Rapid long-acting solid-liquid composite super-lubricity rubber surface layer and preparation method thereof

Abstract

According to the rapid long-acting solid-liquid composite super-lubricity rubber surface layer and the preparation method thereof, a rubber substrate is subjected to Wiener texturing in advance, then a hydrogen-containing carbon film is prepared on the rubber surface by using a vapor deposition technology, and then the film is subjected to oleophylic treatment; meanwhile, the MXene-based two-dimensional material and other two-dimensional materials are subjected to intercalation treatment to prepare a two-dimensional intercalation material, the two-dimensional intercalation material is uniformly dispersed in lubricating oil, and finally, the oleophylic carbon film is subjected to oil immersion treatment. The textured Wiener hole can be used as an oil reservoir, the lipophilic treatment can ensure that lubricating oil rapidly infiltrates the surface of the carbon film to form an oil film, and the two-dimensional intercalation material can rapidly form a heterojunction matching pair under the action of normal load, so that the running-in time at the early stage of friction is effectively shortened, and the super-lubricity characteristic is rapidly realized. The two-dimensional intercalation material is dispersed in the oil liquid, and the long-term effect of the super-lubricity characteristic can be achieved through the self-compensation effect of the oil liquid.

Description

Technical Field

[0001] The present invention relates to a fast and long-lasting solid-liquid composite super-slip rubber surface layer and a preparation method thereof, and in particular to a method for preparing a solid-liquid composite super-slip rubber surface of Wiener texture + carbon film + two-dimensional intercalation material / lubricating oil compound + oil immersion treatment, which is used for the preparation of dynamic seals and belongs to the field of solid lubricating materials and tribology. Background Art

[0002] There are a large number of sealing devices in modern industrial equipment to prevent leakage of working media and intrusion of external dust and foreign objects. Once the sealing medium leaks, it may cause material loss and equipment damage at the least, or even cause fire and explosion. Most dynamic seal leakage accidents are related to the sealing failure of the seal. Rubber has excellent properties such as good elastic recovery and pressure resistance, and is the most commonly used sealing material. However, after the rubber dynamic seal is installed in the sealing groove, it is squeezed and deformed by the high-pressure medium, and the friction coefficient with the steel groove wall and the sealing rod under the action of periodic stress is extremely high (µ>1). The friction heat generated by high friction can easily cause the rubber seal to soften and quickly wear out and fail, causing the high-pressure sealing medium to leak from the damaged part, affecting the safe and reliable service of the equipment. Therefore, solving the problem of wear and failure of rubber seals must start with reducing friction.

[0003] Carbon film has excellent properties such as low adhesion to steel, low deposition temperature (deposition temperature ≤ 100 ° C, which will not cause fatal damage to the nitrile rubber matrix), controllable composition and mechanical strength, variable structure (such as multi-micro-nano structure, multi-element doping, etc.), and low friction and wear. Therefore, it is an ideal coating for achieving low friction on rubber surfaces. However, in the early stage of friction (before reaching stable low friction), carbon films will experience a period of running-in period, during which the friction coefficient is high (≥ 0.1 or even higher), which aggravates the abnormal wear of the film. At the same time, if the running-in period is long, it will lead to a decrease in lubrication efficiency, waste of resources and time, and even cause the entire sealing system to fail. In addition, although the two-dimensional material on the surface of the carbon film can further reduce its friction coefficient and even achieve super-slip, it is difficult for the two-dimensional material or two-dimensional intercalation material to remain on the surface of the carbon film, or it is difficult to self-compensate after wear. Therefore, its durability is poor and it is difficult to meet the high reliability and long-life service requirements of modern mechanical equipment. In summary, how to prepare a fast and long-lasting super-slip rubber surface is the top priority to solve the wear and failure of rubber seals in the future. Summary of the invention

[0004] The purpose of the present invention is to provide a fast and long-lasting solid-liquid composite super-slip rubber surface layer and a preparation method thereof, which comprises pre-texturing the rubber substrate with Wiener texture, and then using vapor deposition technology to prepare a carbon film on the textured rubber surface, and then subjecting the film to oleophilic treatment; at the same time, intercalating MXene-based two-dimensional materials with other two-dimensional materials to prepare a two-dimensional intercalated material, and uniformly dispersing it in lubricating oil, and finally subjecting the oleophilic carbon film to oil immersion treatment. First, under the action of normal load, the friction contact interface of the two-dimensional intercalation material dispersed in the lubricating oil will quickly form a heterojunction pair, thereby effectively shortening the friction running-in time and achieving the purpose of rapid superlubricity; secondly, the Wiener texture holes on the rubber surface can be used as a lubricating oil reservoir. During the friction process, the friction contact stress is repeatedly squeezed, causing the lubricating oil in the Wiener holes to be released, continuously providing lubricating oil to the friction interface, thereby achieving long-term lubrication; thirdly, after the surface of the carbon film is oleophilic treated, the lubricating oil can quickly spread on its surface to form a uniform lubricating oil film, ensuring the durability of lubrication; finally, the lubricating oil can work synergistically with the two-dimensional intercalation material, and the two-dimensional intercalation material can use the self-compensation effect of the lubricating oil to achieve rapid and long-term superlubricity of the interface.

[0005] 1. Rapid and long-lasting solid-liquid composite super-slip rubber surface and preparation method thereof The fast and long-lasting solid-liquid composite super-slip rubber surface of the present invention is prepared by pre-texturing the rubber substrate with Wiener texture, then using vapor deposition technology to prepare a carbon film on the textured rubber surface, and then performing an oleophilic treatment on the film; at the same time, MXene-based two-dimensional materials and other two-dimensional materials are intercalated to prepare a two-dimensional intercalated material, which is evenly dispersed in lubricating oil, and finally the oleophilic carbon film is immersed in oil to obtain the obtained surface.

[0006] The specific preparation steps are as follows: 1. Rubber base cleaning: Cut the rubber sheet into 20×20mm 2 The rubber sheet is soaked in a 50~60℃ soapy water solution for ultrasonic cleaning for 30~45min to remove grease and dirt on the rubber surface; then it is taken out and soaked in 90~95℃ distilled water for ultrasonic cleaning for 20~30min to remove possible residual soapy water solution; finally, it is blown dry with dry nitrogen and placed in a drying oven at 100~120℃ for another 20~30min to evaporate the residual moisture on the rubber surface; the above process is repeated 4~5 times; The rubber substrate is one of nitrile rubber, hydrogenated nitrile rubber, silicone rubber and EPDM rubber, the rubber surface roughness is ≤200nm, and the rubber thickness is 2-4mm.

[0007] 2. Wiener texture on rubber surface: Use laser texturing technology to perform Wiener texture on the rubber surface; the laser incident angle is 60~75 degrees, the textured nanopore structure is a conical structure, and the texture area accounts for 5~20% of the total surface area of ​​the rubber.

[0008] 3. Preparation of carbon film: Turn on the graphite target sputtering power supply, adjust the target-substrate distance to 8-12 cm, the target current to 3 A, the argon flow rate to 45-60 sccm, the Ar / CH4 flow ratio to 1.5:1, the substrate bias to -700 V, the gas pressure to 0.5-0.8 Pa, the duty cycle to 40-45%, the frequency to 60-70 KHz, and the deposition time to 120-150 min; The prepared amorphous carbon film is a hydrogenated amorphous carbon film with a film thickness of 500nm~1.0µm.

[0009] 4. Perform oleophilic treatment on the carbon film: firstly, the carbon film is etched with weak acid, and then the carbon film is modified to be oleophilic by chemical modification; The oleophilic treatment of the carbon film surface comprises the following steps: (1) Etching DLC ​​coating: Immerse the amorphous carbon film sample prepared above in a 10-15% hydrochloric acid (HCl) solution, and set the immersion etching time to 10-15 minutes. After etching is completed, immediately rinse the surface of the amorphous carbon film thoroughly with no less than 500 mL of distilled water for no less than 3 minutes; (2) Chemical modification: Mix 1-dodecanethiol and myristic acid in a mass ratio of 1:1 and dissolve them in 100 mL of ethanol. Immerse the etched carbon film in the solution for 1-2 hours to ensure that the chemical modifier can evenly act on the surface of the carbon film; (3) Drying treatment: Place the chemically modified carbon film in a clean environment and dry it naturally at room temperature for 1 hour.

[0010] 5. Intercalation treatment of MXene-based two-dimensional materials and other two-dimensional materials: ① After drying, evenly distribute the MXene powder on the sample stage of the gas phase intercalation reaction chamber and evacuate to 10 -2 Up to 10 -3 Torr, then introduce hydrogen; ② heat the MXene sample in the reaction chamber to 300-400℃, keep it warm for 1-3h to ensure that the hydrogen molecules are fully diffused into the interlayers of the MXene two-dimensional sheets; ③ turn off the hydrogen, let the reaction chamber cool naturally to room temperature and take it out; ④ disperse it with other two-dimensional materials in an organic solvent, ultrasonically disperse it evenly and dry it to obtain a two-dimensional intercalation material; The MXene-based two-dimensional material is one or more of Ti-based, V-based, and Mo-based MXene two-dimensional materials; the other two-dimensional materials are one or more of graphene-based, molybdenum disulfide, and boron nitride; the mass ratio of the MXene-based two-dimensional material to the other two-dimensional material is 1-1.5:1, and the organic solvent is one of anhydrous ethanol and acetone.

[0011] 6. Dispersing the two-dimensional intercalation material in lubricating oil: uniformly dispersing the two-dimensional intercalation material prepared in step 5 in lubricating oil to form a compound oil liquid; then immersing the oleophilic carbon film prepared in step 4 in the compound oil liquid, and finally wiping off the residual oil on the surface to obtain the fast and long-lasting super-slip rubber surface layer of the present invention.

[0012] The two-dimensional intercalation material is dispersed in lubricating oil: the two-dimensional intercalation material is added to the lubricating oil, and ultrasonically treated for 1 to 1.5 hours using an ultrasonic device to ensure uniform dispersion; the lubricating oil is one or more of animal and plant lubricating oil, petroleum lubricating oil and synthetic lubricating oil; The oil immersion treatment comprises: immersing the oleophilic carbon film in a two-dimensional intercalation material / lubricating oil compound solution for 20 to 40 minutes, and wiping off the residual oil on the surface after the immersion to obtain the fast and long-lasting solid-liquid composite super-slip rubber surface of the present invention.

[0013] Figure 1 This is a schematic diagram of the cross-sectional structure of the fast and long-lasting solid-liquid composite super-slip rubber surface prepared by the present invention. First, the two-dimensional intercalation material dispersed in the lubricating oil will quickly form a heterojunction pair at its friction contact interface under the action of the normal load, thereby effectively shortening the friction running-in time and achieving the purpose of rapidity; secondly, the Wiener texture holes on the rubber surface can be used as a lubricating oil reservoir. During the friction process, the friction contact stress is repeatedly squeezed to release the lubricating oil liquid in the Wiener holes, which continuously provides lubricating oil liquid for the friction interface to achieve long-term lubrication; thirdly, after the carbon film surface is oleophilic, the lubricating oil liquid can be quickly spread on its surface to form a uniform lubricating oil film to ensure the durability of lubrication; finally, the lubricating oil can synergize with the two-dimensional intercalation material, and the two-dimensional intercalation material can use the self-compensation effect of the lubricating oil to achieve fast and long-lasting super-slip properties of the interface. The present invention effectively overcomes the technical difficulties of the long friction running-in period and short super-slip life of the hard carbon-based coating on the soft surface of rubber, and the process is easy to control and has strong operability. The obtained rubber surface can quickly achieve long-term super-slip properties and is easy to apply industrially on a large scale.

[0014] 2. Rubber Surface Performance Test Constructed by the Present Invention 1. Friction running-in time The friction and running-in time of the rubber surface constructed by the present invention was tested using a ball-disc rotary friction and wear tester, and the results showed that the running-in time was 2 to 5 minutes.

[0015] 2. Friction coefficient Figure 2The friction coefficient curve of the fast and long-lasting solid-liquid composite super-slip rubber surface constructed by the present invention. The tribological performance of the rubber surface constructed by the present invention was evaluated using a friction and wear tester. The friction conditions are: ball-disc rotation mode, normal load 20N, friction pair is φ6mm GCr15 steel ball, and the test environment is air. The results show that the friction coefficient of conventional pure carbon film is relatively high (>0.3), while the friction coefficient of the rubber surface constructed by the present invention is significantly reduced (0.005~0.008).

[0016] In summary, the present invention has the following advantages compared with the prior art: 1. During the friction process, under the action of normal load, the friction contact interface of the two-dimensional intercalated material will quickly form a heterojunction pair, thereby effectively shortening the friction running-in time and achieving rapid lubrication.

[0017] 2. The holes in the Wiener texture on the rubber surface can be used as lubricant reservoirs. During the friction process, the friction contact stress repeatedly squeezes the lubricant in the Wiener holes, causing the lubricant to be released, providing a continuous supply of lubricant to the friction interface, thus achieving long-term lubrication. 3. After the carbon film surface is oleophilic, the lubricating oil can quickly spread on its surface to form a uniform lubricating oil film, ensuring the durability of lubrication; 4. Lubricating oil can work synergistically with two-dimensional intercalation materials, and two-dimensional intercalation materials can utilize the self-compensation effect of lubricating oil to achieve fast and long-term super-lubricious interface properties.

[0018] 5. The present invention effectively overcomes the current technical difficulties of long friction running-in period and short super-lubricating life of hard carbon-based coatings on soft rubber surfaces. The process is not affected by other external factors such as friction load and environment, and can be applied to a variety of complex working conditions.

[0019] 6. The process of the present invention is simple and easy to control, with strong operability. The constructed rubber surface can quickly achieve super-slip properties and is easy to realize large-scale industrial application. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the cross-sectional structure of the surface of the fast and long-lasting solid-liquid composite super-slip rubber prepared by the present invention.

[0021] Figure 2 The friction coefficient curve diagram of the rubber surface constructed by the present invention and the original rubber surface. DETAILED DESCRIPTION

[0022] The preparation method and performance of the fast and long-lasting solid-liquid composite super-slip rubber surface of the present invention are further described below through specific examples.

[0023] Example 1 (1) Cut a 300×300×2 mm black nitrile rubber sheet (surface finish Ra<200 nm, thickness 3 mm) into 20×20 mm 2 The rubber sheet was soaked in 60℃ soapy water for 30 minutes to remove grease and dirt on the rubber surface; then it was taken out and soaked in 90℃ distilled water for 30 minutes to remove possible residual soapy water solution; finally, it was blown dry with dry nitrogen and placed in a drying oven at 120℃ for another 20 minutes to evaporate the residual water on the rubber surface. The above process was repeated 5 times; (2) After the rubber is cooled to room temperature, it is placed on the laser tray, the laser incident angle is adjusted to 60 degrees, and the excimer laser output in the ultraviolet band is used to perform Wiener texturing on the rubber surface. After the texturing is completed, the rubber substrate is removed from the fixture and placed in a magnetron sputtering vacuum chamber; (3) Close the vacuum chamber door and evacuate the vacuum to ≤2.0×10 –3 Pa; turn on the graphite target sputtering power supply, adjust the target-substrate distance to 8cm, the target current to 3A, the argon flow rate to 45sccm, the CH4 flow rate to 30sccm, the substrate bias to -700V, the gas pressure to 0.5Pa, the duty cycle to 40%, the frequency to 60KHz, and the deposition time to 120min. After the deposition is completed, wait for the temperature in the vacuum chamber to cool to room temperature before taking out the sample for use.

[0024] (4) Immerse the carbon film sample prepared above in a 10% hydrochloric acid (HCl) solution, and set the immersion etching time to 10 minutes. After etching, immediately rinse the carbon film sample thoroughly with 600 mL of distilled water for 5 minutes; take 0.30 g of 1-dodecanethiol and 0.30 g of myristic acid and dissolve them in 100 mL of ethanol, and immerse the etched carbon film in the solution for 1 hour to ensure that the chemical modifier can evenly act on the surface of the carbon film; after the chemical modification is completed, place the carbon film in a clean environment and dry it naturally at room temperature for 1 hour for use.

[0025] (5) First, dry the Ti3C2MXene powder in a vacuum oven at 80°C for 12 hours, then place the dried MXene powder sample into the sample stage of the gas phase intercalation reaction chamber, and evacuate the reaction chamber to 10⁻³ Torr. Introduce 99.999% pure hydrogen into the reaction chamber, and adjust the pressure of the reaction chamber to 1 atm (atmospheric pressure) to ensure that the hydrogen fully fills the entire reaction chamber. Heat the MXene sample in the reaction chamber to 300°C and maintain it for 1 hour to ensure that the hydrogen molecules have enough time to diffuse into the MXene interlayers and form a stable Ti3C2MXene material with an enlarged interlayer spacing. After the above process is completed, turn off the hydrogen and allow the reaction chamber to cool naturally to room temperature in a hydrogen atmosphere.

[0026] (6) Take 25 mg of Ti3C2MXene and 25 mg of MoS2 powder respectively, dissolve them in 50 mL of anhydrous ethanol, and use an ultrasonic device to perform ultrasonic treatment at a power of 300 W for 60 minutes to ensure that they are fully dispersed and dried to obtain the Ti3C2MXene / MoS2 two-dimensional intercalation material.

[0027] (7) Add the prepared two-dimensional intercalation material into 10 mL of animal or plant lubricating oil and use ultrasonic equipment to ultrasonicate for 1 hour to evenly disperse it to obtain a composite oil solution.

[0028] (8) Immerse the carbon film treated with oleophilicity in step (4) in the compound oil prepared in step (7) for about 20 minutes, take it out after the immersion is completed, and wipe the surface with a dust-free cloth to obtain the fast and long-lasting solid-liquid composite super-slip rubber surface of the present invention. The friction coefficient of the rubber surface in the atmospheric environment is as low as 0.005, and the running-in time is 5 minutes.

[0029] Example 2 (1) The silicone rubber pre-cleaning step is the same as in Example 1. Wherein: the silicone rubber surface finish Ra is less than 200 nm, and the thickness is 3 mm.

[0030] (2) After the rubber is cooled to room temperature, it is placed on the laser tray, the laser incident angle is adjusted to 75 degrees, and the excimer laser output in the ultraviolet band is used to perform Wiener texturing on the rubber surface. After the texturing is completed, the rubber substrate is removed from the fixture and placed in a magnetron sputtering vacuum chamber; (3) Same as Example 1; (4) Immerse the carbon film sample prepared above in a 15% hydrochloric acid (HCl) solution, and set the immersion etching time to 15 minutes. After etching, immediately rinse the carbon film thoroughly with 600 mL of distilled water for 5 minutes; take 0.40 g of 1-dodecanethiol and 0.40 g of myristic acid and dissolve them in 100 mL of ethanol, and immerse the etched carbon film in the solution for 2 hours to ensure that the chemical modifier can evenly act on the surface of the carbon film; after the chemical modification is completed, place the carbon film in a clean environment and dry it naturally at room temperature for 1 hour for use.

[0031] (5) First, the V4C3MXene powder was dried in a vacuum oven at 80°C for 12 hours, and then the dried MXene powder sample was placed in the sample stage of the gas phase intercalation reaction chamber, and the reaction chamber was evacuated to 10⁻³ Torr. Hydrogen with a purity of 99.999% was introduced into the reaction chamber, and the pressure of the reaction chamber was adjusted to 1 atm (atmospheric pressure) to ensure that the hydrogen fully filled the entire reaction chamber. The MXene sample in the reaction chamber was heated to 400°C and maintained for 2 hours to ensure that the hydrogen molecules had enough time to diffuse into the MXene interlayers and form a stable V4C3MXene material with an enlarged interlayer spacing. After the above process was completed, the reaction chamber was naturally cooled to room temperature in a hydrogen atmosphere.

[0032] (6) Take 25 mg of V4C3MXene and 25 mg of graphene powder respectively, dissolve them in 50 mL of acetone solution, and use an ultrasonic device to perform ultrasonic treatment at a power of 300 W for 60 minutes to ensure that they are fully dispersed and dried to obtain the V4C3MXene / graphene two-dimensional intercalation material.

[0033] (7) The prepared two-dimensional intercalation material is added to 10 mL of petroleum lubricating oil and ultrasonically treated for 1.5 hours to uniformly disperse the material, thereby obtaining a composite oil.

[0034] (8) Immerse the carbon film treated with oleophilicity in step (4) in the compound oil prepared in step (7) for about 40 minutes, then take it out and wipe the surface with a dust-free cloth to obtain the fast and long-lasting solid-liquid composite super-slip rubber surface of the present invention. The friction coefficient of the rubber surface in the atmospheric environment is as low as 0.007, and the running-in time is 3 minutes.

[0035] Example 3 (1) The hydrogenated nitrile rubber pre-cleaning step is the same as in Example 1. Wherein: the silicone rubber surface finish Ra is less than 200 nm, and the thickness is 2 mm.

[0036] (2) to (4) are the same as in Example 2; (5) First, the Mo2C MXene powder was dried in a vacuum oven at 80 °C for 12 hours, and then the dried MXene powder sample was placed in the sample stage of the gas phase intercalation reaction chamber, and the reaction chamber was evacuated to 10⁻³ Torr. Hydrogen with a purity of 99.999% was introduced into the reaction chamber, and the pressure of the reaction chamber was adjusted to 1 atm (atmospheric pressure) to ensure that the hydrogen fully filled the entire reaction chamber. The MXene sample in the reaction chamber was heated to 350 °C and maintained for 1.5 hours to ensure that the hydrogen molecules had enough time to diffuse into the MXene interlayers and form a stable Mo2C MXene material with an enlarged interlayer spacing. After the above process was completed, the reaction chamber was naturally cooled to room temperature in a hydrogen atmosphere.

[0037] (6) Take 30 mg of Mo2C MXene and 20 mg of graphene powder respectively, dissolve them in 50 mL of acetone solution, and use an ultrasonic device to perform ultrasonic treatment at a power of 300 W for 60 minutes to ensure that they are fully dispersed and dried to obtain the Mo2C MXene / graphene two-dimensional intercalation material.

[0038] (7) The prepared two-dimensional intercalation material was added to 10 mL of synthetic lubricating oil and ultrasonically treated for 75 minutes to uniformly disperse the material to obtain a compound oil.

[0039] (8) Immerse the carbon film treated with oleophilicity in step (4) in the compound oil prepared in step (7) for about 30 minutes, then take it out and wipe the surface with a dust-free cloth to obtain the fast and long-lasting solid-liquid composite super-slip rubber surface of the present invention. The friction coefficient of the rubber surface in the atmospheric environment is as low as 0.008, and the running-in time is 2 minutes.

Claims

1. A fast and long-lasting solid-liquid composite super-slip rubber surface layer is prepared by pre-texturing the rubber substrate, and then using vapor deposition technology to prepare a carbon film on the rubber texture surface, and then oleophilic treatment of the carbon film; at the same time, MXene-based two-dimensional materials and other two-dimensional materials are intercalated to prepare two-dimensional intercalated materials, and the materials are evenly dispersed in lubricating oil, and finally the oleophilic carbon film is immersed in oil.

2. A method for preparing a fast and long-lasting solid-liquid composite super-slip rubber surface layer as claimed in claim 1, characterized in that: The following steps are involved: 1) Rubber base cleaning: Cut the rubber sheet into 20×20mm 2 The rubber sheet is soaked in a 50~60℃ soapy water solution for ultrasonic cleaning for 30~45min to remove grease and dirt on the rubber surface; then it is taken out and soaked in 90~95℃ distilled water for ultrasonic cleaning for 20~30min to remove possible residual soapy water solution; finally, it is blown dry with dry nitrogen and placed in a drying oven at 100~120℃ for another 20~30min to evaporate the residual moisture on the rubber surface; the above process is repeated 4~5 times; 2) Rubber surface Wiener texturing: Use laser texturing technology to perform Wiener texturing on the rubber surface; 3) Preparation of carbon film: Turn on the graphite target sputtering power supply, adjust the target-substrate distance to 8-12 cm, the target current to 3 A, the argon flow rate to 45-60 sccm, the Ar / CH4 flow ratio to 1.5:1, the substrate bias to -700 V, the gas pressure to 0.5-0.8 Pa, the duty cycle to 40-45%, the frequency to 60-70 KHz, and the deposition time to 120-150 min; 4) Performing oleophilic treatment on the carbon film: firstly, the carbon film is etched with a weak acid, and then the carbon film is modified to be oleophilic by chemical modification; 5) Intercalation treatment of MXene-based two-dimensional materials and other two-dimensional materials: ① After drying, evenly distribute the MXene powder on the sample stage of the gas phase intercalation reaction chamber and evacuate to 10 -2 Up to 10 -3 Torr, then introduce hydrogen; ② heat the MXene sample in the reaction chamber to 300-400℃, keep it warm for 1-3h, and ensure that the hydrogen molecules are fully diffused into the interlayers of the MXene two-dimensional sheets; ③ turn off the hydrogen, let the reaction chamber cool naturally to room temperature and take it out; ④ disperse it with other two-dimensional materials in an organic solvent, ultrasonically disperse it evenly and dry it to obtain a two-dimensional intercalation material; 6) Dispersing the two-dimensional intercalation material in lubricating oil: uniformly dispersing the two-dimensional intercalation material prepared in step 5) in lubricating oil to form a compound oil liquid; then immersing the oleophilic carbon film prepared in step 4) in the compound oil liquid, and finally wiping off the residual oil on the surface to obtain the fast and long-lasting super-slip rubber surface layer of the present invention.

3. The method for preparing the fast and long-lasting solid-liquid composite super-slip rubber surface layer as claimed in claim 2, characterized in that: In step 1), the rubber substrate is one of nitrile rubber, hydrogenated nitrile rubber, silicone rubber and EPDM rubber, the rubber surface roughness is ≤200nm, and the rubber thickness is 2-4mm.

4. The method for preparing the fast and long-lasting solid-liquid composite super-slip rubber surface layer as claimed in claim 2, characterized in that: In step 2), the texturing method is laser texturing, the laser incident angle is 60-75 degrees, the textured nanopore structure is a conical structure, and the texture area accounts for 5-20% of the total surface area of ​​the rubber.

5. The method for preparing the fast and long-lasting solid-liquid composite super-slip rubber surface layer as claimed in claim 2, characterized in that: In step 3), the amorphous carbon film is a hydrogenated amorphous carbon film, and the film thickness is 500nm~1.0µm.

6. The method for preparing the fast and long-lasting solid-liquid composite super-slip rubber surface layer as claimed in claim 2, characterized in that: In step 4), the weak acid etching is performed by immersing the carbon film in a 10-15% HCl solution for 10-15 minutes; the chemical method is performed by immersing the carbon film after weak acid etching in a solution of 1-dodecanethiol and myristic acid mixed in a mass ratio of 1:1 for 1-2 hours.

7. The method for preparing the fast and long-lasting solid-liquid composite super-slip rubber surface layer as claimed in claim 2, characterized in that: In step 5), the MXene-based two-dimensional material is one or more of Ti-based, V-based, and Mo-based MXene two-dimensional materials; the other two-dimensional materials are one or more of graphene-based, molybdenum disulfide, and boron nitride; the mass ratio of the MXene-based two-dimensional material to the other two-dimensional materials is 1-1.5:1, and the organic solvent is one of anhydrous ethanol and acetone.

8. The method for preparing the fast and long-lasting solid-liquid composite super-slip rubber surface layer as claimed in claim 2, characterized in that: In step 6), the two-dimensional intercalation material is uniformly dispersed in lubricating oil by ultrasonic means; the lubricating oil is one or more of animal and plant lubricating oil, petroleum lubricating oil and synthetic lubricating oil, and the sample immersion time is 20 to 40 minutes.

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