CN115160668A - Anti-aging rubber sealing ring and preparation method and application thereof - Google Patents
Anti-aging rubber sealing ring and preparation method and application thereof Download PDFInfo
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Abstract
An anti-aging rubber sealing ring and a preparation method and application thereof, wherein the rubber sealing ring is processed by taking nitrile-butadiene composite rubber as a raw material; the nitrile-butadiene composite rubber comprises the following raw materials in parts by weight: 90-95 parts of hydrogenated nitrile rubber, 30-35 parts of carbon black mixture, 10-15 parts of zinc monomethacrylate, 5-10 parts of fluororubber, 3-5 parts of N, N '-4,4' -diphenylmethane bismaleimide, 3-5 parts of zinc oxide, 2-4 parts of composite antioxidant, 2-4 parts of heat-resistant auxiliary agent, 1-2 parts of sulfur, 1-1.5 parts of stearic acid, 0.5-1 part of accelerator and 0.5-1 part of cross-linking agent TAIC. According to the anti-aging rubber sealing ring and the preparation method and application thereof, the formula of the butyronitrile composite rubber for manufacturing the sealing ring is optimized to improve the heat-resisting aging performance of the rubber sealing ring, and the anti-aging coating is coated on the outer surface of the rubber sealing ring to delay the aging effect caused by oxygen, sunlight and the like, so that the anti-aging rubber sealing ring can be applied to the field of oil extraction engineering and has a wide prospect.
Description
Technical Field
The invention belongs to the technical field of rubber, and particularly relates to an anti-aging rubber sealing ring and a preparation method and application thereof.
Background
The nitrile rubber is an irreplaceable high-elasticity high polymer material, can bear great strain, can meet various material performance requirements through proper formula design, and is an ideal raw material for manufacturing sealing elements.
In the prior art, the sealing ring made of nitrile rubber is widely applied, and aging is an irreversible phenomenon existing in all high polymer materials, and macroscopically shows that the material performance is reduced, even the application value is lost. When the nitrile rubber used for manufacturing the sealing ring is aged, the sealing ring can have the phenomena of stickiness, cracking, hardening, color change, embrittlement, cracking and the like, and the normal use of the nitrile rubber sealing ring is influenced. Therefore, in recent years, the aging of nitrile rubber seal rings and nitrile rubbers has been increasingly studied.
Chinese patent application number is 201921864976.8 and discloses a nitrile rubber sealing washer that prevents ageing, carries out self ageing resistance through at nitrile rubber sealing washer surface spraying anti-aging coating, and outside cover is equipped with the plastics encapsulation when preserving, and plastics encapsulation inner wall adds establishes the paraffin strip and paints the sealing washer surface and avoid ageing.
The Chinese patent application number of 201910140104.5 discloses an anti-aging O-shaped sealing ring and a production method thereof, wherein an anti-aging protective layer is arranged between a polytetrafluoroethylene sealing outer ring and a rubber main body inner ring, so that the anti-aging protective layer can be isolated from external ozone or oxygen, the performance of the rubber main body is basically unchanged during the use period, and the aging of the rubber main body is prevented.
The 2 prior arts all improve the anti-aging performance of the rubber sealing ring through the structural improvement of the nitrile rubber sealing ring, and neither the composition and mechanism of the anti-aging coating and the anti-aging protective layer which play the anti-aging performance nor the anti-aging effect of the rubber sealing ring are explained.
The Chinese patent application No. 202111195394.7 discloses a high-temperature-resistant nitrile rubber, application thereof, a traceless segmented vulcanization method of a sealing rubber product and a main driving sealing ring, wherein a combination of multiple antioxidants is adopted to obtain good anti-aging performance and make up for the defect of a single antioxidant, and the adopted composite antioxidant is the combination of an antioxidant 4010NA, an antioxidant 4020, an antioxidant 246, an antioxidant TMQ and an antioxidant MB.
In the prior art, the anti-aging performance of a nitrile rubber raw material for manufacturing a sealing ring is improved by compounding an anti-aging agent, and after a hot air aging test of 70h and 125 ℃ is carried out on a shield machine main driving sealing ring sample prepared in the embodiment 1-3, the increase range of the hardness is 7.0-7.4%, which shows that the rubber material provided by the invention has good high temperature resistance, and the temperature resistance can reach 125 ℃.
In fact, the sealing materials (rubber sealing rings) used in the field of oil extraction engineering work under the working conditions of high temperature and high pressure difference, the daily working temperature of the sealing materials is usually 120 ℃ higher than the aging temperature of the rubber industry detection standard, and the working process of the sealing materials is equivalent to the aging process. In the field of oil extraction engineering, 150 ℃ is generally used as the long-term use temperature of rubber used in the high-temperature and high-pressure field, so that the temperature resistance of a rubber material is far from enough if the temperature resistance reaches 125 ℃. Therefore, an anti-aging rubber sealing ring and a preparation method thereof need to be developed, have better heat-resistant and anti-aging performance, can be applied to the field of oil extraction engineering, and meet the technical index requirements in the use process.
Disclosure of Invention
The purpose of the invention is as follows: in order to overcome the defects, the invention aims to provide an anti-aging rubber sealing ring and a preparation method and application thereof.
The purpose of the invention is realized by the following technical scheme:
an anti-aging rubber sealing ring is processed by taking nitrile-butadiene composite rubber as a raw material;
the nitrile-butadiene composite rubber comprises the following raw materials in parts by weight:
90-95 parts of hydrogenated nitrile rubber,
30-35 parts of carbon black mixture,
10-15 parts of zinc monomethacrylate,
5-10 parts of fluororubber,
3-5 parts of N, N '-4,4' -diphenylmethane bismaleimide,
3-5 parts of zinc oxide,
2-4 parts of composite anti-aging agent,
2-4 parts of heat-resistant auxiliary agent,
1-2 parts of sulfur,
1 to 1.5 portions of stearic acid,
0.5-1 part of accelerator,
0.5-1 part of cross-linking agent TAIC.
The anti-aging rubber sealing ring provided by the invention has the advantage that the heat-resistant and anti-aging performance of the rubber sealing ring is improved by optimizing the formula of the nitrile-butadiene composite rubber for manufacturing the sealing ring.
The thermal aging resistance (heat resistance) refers to the capability of rubber and products thereof to maintain physical and mechanical properties or service performance after long-term aging, and in the prior art, sealing ring products made of nitrile rubber have excellent oil resistance at higher temperature, but the mechanical properties of the sealing ring products are deteriorated with the increase of the service temperature, so that the use of the sealing ring products under severe conditions (such as the field of oil extraction engineering) is limited.
Compared with the prior art in which the anti-aging performance is improved only by optimizing the anti-aging system, the nitrile-butadiene composite rubber disclosed by the invention has the advantages that the anti-aging performance is improved by jointly optimizing the rubber substrate, the vulcanization system, the reinforcing filling system, the anti-aging system, the heat-resisting system and the like, so that a better anti-aging effect is obtained.
The rubber matrix is compounded by hydrogenated nitrile rubber and fluororubber, the main chain of the hydrogenated nitrile rubber molecule is highly saturated and has a stable carbon chain structure, and better mechanical property, thermal stability, oil resistance and thermal aging resistance are shown, fluorine atoms are introduced into the fluororubber, so that excellent heat resistance, oxidation resistance, oil resistance, corrosion resistance and atmospheric aging resistance are shown, the performance requirements which are difficult to achieve by single rubber can be prepared by blending the hydrogenated nitrile rubber and the fluororubber, particularly the hydrogenated nitrile rubber and the fluororubber have similar polymer structures, the solubility parameters are also relatively close, and the hydrogenated nitrile rubber and the fluororubber have better compatibility when being blended.
The invention adds zinc oxide and stearic acid as vulcanization activator, adds N, N '-4,4' -diphenylmethane bismaleimide, the formed cross-linking bond is C-C covalent bond, the bond energy is higher than the single sulfur or multi sulfur bond formed by common sulfur vulcanization system, in addition, the molecule chain segment of N, N '-4,4' -diphenylmethane bismaleimide contains phenylene structure, the cross-linking density of vulcanization system is better, and the heat resistance, aging resistance, rigidity and hardness of butyronitrile compound rubber are better improved.
The invention adopts the compounding of a carbon black mixture and zinc monomethacrylate as a reinforcing filling system, and has the advantages that the ionic polymer which can be generated in the vulcanization process has better reinforcing effect on the rubber matrix and further enhances the interaction between the carbon black mixture and the rubber matrix by adding the zinc monomethacrylate to cooperate with the carbon black mixture, so that the tensile strength of the nitrile-butadiene composite rubber is reduced more slowly in an aging environment, and the aging rate is slower.
The anti-aging system adopts the composite anti-aging agent, and utilizes the synergistic effect among different types of anti-aging agents to exert the effect of the anti-aging agent to the maximum extent and delay the aging effect of the nitrile-butadiene composite rubber; in order to ensure that the rubber sealing ring can be used at high temperature, the heat resistance of the nitrile-butadiene composite rubber is improved by adding the heat-resistant auxiliary agent.
Further, in the anti-aging rubber seal ring, the carbon black mixture comprises carbon black N330, carbon black N550 and Si/CB, and the weight ratio of the carbon black N330 to the carbon black N550 to the Si/CB is 1-3:1-3; the composite antioxidant comprises an antioxidant 4010NA, an antioxidant RD and an antioxidant 445, wherein the weight ratio of the antioxidant 4010NA to the antioxidant RD to the antioxidant 445 is 1-2:1-2:1-2.
The results of the literature (York, liuli. Effect of different carbon black types on nitrile rubber Properties [ J ]. Colloid and Polymer 2015,33 (3): 110-11) show that: the vulcanized rubber filled with the carbon black N330 and the carbon black N550 has better thermal aging resistance, therefore, the carbon black mixture is prepared by compounding the carbon black N330 and the carbon black N550, and Si/CB is added to replace partial carbon black as a reinforcing agent, the Si/CB is biomass silicon carbon, the arrangement of carbon atoms on the surface of the biomass silicon carbon has an sp2 hybrid structure similar to that of a carbon nano tube, the acting force between Si/CB particles and a rubber matrix is higher than that of the carbon black N330 and the carbon black N550 and the rubber matrix, so that better toughness and tearing strength are shown, and meanwhile, the Si/CB reinforced rubber matrix has lower permanent deformation rate and better elasticity. The composite anti-aging agent comprises anti-aging agent 4010NA, anti-aging agent RD and anti-aging agent 445, and the anti-aging agent can play a role to the maximum extent by utilizing the synergistic effect among components by compounding different types of anti-aging agents according to a reasonable proportion.
Further, in the anti-aging rubber seal ring, the accelerator is one of an accelerator TBBS, an accelerator TMTD, an accelerator TEA and an accelerator TRT; the heat-resistant auxiliary agent is one of heat-resistant auxiliary agents MDMA, magnesium oxide and calcium oxide.
The accelerator is preferably an accelerator TBBS, and the heat-resistant assistant is preferably a heat-resistant assistant MDMA.
Further, the outer surface of the rubber sealing ring is coated with an anti-aging coating, and the anti-aging coating is a coating layer formed by uniformly coating an anti-aging coating on the outer surface of the rubber sealing ring and having a thickness of 0.1-0.5 mm;
the anti-aging coating comprises the following raw materials in parts by weight:
690-710 parts of deionized water,
200-220 parts of epoxy resin,
90-110 parts of hexamethylene diamine,
1-3 parts of diethyl phthalate,
0.5 to 1.5 portions of monoamino silsesquioxane,
0.5 to 1.5 portions of bentonite,
0.5-1 part of mica powder,
0.5-1 part of leveling agent.
In order to further improve the ageing resistance of the rubber sealing ring, the outer surface of the rubber sealing ring is coated with an ageing-resistant coating which can delay the ageing effect caused by oxygen, sunlight and the like.
The anti-aging coating is a water-based coating, and is prepared by taking hexamethylene diamine and diethyl phthalate as curing agents, bentonite and mica powder as fillers, monoamino silsesquioxane and a flatting agent as functional auxiliaries, and epoxy resin dispersed in a dispersion medium taking water as a continuous phase in a form of particles. The monoamino silsesquioxane group is of a cage-shaped three-dimensional structure, the stability of the internal structure of the coating can be effectively improved, effective physical crosslinking can be formed in the coating, the monoamino silsesquioxane group also has excellent thermal stability, the heat resistance of the anti-aging coating can be enhanced, oxygen can be effectively prevented from entering the interior of the rubber sealing ring, and the tensile strength and the elongation at break of the rubber sealing ring are reduced more slowly.
Furthermore, the anti-aging rubber sealing ring is characterized in that a surrounding groove and an expanding and pressurizing cavity are sequentially formed in the inner side of the rubber sealing ring from outside to inside, a metal ring framework is arranged in the expanding and pressurizing cavity, and a plurality of holes are uniformly formed in the metal framework.
When the rubber sealing ring is used for sealing the butt joint of the pipeline, the time is long, if the rubber sealing ring is aged, the phenomenon of untight sealing can occur, the surrounding groove is arranged on the inner side of the rubber sealing ring, the expanding pressurizing cavity is arranged on the inner side of the surrounding groove, the metal ring framework of the expanding pressurizing cavity can effectively keep the rubber sealing ring from deforming, the upper surface and the lower surface of the rubber sealing ring are tightly attached to the butt joint of the pipeline by absorbing the pressure of the pipeline through the expanding pressurizing cavity, and the leakage phenomenon can not occur even if the rubber sealing ring is aged and hardened.
Further, an inclined surface transition is arranged between the surrounding groove and the rubber sealing ring of the anti-aging rubber sealing ring; a step transition is arranged between the expanding pressurization cavity and the surrounding groove; the outward surfaces of the upper part and the lower part of the metal ring framework are propped against the steps of the expanding and pressurizing cavity.
When gas or liquid in the pipeline flows, the pressure of the gas or liquid in the diameter-expanding pressurizing cavity can force the diameter-expanding pressurizing cavity to be pressurized, and the design enables the upper surface and the lower surface of the rubber sealing ring to be attached to the butt joint of the pipeline more tightly under the synchronous pressure absorbed in the diameter-expanding pressurizing cavity.
The invention also relates to a preparation method of the anti-aging rubber sealing ring, which comprises the steps of preparing the nitrile-butadiene composite rubber and preparing the anti-aging coating;
the preparation method of the nitrile-butadiene composite rubber comprises the following steps:
(1) Respectively placing hydrogenated nitrile rubber and fluororubber on an open mill for uniform plastication by a coating roller, and uniformly mixing the two plasticated rubbers to obtain mixed rubber;
(2) Placing the mixed rubber on an open mill, uniformly mixing the mixed rubber by a wrapping roller, then sequentially adding stearic acid, zinc oxide, a heat-resistant auxiliary agent, a composite anti-aging agent, a cross-linking agent TAIC, a carbon black mixture and zinc monomethacrylate, finally adding sulfur, N '-4,4' -diphenylmethane bismaleimide and an accelerator, uniformly mixing the mixed rubber by the wrapping roller, adjusting the roller spacing to 1-3mm, and after 5-10 times of thin-pass triangular wrapping, discharging the mixed rubber to obtain a rubber compound;
(3) Standing the rubber compound for 20-24 h, and then respectively carrying out primary vulcanization and secondary vulcanization by adopting a flat vulcanizing machine and an electric heating air blast thermostat to obtain the nitrile-butadiene composite rubber.
Further, in the preparation method of the anti-aging rubber sealing ring, the parameters of the first-stage vulcanization are as follows: the temperature is 160-180 deg.C, the pressure is 10-20MPa, and the time is 5-15min; setting parameters of the secondary vulcanization: the temperature is 140-160 ℃, the pressure is 5-15MPa, and the time is 3-5h.
The prepared nitrile-butadiene composite rubber is used as a raw material, and the nitrile-butadiene composite rubber is processed into a rubber sealing ring by adopting the prior art according to the requirements of the technical personnel in the field.
Further, the preparation method of the anti-aging rubber seal ring comprises the following steps:
(1) Adding epoxy resin, hexamethylene diamine, diethyl phthalate, bentonite, mica powder and a flatting agent into 70-72 wt% of deionized water, and carrying out ultrasonic stirring until uniform emulsion is obtained to obtain solution A;
(2) Dissolving monoamino silsesquioxane into the rest deionized water to obtain solution B;
(3) And slowly dripping the solution B into the solution A, and carrying out ultrasonic treatment while dripping for 5-15min to obtain the anti-aging coating.
The prepared anti-aging coating is used as a coating, and the coating is uniformly coated on the outer surface of the rubber sealing ring by adopting a film coating device in the prior art to form a coating layer with the thickness of 0.1-0.5 mm.
The invention also relates to application of the anti-aging rubber sealing ring, and the anti-aging rubber sealing ring is used as a sealing material in the field of oil extraction engineering.
In the field of oil extraction engineering, 150 ℃ is generally used as the long-term use temperature of rubber used in the high-temperature and high-pressure field, and the anti-aging rubber sealing ring can be applied to the field of oil extraction engineering and meets the technical index requirements in the use process.
Compared with the prior art, the invention has the following beneficial effects:
(1) The anti-aging rubber sealing ring disclosed by the invention has the advantages that the formula of the butyronitrile compound rubber for manufacturing the sealing ring is optimized, so that the heat-resistant aging performance of the rubber sealing ring is improved; compared with the prior art in which the anti-aging performance is improved only by optimizing the anti-aging system, the nitrile-butadiene composite rubber has the advantages that the anti-aging performance is improved by jointly optimizing the rubber substrate, the vulcanization system, the reinforcing filling system, the anti-aging system, the heat-resisting system and the like, so that a better anti-aging effect is obtained;
(2) According to the anti-aging rubber sealing ring disclosed by the invention, the anti-aging coating is coated on the outer surface of the rubber sealing ring, and can delay the aging effect caused by oxygen, sunlight and the like, so that the anti-aging performance of the rubber sealing ring is further improved;
(3) When the rubber sealing ring is used for sealing a pipeline butt joint, the inner side of the rubber sealing ring is provided with the surrounding groove, the inner side of the surrounding groove is provided with the expanding pressurization cavity, a metal ring framework of the expanding pressurization cavity can effectively keep the rubber sealing ring from deforming, the upper surface and the lower surface of the rubber sealing ring are tightly attached to the pipeline butt joint by absorbing the pressure of the pipeline through the expanding pressurization cavity, and the leakage phenomenon can not occur even if the rubber sealing ring is aged and hardened;
(4) The preparation method and the application of the anti-aging rubber sealing ring disclosed by the invention have the advantages that the preparation steps are reasonable and simple in arrangement and have high flexibility, and the prepared nitrile-butadiene composite rubber is used as a raw material to be processed into the rubber sealing ring, so that the rubber sealing ring can be applied to the field of oil extraction engineering and can meet the technical index requirements in the use process.
Drawings
FIG. 1 is a schematic cross-sectional view of an anti-aging rubber seal ring according to an embodiment 13 of the present invention;
in the figure: the device comprises a surrounding groove 1, an inclined surface 11, an expanding and pressurizing cavity 2, a step 21, a metal ring framework 3 and a rubber sealing ring a.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with specific experimental data of comparative example 1 and examples 1 to 10, comparative example 2 and example 11, and comparative example 3 and example 12, and accompanying fig. 1 and example 13, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The following comparative example 1 and examples 1 to 10 provide a nitrile rubber compound for manufacturing a seal ring and a preparation method thereof.
The basic formula is as follows: hydrogenated nitrile rubber, carbon black N330, sulfur, zinc oxide, accelerator TBBS, stearic acid, crosslinker TAIC, the variables: fluororubber, carbon black N550, si/CB, N '-4,4' -diphenylmethane bismaleimide, a composite anti-aging agent and a heat-resistant auxiliary MDMA (magnesium methacrylate).
The raw materials are all common raw materials in the commercial rubber industry.
The test formulations of comparative example 1 and examples 1-9 are shown in tables 1 and 2.
TABLE 1 test formulations for comparative example 1 and examples 1-4
| Components | Comparative example 1 | Example 1 | Example 2 | Example 3 | Example 4 |
| Hydrogenated nitrile rubber | 100 | 90 | 90 | 90 | 90 |
| Carbon Black N330 | 45 | 45 | 25 | 20 | 16 |
| Carbon Black N550 | 0 | 0 | 20 | 15 | 11 |
| Si/CB | 0 | 0 | 0 | 10 | 8 |
| Zinc monomethacrylate | 0 | 0 | 0 | 0 | 10 |
| Fluororubber | 0 | 10 | 10 | 10 | 10 |
| N, N '-4,4' -diphenylmethane bismaleimide | 0 | 0 | 0 | 0 | 0 |
| Zinc oxide | 4 | 4 | 4 | 4 | 4 |
| Anti-aging agent 4010NA | 0 | 0 | 0 | 0 | 0 |
| Anti-aging agent RD | 0 | 0 | 0 | 0 | 0 |
| Anti-aging agent 445 | 0 | 0 | 0 | 0 | 0 |
| Heat-resistant auxiliary MDMA | 0 | 0 | 0 | 0 | 0 |
| |
2 | 2 | 2 | 2 | 2 |
| Stearic acid | 1.5 | 1.5 | 1.5 | 1.5 | 1.5 |
| Accelerator TBBS | 0.5 | 0.5 | 0.5 | 0.5 | 0.5 |
| Cross-linker TAIC | 0.7 | 0.7 | 0.7 | 0.7 | 0.7 |
TABLE 2 test formulations for examples 5-10
| Components | Example 5 | Example 6 | Example 7 | Example 8 | Example 9 | Example 10 |
| Hydrogenated nitrile rubber | 90 | 90 | 90 | 90 | 90 | 90 |
| Carbon Black N330 | 16 | 16 | 16 | 16 | 16 | 16 |
| |
11 | 11 | 11 | 11 | 11 | 11 |
| Si/CB | 8 | 8 | 8 | 8 | 8 | 8 |
| Zinc monomethacrylate | 10 | 10 | 10 | 10 | 10 | 10 |
| Fluororubber | 10 | 10 | 10 | 10 | 10 | 10 |
| N, N '-4,4' - |
3 | 3 | 3 | 3 | 3 | 3 |
| Zinc oxide | 4 | 4 | 4 | 4 | 4 | 4 |
| Anti-aging agent 4010NA | 0 | 0 | 3 | 0 | 0 | 0.7 |
| Antiager RD | 0 | 0 | 0 | 3 | 0 | 1.1 |
| Anti-aging agent 445 | 0 | 0 | 0 | 0 | 3 | 1.2 |
| Heat-resistant auxiliary MDMA | 0 | 3 | 3 | 3 | 3 | 3 |
| Sulfur | 1.5 | 1.5 | 1.5 | 1.5 | 1.5 | 1.5 |
| Stearic acid | 1.0 | 1.0 | 1.0 | 1.0 | 1.0 | 1.0 |
| Accelerator TBBS | 0.5 | 0.5 | 0.5 | 0.5 | 0.5 | 0.5 |
| Cross-linker TAIC | 0.7 | 0.7 | 0.7 | 0.7 | 0.7 | 0.7 |
Comparative example 1
The preparation of the nitrile composite rubber of comparative example 1 was carried out according to the test formulation described in table 1, comprising the following steps: placing hydrogenated nitrile rubber on an open mill, uniformly plasticating by using a wrapping roller, then sequentially adding stearic acid, zinc oxide, a cross-linking agent TAIC and carbon black N330, finally adding sulfur and an accelerant TBBS, uniformly mixing by using the wrapping roller, adjusting the roller distance to 1mm, performing thin-pass triangular wrapping for 5 times, and then discharging to obtain a rubber compound; standing the rubber compound for 24 hours, and then respectively carrying out first-stage vulcanization and second-stage vulcanization by adopting a flat vulcanizing machine and an electric heating air blast thermostat, wherein the parameters of the first-stage vulcanization are as follows: the temperature is 170 ℃, the pressure is 15MPa, and the time is 10min; setting parameters of the secondary vulcanization: the temperature was 150 ℃, the pressure 10MPa, and the time 4h, the nitrile composite rubber of comparative example 1 was obtained.
Example 1
The preparation of the nitrile composite rubber of example 1 was carried out according to the test formulation described in table 1, comprising the following steps: respectively placing hydrogenated nitrile-butadiene rubber and fluororubber on an open mill for uniformly plastifying in a wrapping roll mode, and uniformly mixing the two plastified rubber to obtain mixed rubber; placing the mixed rubber on an open mill, uniformly mixing by using a wrapping roller, then sequentially adding stearic acid, zinc oxide, a cross-linking agent TAIC and carbon black N330, finally adding sulfur and an accelerator TBBS, uniformly mixing by using the wrapping roller, adjusting the roller spacing to 1mm, performing thin-pass triangular wrapping for 5 times, and then discharging to obtain a rubber compound; after the rubber compound is parked for 24 hours, a flat vulcanizing machine and an electric heating air blast thermostat are adopted to respectively carry out first-stage vulcanization and second-stage vulcanization, and the parameters of the first-stage vulcanization are set as follows: the temperature is 170 ℃, the pressure is 15MPa, and the time is 10min; setting parameters of the secondary vulcanization: the temperature was 150 ℃ and the pressure 10MPa for 4 hours, giving the nitrile composite rubber of example 1.
Example 2
The preparation of the nitrile composite rubber of example 2 was carried out according to the test formulation described in table 1, comprising the following steps: respectively placing hydrogenated nitrile rubber and fluororubber on an open mill for uniform plastication by a coating roller, and uniformly mixing the two plasticated rubbers to obtain mixed rubber; placing the mixed rubber on an open mill, uniformly mixing by a wrapping roller, then sequentially adding stearic acid, zinc oxide, a cross-linking agent TAIC, carbon black N330 and carbon black N550, finally adding sulfur and an accelerator TBBS, uniformly mixing by the wrapping roller, adjusting the roller spacing to 1mm, performing thin-pass triangular wrapping for 5 times, and discharging to obtain a rubber compound; standing the rubber compound for 24 hours, and then respectively carrying out first-stage vulcanization and second-stage vulcanization by adopting a flat vulcanizing machine and an electric heating air blast thermostat, wherein the parameters of the first-stage vulcanization are as follows: the temperature is 170 ℃, the pressure is 15MPa, and the time is 10min; setting parameters of the secondary vulcanization: the temperature was 150 ℃ and the pressure 10MPa for 4 hours, giving the nitrile composite rubber of example 2.
Example 3
The preparation of the nitrile composite of example 3 was carried out according to the test formulations described in table 1, comprising the following steps: respectively placing hydrogenated nitrile-butadiene rubber and fluororubber on an open mill for uniformly plastifying in a wrapping roll mode, and uniformly mixing the two plastified rubber to obtain mixed rubber; placing the mixed rubber on an open mill, wrapping the mixed rubber by a roller, uniformly mixing, then sequentially adding stearic acid, zinc oxide, a cross-linking agent TAIC, carbon black N330, carbon black N550 and Si/CB, finally adding sulfur and an accelerator TBBS, uniformly mixing by the wrapping roller, adjusting the roller distance to 1mm, wrapping the mixture by a thin-pass triangular bag for 5 times, and then discharging the mixture to obtain mixed rubber; standing the rubber compound for 24 hours, and then respectively carrying out first-stage vulcanization and second-stage vulcanization by adopting a flat vulcanizing machine and an electric heating air blast thermostat, wherein the parameters of the first-stage vulcanization are as follows: the temperature is 170 ℃, the pressure is 15MPa, and the time is 10min; setting parameters of the secondary vulcanization: the temperature was 150 ℃ and the pressure 10MPa for 4 hours, giving the nitrile composite rubber of example 3.
Example 4
The preparation of the nitrile composite of example 4 was carried out according to the test formulations described in table 1, comprising the following steps: respectively placing hydrogenated nitrile-butadiene rubber and fluororubber on an open mill for uniformly plastifying in a wrapping roll mode, and uniformly mixing the two plastified rubber to obtain mixed rubber; placing the mixed rubber on an upper roll of an open mill, uniformly mixing, then sequentially adding stearic acid, zinc oxide, a cross-linking agent TAIC, carbon black N330, carbon black N550, si/CB and zinc monomethacrylate, finally adding sulfur and an accelerator TBBS, uniformly mixing by using a wrapping roll, adjusting the roll distance to 1mm, performing thin-pass triangular wrapping for 5 times, and then discharging to obtain a rubber compound; after the rubber compound is parked for 24 hours, a flat vulcanizing machine and an electric heating air blast thermostat are adopted to respectively carry out first-stage vulcanization and second-stage vulcanization, and the parameters of the first-stage vulcanization are set as follows: the temperature is 170 ℃, the pressure is 15MPa, and the time is 10min; setting parameters of the secondary vulcanization: the temperature was 150 ℃ and the pressure 10MPa for 4 hours, to obtain the nitrile composite rubber of example 4.
Example 5
The preparation of the nitrile compound rubber of example 5 was carried out according to the test formulation described in table 2, comprising the following steps: respectively placing hydrogenated nitrile rubber and fluororubber on an open mill for uniform plastication by a coating roller, and uniformly mixing the two plasticated rubbers to obtain mixed rubber; placing the mixed rubber on an open mill, uniformly mixing the mixed rubber by a wrapping roller, then sequentially adding stearic acid, zinc oxide, a cross-linking agent TAIC, carbon black N330, carbon black N550, si/CB and zinc monomethacrylate, finally adding sulfur, N '-4,4' -diphenylmethane bismaleimide and an accelerator TBBS, uniformly mixing the rubber by the wrapping roller, adjusting the roller distance to 1mm, and carrying out thin-passing triangular wrapping for 5 times, and then discharging the rubber to obtain mixed rubber; standing the rubber compound for 24 hours, and then respectively carrying out first-stage vulcanization and second-stage vulcanization by adopting a flat vulcanizing machine and an electric heating air blast thermostat, wherein the parameters of the first-stage vulcanization are as follows: the temperature is 170 ℃, the pressure is 15MPa, and the time is 10min; setting parameters of the secondary vulcanization: the temperature was 150 ℃ and the pressure 10MPa for 4 hours, giving the nitrile composite rubber of example 5.
Example 6
The preparation of the nitrile rubber compound of example 6 was carried out according to the test formulation described in table 2, comprising the following steps: respectively placing hydrogenated nitrile rubber and fluororubber on an open mill for uniform plastication by a coating roller, and uniformly mixing the two plasticated rubbers to obtain mixed rubber; placing the mixed rubber on an open mill, uniformly mixing the mixed rubber by a wrapping roller, then sequentially adding stearic acid, zinc oxide, a heat-resistant auxiliary MDMA, a cross-linking agent TAIC, carbon black N330, carbon black N550, si/CB and zinc monomethacrylate, finally adding sulfur, N '-4,4' -diphenylmethane bismaleimide and an accelerator TBBS, uniformly mixing the rubber by the wrapping roller, adjusting the roller distance to 1mm, and performing thin-pass triangular wrapping for 5 times, and then discharging to obtain mixed rubber; standing the rubber compound for 24 hours, and then respectively carrying out first-stage vulcanization and second-stage vulcanization by adopting a flat vulcanizing machine and an electric heating air blast thermostat, wherein the parameters of the first-stage vulcanization are as follows: the temperature is 170 ℃, the pressure is 15MPa, and the time is 10min; setting parameters of the secondary vulcanization: the temperature was 150 ℃ and the pressure 10MPa for 4 hours, giving the nitrile composite rubber of example 6.
Example 7
The preparation of the nitrile compound rubber of example 7 was carried out according to the test formulations described in table 2, comprising the following steps: respectively placing hydrogenated nitrile-butadiene rubber and fluororubber on an open mill for uniformly plastifying in a wrapping roll mode, and uniformly mixing the two plastified rubber to obtain mixed rubber; placing the mixed rubber on an open mill, wrapping the mixed rubber by a roller, uniformly mixing, then sequentially adding stearic acid, zinc oxide, a heat-resistant auxiliary MDMA, an anti-aging agent 4010NA, a cross-linking agent TAIC, carbon black N330, carbon black N550, si/CB and zinc monomethacrylate, finally adding sulfur, N '-4,4' -diphenylmethane bismaleimide and an accelerator TBBS, uniformly mixing by the roller, adjusting the roller distance to 1mm, and feeding after 5 times of triangular wrapping by means of thin passing to obtain mixed rubber; standing the rubber compound for 24 hours, and then respectively carrying out first-stage vulcanization and second-stage vulcanization by adopting a flat vulcanizing machine and an electric heating air blast thermostat, wherein the parameters of the first-stage vulcanization are as follows: the temperature is 170 ℃, the pressure is 15MPa, and the time is 10min; setting parameters of the secondary vulcanization: the temperature was 150 ℃ and the pressure 10MPa for 4 hours, giving the nitrile composite rubber of example 7.
Example 8
The preparation of the nitrile rubber compound of example 8 was carried out according to the test formulation described in table 2, comprising the following steps: respectively placing hydrogenated nitrile rubber and fluororubber on an open mill for uniform plastication by a coating roller, and uniformly mixing the two plasticated rubbers to obtain mixed rubber; placing the mixed rubber on an open mill, wrapping the mixed rubber by a roller, uniformly mixing, then sequentially adding stearic acid, zinc oxide, a heat-resistant auxiliary MDMA, an anti-aging agent RD, a cross-linking agent TAIC, carbon black N330, carbon black N550, si/CB and zinc monomethacrylate, finally adding sulfur, N '-4,4' -diphenylmethane bismaleimide and an accelerator TBBS, uniformly mixing by the roller, adjusting the roller distance to 1mm, and after wrapping the mixture by a triangular bag for 5 times, discharging to obtain mixed rubber; standing the rubber compound for 24 hours, and then respectively carrying out first-stage vulcanization and second-stage vulcanization by adopting a flat vulcanizing machine and an electric heating air blast thermostat, wherein the parameters of the first-stage vulcanization are as follows: the temperature is 170 ℃, the pressure is 15MPa, and the time is 10min; setting parameters of the secondary vulcanization: the temperature was 150 ℃ and the pressure 10MPa for 4 hours, giving the nitrile composite rubber of example 8.
Example 9
The preparation of the nitrile compound rubber of example 9 was carried out according to the test formulations described in table 2, comprising the following steps: respectively placing hydrogenated nitrile-butadiene rubber and fluororubber on an open mill for uniformly plastifying in a wrapping roll mode, and uniformly mixing the two plastified rubber to obtain mixed rubber; putting the mixed rubber on an open mill, uniformly mixing the mixed rubber by a wrapping roller, then sequentially adding stearic acid, zinc oxide, a heat-resistant auxiliary MDMA, an anti-aging agent 445, a cross-linking agent TAIC, carbon black N330, carbon black N550, si/CB and zinc monomethacrylate, finally adding sulfur, N '-4,4' -diphenylmethane bismaleimide and an accelerator TBBS, uniformly mixing the rubber by the wrapping roller, adjusting the roller distance to 1mm, and discharging after 5 times of triangular wrapping by means of thin-pass beating to obtain rubber compound; after the rubber compound is parked for 24 hours, a flat vulcanizing machine and an electric heating air blast thermostat are adopted to respectively carry out first-stage vulcanization and second-stage vulcanization, and the parameters of the first-stage vulcanization are set as follows: the temperature is 170 ℃, the pressure is 15MPa, and the time is 10min; setting parameters of the secondary vulcanization: the temperature was 150 ℃ and the pressure 10MPa for 4 hours, giving the nitrile composite rubber of example 9.
Example 10
The preparation of the nitrile rubber compound of example 10 was carried out according to the test formulation described in table 2, comprising the following steps: respectively placing hydrogenated nitrile-butadiene rubber and fluororubber on an open mill for uniformly plastifying in a wrapping roll mode, and uniformly mixing the two plastified rubber to obtain mixed rubber; placing the mixed rubber on an upper roll of an open mill, uniformly mixing, then sequentially adding stearic acid, zinc oxide, a heat-resistant auxiliary MDMA, an anti-aging agent 4010NA, an anti-aging agent RD, an anti-aging agent 445, a cross-linking agent TAIC, carbon black N330, carbon black N550, si/CB and zinc monomethacrylate, finally adding sulfur, N '-4,4' -diphenylmethane bismaleimide and an accelerator TBBS, uniformly mixing by using a wrapping roll, adjusting the roll distance to 1mm, and discharging after 5 times of thin-passing triangular wrapping to obtain mixed rubber; after the rubber compound is parked for 24 hours, a flat vulcanizing machine and an electric heating air blast thermostat are adopted to respectively carry out first-stage vulcanization and second-stage vulcanization, and the parameters of the first-stage vulcanization are set as follows: the temperature is 170 ℃, the pressure is 15MPa, and the time is 10min; setting parameters of the secondary vulcanization: the temperature was 150 ℃ and the pressure 10MPa for 4 hours, to obtain the nitrile composite rubber of example 10.
Comparative example 2 and example 11 below provide an anti-aging coating applied to the outer surface of a rubber seal ring to form an anti-aging coating, and a method for preparing the same.
The basic formula is as follows: deionized water, epoxy resin E-44, hexamethylene diamine, diethyl phthalate, bentonite, mica powder and a flatting agent BYK3560. Variables are as follows: a monoaminosilsesquioxane.
The raw materials are all common raw materials in the commercial water-based epoxy coating industry.
The test formulations for comparative example 2 and example 11 are set forth in table 3.
TABLE 3 test formulations for comparative example 2 and example 11
| Components | Comparative example 2 | Example 11 |
| Deionized water | 700 | 700 |
| Epoxy resin E-44 | 210 | 210 |
| Hexamethylene diamine | 90 | 90 |
| Phthalic |
2 | 2 |
| Bentonite clay | 1.5 | 1.5 |
| Mica powder | 0.5 | 0.5 |
| Leveling agent BYK3560 | 0.6 | 0.6 |
| Monoamino silsesquioxanes | 0 | 1.2 |
Comparative example 2
The preparation of the anti-aging coating of comparative example 2 was carried out according to the test formulation described in table 3, comprising the following steps: and adding epoxy resin E-44, hexamethylene diamine, diethyl phthalate, bentonite, mica powder and a flatting agent BYK3560 into deionized water, and carrying out ultrasonic stirring until a uniform emulsion is obtained, thus obtaining the anti-aging coating of the comparative example 2.
Example 11
The preparation of the anti-aging coating of example 11 was carried out according to the test formulation described in Table 3, comprising the following steps: adding epoxy resin E-44, hexamethylene diamine, diethyl phthalate, bentonite, mica powder and a flatting agent BYK3560 into 500 parts of deionized water, and carrying out ultrasonic stirring until uniform emulsion is obtained to obtain solution A; dissolving monoamino silsesquioxane into 200 parts of deionized water to obtain solution B; and slowly dropwise adding the solution B into the solution A, and performing ultrasonic treatment while dropwise adding for 10min to obtain the anti-aging coating of the example 11.
Example 12
As shown in fig. 1, a surrounding groove 1 and an expanding pressurizing cavity 2 are sequentially arranged on the inner side of a rubber sealing ring a prepared by taking nitrile rubber as a raw material from outside to inside, a metal ring framework 3 is arranged in the expanding pressurizing cavity 2, and a plurality of holes are uniformly arranged on the metal framework 3.
Furthermore, an inclined plane 11 is arranged between the surrounding groove 1 and the rubber sealing ring a; a step 21 transition is arranged between the diameter expanding pressurization cavity 2 and the surrounding groove 1; the outward surfaces of the upper part and the lower part of the metal ring framework 3 are pressed against the step 21 of the expanding and pressurizing cavity 2.
When the rubber sealing ring a is used for sealing the joint of the pipeline, the time is long, if the rubber sealing ring a is aged, the phenomenon of untight sealing can occur, the surrounding groove 1 is arranged on the inner side of the rubber sealing ring a, the expanding pressurizing cavity 2 is arranged on the inner side of the surrounding groove 1, the metal ring framework 3 of the expanding pressurizing cavity 2 can effectively maintain the rubber sealing ring a not to deform, the pipeline pressure is absorbed by the expanding pressurizing cavity 2, so that the upper surface and the lower surface of the rubber sealing ring a are tightly attached to the joint of the pipeline, and the leakage phenomenon can not occur even if the rubber sealing ring a is aged and hardened.
Effect verification:
the nitrile rubber composite obtained in comparative example 1 and examples 1 to 10 was tested for properties according to the following test methods, and the test results are shown in tables 4, 5 and 6.
(1) Mechanical properties: testing according to GB/T528-2009; the stretching speed is 500mm/min; hardness according to GB/T531-2008.
(2) Aging performance: an aging test is carried out in a DHG-9140A type oven produced by Shanghai Qixin scientific instruments Co., ltd, the temperature is 170 ℃, the ventilation rate is 20 times per hour, and the mechanical property of a test sample is tested after aging for 72 hours.
TABLE 4 mechanical Property test data for comparative example 1 and examples 1-10
| Shore A hardness | Tensile strength/MPa | 100% stress at definite elongation/MPa | Elongation at break/%) | Tear strength/MPa | |
| Comparative example 1 | 77 | 39.2 | 7.6 | 324 | 43.6 |
| Example 1 | 80 | 38.1 | 8.5 | 335 | 54.2 |
| Example 2 | 81 | 38.6 | 8.6 | 336 | 54.9 |
| Example 3 | 82 | 39.7 | 8.8 | 340 | 56.1 |
| Example 4 | 83 | 41.2 | 9.1 | 343 | 60.1 |
| Example 5 | 85 | 41.6 | 9.3 | 348 | 63.9 |
| Example 6 | 84 | 41.4 | 9.1 | 345 | 63.6 |
| Example 7 | 83 | 41.3 | 9.0 | 343 | 62.0 |
| Example 8 | 82 | 41.2 | 8.8 | 342 | 61.9 |
| Example 9 | 83 | 41.1 | 9.0 | 342 | 62.4 |
| Example 10 | 83 | 41.4 | 9.1 | 344 | 62.8 |
TABLE 5 mechanical Properties of test specimens after 72h aging of comparative example 1 and examples 1-10
| Tensile strength/MPa | Percent change in tensile Strength% | Elongation at break/% | Elongation at Break Change% | |
| Comparative example 1 | 29.1 | 25.8 | 223 | 31.2 |
| Example 1 | 33.0 | 13.1 | 240 | 28.4 |
| Example 2 | 33.8 | 12.4 | 251 | 25.3 |
| Example 3 | 34.8 | 12.3 | 253 | 25.6 |
| Example 4 | 36.1 | 12.3 | 281 | 18.1 |
| Example 5 | 37.4 | 10.1 | 286 | 17.8 |
| Example 6 | 37.7 | 9.0 | 289 | 16.2 |
| Example 7 | 39.0 | 5.6 | 312 | 9.0 |
| Example 8 | 39.2 | 4.9 | 316 | 8.0 |
| Example 9 | 39.1 | 4.9 | 314 | 8.2 |
| Example 10 | 39.6 | 4.3 | 321 | 6.7 |
The anti-aging coatings prepared in comparative example 2 and example 11 were used as coatings, and the coatings were uniformly applied to the outer surface of example 10 using a film coater in the prior art to form a coating layer having a thickness of 0.5mm, thereby obtaining samples 1 and 2.
The following test methods were used to test the properties of samples 1 and 2, and the test results are shown in Table 6.
(1) An aging test is carried out in a DHG-9140A type oven produced by Shanghai Qixin scientific instruments Co., ltd, the temperature is 170 ℃, the ventilation rate is 20 times per hour, the mechanical property of a test sample is tested after aging for 72 hours, and the mechanical property is tested according to GB/T528-2009.
TABLE 6 mechanical Properties of test specimens after 72h aging of samples 1 and 2
| Tensile strength/MPa | Percent change in tensile Strength% | Elongation at break/%) | Elongation at Break Change% | |
| Sample 1 | 39.8 | 3.9 | 324 | 5.8 |
| |
40.1 | 3.1 | 326 | 5.2 |
The specific applications of the present invention are numerous and the above description is only of the preferred embodiment of the invention. It should be noted that the above examples are only for illustrating the present invention, and are not intended to limit the scope of the present invention. It will be apparent to those skilled in the art that various modifications can be made without departing from the principles of the invention and these modifications are to be considered within the scope of the invention.
Claims (10)
1. The anti-aging rubber sealing ring is characterized in that the rubber sealing ring is processed by taking nitrile-butadiene composite rubber as a raw material;
the nitrile-butadiene composite rubber comprises the following raw materials in parts by weight:
90-95 parts of hydrogenated nitrile rubber,
30-35 parts of carbon black mixture,
10-15 parts of zinc monomethacrylate,
5-10 parts of fluororubber,
3-5 parts of N, N '-4,4' -diphenylmethane bismaleimide,
3-5 parts of zinc oxide,
2-4 parts of composite anti-aging agent,
2-4 parts of heat-resistant auxiliary agent,
1-2 parts of sulfur,
1 to 1.5 portions of stearic acid,
0.5-1 part of accelerator,
0.5-1 part of cross-linking agent TAIC.
2. The anti-aging rubber seal ring according to claim 1, wherein the carbon black mixture comprises carbon black N330, carbon black N550 and Si/CB, and the weight ratio of the carbon black N330 to the carbon black N550 to the Si/CB is 1-3:1-3; the composite anti-aging agent comprises anti-aging agent 4010NA, anti-aging agent RD and anti-aging agent 445, wherein the weight ratio of the anti-aging agent 4010NA to the anti-aging agent RD to the anti-aging agent 445 is (1-2): 1-2:1-2.
3. The anti-aging rubber sealing ring according to claim 1, wherein the accelerator is one of an accelerator TBBS, an accelerator TMTD, an accelerator TEA and an accelerator TRT; the heat-resistant auxiliary agent is one of heat-resistant auxiliary agents MDMA, magnesium oxide and calcium oxide.
4. The anti-aging rubber sealing ring according to claim 1, wherein an anti-aging coating is coated on the outer surface of the rubber sealing ring, and the anti-aging coating is formed by uniformly coating an anti-aging paint on the outer surface of the rubber sealing ring to form a coating layer with the thickness of 0.1-0.5 mm; the anti-aging coating comprises the following raw materials in parts by weight:
690-710 parts of deionized water,
200-220 parts of epoxy resin,
90-110 parts of hexamethylene diamine,
1-3 parts of diethyl phthalate,
0.5 to 1.5 portions of monoamino silsesquioxane,
0.5 to 1.5 portions of bentonite,
0.5 to 1 portion of mica powder,
0.5-1 part of leveling agent.
5. The anti-aging rubber sealing ring according to claim 1, characterized in that a surrounding groove (1) and an expanding pressurizing cavity (2) are sequentially formed in the inner side of the rubber sealing ring from outside to inside, a metal ring framework (3) is arranged in the expanding pressurizing cavity (2), and a plurality of holes are uniformly formed in the metal framework (3).
6. An anti-aging rubber sealing ring according to claim 5, characterized in that a bevel (11) transition is arranged between the surrounding groove (1) and the rubber sealing ring; a step (21) transition is arranged between the diameter-expanding pressurizing cavity (2) and the surrounding groove (1); the outward surfaces of the upper part and the lower part of the metal ring framework (3) are propped against the steps (21) of the expanding pressurization cavity (2).
7. The method for preparing the anti-aging rubber sealing ring according to any one of claims 1 to 6, which comprises the steps of preparing nitrile-butadiene composite rubber, preparing anti-aging paint; the preparation method of the nitrile-butadiene composite rubber comprises the following steps:
(1) Respectively placing hydrogenated nitrile rubber and fluororubber on an open mill for uniform plastication by a coating roller, and uniformly mixing the two plasticated rubbers to obtain mixed rubber;
(2) Placing the mixed rubber on an open mill, wrapping and uniformly mixing the mixed rubber by a wrapping roller, then sequentially adding stearic acid, zinc oxide, a heat-resistant auxiliary agent, a composite anti-aging agent, a cross-linking agent TAIC, a carbon black mixture and zinc monomethacrylate, finally adding sulfur, N '-4,4' -diphenylmethane bismaleimide and an accelerator, uniformly mixing the rubber by the wrapping roller, adjusting the roller distance to 1-3mm, and after 5-10 times of thin-pass triangular wrapping, discharging the rubber to obtain rubber compound;
(3) Standing the mixed rubber for 20-24 h, and respectively carrying out first-stage vulcanization and second-stage vulcanization by adopting a flat vulcanizing machine and an electric heating air blast thermostat to obtain the nitrile-butadiene composite rubber.
8. The method for preparing the anti-aging rubber sealing ring according to claim 7, wherein the parameters of the one-stage vulcanization are set as follows: the temperature is 160-180 deg.C, the pressure is 10-20MPa, and the time is 5-15min; setting parameters of the secondary vulcanization: the temperature is 140-160 ℃, the pressure is 5-15MPa, and the time is 3-5h.
9. The method for preparing the anti-aging rubber sealing ring according to claim 7, wherein the preparation of the anti-aging coating comprises the following steps:
(1) Adding epoxy resin, hexamethylene diamine, diethyl phthalate, bentonite, mica powder and a flatting agent into 70-72 wt% of deionized water, and carrying out ultrasonic stirring until uniform emulsion is obtained to obtain solution A;
(2) Dissolving monoamino silsesquioxane into the residual deionized water to obtain solution B;
(3) And slowly dripping the solution B into the solution A, and carrying out ultrasonic treatment while dripping for 5-15min to obtain the anti-aging coating.
10. Use of the anti-aging rubber sealing ring according to any one of claims 1 to 6, wherein the anti-aging rubber sealing ring is used as a sealing material in the field of oil extraction engineering.
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