High-performance modified ethylene propylene diene monomer and preparation method thereof

Abstract

The invention provides a high-performance modified ethylene propylene diene monomer and a preparation method thereof. The rubber comprises the following components: poly-p-phenylene terephthamide carbon fiber and high-strength glass fiber modified ethylene propylene diene monomer rubber, polysiloxane and hexafluorobutyl acrylate dual-modified silicone rubber, and polyimide and ultra-high molecular weight polyethylene dual-modified polyurethane rubber. The composite material is prepared from poly-p-phenylene terephthamide carbon fiber and polyacrylamide dual-modified bisphenol A epoxy resin, chitosan hydrochloride, nano-silver modified carbon fiber, chitin, organic rare earth, polydopamine, a plasticizer, a vulcanizing agent, an anti-aging agent, an accelerant, an assistant crosslinker, a reinforcing agent, alpha-olefin and silicon dioxide aerogel. The ethylene propylene diene monomer is modified by carbon fibers and glass fibers, mixed with modified rubber and resin, modified by alpha-olefin, and crosslinked with the ethylene propylene diene monomer to form a three-dimensional network structure, so that the tolerance of the ethylene propylene diene monomer to an extreme environment is improved, the application range is expanded, and the service life is prolonged.

Description

Technical Field

[0001] The present invention relates to the technical field of polymer materials, and particularly relates to a high-performance modified ethylene propylene diene monomer (EPDM) rubber and a preparation method thereof. Background Art

[0002] Ethylene propylene diene monomer (EPDM) is a terpolymer copolymerized from ethylene, propylene and a small amount of a third monomer. Among them, the mass fraction of ethylene is usually 45-75%, and that of propylene is 25-55%. The unsaturation degree of common EPDM is only 1-2% (mole fraction), which is equivalent to having one unsaturated side group per 200 carbon atoms on average in the main chain. Therefore, ethylene propylene diene monomer belongs to a carbon chain saturated non-polar rubber. Due to the saturation of its molecular main chain, EPDM has excellent ozone and heat-oxygen aging resistance, as well as outstanding corrosion resistance, superheated water resistance, electrical insulation and water resistance, and is widely used in the preparation of sealing strips, waterproof coiled materials, air-conditioning hoses and wires and cables. However, the low-temperature resistance of EPDM needs to be further improved in order to expand its application in extreme environments.

[0003] With the continuous development of technology, in the implementation process of major projects such as aerospace and energy resource development, extreme environments such as ultra-high temperature, ultra-low temperature, and high / low temperature alternation are inevitable service environments for materials, which pose severe challenges to the high reliability and long-life service of related devices. Under this application background, it is urgent to develop a new generation of high-reliability EPDM-based rubber strips resistant to extreme environments, break through the service limit of existing EPDM-based rubber strips, and meet the major needs of future strategic projects.

[0004] Due to the fact that the composition and preparation method of existing ethylene propylene diene monomer rubber both choose conventional and commonly used existing technologies as the basis, its properties and structure are difficult to meet the actual production and living needs, and it is necessary to modify ethylene propylene diene monomer rubber to obtain high-performance ethylene propylene diene monomer rubber. Summary of the Invention

[0005] Aiming at the deficiencies of the above-mentioned existing technologies, the main purpose of the present invention is to provide a high-performance modified ethylene propylene diene monomer rubber and a preparation method thereof. First, the ethylene propylene diene monomer rubber is modified with carbon fiber and glass fiber, then other rubbers and resins that have also been modified are added for mixing, and then the ethylene propylene diene monomer rubber is modified with α-olefin. The α-olefin crosslinks with the ethylene propylene diene monomer rubber to form a three-dimensional network structure, improving the tolerance of the ethylene propylene diene monomer rubber to extreme environments. Then, by adding chitosan hydrochloride, nano-silver, chitin, organic rare earth, and polydopamine to strengthen the properties of the ethylene propylene diene monomer rubber, the antibacterial, fireproof and flame-retardant properties of the ethylene propylene diene monomer rubber are greatly enhanced, its application range is expanded, its application value is improved, and its service life is extended.

[0006] The technical solution adopted to achieve the purpose of the present invention is: A high-performance modified ethylene propylene diene monomer (EPDM) rubber, comprising the following components in parts by weight: 80-120 parts of poly(p-phenylene terephthalamide) carbon fiber and high-strength glass fiber modified EPDM rubber, 20-40 parts of polysiloxane and hexafluorobutyl acrylate double-modified silicone rubber, 10-30 parts of polyimide and ultra-high molecular weight polyethylene double-modified polyurethane rubber, 10-20 parts of poly(p-phenylene terephthalamide) carbon fiber and polyacrylamide double-modified bisphenol A epoxy resin, 1-3 parts of chitosan hydrochloride, 1-2 parts of nano-silver modified carbon fiber, 2-5 parts of chitin, 1-2 parts of organic rare earth, 1-2 parts of polydopamine, 2-5 parts of plasticizer, 2-4 parts of vulcanizing agent, 1-4 parts of anti-aging agent, 0.2-1.5 parts of accelerator, 2-8 parts of co-crosslinking agent, 5-50 parts of reinforcing agent, 1-20 parts of α-olefin, 10-30 parts of silica aerogel.

[0007] Preferably, the α-olefin is hexene, heptene, octene, nonene, decene, undecene, dodecene, tridecene, tetradecene, pentadecene, hexadecene, heptadecene or octadecene; in the present invention, the α-olefin is used to modify the EPDM rubber, and the α-olefin crosslinks with the EPDM rubber to form a three-dimensional network structure, improving the tolerance of the EPDM rubber to extreme environments (from low temperature of -40 °C to high temperature of 200 °C), achieving the broadening of the applicable range of the EPDM rubber in extreme environments and extending its service life; the α-olefin is used in the present invention to regulate the glass transition temperature of the EPDM rubber. Introducing flexible α-olefin chains can significantly change the glass transition temperature of the EPDM rubber, mainly by increasing the flexibility of the molecular chain. And this increase in flexibility makes the molecular chain easier to rotate and vibrate at low temperatures, thereby reducing Tg, because the presence of flexible chain segments reduces the constraints between molecular chain segments, making the chain segments easier to thaw and start moving; thus, the introduction of flexible chain segments in the present invention reduces the regularity and crystallinity of the entire molecular chain, reduces the intermolecular interaction force, and enables the material to achieve free movement of chain segments at lower temperatures.

[0008] Preferably, the reinforcing agent includes nano-cellulose, graphene, polyamide fiber, basalt fiber, and the weight ratio of nano-cellulose, graphene, polyamide fiber, basalt fiber is 1-3:1:1-5:1-2; the reinforcing agent in the present invention can significantly improve the mechanical properties of the EPDM rubber.

[0009] Preferably, the co-crosslinking agent is 1,2-polybutadiene, triallyl isocyanurate, m-phenylene maleimide, hexamethylenebis(triethylenethiuram) hexasulfide or trimethylolpropane triacrylate; the co-crosslinking agent in the present invention helps to form a more stable crosslinked network structure, thereby improving the heat resistance and mechanical strength of the rubber.

[0010] Preferably, the plasticizer is phthalate, butyl oleate, glyceryl triacetate, epoxidized soybean oil, butyl stearate or dioctyl sebacate. The main function of the plasticizer in the present invention is to weaken the intermolecular force of the polymer, reduce the melting temperature and viscosity of the polymer, thereby improving the compatibility and processing performance of ethylene propylene diene monomer (EPDM) rubber. In addition, the plasticizer can also reduce the hardness of the rubber, endow it with high elasticity and cold resistance, thereby enhancing the physical and mechanical properties of the final product.

[0011] Preferably, the vulcanizing agent is a metal oxide vulcanizing agent or a peroxide vulcanizing agent, the anti-aging agent is anti-aging agent RD or anti-aging agent MB, and the accelerator is accelerator D or accelerator M. In the present invention, the vulcanizing agent can make the rubber molecules form a three-dimensional network structure, enhancing its mechanical strength and durability. The anti-aging agent can absorb harmful free radicals generated during the vulcanization process, reduce the scorching phenomenon, and extend the service life of the rubber. The anti-aging agent can also significantly affect the crosslinking density of the vulcanized rubber, thereby regulating the aging resistance of the rubber. The accelerator can accelerate the vulcanization reaction, increase the vulcanization rate, and improve the properties of the vulcanized rubber.

[0012] A preparation method of the above-mentioned high-performance modified ethylene propylene diene monomer (EPDM) rubber specifically includes the following steps: S1. Internal mixing: First, mix poly(p-phenyleneterephthalamide) carbon fiber and high-strength glass fiber modified EPDM rubber, poly(dimethylsiloxane) and hexafluorobutyl acrylate double-modified silicone rubber, polyimide and ultra-high molecular weight polyethylene double-modified polyurethane rubber, and poly(p-phenyleneterephthalamide) carbon fiber and polyacrylamide double-modified bisphenol A epoxy resin, and then crush them to a mesh number of 100 - 300. Then, mix chitosan hydrochloride, nano-silver modified carbon fiber, chitin, organic rare earth, and polydopamine and crush them to a mesh number of 200 - 500. Transfer the crushed materials into an internal mixer, heat up to the internal mixing temperature, and then add the plasticizer, vulcanizing agent, anti-aging agent, accelerator, co-crosslinking agent, reinforcing agent, and silica aerogel for internal mixing. S2. Open mixing: Transfer the internally mixed rubber compound into an open mill, naturally cool the temperature to the open mixing temperature, and then conduct open mixing. The rotational speed ratio of the front and rear rollers during open mixing is 1:2 - 3, the open mixing temperature is 90 - 120 °C, and the rubber compound should be passed through the rollers at least 3 times during open mixing. After open mixing, place the rubber compound in an inert gas environment at 20 - 35 °C for 2 - 5 days. S3. Molding: Transfer the open-mixed rubber compound into a hot press and conduct hot pressing and cold pressing in sequence. The hot pressing temperature is 100 - 120 °C, the hot pressing time is 1 - 5 min, and the hot pressing pressure is 10 - 50 MPa; the cold pressing temperature is 20 - 30 °C, the cold pressing time is 10 - 15 min, and the cold pressing pressure is 20 - 80 MPa. S4. Irradiation: Mix the formed rubber compound with α-olefin and let it stand for 5 - 8 days, then irradiate it with 15 Co γ-rays with an irradiation dose of 500 kGy, an activity of 3.27×10 60 Bq, and an irradiation dose rate of 50 Gy / min to obtain the high-performance modified ethylene propylene diene monomer (EPDM) rubber.

[0013] Further, in step S1, the internal mixing temperature is 100 - 150 °C, the internal mixing time is 10 - 30 min, and the internal mixing speed is 20 - 100 rpm.

[0014] In the present invention, selecting a higher dose of γ-ray irradiation can significantly change the molecular structure and microscopic morphology of the material, thereby improving the high and low temperature resistance of the material. Using 15 Co γ-rays with an activity of 3.27×10 60 Bq; 60 Co γ-rays have the characteristics of strong penetrability and high energy, and are suitable for treating materials with large sizes and complex structures; this type of γ-ray can penetrate deep into the material and uniformly change the microscopic structure of the material, thereby improving its high and low temperature resistance.

[0015] The present invention provides a high-performance modified ethylene propylene diene monomer (EPDM) rubber and its preparation method, which have the following advantages: The high-performance modified EPDM rubber of the present invention first modifies the EPDM rubber with carbon fiber and glass fiber, then adds other rubber and resin that have also been modified for mixing, and then modifies the EPDM rubber with α-olefin. The α-olefin crosslinks with the EPDM rubber to form a three-dimensional network structure, improving the tolerance of the EPDM rubber to extreme environments. Then, by adding chitosan hydrochloride, nano-silver, chitin, organic rare earth, and polydopamine to strengthen the performance of the EPDM rubber, the antibacterial, fireproof, and flame-retardant properties of the EPDM rubber are greatly enhanced, expanding its application range, increasing its application value, and extending its service life. Specific Embodiments

[0016] The following further elaborates and explains the present invention with specific embodiments.

[0017] In order to make the objectives, technical solutions, and advantages of the present invention clearer, the present invention is further described in detail below with reference to the embodiments. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0018] In the description of the present invention, it should be understood that the orientation or positional relationships indicated by the terms "upper", "lower", "horizontal", "inner", "outer", etc. are based on the orientation or positional relationships in the technical solution, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention. Example 1

[0019] A high-performance modified ethylene propylene diene monomer (EPDM) rubber, comprising the following components in parts by weight: 80 parts of poly(p-phenyleneterephthalamide) carbon fiber and high-strength glass fiber modified EPDM rubber, 40 parts of polysiloxane and hexafluorobutyl acrylate double-modified silicone rubber, 30 parts of polyimide and ultra-high molecular weight polyethylene double-modified polyurethane rubber, 20 parts of poly(p-phenyleneterephthalamide) carbon fiber and polyacrylamide double-modified bisphenol A epoxy resin, 2 parts of chitosan hydrochloride, 2 parts of nano-silver modified carbon fiber, 4 parts of chitin, 2 parts of organic rare earth, 2 parts of polydopamine, 4 parts of plasticizer, 3 parts of vulcanizing agent, 3 parts of antioxidant, 0.9 part of accelerator, 6 parts of co-crosslinking agent, 42 parts of reinforcing agent, 18 parts of α-olefin, 16 parts of silica aerogel.

[0020] Among them, the α-olefin is hexene; the reinforcing agent includes nano-cellulose, graphene, polyamide fiber, and basalt fiber, and the weight ratio of nano-cellulose, graphene, polyamide fiber, and basalt fiber is 3:1:3:2; the co-crosslinking agent is triallyl isocyanurate; the plasticizer is butyl stearate; the vulcanizing agent is a metal oxide-based vulcanizing agent, the antioxidant is antioxidant RD, and the accelerator is accelerator M.

[0021] A preparation method of the high-performance modified EPDM rubber based on the above, specifically comprising the following steps: S1. Kneading: First, mix poly(p-phenyleneterephthalamide) carbon fiber and high-strength glass fiber modified EPDM rubber, polysiloxane and hexafluorobutyl acrylate double-modified silicone rubber, polyimide and ultra-high molecular weight polyethylene double-modified polyurethane rubber, and poly(p-phenyleneterephthalamide) carbon fiber and polyacrylamide double-modified bisphenol A epoxy resin, and then pulverize them to a mesh number of 100-300. Then, mix chitosan hydrochloride, nano-silver modified carbon fiber, chitin, organic rare earth, and polydopamine and pulverize them to a mesh number of 200-500. Transfer the pulverized materials into a kneader, heat up to the kneading temperature, and then add plasticizer, vulcanizing agent, antioxidant, accelerator, co-crosslinking agent, reinforcing agent, and silica aerogel and mix and knead. S2. Open mill: Transfer the kneaded rubber compound into an open mill. After the temperature is naturally cooled to the open mill temperature, conduct open milling. The rotational speed ratio of the front and rear rollers during open milling is 1:2 - 3, the open mill temperature is 90 - 120 °C, conduct at least 3 passes of thin pass during open milling, and place the rubber compound after open milling in an inert gas environment at 20 - 35 °C for 2 - 5 days; S3. Molding: Transfer the rubber compound after open milling into a hot press and conduct hot press molding and cold press molding in sequence. The hot press molding temperature is 100 - 120 °C, the hot press molding time is 1 - 5 min, and the hot press molding pressure is 10 - 50 MPa; the cold press molding temperature is 20 - 30 °C, the cold press molding time is 10 - 15 min, and the cold press molding pressure is 20 - 80 MPa; S4. Irradiation: Mix the molded rubber compound with α-olefin and place it for 5 - 8 days, and irradiate it with 15 Co γ-rays with an irradiation dose of 500 kGy, an activity of 3.27×10 60 Bq, and an irradiation dose rate of 50 Gy / min to obtain the high-performance modified ethylene propylene diene monomer rubber.

[0022] Furthermore, in step S1, the kneading temperature is 100 - 150 °C, the kneading time is 10 - 30 min, and the kneading rotational speed is 20 - 100 rpm. Example 2

[0023] The difference between this example and Example 1 is as follows: A high-performance modified ethylene propylene diene monomer rubber, comprising the following components in parts by weight: 115 parts of poly(p-phenyleneterephthalamide) carbon fiber and high-strength glass fiber modified ethylene propylene diene monomer rubber, 25 parts of polysiloxane and hexafluorobutyl acrylate double-modified silicone rubber, 25 parts of polyimide and ultra-high molecular weight polyethylene double-modified polyurethane rubber, 15 parts of poly(p-phenyleneterephthalamide) carbon fiber and polyacrylamide double-modified bisphenol A epoxy resin, 1 part of chitosan hydrochloride, 1 part of nano-silver modified carbon fiber, 2 parts of chitin, 1 part of organic rare earth, 1 part of polydopamine, 3 parts of plasticizer, 3 parts of vulcanizing agent, 3 parts of anti-aging agent, 1.2 parts of accelerator, 6 parts of co-crosslinking agent, 25 parts of reinforcing agent, 15 parts of α-olefin, 15 parts of silica aerogel.

[0024] Among them, the α-olefin is decene; the reinforcing agent includes nano-cellulose, graphene, polyamide fiber, and basalt fiber, and the weight ratio of nano-cellulose, graphene, polyamide fiber, and basalt fiber is 3:1:1:1; the co-crosslinking agent is m-phenylene maleimide; the plasticizer is epoxy soybean oil; the vulcanizing agent is a peroxide vulcanizing agent, the anti-aging agent is anti-aging agent MB, and the accelerator is accelerator M. Example 3

[0025] The difference between this embodiment and Embodiments 1 and 2 lies in that: A high-performance modified ethylene propylene diene monomer (EPDM) rubber, comprising the following components in parts by weight: 110 parts of poly(p-phenyleneterephthalamide) carbon fiber and high-strength glass fiber modified EPDM rubber, 30 parts of polysiloxane and hexafluorobutyl acrylate double-modified silicone rubber, 20 parts of polyimide and ultra-high molecular weight polyethylene double-modified polyurethane rubber, 20 parts of poly(p-phenyleneterephthalamide) carbon fiber and polyacrylamide double-modified bisphenol A epoxy resin, 2 parts of chitosan hydrochloride, 2 parts of nano-silver modified carbon fiber, 3 parts of chitin, 1 part of organic rare earth, 2 parts of polydopamine, 4 parts of plasticizer, 3 parts of vulcanizing agent, 3 parts of antioxidant, 1 part of accelerator, 5 parts of co-crosslinking agent, 30 parts of reinforcing agent, 10 parts of α-olefin, 20 parts of silica aerogel.

[0026] Among them, the α-olefin is dodecene; the reinforcing agent includes nano-cellulose, graphene, polyamide fiber, and basalt fiber, and the weight ratio of nano-cellulose, graphene, polyamide fiber, and basalt fiber is 2:1:2:2; the co-crosslinking agent is triallyl isocyanurate; the plasticizer is phthalate; the vulcanizing agent is a metal oxide-based vulcanizing agent, the antioxidant is antioxidant MB, and the accelerator is accelerator D. Example 4

[0027] The difference between this embodiment and Embodiments 1, 2, and 3 lies in that: A high-performance modified EPDM rubber, comprising the following components in parts by weight: 120 parts of poly(p-phenyleneterephthalamide) carbon fiber and high-strength glass fiber modified EPDM rubber, 20 parts of polysiloxane and hexafluorobutyl acrylate double-modified silicone rubber, 10 parts of polyimide and ultra-high molecular weight polyethylene double-modified polyurethane rubber, 10 parts of poly(p-phenyleneterephthalamide) carbon fiber and polyacrylamide double-modified bisphenol A epoxy resin, 1 part of chitosan hydrochloride, 1 part of nano-silver modified carbon fiber, 2 parts of chitin, 1 part of organic rare earth, 1 part of polydopamine, 5 parts of plasticizer, 4 parts of vulcanizing agent, 4 parts of antioxidant, 1.5 parts of accelerator, 8 parts of co-crosslinking agent, 50 parts of reinforcing agent, 20 parts of α-olefin, 10 parts of silica aerogel.

[0028] Among them, the α-olefin is hexadecene; the reinforcing agent includes nano-cellulose, graphene, polyamide fiber, and basalt fiber, and the weight ratio of nano-cellulose, graphene, polyamide fiber, and basalt fiber is 3:1:5:2; the co-crosslinking agent is hexamethylenebisthiuram hexasulfide; the plasticizer is butyl stearate; the vulcanizing agent is a peroxide-based vulcanizing agent, the antioxidant is antioxidant MB, and the accelerator is accelerator M. Example 5

[0029] The difference between this embodiment and Embodiments 1, 2, 3, and 4 lies in that: A high-performance modified ethylene propylene diene monomer (EPDM) rubber, comprising the following components in parts by weight: 120 parts of poly(p-phenylene terephthalamide) carbon fiber and high-strength glass fiber modified EPDM rubber, 40 parts of polysiloxane and hexafluorobutyl acrylate double-modified silicone rubber, 30 parts of polyimide and ultra-high molecular weight polyethylene double-modified polyurethane rubber, 15 parts of poly(p-phenylene terephthalamide) carbon fiber and polyacrylamide double-modified bisphenol A epoxy resin, 3 parts of chitosan hydrochloride, 2 parts of nano-silver modified carbon fiber, 5 parts of chitin, 2 parts of organic rare earth, 2 parts of polydopamine, 5 parts of plasticizer, 4 parts of vulcanizing agent, 4 parts of antioxidant, 1.5 parts of accelerator, 8 parts of co-crosslinking agent, 50 parts of reinforcing agent, 20 parts of α-olefin, 30 parts of silica aerogel.

[0030] Among them, the α-olefin is 1-octadecene; the reinforcing agent includes nano-cellulose, graphene, polyamide fiber, and basalt fiber, and the weight ratio of nano-cellulose, graphene, polyamide fiber, and basalt fiber is 1:1:1:1; the co-crosslinking agent is trimethylolpropane triacrylate; the plasticizer is dioctyl sebacate; the vulcanizing agent is a metal oxide-based vulcanizing agent, the antioxidant is antioxidant RD, and the accelerator is accelerator D.

[0031] In the present invention, first, the EPDM rubber is modified with carbon fiber and glass fiber, then other similarly modified rubbers and resins are added for mixing, and then the EPDM rubber is modified with α-olefin. The α-olefin crosslinks with the EPDM rubber to form a three-dimensional network structure, improving the tolerance of the EPDM rubber to extreme environments. Then, by adding chitosan hydrochloride, nano-silver, chitin, organic rare earth, and polydopamine to strengthen the performance of the EPDM rubber, the antibacterial, fireproof, and flame-retardant properties of the EPDM rubber are greatly enhanced, expanding its application range, increasing its application value, and extending its service life.

[0032] The above has introduced in detail the technical solutions disclosed in the embodiments of the present invention. In this article, specific embodiments are used to elaborate the principles and implementation manners of the embodiments of the present invention. The descriptions of the above embodiments are only applicable to help understand the principles of the embodiments of the present invention; at the same time, for those of ordinary skill in the art, according to the embodiments of the present invention, there will be changes in the specific implementation manners and application scopes. In summary, the content of this specification should not be construed as a limitation to the present invention.

Claims

1. A high-performance modified ethylene propylene diene monomer rubber, characterized in that: It comprises the following components in parts by weight: 80 - 120 parts of poly(p-phenylene terephthalamide) carbon fiber and high-strength glass fiber modified ethylene propylene diene monomer rubber, 20 - 40 parts of polysiloxane and hexafluorobutyl acrylate double-modified silicone rubber, 10 - 30 parts of polyimide and ultra-high molecular weight polyethylene double-modified polyurethane rubber, 10 - 20 parts of poly(p-phenylene terephthalamide) carbon fiber and polyacrylamide double-modified bisphenol A epoxy resin, 1 - 3 parts of chitosan hydrochloride, 1 - 2 parts of nano silver modified carbon fiber, 2 - 5 parts of chitin, 1 - 2 parts of organic rare earth, 1 - 2 parts of polydopamine, 2 - 5 parts of plasticizer, 2 - 4 parts of vulcanizing agent, 1 - 4 parts of anti-aging agent, 0.2 - 1.5 parts of accelerator, 2 - 8 parts of co-crosslinking agent, 5 - 50 parts of reinforcing agent, 1 - 20 parts of α-olefin, 10 - 30 parts of silica aerogel.

2. The high-performance modified ethylene propylene diene monomer rubber according to claim 1, wherein: The α-olefin is hexene, heptene, octene, nonene, decene, undecene, dodecene, tridecene, tetradecene, pentadecene, hexadecene, heptadecene or octadecene.

3. The high-performance modified ethylene propylene diene monomer rubber according to claim 1, characterized in that: The reinforcing agent includes nano cellulose, graphene, polyamide fiber, basalt fiber, and the weight ratio of nano cellulose, graphene, polyamide fiber, basalt fiber is 1 - 3:1:1 - 5:1 - 2.

4. The high-performance modified ethylene propylene diene monomer rubber according to claim 1, wherein: The co-crosslinking agent is 1,2-polybutadiene, triallyl isocyanurate, m-phenylene maleimide, hexamethylenebisthiuram hexasulfide or trimethylolpropane triacrylate.

5. The high-performance modified ethylene propylene diene monomer rubber according to claim 1, wherein: The plasticizer is phthalate, butyl oleate, glyceryl triacetate, epoxy soybean oil, butyl stearate or dioctyl sebacate.

6. The high-performance modified ethylene propylene diene monomer rubber according to claim 1, characterized in that: The vulcanizing agent is a metal oxide vulcanizing agent or a peroxide vulcanizing agent, the anti-aging agent is anti-aging agent RD or anti-aging agent MB, and the accelerator is accelerator D or accelerator M.

7. A preparation method of the high-performance modified ethylene propylene diene monomer rubber according to any one of claims 1 to 6, characterized in that: The preparation method specifically includes the following steps: S1. Internal mixing: First, mix poly(p-phenylene terephthalamide) carbon fiber and high-strength glass fiber modified ethylene propylene diene monomer rubber, polysiloxane and hexafluorobutyl acrylate double-modified silicone rubber, polyimide and ultra-high molecular weight polyethylene double-modified polyurethane rubber, and poly(p-phenylene terephthalamide) carbon fiber and polyacrylamide double-modified bisphenol A epoxy resin, and then crush them, with the crushing mesh number being 100 - 300 meshes. Then, mix chitosan hydrochloride, nano silver modified carbon fiber, chitin, organic rare earth, and polydopamine and crush them, with the crushing mesh number being 200 - 500 meshes. Transfer the crushed materials into an internal mixer, heat up to the internal mixing temperature, and then add the plasticizer, vulcanizing agent, anti-aging agent, accelerator, co-crosslinking agent, reinforcing agent, and silica aerogel for internal mixing. S2. Open mixing: Transfer the internally mixed rubber compound into an open mill, naturally cool the temperature to the open mixing temperature, and then conduct open mixing. The rotational speed ratio of the front and rear rollers during open mixing is 1:2 - 3, the open mixing temperature is 90 - 120 °C, and the rubber compound is passed through at least 3 times during open mixing. The open-mixed rubber compound is placed in an inert gas environment at 20 - 35 °C for 2 - 5 days. S3. Molding: Transfer the kneaded rubber compound into a hot press for hot pressing and cold pressing in sequence. The hot pressing temperature is 100 - 120 °C, the hot pressing time is 1 - 5 min, and the hot pressing pressure is 10 - 50 MPa; the cold pressing temperature is 20 - 30 °C, the cold pressing time is 10 - 15 min, and the cold pressing pressure is 20 - 80 MPa; S4. Irradiation: The formed rubber compound is mixed with α-olefin and left for 5 - 8 days, and then irradiated with 15 Co γ-rays with an irradiation dose of 500 kGy, an activity of 3.27×10 60 Bq, and an irradiation dose rate of 50 Gy / min to obtain the high-performance modified ethylene-propylene-diene monomer rubber.

8. The preparation method of the high-performance modified ethylene-propylene-diene monomer rubber according to claim 7, wherein: In the step S1, the kneading temperature is 100 - 150 °C, the kneading time is 10 - 30 min, and the kneading speed is 20 - 100 rpm.