such as graphite, molybdenum disulfide and the like in performance. The silicon carbide has stable chemical property, high heat conductivity coefficient, small thermal expansion coefficient and good wear resistance. The silicon carbide and the graphene have a synergistic lubricating effect, a better ball effect is formed, the friction coefficient between friction pairs (the friction pairs are the most important elements for end face sealing) and the abrasion loss of materials can be reduced, and the heat conductivity coefficient and the heat conductivity of the base oil can be obviously improved. The graphene is deposited on the surface of the nano silicon carbide, so that the dispersion performance of the graphene in the basic lubricating oil can be obviously improved, and the thermal conductivity of the graphene-based lubricating oil can be improved due to the fact that the nano silicon carbide has high thermal conductivity. The graphene-based lubricating oil prepared by the preparation method has the advantages of small friction resistance coefficient, high heat conductivity coefficient, high stability and good compatibility, the friction coefficient is small, so that a mechanical part is well protected, and the heat generated in the friction process can be timely removed due to the high heat conductivity coefficient, so that the service life of the mechanical part is prolonged.

Drawings

Fig. 1 shows a flow chart of a method for preparing graphene-based lubricating oil by micro-blasting dispersed graphene according to the present invention.

Detailed Description

The present invention will be described in further detail with reference to specific embodiments, but it should not be construed that the scope of the present invention is limited to the following examples. Various substitutions and alterations can be made by those skilled in the art and by conventional means without departing from the spirit of the method of the invention described above.