CN113234250B - Preparation method of ultrahigh wear-resistant rubber-based composite material with continuous structure surface carbon film - Google Patents

Preparation method of ultrahigh wear-resistant rubber-based composite material with continuous structure surface carbon film Download PDF

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CN113234250B
CN113234250B CN202110538435.1A CN202110538435A CN113234250B CN 113234250 B CN113234250 B CN 113234250B CN 202110538435 A CN202110538435 A CN 202110538435A CN 113234250 B CN113234250 B CN 113234250B
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rubber
carbon film
composite material
based composite
continuous structure
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CN113234250A (en
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强力
张俊彦
张斌
高凯雄
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Lanzhou Institute of Chemical Physics LICP of CAS
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    • C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
    • C08J7/04—Coating
    • C08J7/06—Coating with compositions not containing macromolecular substances
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
    • C08J7/04—Coating
    • C08J7/046—Forming abrasion-resistant coatings; Forming surface-hardening coatings
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
    • C23C14/02—Pretreatment of the material to be coated
    • C23C14/021—Cleaning or etching treatments
    • C23C14/022—Cleaning or etching treatments by means of bombardment with energetic particles or radiation
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
    • C23C14/06—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the coating material
    • C23C14/0605—Carbon
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
    • C23C14/22—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the process of coating
    • C23C14/34—Sputtering
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
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    • C08J2309/00—Characterised by the use of homopolymers or copolymers of conjugated diene hydrocarbons
    • C08J2309/02—Copolymers with acrylonitrile
    • C—CHEMISTRY; METALLURGY
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    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2327/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers
    • C08J2327/02—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers not modified by chemical after-treatment
    • C08J2327/12—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers not modified by chemical after-treatment containing fluorine atoms
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    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2383/00—Characterised by the use of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen, or carbon only; Derivatives of such polymers
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Abstract

The invention discloses a preparation method of an ultrahigh wear-resistant rubber-based composite material with a continuous structure surface carbon film, which comprises the steps of pre-cleaning a rubber substrate, carrying out micro-nano texture, sequentially carrying out bombardment cleaning and activation treatment on the rubber substrate with the micro-nano texture by using nitrogen plasma and argon plasma, and depositing the carbon film on the surface of the rubber substrate, thereby obtaining the ultrahigh wear-resistant rubber-based composite material with a continuous structure. The rubber surface coating designed by the invention is of a continuous structure, has the characteristics of low friction coefficient, ultrahigh wear resistance, long service life and the like, has good flexibility and excellent binding force on the surface of the rubber, and can be used for preparing dynamic sealing elements.

Description

Preparation method of ultrahigh wear-resistant rubber-based composite material with continuous structure surface carbon film
Technical Field
The invention relates to an ultrahigh wear-resistant rubber-based composite material, in particular to a preparation method of an ultrahigh wear-resistant rubber-based composite material with a continuous structure surface carbon film, which is mainly used for preparing a sealing element and belongs to the technical field of composite materials and the field of wear-resistant materials.
Background
In modern industrial installations, a large number of rubber seals are present to prevent leakage of the working medium and the ingress of external dust and foreign bodies. Once the sealing medium leaks, the personal safety can be directly endangered, and huge economic losses are brought. Most seal leakage incidents are associated with wear failure of rubber seals. Therefore, the wear failure of the sealing element is one of the key common technical problems of the sealing system of the mechanical equipment. Severe adhesive wear occurs when rubber is placed in service with metal fittings, greatly reducing the actual service life of the rubber seal while affecting system safety and accuracy. Therefore, it is important to avoid the adhesion effect between the rubber seal and the fitting and to improve the wear resistance of the rubber. The main method for enhancing the wear resistance of rubber is to use grease lubrication between the rubber body and the metal fittings to reduce the interfacial adhesion effect. But the friction heat effect can cause fatal damage to the viscosity, the structure and the like of the oil, thereby causing the lubrication failure of the oil. Therefore, it is urgent to search for effective methods for improving abrasion resistance of rubber.
Surface solid lubricant film modification is clearly the most desirable method considering that material wear always occurs on the surface and subsurface of the material. Previous attempts to improve wear resistance have been made with metal and ceramic films, but the metal film still suffers from severe adhesive wear of the seal pair, while the ceramic film causes gouging friction on the mating parts resulting in seal leakage. The carbon film has good chemical compatibility with rubber, does not change the intrinsic properties (such as flexibility, tensile strength and the like) of a rubber substrate, and is an ideal coating for modifying the surface wear resistance of the rubber. The contact between the modified rubber and the metal matching pair is converted into the friction between the carbon film and the metal matching pair, so that the direct contact between the rubber substrate and the friction pair is avoided, and the adhesive wear of the rubber is effectively reduced.
However, the rubber expands and contracts by heat before and after the film deposition, so that cracks (discontinuous structures) are spontaneously formed on the surface of the carbon film. In actual service, the discontinuous structure weakens the mechanical properties of the film, and the crack of the film is sufficiently opened under the action of frictional stress, so that the friction pair still can contact the rubber substrate to cause adhesive wear. Therefore, how to realize continuous growth of the carbon film on the surface of the rubber and ensure complete coverage and deposition of the carbon film is the key to realizing ultrahigh wear resistance of the rubber.
Disclosure of Invention
Aiming at the service defects of the existing discontinuous carbon film on the rubber surface, the invention aims to provide a preparation method of an ultrahigh wear-resistant rubber-based composite material with a continuous structure surface carbon film, so as to realize continuous and full coverage of the surface carbon film on the rubber surface, thereby improving the friction performance of the rubber-based composite material.
The method for preparing the ultra-high wear-resistant rubber-based composite material comprises the steps of pre-cleaning a rubber substrate, carrying out micro-nano texture, cleaning and activating the rubber substrate with the micro-nano texture, and depositing a carbon film on the surface of the rubber substrate to obtain the ultra-high wear-resistant rubber-based composite material with a continuous structure.
The rubber substrate is selected from any one of fluororubber, nitrile rubber and silicon rubber. The surface smoothness Ra of the rubber substrate is less than 200nm, and the thickness is 0.5-2 mm.
The micro-nano texture is performed by laser. And during laser texturing, adjusting the laser incidence angle to be 60-75 degrees, and performing micro-nano texturing of an inverted pyramid-like structure on the surface of the rubber substrate. In the rubber substrate with the surface texture, the texture area accounts for 5-20% of the total surface area.
In order to ensure the continuity of the apparent appearance of the rubber substrate and the deposited film, the rubber substrate is mechanically stretched to be in an expansion state during laser texturing. Preferably, the expansion rate is 50% to 70% (i.e., the rubber substrate is stretched to 150% to 170%).
The carbon film is deposited by vacuum sputtering. The specific process comprises the following steps: adopting a graphite target, wherein the target base distance is 8-12 cm, the target current is 1.5A, the argon flow is 45-60 sccm, and Ar/CH4The flow ratio of (A) is 1.5/1, the substrate bias is-700V, the air pressure is 1-1.5 Pa, the duty ratio is 40-45%, the frequency is 60-70 KHz, and the deposition time is 120-150 min.
Before the carbon film is deposited, the rubber substrate is preheated properly to expand, so that the film can be deposited on each part (top, bottom and side) of the texture structure, thereby ensuring the continuity of the film.
Before the carbon film is deposited, nitrogen plasma and argon plasma are sequentially used for bombarding the rubber matrix so as to realize micro-nano cleaning and surface activation of the rubber surface and further improve the bonding strength of the film and the substrate. Wherein, the nitrogen plasma bombardment conditions are as follows: the nitrogen flow is 200sccm, the pressure in the cavity is 4-6 Pa, the pulse bias voltage is-700V, the duty ratio is 50-60%, and the frequency is 60-70 KHz; the argon plasma bombardment conditions were: the argon flow is 300sccm, the pressure in the chamber is 4-6 Pa, the pulse bias is-1200V, the duty ratio is 50-60%, and the frequency is 60-70 KHz.
Fig. 1 is a schematic structural view of a carbon film surface texture 'reverse pyramid-like': (a) in the texture, (b) the texture is finished, (c) in the film deposition, and (d) a finished product after the film deposition is finished. FIG. 1a is a schematic view of a surface texture of a rubber substrate in a stretched state; FIG. 1b is a cross-sectional view of the rubber substrate in a normal state after texturing. FIG. 1c is a schematic cross-sectional view of the thin film deposition process, wherein preheating is performed before thin film deposition, so that the texture tissue can be ensured to be completely opened, and the thin film can be deposited in an omnibearing manner. FIG. 1d is a schematic view of the sample interface in a normal state after the thin film deposition is finished. The spontaneous formation of film cracks is due to the extrusion deformation of the film during rubber expansion and contraction. After the rubber surface is subjected to the texture, the expansion and contraction of the rubber surface are mainly reflected in the separation and the closure of the texture, and the extrusion deformation of the film cannot be caused. Therefore, the film is a continuous structure and spontaneous microcracks do not occur.
Performance of two, super high wear-resisting rubber base composite material
1. Bonding strength
The flexibility of the rubber/carbon film of the present invention was evaluated by a repeated bending method. The results show that: after the sample is repeatedly bent for 20-30 times, the carbon film on the surface of the rubber does not fall off, and the carbon film on the surface of the rubber prepared by the method has good flexibility and excellent binding force.
2. Frictional properties
The abrasion resistance of the rubber member/carbon film of the present invention was evaluated by a frictional abrasion tester. The friction conditions were: ball-disk spin mode, normal load 15N, friction couple is commercial φ 6mm GCr15 steel ball, test environment is atmospheric. FIG. 2 is a graph showing the wear life of nitrile rubber, its surface conventional carbon film and the composite material of the present invention. The results show that: the nitrile rubber bare piece has a stable coefficient of friction of 0.8, the time required for the surface conventional carbon film coefficient of friction to reach 0.8 (lubrication failure) is about 4000 minutes, while the time required for the surface conventional carbon film coefficient of friction to reach 0.8 is about 8000 minutes (friction mileage is about 60 km), indicating that it has excellent wear resistance characteristics.
In conclusion, compared with the prior art, the preparation method has the following advantages:
1. the rubber surface carbon film designed by the invention is of a continuous structure, and the surface of the rubber surface carbon film does not have spontaneously formed microcracks. Therefore, in the actual service process of the rubber sealing element, the friction pair can not contact the rubber substrate all the time, so that the adhesive wear of the rubber is fundamentally avoided, and the ultrahigh wear-resisting property of the rubber element is ensured;
2. the rubber surface texture structure designed by the invention is an inverted pyramid-like structure, has certain stress tolerance and can ensure that the carbon film cannot fall off along with the deformation of the rubber matrix. Meanwhile, the edge angle of the structure is an arc angle, so that sharp collision between a friction couple and the edge angle edge can be effectively avoided, and the friction coefficient of the film is effectively reduced; in addition, the structure can be used as a micro oil reservoir, and the purpose of ultrahigh wear resistance of the rubber surface is achieved through solid-liquid composite lubrication;
3. the carbon film composite material prepared on the surface of the rubber has the characteristics of low friction coefficient, ultrahigh wear resistance, long service life and the like, has good flexibility and excellent binding force on the surface of the rubber, and can be used for preparing a dynamic sealing element; and the preparation process is simple, and large-area industrial application is easy to realize.
Drawings
Fig. 1 is a schematic structural view of a carbon film surface texture 'reverse pyramid-like': (a) in the texture, (b) the texture is finished, (c) in the film deposition, and (d) a finished product after the film deposition is finished.
FIG. 2 is a graph showing the wear life of nitrile rubber, its surface conventional carbon film and the composite material of the present invention.
Detailed Description
The preparation and properties of the ultra-high wear-resistant rubber-based composite material of the invention are further described by the following specific examples.
Example 1
(1) Pre-cleaning: cutting black butadiene-acrylonitrile rubber sheet (surface smoothness Ra < 200nm, thickness 2 mm) of 300 × 300 × 2mm into 30 × 30mm2And pre-cleaning the rubber sheet: soaking the rubber sheet in 60 deg.C soap water solution, and ultrasonic cleaning for 30min to remove oil and dirt on the rubber surface; then taking out and soaking in distilled water at 90-95 ℃ for ultrasonic cleaning for 30min to remove possible residual soap water solution; finally, drying the rubber is dried by dry nitrogen gas. The above process is repeated for 5 times;
(2) laser texturing: after the rubber is cooled to room temperature, the rubber is clamped on a stretching clamp and placed on a laser tray, and the knob is rotated to stretch the rubber to 150%. Adjusting the laser incidence angle to 60 degrees, adopting excimer laser output by an ultraviolet band to texture the surface of the rubber to form an inverted pyramid-like structure, then taking down the rubber substrate from a stretching clamp, and placing the rubber substrate in a magnetron sputtering vacuum cavity of high-vacuum multifunctional magnetron sputtering ion coating equipment;
(3) cleaning and activating the rubber sheet: closing the vacuum chamber, and vacuumizing the vacuum chamber to less than or equal to 1.0 x 10–3Pa. And introducing nitrogen with the flow of 200sccm into the vacuum cavity, wherein the air pressure in the cavity is 4-6 Pa, turning on a high-power pulse bias power supply, and performing bombardment treatment on the rubber by using nitrogen plasma, wherein the bias voltage is-700V, the duty ratio is 55%, the frequency is 60KHz, and the treatment time is 35 min. Then, pumping out clean nitrogen, introducing argon of 300sccm, adjusting the pulse bias voltage to-1200V, and performing bombardment cleaning for 25min under the unchanged other conditions;
(4) depositing a carbon film: heating the cavity to 60 ℃, and then introducing 45sccm Ar into the vacuum cavity2Gas and 30sccm CH4And (5) turning on a sputtering power supply to sputter the graphite target by gas, wherein the target current is 1.5A. Meanwhile, a high-power pulse bias power supply is started, the substrate bias voltage is-700V, the duty ratio is 45%, the frequency is 60KHz, the deposition pressure is kept at about 1Pa, the deposition time is 120min, and the temperature is kept at about 100 ℃ when the deposition is finished. And after the deposition is finished, taking out the sample after the temperature in the vacuum cavity is cooled to room temperature, thus obtaining the ultrahigh wear-resistant rubber-based composite material sample. The time required for the friction coefficient of the rubber-based composite material to reach 0.8 (coefficient of friction value of a bare part) is about 7800 minutes (mileage due to friction)About 59 km).
Example 2
(1) Pre-cleaning: cutting 300 × 300 × 2mm silicone rubber plate (surface finish Ra < 200nm, thickness 2 mm) into 30 × 30mm2The rubber sheet of (1) is subjected to precleaning, and the precleaning step is the same as that of the example 1;
(2) laser texturing: after the rubber sheet is cooled to room temperature, the rubber sheet is clamped on a stretching clamp and placed on a laser tray, and the knob is rotated to stretch the rubber to 170%. The laser incident angle was adjusted to 75 °, which was the same as in example 1;
(3) cleaning and activating the rubber sheet: the same as example 1;
(4) depositing a carbon film: heating the cavity to 120 ℃, and then introducing 45sccm Ar into the vacuum cavity2And 30sccm CH4And (5) turning on a sputtering power supply to sputter the graphite target by gas, wherein the target current is 1.5A. Meanwhile, a high-power pulse bias power supply is started, the bias voltage is-700V, the duty ratio is 45%, the frequency is 60KHz, the deposition pressure is kept at 1.0Pa, the deposition time is 120min, and the temperature is kept at 160 ℃ when the deposition is finished. And after the deposition is finished, taking out the sample after the temperature in the vacuum cavity is cooled to room temperature, thus obtaining the ultrahigh wear-resistant rubber-based composite material sample. The time required for the friction coefficient of the rubber-based composite material to reach 0.8 (the coefficient of friction of the bare part) is about 8100 minutes (the friction mileage is about 61 km).
Example 3
(1) Pre-cleaning: cutting 300 × 300 × 2mm fluororubber sheet (surface smoothness Ra < 200nm, thickness 1 mm) into 30 × 30mm2The rubber sheet of (1) is subjected to precleaning, and the precleaning step is the same as that of the example 1;
(2) laser texturing: the same as example 1;
(3) cleaning and activating the rubber sheet: and introducing nitrogen with the flow of 200sccm into the vacuum cavity, wherein the air pressure in the cavity is 4-6 Pa, turning on a high-power pulse bias power supply, and performing bombardment treatment on the rubber by using nitrogen plasma, wherein the bias voltage is-700V, the duty ratio is 55%, the frequency is 60KHz, and the treatment time is 120 min. Then, pumping out clean nitrogen, introducing 300sccm argon, adjusting the pulse bias voltage to-1200V, and performing bombardment cleaning for 60min under the unchanged other conditions;
(4) depositing a carbon film: after the treatment is finished, the cavity is heated to 160 ℃, and then 45sccm Ar is introduced into the vacuum cavity2And 30sccm CH4And (5) turning on a sputtering power supply to sputter the graphite target by gas, wherein the target current is 1.5A. Meanwhile, a high-power pulse bias power supply is started, the bias voltage is-700V, the duty ratio is 45%, the frequency is 60KHz, the deposition pressure is kept at 1.0Pa, the deposition time is 150min, and the temperature is kept at 210 ℃ when the deposition is finished. And after the deposition is finished, taking out the sample after the temperature in the vacuum cavity is cooled to room temperature, thus obtaining the ultrahigh wear-resistant rubber-based composite material sample. The time required for the friction coefficient of the rubber-based composite material to reach 0.8 (the coefficient of friction value of a bare part) is about 8000 minutes (the friction mileage is about 60 km).

Claims (5)

1. A preparation method of an ultrahigh wear-resistant rubber-based composite material with a continuous structure surface carbon film comprises the steps of pre-cleaning a rubber substrate, carrying out micro-nano texture, sequentially carrying out bombardment cleaning and activation treatment on the rubber substrate with the micro-nano texture by using nitrogen plasma and argon plasma, and depositing a carbon film on the surface of the rubber substrate, thereby obtaining the ultrahigh wear-resistant rubber-based composite material with the continuous structure surface carbon film;
the rubber substrate is selected from any one of fluororubber, nitrile rubber and silicon rubber; the surface smoothness Ra of the rubber substrate is less than 200nm, and the thickness is 0.5-2 mm;
the micro-nano texture is carried out by adopting laser, the incident angle of the laser is adjusted to be 60-75 degrees, and the micro-nano texture with an inverted pyramid-like structure is carried out on the surface of the rubber substrate;
the carbon film is deposited by vacuum sputtering: adopting a graphite target, wherein the target base distance is 8-12 cm, the target current is 1.5A, the argon flow is 45-60 sccm, and Ar/CH4The flow ratio of (A) is 1.5/1, the substrate bias is-700V, the air pressure is 1-1.5 Pa, the duty ratio is 40-45%, the frequency is 60-70 KHz, and the deposition time is 120-150 min.
2. The method for preparing the ultra-high wear-resistant rubber-based composite material with the carbon film on the surface with the continuous structure as in claim 1, wherein the method comprises the following steps: and mechanically stretching the rubber substrate to 150-170% during laser texturing.
3. The method for preparing the ultra-high wear-resistant rubber-based composite material with the carbon film on the surface with the continuous structure as in claim 1, wherein the method comprises the following steps: the nitrogen plasma bombardment conditions were: the nitrogen flow is 200sccm, the pressure in the cavity is 4-6 Pa, the pulse bias voltage is-700V, the duty ratio is 50-60%, and the frequency is 60-70 KHz.
4. The method for preparing the ultra-high wear-resistant rubber-based composite material with the carbon film on the surface with the continuous structure as in claim 1, wherein the method comprises the following steps: the argon plasma bombardment conditions were: the argon flow is 300sccm, the pressure in the chamber is 4-6 Pa, the pulse bias is-1200V, the duty ratio is 50-60%, and the frequency is 60-70 KHz.
5. The method for preparing the ultra-high wear-resistant rubber-based composite material with the carbon film on the surface with the continuous structure as in claim 1, wherein the method comprises the following steps: before depositing the carbon film, the rubber substrate is preheated to expand.
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