CN112480994B - Lubricating oil, preparation method and application - Google Patents
Lubricating oil, preparation method and application Download PDFInfo
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- CN112480994B CN112480994B CN202011380271.6A CN202011380271A CN112480994B CN 112480994 B CN112480994 B CN 112480994B CN 202011380271 A CN202011380271 A CN 202011380271A CN 112480994 B CN112480994 B CN 112480994B
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- lubricating oil
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- oil
- copper particles
- oleic acid
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- 239000010687 lubricating oil Substances 0.000 title claims abstract description 64
- 238000002360 preparation method Methods 0.000 title claims abstract description 11
- 229910052802 copper Inorganic materials 0.000 claims abstract description 47
- 239000010949 copper Substances 0.000 claims abstract description 47
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 37
- 238000007789 sealing Methods 0.000 claims abstract description 35
- ZQPPMHVWECSIRJ-KTKRTIGZSA-N oleic acid Chemical compound CCCCCCCC\C=C/CCCCCCCC(O)=O ZQPPMHVWECSIRJ-KTKRTIGZSA-N 0.000 claims abstract description 25
- WRIDQFICGBMAFQ-UHFFFAOYSA-N (E)-8-Octadecenoic acid Natural products CCCCCCCCCC=CCCCCCCC(O)=O WRIDQFICGBMAFQ-UHFFFAOYSA-N 0.000 claims abstract description 24
- LQJBNNIYVWPHFW-UHFFFAOYSA-N 20:1omega9c fatty acid Natural products CCCCCCCCCCC=CCCCCCCCC(O)=O LQJBNNIYVWPHFW-UHFFFAOYSA-N 0.000 claims abstract description 24
- QSBYPNXLFMSGKH-UHFFFAOYSA-N 9-Heptadecensaeure Natural products CCCCCCCC=CCCCCCCCC(O)=O QSBYPNXLFMSGKH-UHFFFAOYSA-N 0.000 claims abstract description 24
- ZQPPMHVWECSIRJ-UHFFFAOYSA-N Oleic acid Natural products CCCCCCCCC=CCCCCCCCC(O)=O ZQPPMHVWECSIRJ-UHFFFAOYSA-N 0.000 claims abstract description 24
- 239000005642 Oleic acid Substances 0.000 claims abstract description 24
- QXJSBBXBKPUZAA-UHFFFAOYSA-N isooleic acid Natural products CCCCCCCC=CCCCCCCCCC(O)=O QXJSBBXBKPUZAA-UHFFFAOYSA-N 0.000 claims abstract description 24
- 239000002245 particle Substances 0.000 claims abstract description 22
- 239000006185 dispersion Substances 0.000 claims abstract description 12
- 230000001050 lubricating effect Effects 0.000 claims abstract description 7
- 239000003921 oil Substances 0.000 claims description 35
- 238000003756 stirring Methods 0.000 claims description 20
- 239000002202 Polyethylene glycol Substances 0.000 claims description 15
- 229920001223 polyethylene glycol Polymers 0.000 claims description 15
- 238000001132 ultrasonic dispersion Methods 0.000 claims description 2
- 238000010276 construction Methods 0.000 abstract description 15
- 239000002184 metal Substances 0.000 abstract description 10
- 229910052751 metal Inorganic materials 0.000 abstract description 10
- 230000002035 prolonged effect Effects 0.000 abstract description 4
- 239000008187 granular material Substances 0.000 abstract 1
- 239000002105 nanoparticle Substances 0.000 description 42
- 238000000034 method Methods 0.000 description 13
- 230000008569 process Effects 0.000 description 10
- 239000012208 gear oil Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000001914 filtration Methods 0.000 description 4
- 238000005299 abrasion Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 3
- 239000012535 impurity Substances 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 230000008439 repair process Effects 0.000 description 3
- 238000005054 agglomeration Methods 0.000 description 2
- 230000002776 aggregation Effects 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 238000011049 filling Methods 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 238000010008 shearing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005422 blasting Methods 0.000 description 1
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- YAFQFNOUYXZVPZ-UHFFFAOYSA-N liproxstatin-1 Chemical compound ClC1=CC=CC(CNC=2C3(CCNCC3)NC3=CC=CC=C3N=2)=C1 YAFQFNOUYXZVPZ-UHFFFAOYSA-N 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000010907 mechanical stirring Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- 230000005641 tunneling Effects 0.000 description 1
Images
Classifications
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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
- C10M161/00—Lubricating compositions characterised by the additive being a mixture of a macromolecular compound and a non-macromolecular compound, each of these compounds being essential
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/10—Making by using boring or cutting machines
- E21D9/11—Making by using boring or cutting machines with a rotary drilling-head cutting simultaneously the whole cross-section, i.e. full-face machines
-
- 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
- C10M2201/05—Metals; Alloys
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
- C10M2207/10—Carboxylix acids; Neutral salts thereof
- C10M2207/12—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms
- C10M2207/125—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms having hydrocarbon chains of eight up to twenty-nine carbon atoms, i.e. fatty acids
- C10M2207/126—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms having hydrocarbon chains of eight up to twenty-nine carbon atoms, i.e. fatty acids monocarboxylic
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2209/00—Organic macromolecular compounds containing oxygen as ingredients in lubricant compositions
- C10M2209/10—Macromolecular compoundss obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- C10M2209/103—Polyethers, i.e. containing di- or higher polyoxyalkylene groups
- C10M2209/104—Polyethers, i.e. containing di- or higher polyoxyalkylene groups of alkylene oxides containing two carbon atoms only
Abstract
The invention provides lubricating oil, a preparation method and application, wherein the added nano copper particles are subjected to dispersion treatment by utilizing oleic acid, and then added into the lubricating oil, so that the lubricating property of the lubricating oil can be improved, the frictional wear between friction pairs can be effectively reduced, meanwhile, the worn parts can be repaired after the wear is generated, and the service life of the friction pairs is prolonged. This scheme adopts and to add soft metal nanometer copper granule in the main drive seal structure lubricating oil, utilizes the soft metal of nanometer to lubricate and the selfreparing to wear-resisting slide and the seal lip structure in the main drive seal structure. The service life of the sealing structure can be effectively prolonged, the frequency of replacing the sealing structure in construction is reduced, and the construction cost is reduced.
Description
Technical Field
The invention relates to the field of TBM repair, and particularly relates to lubricating oil, a preparation method and application.
Background
The mountain tunnel has long construction distance, large buried depth, large surrounding geological pressure and severe construction environment. The traditional drilling and blasting method has poor construction environment and safety, so that a full-face Tunnel Boring Machine (TBM) is adopted to carry out high-standard, high-quality and high-safety construction aiming at hard rock geology.
The long-distance construction and tunneling of the TBM can cause excessive abrasion between a wear-resistant slide way and a sealing lip in the main driving sealing structure, so that the fit clearance of the sealing structure is increased. If the sealing system enters gravel impurities, the failure of the sealing system is accelerated, equipment failure is caused, and the project is stagnated. The existing solution is to judge whether the fit clearance between the wear-resistant slideway and the sealing lip is increased or the structure is failed by observing whether oil leaks in the sealing detection channel. And after the sealing fails, the construction is stopped, and the sealing structural part is replaced.
The original technical scheme is to repair the main driving sealing element, and the operation is relatively complex. The main drive sealing structure needs to be disassembled, the abrasion of the abrasion-resistant slide way is repaired, and the sealing lip structure is replaced. Due to the fact that the construction site is narrow in space and difficult to repair the structure comprehensively, errors exist in the matching precision of the repaired sealing structure, and the service life of the replaced sealing structure is shortened. Frequent replacement of the sealing structural part causes engineering shutdown on one hand, and has high replacement cost on the other hand, thereby greatly improving the construction cost.
Disclosure of Invention
The invention provides lubricating oil, a preparation method and application, wherein the lubricating effect between a wear-resistant slideway and a rubber sealing lip can be enhanced by adding soft metal nano copper particles into the lubricating oil of a main driving sealing structure, the wear of a friction pair is reduced, and meanwhile, the wear part is filled and repaired by the nano particles after the wear is generated, so that the continuous wear of the friction pair is reduced.
A lubricating oil contains nano copper particles.
The nano copper particles account for 0.25-0.75% of the mass of the lubricating oil.
The nano-copper particles are subjected to dispersion treatment by using oleic acid, and the addition amount of the oleic acid is 15-25% of the mass of the nano-copper particles.
The preparation method of the lubricating oil comprises the following steps:
(a) adding the nano-copper particles into oleic acid, stirring for preliminary dispersion, and sealing and placing after stirring to obtain dispersed nano-copper particles;
preferably, the nanoparticles are isolated from air and moisture, and the nano-copper particles can be oxidized quickly in the air due to the large performance of the nano-copper particles, so that the proper performance is lost. And placing the nano particles in oleic acid for isolation and sealing treatment. Oleic acid is a surfactant and can effectively prevent the agglomeration of nano-particles.
(b) And (b) adding polyethylene glycol into lubricating oil, stirring, adding the dispersed nano copper particles obtained in the step (a), and performing ultrasonic dispersion to obtain the lubricating oil.
The molecular weight of the polyethylene glycol in the step (b) is 200-400, and the addition amount accounts for 4-8% of the mass of the lubricating oil.
Preferably, the invention also provides application of the lubricating oil in the TBM main drive sealing structure.
And conveying lubricating oil into the main driving sealing structure through an oil conveying pipeline, wherein the lubricating oil is used for lubricating and self-repairing a wear-resistant slide way and a sealing lip in the main driving sealing structure.
The nano particles have the function of micro bearings in the friction pairs, and the nano particles uniformly dispersed in the lubricating oil act between the two friction pairs to convert the relative sliding friction between the friction pairs into rolling friction to a certain extent, so that the support effect is achieved, and the excellent wear-resistant and friction-reducing performance is also shown.
Meanwhile, the nano copper particles dispersed in the lubricating oil have larger surface energy, and fill up micro damage and micro scratches on the friction surface through adsorption, deposition and embedding effects, so that the surface of the friction pair is smooth and flat, the excessive local stress in the friction process is favorably reduced, and a certain repairing effect is achieved. In this case, the smoother the surface of the friction pair, the fewer the wear points, the larger the contact surface, and the greater the filling and repairing action of the nanoparticles.
Because the friction pair continuously moves relatively, the alloy matrix of the wear-resistant slideway is continuously deformed and worn, new alloy is exposed on the surface of the friction pair, the surface energy of the metal is increased, the soft metal nano copper particles are contacted with the metal material exposed by wear, a layer of protective film with low shearing strength is formed through physical and chemical actions, the sliding friction between the friction pair is converted into the sliding friction between the protective films, and the wear to the friction pair is reduced. The nano soft metal copper has a lubricating behavior similar to that of a high-viscosity fluid, and meanwhile, the shearing strength of all metals is low, so that slippage is generated in a friction pair, and the nano soft metal copper has lubricating and self-repairing properties.
The scheme can effectively prolong the service life of the sealing structural part, reduce the frequency of replacing the sealing structure in construction and reduce the construction cost.
The invention has the beneficial effects that:
(1) according to the invention, a main drive sealing structure repairing process is developed and designed, soft metal copper nanoparticles are added into lubricating oil, so that the lubricating performance of the lubricating oil can be improved, the frictional wear between friction pairs can be effectively reduced, meanwhile, the worn parts can be repaired after the wear is generated, and the service life of the friction pairs is prolonged.
(2) The added copper nanoparticles are dispersed by oleic acid, the oleic acid can stabilize the nanoparticles, meanwhile, carboxyl of the oleic acid can be gathered with the surfaces of the nanoparticles, and oleic acid groups on the surfaces of the nanoparticles are mutually exclusive, so that a repulsive force is provided to reduce mutual agglomeration among the nanoparticles.
(3) The addition of polyethylene glycol increases the viscosity of the lubricating oil and also increases the dispersibility of the nanoparticles in the lubricating oil. The precipitation of the nano particles in the use process is reduced, and the effect of the self-repairing process of the nano particles is fully exerted.
(4) The condition that partial particles cannot be uniformly dispersed under the action of mechanical stirring is effectively reduced by adding ultrasonic vibration during mixing and stirring, and the ultrasonic vibration can act on all areas of lubricating oil, so that the dispersion of nano particles in the lubricating oil is remarkably increased.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic view of a primary drive seal arrangement of the present invention;
FIG. 2 is a diagram of an oil supply line for the restoration mode described in the present invention.
The system comprises a rubber seal lip 1, a lubricating oil 2 (added with nano particles), a wear-resistant slideway 3, a lubricating oil main oil tank 4, an oil delivery pump 5, a lubricating oil pressure sensor 6, a lubricating oil pipeline 7, a first filtering oil pipeline 8, a flowmeter 9, a second filtering oil pipeline 9, a one-way valve 10, a throttle valve 11, a manual ball valve 12, an oil return pump 13, an oil return pipeline 14, a first filter oil return pipeline 15, an oil return cooler and an oil return pipeline 16.
Detailed Description
The technical solutions of the present invention will be described clearly and completely below with reference to embodiments of the present invention, and it should be apparent that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without inventive effort based on the embodiments of the present invention, are within the scope of the present invention.
Example 1
A wear self-repairing process for a wear-resistant slideway of a TBM main driving sealing structure is characterized in that soft metal copper nanoparticles are added into lubricating oil of the sealing structure. After the wear-resisting slide way in the friction pair material is worn out in actual work, the service life of the friction pair is prolonged by filling and repairing the nano particles.
The preparation method of the lubricating oil with the self-repairing process comprises the following steps:
(1) the method comprises the following steps of firstly carrying out primary dispersion treatment on added copper nanoparticles, adding the copper nanoparticles into prepared oleic acid, containing the oleic acid in a sealed container, adding 15% of the oleic acid, carrying out primary dispersion on cleaned stirring equipment after adding the copper nanoparticles, and carrying out sealed placement after stirring.
(2) Polyethylene glycol with the molecular weight of 200 is added into prepared lubricating oil with the trademark of S2G 200, and the added mass accounts for 4 percent. After the addition, the lubricating oil is stirred by adopting stirring equipment, so that the polyethylene glycol is fully dissolved in the lubricating oil.
(3) Oleic acid and copper nanoparticles were poured together into a lubricating oil in which polyethylene glycol was dissolved. The mass ratio of the copper nanoparticles is 0.25% of that of the lubricating oil, and after the copper nanoparticles are added, the mixture is stirred for 15min by using a cleaned stirring device and dispersed with ultrasonic vibration.
(4) As shown in figure 1, gear oil with nanoparticles is pumped from a main lubricating oil tank 4 to a sealed cavity through an oil delivery pump 5, the pumping pressure of the oil delivery pump 5 is confirmed to be kept at about 3bar through a lubricating oil pressure sensor 6, large-particle impurities in the oil tank are filtered through a first filtering 7 of an oil delivery pipeline, the pumped oil quantity is confirmed through a flowmeter 8, micron-sized impurities generated by a friction pair are filtered through a second filtering 9 of the oil delivery pipeline, a one-way valve 10 ensures that the gear oil does not flow back, and a throttle valve 11 adjusts the supply amount of the gear oil pair and then reaches the gear oil cavity. The gear oil after the sealed friction pair is lubricated and repaired is pumped by a manual ball valve 12 and a return oil pump 13, passes through a return oil pipeline first filter 14, a return oil cooler 15 and a return oil pipeline second filter 16, and finally returns to the lubricating oil main oil tank 4. The pressure difference between the pressure of the oil supply pump and the construction surface is kept at 3bar, the oil supply flow is 80ml/min, and the temperature of the main oil tank of the lubricating oil is kept at about 28 ℃.
Example 2
The preparation method of the lubricating oil with the self-repairing process comprises the following steps:
(1) the method comprises the following steps of firstly carrying out primary dispersion treatment on added copper nanoparticles, adding the copper nanoparticles into prepared oleic acid, containing the oleic acid in a sealed container, adding the oleic acid with the mass being 20% of that of the copper nanoparticles, carrying out primary dispersion on cleaned stirring equipment after adding the copper nanoparticles, and carrying out sealed placement after stirring.
(2) Polyethylene glycol with the molecular weight of 300 is added into prepared lubricating oil with the trademark of S2G 200, and the added mass accounts for 6 percent. After the addition, the lubricating oil is stirred by adopting stirring equipment, so that the polyethylene glycol is fully dissolved in the lubricating oil.
(3) Oleic acid and copper nanoparticles were poured together into a lubricating oil in which polyethylene glycol was dissolved. The mass ratio of the copper nanoparticles is 0.5% of that of the lubricating oil, and after the copper nanoparticles are added, the mixture is stirred for 25min by using a cleaned stirring device and dispersed with ultrasonic vibration.
(4) The lubricating oil dispersed with copper nanoparticles is injected into the friction pair of the main drive seal through the main drive seal oil supply system, the specific working process is the same as that of the embodiment 1, the pressure difference between the pressure of the oil supply pump and the construction surface is kept at 4bar, the oil supply flow is 95ml/min, and the temperature of the oil tank is kept at about 30 ℃.
Example 3
The preparation method of the lubricating oil with the self-repairing process comprises the following steps:
(1) firstly, carrying out primary dispersion treatment on added copper nanoparticles, adding the copper nanoparticles into prepared oleic acid, containing the oleic acid in a sealed container, adding 25% of the oleic acid, carrying out primary dispersion on cleaned stirring equipment after adding the copper nanoparticles, and carrying out sealed placement after stirring.
(2) Polyethylene glycol with the molecular weight of 400 is added into prepared lubricating oil with the trademark of S2G 200, and the added mass accounts for 8 percent. Stirring the lubricating oil by adopting stirring equipment after adding so as to fully dissolve the polyethylene glycol in the lubricating oil.
(3) Oleic acid and copper nanoparticles were poured together into a lubricating oil in which polyethylene glycol was dissolved. The mass ratio of the copper nanoparticles is 0.75% of that of the lubricating oil, and after the copper nanoparticles are added, the mixture is stirred for 30min by using a cleaned stirring device and dispersed with ultrasonic vibration.
(4) The lubricating oil dispersed with copper nanoparticles is injected into the friction pair of the main drive seal through the main drive seal oil supply system, the specific working process is the same as that of the embodiment 1, the pressure difference between the pressure of the oil supply pump and the construction surface is kept at 5bar, the oil supply flow is 110ml/min, and the temperature of the oil tank is kept at about 32 ℃.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (3)
1. A lubricating oil characterized by: the lubricating oil comprises nano copper particles;
the nano copper particles account for 0.25-0.75% of the mass of the lubricating oil;
the nano-copper particles are subjected to dispersion treatment by using oleic acid, and the addition amount of the oleic acid is 15-25% of the mass of the nano-copper particles;
the preparation method comprises the following steps:
(a) adding the nano-copper particles into oleic acid, stirring for preliminary dispersion, and sealing and placing after stirring to obtain dispersed nano-copper particles;
(b) and (2) adding polyethylene glycol into the lubricating oil S2G 200, wherein the molecular weight of the polyethylene glycol is 200-400, and the addition amount of the polyethylene glycol accounts for 4-8% of the mass of the lubricating oil, stirring, adding the dispersed nano copper particles obtained in the step (a), and performing ultrasonic dispersion to obtain the lubricating oil.
2. The use of the lubricating oil prepared by the preparation method of claim 1 in TBM main drive sealing structures.
3. Use according to claim 2, characterized in that: and conveying lubricating oil into the main driving sealing structure through an oil conveying pipeline, wherein the lubricating oil is used for lubricating and self-repairing a wear-resistant slide way and a sealing lip in the main driving sealing structure.
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