High-wear-resistance sealing material used in field of mechanical automation and preparation method of high-wear-resistance sealing material

Abstract

The invention discloses a high-wear-resistance sealing material for the field of mechanical automation and a preparation method of the high-wear-resistance sealing material, and relates to the technical field of high-wear-resistance sealing materials. The invention provides an innovative solution based on multiphase structure design and molecular engineering. Firstly, an ethylene propylene diene monomer and high-side vinyl solution polymerized styrene-butadiene rubber blending system is adopted, and a two-phase structure with remarkable crosslinking density difference is constructed through an in-situ polymerization technology: highly crosslinked rubber particles are uniformly dispersed in another rubber continuous phase; according to the design, the advantages and properties of the two kinds of rubber are fused, the comprehensive mechanical property of the material is remarkably improved through the phase interface synergistic effect, and meanwhile good flexibility is kept in the low-temperature environment. Secondly, the anti-aging agent is grafted to a macromolecular chain through an epoxy-amino addition reaction, a specific functional group is introduced through click chemistry, and the macromolecular anti-aging agent with a multiple hydrogen bond network is constructed.

Description

Technical Field

[0001] The present invention relates to the technical field of high-wear-resistant sealing materials, in particular to a high-wear-resistant sealing material for use in the field of mechanical automation and a preparation method thereof. Background Art

[0002] In the field of mechanical sealing technology, key equipment such as centrifugal pumps, centrifuges, reactors and compressors widely rely on mechanical sealing systems to achieve fluid sealing. Although mechanical seals have become the mainstream technology due to their advantages such as low leakage and long life, traditional sealing materials still face multiple challenges under complex working conditions. On the one hand, sealing materials with a single rubber as the main body generally have insufficient wear resistance. For example, some rubber materials are prone to surface wear under high-speed friction conditions, while others are resistant to aging but have significant brittleness at low temperatures. On the other hand, traditional small molecule plasticizers are easily precipitated from the material due to temperature fluctuations or solvent erosion during long-term use, resulting in increased hardness of the seal, loss of elasticity, and even causing medium contamination. In addition, as the main reinforcing filler, the dispersion uniformity of carbon black directly affects the mechanical properties of the material, but traditional physical blending methods are difficult to achieve ideal dispersion effects, resulting in stress concentration and early failure.

[0003] In response to the above pain points, this application proposes an innovative solution based on multiphase structural design and molecular engineering. First, a blend system of EPDM rubber and high-side vinyl solution-polymerized styrene-butadiene rubber is used to construct a two-phase structure with significantly different crosslinking densities through in-situ polymerization technology: highly crosslinked rubber particles are evenly dispersed in another rubber continuous phase. This design not only combines the advantages of the two rubbers, but also significantly improves the comprehensive mechanical properties of the material through the synergistic effect of the phase interface, while maintaining good flexibility in low temperature environments. Secondly, the antioxidant is grafted onto the macromolecular chain through the epoxy-amino addition reaction, and then specific functional groups are introduced by click chemistry to construct a macromolecular antioxidant with a multiple hydrogen bond network. This modification greatly enhances the antioxidant's resistance to migration, and at the same time, the grafted active groups form a chemical interaction with the carbon black surface, significantly improving the carbon black dispersion, thereby improving the material's tear resistance and dynamic fatigue life. Through the integration of the above technologies, this solution provides a new material solution for mechanical seals under extreme working conditions that combines high wear resistance, low temperature resistance and aging resistance. Summary of the Invention

[0004] The object of the present invention is to provide a high wear-resistant sealing material for use in the field of mechanical automation and a preparation method thereof, so as to solve the problems existing in the prior art.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0006] A high-wear-resistant sealing material for use in the field of mechanical automation and a preparation method thereof. The material comprises the following components, calculated by weight: 100 to 110 parts of composite rubber, 30 to 40 parts of carbon black, 5 to 10 parts of zinc oxide, 1 to 2 parts of stearic acid, 1 to 3 parts of sulfur, 1 to 3 parts of an accelerator, and 1 to 3 parts of a migration-resistant antioxidant.

[0007] As an optimization, the composite rubber is blended with EPDM rubber and solution polymerized styrene butadiene rubber, wherein the mass ratio between the EPDM rubber and the solution polymerized styrene butadiene rubber is 1:1 to 4:1.

[0008] As an optimization, the accelerator is accelerator CZ or accelerator NS.

[0009] As an optimization, the modified antioxidant is prepared by first connecting oleic acid glycidyl ester with antioxidant 4020 through an epoxy-amino addition reaction, and then performing a click chemistry reaction with 4-phenyl-3H-1,2,4-triazolin-3,5-dione and the double bond in oleic acid glycidyl ester to form a migration-resistant antioxidant.

[0010] A preparation method for a high-wear-resistant sealing material for the field of mechanical automation is applicable to any of the above-mentioned high-wear-resistant sealing materials, comprising the following preparation method: weighing materials according to the above-mentioned mass fractions, uniformly blending EPDM rubber and solution-polymerized styrene-butadiene rubber in an open mill, then adding 0.1phr of a peroxide cross-linking agent, plasticizing for 1-2 minutes, subsequently adding zinc oxide and stearic acid, mixing for 2-3 minutes, then adding a migration-resistant antioxidant and mixing for 2-3 minutes, then adding carbon black in batches, and producing sheets after the carbon black and rubber are evenly mixed. After the sheets are produced, they are transferred to a hot roller at a temperature of 145-155°C for heat treatment for 5-6 minutes, and then allowed to cool after the heat treatment is completed. After cooling, an accelerator and sulfur are added and mixed, and the mixing is uniform to produce sheets to prepare the high-wear-resistant sealing material.

[0011] As an optimization, the peroxide cross-linking agent is dicumyl peroxide.

[0012] As an optimization, the migration-resistant antioxidant includes the following preparation steps: adding a modified antioxidant to tetrahydrofuran with a mass of 16 to 18 times that of the modified antioxidant, then dropwise adding a 4-phenyl-3H-1,2,4-triazolidine-3,5-dione solution with a mass of 6 to 7 times that of the modified antioxidant, reacting at a temperature of 25 to 35° C. for 4.5 to 5.5 hours after the dropwise addition is completed, transferring the solution to methanol for precipitation, then taking out the product and washing it with methanol for 3 to 5 times, and vacuum drying it at a temperature of 45 to 55° C. after washing to obtain the migration-resistant antioxidant.

[0013] As an optimization, the modified antioxidant includes the following preparation steps: weighing oleic acid glycidyl ester and antioxidant 4020 according to a mass ratio of 1.1 to 1.3, adding 0.6% to 0.8% of salicylic acid by mass of oleic acid glycidyl ester after mixing evenly, stirring evenly after the addition, and reacting at a temperature of 140 to 150° C. for 4.5 to 5.5 hours. After the reaction is completed, washing with sodium bicarbonate aqueous solution for 3 to 55 times, and then washing with deionized water for 3 to 5 times, adding petroleum ether after washing, and vacuum drying at a temperature of 145 to 155° C. after the rotary evaporation is completed to obtain the modified antioxidant.

[0014] As an optimization, the mass fraction of the sodium bicarbonate aqueous solution is 3% to 5%.

[0015] As an optimization, the preparation process of the 4-phenyl-3H-1,2,4-triazolidine-3,5-dione solution is as follows: 4-phenyl-3H-1,2,4-triazolidine-3,5-dione is added to tetrahydrofuran at a mass ratio of 1:22 to 25 and stirred evenly to prepare a 4-phenyl-3H-1,2,4-triazolidine-3,5-dione solution for use.

[0016] Compared with the prior art, the beneficial effects achieved by the present invention are:

[0017] The present application uses EPDM rubber and solution-polymerized styrene-butadiene rubber as the main body of the high-wear-resistant sealing material, constructs this unevenly cross-linked multiphase structure through in-situ polymerization, blends EPDM rubber with solution-polymerized styrene-butadiene rubber with a high side vinyl content, and cross-links them with peroxide to form a two-phase structure with a huge difference in cross-linking density. By dispersing highly cross-linked rubber particles in normally cross-linked rubber, the protection of the low-cross-linked rubber allows the highly cross-linked rubber to undergo a high degree of deformation orientation, thereby making the blend exhibit even better performance;

[0018] By adding plasticizers, the glass transition temperature is lowered and the low-temperature resistance of the blend is improved. Traditional plasticizers are mostly small molecules, which makes them easy to precipitate. After precipitation, the mechanical properties and oil resistance will also be reduced. Therefore, this application constructs a macromolecular antioxidant by connecting it with the antioxidant 4020 through an epoxy-amino addition reaction and then conducting a click chemistry reaction with 4-phenyl-3H-1,2,4-triazolin-3,5-dione, thereby enhancing the migration resistance of the antioxidant. The ureaazole group is also grafted onto the macromolecular antioxidant, and the active ureaazole group can produce intermolecular or intramolecular hydrogen bond interactions. Under heating or oxidation, it will lose the proton on the NH group to form a relatively stable free radical and interact with carbon black, thereby improving the dispersibility of carbon black. DETAILED DESCRIPTION

[0019] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0020] Example 1

[0021] S1. Weigh glycidyl oleate and antioxidant 4020 in a mass ratio of 1.1, mix well, add 0.6% salicylic acid based on the mass of glycidyl oleate, stir well after addition, and react at 140°C for 4.5 hours. After the reaction, wash three times with sodium bicarbonate aqueous solution, then wash three times with deionized water, add petroleum ether and evaporate in a rotary evaporation, and after the rotary evaporation, vacuum dry at 145°C to obtain a modified antioxidant; the mass fraction of the sodium bicarbonate aqueous solution is 3%;

[0022] S2, the modified antioxidant is added to 16 times the mass of the modified antioxidant in tetrahydrofuran, and then 6 times the mass of the modified antioxidant is added dropwise to form a 4-phenyl-3H-1,2,4-triazolidine-3,5-dione solution. After the addition is completed, the reaction is carried out at a temperature of 25 ° C for 4.5 hours. After the reaction is completed, the solution is transferred to methanol to precipitate the glue, and then the product is taken out and washed with methanol 3 times. After washing, it is vacuum dried at a temperature of 45 ° C to obtain a migration-resistant antioxidant; according to a mass ratio of 1:22, 4-phenyl-3H-1,2,4-triazolidine-3,5-dione is added to tetrahydrofuran and stirred evenly to prepare a 4-phenyl-3H-1,2,4-triazolidine-3,5-dione solution for standby use;

[0023] S3. Weigh the following materials in parts by mass: 100 parts of composite rubber, 30 parts of carbon black, 5 parts of zinc oxide, 1 part of stearic acid, 1 part of sulfur, 1 part of accelerator CZ, and 1 part of migration-resistant antioxidant; the composite rubber is blended with EPDM rubber and solution-polymerized styrene-butadiene rubber, wherein the mass ratio between EPDM rubber and solution-polymerized styrene-butadiene rubber is 1:1; weigh the materials in the above-mentioned parts by mass, blend the EPDM rubber and solution-polymerized styrene-butadiene rubber evenly in an open mill, and then add 0.1phr of peroxide crosslinking agent. , plasticize for 1 minute, then add zinc oxide and stearic acid, mix for 2 minutes, then add migration-resistant antioxidant for mixing, mixing time is 2 minutes, then add carbon black in batches, after the carbon black and rubber are evenly mixed, sheet out, after sheet out, transfer to a hot roller with a temperature of 145 ° C for heat treatment for 5 minutes, let it stand and cool after the heat treatment is completed, add accelerator and sulfur after cooling, mix evenly and sheet out to prepare a high wear-resistant sealing material; the peroxide cross-linking agent is diisopropyl benzene peroxide.

[0024] Example 2

[0025] S1. Weigh glycidyl oleate and antioxidant 4020 in a mass ratio of 1.2, mix well, add 0.7% salicylic acid based on the mass of glycidyl oleate, stir well after addition, and react at a temperature of 145°C for 5 hours. After the reaction is completed, wash with sodium bicarbonate aqueous solution 29 times, then wash with deionized water 4 times, add petroleum ether and rotary evaporate after washing, and vacuum dry at a temperature of 150°C to prepare a modified antioxidant; the mass fraction of the sodium bicarbonate aqueous solution is 4%;

[0026] S2, the modified antioxidant is added to 17 times the mass of the modified antioxidant in tetrahydrofuran, and then 6.5 times the mass of the modified antioxidant is added dropwise to a 4-phenyl-3H-1,2,4-triazolidine-3,5-dione solution. After the addition is completed, the reaction is carried out at a temperature of 30°C for 5h. After the reaction is completed, the solution is transferred to methanol to precipitate the glue, and then the product is taken out and washed with methanol 4 times. After washing, it is vacuum dried at a temperature of 50°C to obtain a migration-resistant antioxidant; according to a mass ratio of 1:23.5, 4-phenyl-3H-1,2,4-triazolidine-3,5-dione is added to tetrahydrofuran and stirred evenly to prepare a 4-phenyl-3H-1,2,4-triazolidine-3,5-dione solution for standby use;

[0027] S3, weighed by mass: 105 parts of composite rubber, 35 parts of carbon black, 7.5 parts of zinc oxide, 1.5 parts of stearic acid, 2 parts of sulfur, 2 parts of accelerator CZ, 2 parts of migration-resistant antioxidant; the composite rubber is blended with EPDM rubber and solution-polymerized styrene-butadiene rubber, wherein the mass ratio between EPDM rubber and solution-polymerized styrene-butadiene rubber is 2.5:1; weighed the materials according to the above mass parts, blended the EPDM rubber and solution-polymerized styrene-butadiene rubber evenly in an open mill, and then added 0.1phr of peroxide crosslinking agent, The process is followed by plasticizing for 1.5 minutes, followed by adding zinc oxide and stearic acid, and mixing for 2.5 minutes, followed by adding a migration-resistant antioxidant for mixing for 2.5 minutes, and then adding carbon black in batches. After the carbon black and the rubber are evenly mixed, sheets are produced, and the sheets are transferred to a hot roller at a temperature of 150°C for heat treatment for 5.5 minutes. After the heat treatment is completed, the sheet is allowed to stand and cool, and after cooling, an accelerator and sulfur are added for mixing, and the sheet is produced evenly to prepare a highly wear-resistant sealing material. The peroxide crosslinking agent is diisopropylbenzene peroxide.

[0028] Example 3

[0029] S1. Weigh glycidyl oleate and antioxidant 4020 in a mass ratio of 1.3, mix well, add 0.8% salicylic acid based on the mass of glycidyl oleate, stir well after addition, and react at a temperature of 150°C for 5.5 hours. After the reaction is completed, wash with sodium bicarbonate aqueous solution 55 times, then wash with deionized water 5 times, add petroleum ether and rotary evaporate, and after rotary evaporation, vacuum dry at a temperature of 155°C to obtain a modified antioxidant; the mass fraction of the sodium bicarbonate aqueous solution is 5%;

[0030] S2, the modified antioxidant is added to 18 times the mass of the modified antioxidant in tetrahydrofuran, and then 7 times the mass of the modified antioxidant is added dropwise to form 4-phenyl-3H-1,2,4-triazolidine-3,5-dione solution. After the addition is completed, the reaction is carried out at a temperature of 35 ° C for 5.5 hours. After the reaction is completed, the solution is transferred to methanol to precipitate the glue, and then the product is taken out and washed with methanol 5 times. After washing, it is vacuum dried at a temperature of 55 ° C to obtain a migration-resistant antioxidant; according to a mass ratio of 1: 25, 4-phenyl-3H-1,2,4-triazolidine-3,5-dione is added to tetrahydrofuran and stirred evenly to prepare 4-phenyl-3H-1,2,4-triazolidine-3,5-dione solution for standby use;

[0031] S3. Weigh the following materials in parts by mass: 110 parts of composite rubber, 40 parts of carbon black, 10 parts of zinc oxide, 2 parts of stearic acid, 3 parts of sulfur, 3 parts of accelerator CZ, and 3 parts of migration-resistant antioxidant; the composite rubber is blended with EPDM rubber and solution-polymerized styrene-butadiene rubber, wherein the mass ratio between EPDM rubber and solution-polymerized styrene-butadiene rubber is 4:1; weigh the materials in the above-mentioned parts by mass, blend the EPDM rubber and solution-polymerized styrene-butadiene rubber evenly in an open mill, and then add 0.1phr of peroxide crosslinking agent. , plasticize for 2 minutes, then add zinc oxide and stearic acid, mix for 3 minutes, then add migration-resistant antioxidant for mixing, mixing time is 3 minutes, then add carbon black in batches, after the carbon black and rubber are evenly mixed, sheet out, after sheet out, transfer to a hot roller at a temperature of 155 ° C for heat treatment for 6 minutes, let it stand and cool after the heat treatment is completed, add accelerator and sulfur after cooling, mix evenly and sheet out to prepare a high wear-resistant sealing material; the peroxide cross-linking agent is diisopropyl benzene peroxide.

[0032] Example 4

[0033] The only difference from Example 2 is that step S3: "migration-resistant antioxidant" is changed to "modified antioxidant";

[0034] Example 5

[0035] The only difference from Example 2 is that step S3: "anti-migration antioxidant" is changed to "anti-aging agent 4020";

[0036] Example 6

[0037] The only difference from Example 2 is step S3: weighing by mass: 105 parts of EPDM rubber, 35 parts of carbon black, 7.5 parts of zinc oxide, 1.5 parts of stearic acid, 2 parts of sulfur, 2 parts of accelerator CZ, and 2 parts of migration-resistant antioxidant; weighing the materials according to the above mass parts, blending the EPDM rubber evenly in an open mill, then adding 0.1phr of peroxide crosslinking agent, plasticating for 1.5 minutes, then adding zinc oxide and stearic acid, mixing for 2.5 minutes, then adding the migration-resistant antioxidant for mixing, mixing for 2.5 minutes, and then adding carbon black in batches. After the carbon black and the rubber are evenly mixed, the sheet is produced, and after the sheet is produced, it is transferred to a hot roller at a temperature of 150°C for heat treatment for 5.5 minutes. After the heat treatment is completed, it is allowed to cool. After cooling, the accelerator and sulfur are added and mixed. The mixing is uniform and the sheet is produced to prepare a high wear-resistant sealing material; the peroxide crosslinking agent is diisopropyl benzene peroxide;

[0038] Example 7

[0039] The only difference from Example 2 is step S3: weighing by mass: 105 parts of solution-polymerized styrene-butadiene rubber, 35 parts of carbon black, 7.5 parts of zinc oxide, 1.5 parts of stearic acid, 2 parts of sulfur, 2 parts of accelerator CZ, and 2 parts of migration-resistant antioxidant; weighing the materials according to the above mass parts, blending the solution-polymerized styrene-butadiene rubber evenly in an open mill, then adding 0.1phr of peroxide crosslinking agent, plasticating for 1.5 minutes, then adding zinc oxide and stearic acid, mixing for 2.5 minutes, then adding the migration-resistant antioxidant for mixing, mixing for 2.5 minutes, and then adding carbon black in batches. After the carbon black and the rubber material are evenly mixed, the sheet is produced, and after the sheet is produced, it is transferred to a hot roller at a temperature of 150°C for heat treatment for 5.5 minutes. After the heat treatment is completed, it is allowed to cool. After cooling, the accelerator and sulfur are added and mixed. The sheet is evenly produced to prepare a high wear-resistant sealing material; the peroxide crosslinking agent is diisopropyl benzene peroxide;

[0040] Mechanical properties testing

[0041] The high wear-resistant sealing materials prepared in Examples 1 to 7 were cut into dumbbell-shaped specimens using a pneumatic slicer, and the tensile properties of the samples were tested using a universal material testing machine at a tensile speed of 500 mm / min.

[0042] The hardness of the high wear-resistant sealing materials prepared in Examples 1 to 7 was tested using a BS61 I hardness tester; the test results are shown in Table 1 below.

[0043] Table 1

[0044] Sample Tensile strength / Mpa Elongation at break / % Shore hardness Example 1 19.1 480 68 Example 2 18.8 476 64 Example 3 18.6 469 61 Example 4 16.4 422 57 Example 5 16.2 424 53 Example 6 3.4 104 24 Example 7 8.1 107 15

[0045] As can be seen from Table 1, Examples 1 to 3 exhibit good mechanical properties, and all indicators thereof perform well. However, the decline in Examples 4 and 5 is mainly due to the fact that they are not grafted with ureaazole groups, resulting in poor dispersion of fillers such as carbon black, which leads to a decline in the mechanical properties of the final materials. In Examples 6 and 7, since only monomer rubber is used for preparation, it can be seen that the mechanical properties of the monomer rubber decline sharply. This is because the monomer rubber does not form an uneven cross-linked network.

[0046] Thermal oxygen aging protection test

[0047] The test was conducted in accordance with the requirements of GB / T3512-2014. The high-wear-resistant sealing materials prepared in Examples 1 to 7 were cut into dumbbell-shaped specimens required for the tensile test. The experimental specimens were vertically hung in an aging oven at an aging temperature of 100°C. The aging time of the samples was recorded, and the mechanical properties before and after were measured. The mechanical property retention rate was calculated. The mechanical property retention rate calculation formula is: (parameters after aging / parameters before aging) 100%; the test results are shown in Table 2 below;

[0048] Table 2

[0049]

[0050] As can be seen from Table 2, Examples 1 to 4 exhibit good resistance to thermal oxidative aging, and all of their indicators perform well. The reason for the rapid decline in Example 5 is mainly due to the fact that the antioxidant 4020 therein is not a small molecule and is easy to precipitate. After precipitation, its various properties decline rapidly; and the slow decline rate in Example 7 is mainly due to the fact that the solution-polymerized styrene-butadiene rubber itself contains a large number of double bonds, which construct a tight cross-linked network under the promotion of the cross-linking agent, thereby giving it a natural advantage over EPDM rubber in terms of anti-aging performance.

[0051] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed therein. Any reference in a claim should not be construed as limiting the claim to which it relates.

Claims

1. A high wear-resistant sealing material for use in the field of mechanical automation and a preparation method thereof, characterized in that: By mass, The invention comprises the following components: 100-110 parts of composite rubber, 30-40 parts of carbon black, 5-10 parts of zinc oxide, 1-2 parts of stearic acid, 1-3 parts of sulfur, 1-3 parts of accelerator and 1-3 parts of migration-resistant antioxidant.

2. The high wear-resistant sealing material for use in the field of mechanical automation according to claim 1, characterized in that: The composite rubber is blended with EPDM rubber and solution polymerized styrene-butadiene rubber, wherein the mass ratio of the EPDM rubber to the solution polymerized styrene-butadiene rubber is 1:1 to 4:

1.

3. The high wear-resistant sealing material for use in the field of mechanical automation according to claim 1, characterized in that: The accelerator is accelerator CZ or accelerator NS.

4. The high wear-resistant sealing material for use in the field of mechanical automation according to claim 1, characterized in that: The modified antioxidant is prepared by first connecting oleic acid glycidyl ester with antioxidant 4020 through an epoxy-amino addition reaction, and then performing a click chemical reaction with 4-phenyl-3H-1,2,4-triazolin-3,5-dione and the double bond in oleic acid glycidyl ester to prepare a migration-resistant antioxidant.

5. A method for preparing a high wear-resistant sealing material for use in the field of mechanical automation, applied to any one of claims 1 to 4, characterized in that: The preparation method comprises the following steps: weighing materials according to the above-mentioned mass fractions, uniformly blending EPDM rubber and solution-polymerized styrene-butadiene rubber in an open mill, adding 0.1 phr of a peroxide crosslinking agent, plasticating for 1-2 minutes, subsequently adding zinc oxide and stearic acid, mixing for 2-3 minutes, subsequently adding a migration-resistant antioxidant and mixing for 2-3 minutes, and then adding carbon black in batches. After the carbon black and the rubber material are uniformly mixed, sheets are produced. After the sheets are produced, the sheets are transferred to a hot roller at a temperature of 145-155°C for heat treatment for 5-6 minutes. After the heat treatment is completed, the sheets are allowed to cool. After cooling, an accelerator and sulfur are added and mixed. The sheets are uniformly mixed and produced to prepare a high-wear-resistant sealing material.

6. The method for preparing a high wear-resistant sealing material for use in the field of mechanical automation according to claim 5, characterized in that: The peroxide cross-linking agent is dicumyl peroxide.

7. The method for preparing a high wear-resistant sealing material for use in the field of mechanical automation according to claim 5, characterized in that: The migration-resistant antioxidant comprises the following preparation steps: adding a modified antioxidant into tetrahydrofuran with a mass of 16 to 18 times that of the modified antioxidant, then dropwise adding a 4-phenyl-3H-1,2,4-triazolidine-3,5-dione solution with a mass of 6 to 7 times that of the modified antioxidant, reacting at a temperature of 25 to 35° C. for 4.5 to 5.5 hours after the dropwise addition is completed, transferring the solution into methanol to precipitate a gel, then taking out the product and washing it with methanol for 3 to 5 times, and vacuum drying it at a temperature of 45 to 55° C. after washing to prepare the migration-resistant antioxidant.

8. The method for preparing a high wear-resistant sealing material for use in the field of mechanical automation according to claim 7, characterized in that: The modified antioxidant comprises the following preparation steps: weighing glycidyl oleate and antioxidant 4020 in a mass ratio of 1.1 to 1.3, mixing them evenly, adding salicylic acid at 0.6% to 0.8% of the mass of glycidyl oleate, stirring evenly after the addition, reacting at a temperature of 140 to 150° C. for 4.5 to 5.5 hours, washing with a sodium bicarbonate aqueous solution for 3 to 55 times after the reaction, and then washing with deionized water for 3 to 5 times, adding petroleum ether for rotary evaporation after the washing, and vacuum drying at a temperature of 145 to 155° C. after the rotary evaporation, to prepare the modified antioxidant.

9. The method for preparing a high wear-resistant sealing material for use in the field of mechanical automation according to claim 8, characterized in that: The mass fraction of the sodium bicarbonate aqueous solution is 3% to 5%.

10. The method for preparing a high wear-resistant sealing material for use in the field of mechanical automation according to claim 7, characterized in that: The preparation process of the 4-phenyl-3H-1,2,4-triazolidine-3,5-dione solution is as follows: 4-phenyl-3H-1,2,4-triazolidine-3,5-dione is added to tetrahydrofuran at a mass ratio of 1:22-25 and stirred evenly to prepare a 4-phenyl-3H-1,2,4-triazolidine-3,5-dione solution for later use.

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