A new energy air suspension upper top glue resistant to high and low temperature and a preparation method thereof

Abstract

The application relates to the field of automobile suspension systems, in particular to a high-low temperature-resistant new energy air suspension upper top rubber and a preparation method thereof, which are used for solving the problem that the existing upper top rubber is easily affected by temperature changes, thereby leading to performance decline; a nitrile rubber matrix is hydrogenated, the main chain is saturated, a stable crosslinking network under high temperature is provided, a strong interface is combined, high strength and low deformation are realized, modified nitrile rubber and butadiene rubber are synergized, the temperature resistance of the material is improved; modified carbonized fiber is used as a short fiber reinforcing body, the modulus, the modulus at a certain elongation and the tear resistance of the material are improved, the compression permanent deformation is reduced, rubber infiltrates the surface of the carbonized fiber, and the temperature resistance of the composite material is improved; organic montmorillonite can effectively block the penetration of oxygen and heat, improve the heat aging resistance, and white carbon black provides excellent tensile strength, wear resistance and cutting resistance, and the three synergistically provide a multi-scale, high-durability reinforcing network; a silane coupling agent enhances the interface combination of the filler and the rubber.

Description

Technical Field

[0001] This invention relates to the field of automotive suspension systems, specifically to a high and low temperature resistant new energy air suspension top rubber and its preparation method. Background Technology

[0002] With the development of new energy vehicles, the vehicle suspension system also needs to adapt to new technical requirements. In new energy vehicles, air suspension is one of the important systems that provides stability and comfort. The performance of its top mount directly affects the reliability of the entire system. The top mount is an important component installed in the vehicle suspension system, which plays a role in buffering and shock absorption during vehicle operation.

[0003] Currently, various types of air suspension systems have emerged on the market. However, traditional top mounts are easily affected by temperature changes. They tend to soften in high-temperature environments and harden and become brittle in low-temperature environments. This not only shortens the service life but also affects the vehicle's driving performance. In particular, the performance of the air suspension system will significantly decrease in extreme high or low temperature environments, affecting the vehicle's stability and handling.

[0004] Therefore, the high and low temperature resistant new energy air suspension top rubber and its preparation method of the present invention are of great significance for improving the performance of the suspension system of new energy vehicles. Summary of the Invention

[0005] In order to overcome the above-mentioned technical problems, the purpose of this invention is to provide a high and low temperature resistant new energy air suspension top adhesive and its preparation method, which solves the problem that the existing top adhesive is easily affected by temperature changes, resulting in performance degradation.

[0006] The objective of this invention can be achieved through the following technical solutions: In a first aspect, this application provides a high and low temperature resistant new energy air suspension top adhesive, comprising the following components by weight: 100 parts modified nitrile rubber, 70-80 parts ethylene-butadiene rubber, 5-15 parts modified carbon fiber, 10-20 parts organic montmorillonite, 30-50 parts silica, 1-3 parts crosslinking agent, 2-4 parts crosslinking aid, 1-2 parts vulcanizing agent, 5-15 parts plasticizer, 1-3 parts antioxidant, 5-8 parts zinc oxide, 2-4 parts silane coupling agent, and 0.3-0.8 parts sulfur; The ethylene-butyl rubber is manufactured by Mitsui Chemicals, Inc. of Japan, and its model number is K8370EM; the crosslinking agent is model number BIPB-40; the crosslinking aid is model number TAIC-70; the silica is model number R974; the vulcanizing agent is dicumyl peroxide; the plasticizer is model number JH-95; the antioxidant is model number 4010NA; and the silane coupling agent is bis-(γ-triethoxysilylpropyl)tetrasulfide.

[0007] In a preferred embodiment of the present invention, the modified nitrile rubber is prepared by the following steps: Step a1: Add nitrile rubber and the first portion of chlorobenzene to a three-necked flask equipped with a stirrer and thermometer, mix and stir for 30 min, transfer to a constant temperature oil bath at 40℃, add formic acid and hydrogen peroxide solution, stir and react for 6 h, cool naturally to 25℃, flocculate in anhydrous ethanol 2-3 times, wash 1-2 times with distilled water, dry in a forced-air drying oven at 50-60℃ for 6-8 h, add the second portion of chlorobenzene, mix and stir for 30 min, add catalyst, place in a high-pressure reactor, purge with nitrogen 3 times and hydrogen 3 times at a stirring speed of 70-80 r / min, finally purge with hydrogen to 3 MPa, heat to 50-80℃, react for 4 h, cool naturally to 25℃, use molecular sieve to adsorb catalyst, obtain intermediate 1; the amount of the first portion of chlorobenzene accounts for 1 / 2 of the total amount of chlorobenzene; the amount of the second portion of chlorobenzene accounts for 1 / 2 of the total amount of chlorobenzene; Step a2: Add intermediate 1, aminoimidazolium monomer and catalyst to a three-necked flask equipped with a stirrer and thermometer. Under a nitrogen atmosphere, heat to 80-110℃ and react for 4-8 hours. After the reaction is complete, cool naturally to 25℃, precipitate with anhydrous ethanol, wash 2-3 times with deionized water, and transfer to a 50℃ forced-air drying oven to dry for 5-6 hours to obtain the precursor. Step a3: Add epoxy resin to a three-necked flask equipped with a stirrer and thermometer, place it in a constant temperature oil bath at 70-75℃ and stir for 30 minutes. Add the precursor and curing agent, continue stirring for 1-2 hours, degas under vacuum, and cure at 150-160℃ for 2-3 hours to obtain the matrix material. Add fluororubber to a two-roll mill for roll plasticizing, add zinc oxide, magnesium oxide, carbon black, crosslinking aid and crosslinking agent, mix for 20-30 minutes, let stand for 24 hours, and then place it on a flat vulcanizing bed for vulcanization: first stage vulcanization at 170℃ for 4-5 minutes, second stage vulcanization at 200℃ for 4 hours to obtain the composite material. Step a4: Add the matrix material and composite material to a two-roll open mill for plasticizing and blending to obtain a rubber mixture; add fullerene and tetrahydrofuran to a beaker and sonicate for 3 hours, add the rubber mixture, mix and stir for 3 hours, evaporate under reduced pressure at 60-65℃ for 1-2 hours, vacuum dry at 80℃ for 48 hours, add stearic acid, zinc oxide, antioxidant, crosslinking aid, reinforcing agent and vulcanizing agent, form triangular bundles and roll 2-3 times, let stand for 24 hours, and then continue vulcanization using a flat vulcanizing bed: first stage vulcanization at 170℃ for 3-8 minutes, second stage vulcanization at 150℃ for 4 hours to obtain modified nitrile rubber.

[0008] In a preferred embodiment of the present invention, the ratio of the amount of nitrile rubber, total chlorobenzene, formic acid, hydrogen peroxide solution and catalyst in step a1 is 95-100g: 2000-2200mL: 1-3mL: 6-8mL: 1.5-2g; the type of nitrile rubber is NBR-2707; the mass fraction of the hydrogen peroxide solution is 30%; and the catalyst is palladium.

[0009] In a preferred embodiment of the present invention, the ratio of intermediate 1, aminoimidazolium monomer, and catalyst in step a2 is 90-100 mL: 1-2 g: 0.1-0.2 g; the aminoimidazolium monomer is one of 2-aminoimidazolium, β-aminoethylimidazolium, and 1-(3-aminopropyl)imidazolium; the catalyst is one of Zn(ClO4)2·6H2O, CH3COOH, tetrabutylammonium bromide, and potassium hydroxide.

[0010] In a preferred embodiment of the present invention, the ratio of epoxy resin, precursor, curing agent, fluororubber, zinc oxide, magnesium oxide, carbon black, crosslinking aid, and crosslinking agent in step a3 is 90-100mL:10-20g:50-70mL:100g:5-10g:5-10g:20-40g:2-4g:2-3g; the epoxy resin is E51; the curing agent is polyamide 651; the fluororubber is ETP-600S; the crosslinking aid is one of TAIC-70, SR350, and SR517; and the crosslinking agent is one of α,α'-bis(tert-butylperoxy)diisopropylbenzene, tert-butanol hydroperoxide, and di-tert-butyl peroxide.

[0011] In a preferred embodiment of the present invention, the ratio of the matrix material, composite material, fullerene, tetrahydrofuran, stearic acid, zinc oxide, antioxidant, crosslinking aid, reinforcing agent, and vulcanizing agent in step a4 is 45-50g: 45-50g: 1-5g: 200-300mL: 1-2g: 3-5g: 1-3g: 1-3g: 15-35g: 1.5-3g; the fullerene is of type C. 60 The antioxidant is Naugard 445; the crosslinking aid is one of TAIC-70, SR350, and SR517; the reinforcing agent is zinc methacrylate; and the vulcanizing agent is dicumyl peroxide.

[0012] In a preferred embodiment of the present invention, the modified carbonized fiber is prepared by the following steps: Step b1: Pre-oxidize polyacrylonitrile fibers at 210-275℃ in air for 2-3 hours, place them in a reactor, and purge with nitrogen for protection. Use a 6-stage gradient heating: the first stage heats to 450℃ at a rate of 5-10℃ / min; the second stage heats to 500℃ at a rate of 1-2℃ / min and holds for 1-1.5 hours; the third stage heats to 600℃ at a rate of 1-2℃ / min and holds for 0.5-1 hours; the fourth stage heats to 700℃ at a rate of 2-5℃ / min and holds for 20-40 minutes; the fifth stage heats to 750℃ at a rate of 2-5℃ and holds for 10-30 minutes; the sixth stage heats to 800℃ at a rate of 2-5℃ / min and holds for 5-15 minutes. Allow to cool naturally to 25℃, then cut into short sections with scissors to obtain carbonized fibers. Step b2: Add carbonized fiber and thionyl chloride solution to a three-necked flask equipped with a stirrer and thermometer, react at 80℃ for 3-5 hours, filter, wash carbonized fiber 2-3 times with N,N-dimethylformamide, add melamine solution, react at 80℃ for 3-5 hours, filter, wash carbonized fiber 2-3 times with N,N-dimethylformamide, add trimesoyl chloride solution, react at 80℃ for 1-3 hours, filter, wash carbonized fiber 2-3 times with N,N-dimethylformamide, add p-phenylenediamine solution, react at 80℃ for 1-3 hours, filter, wash carbonized fiber 2-3 times with N,N-dimethylformamide and anhydrous ethanol respectively, and dry in a vacuum drying oven at 80℃ for 5-6 hours to obtain modified carbonized fiber.

[0013] In a preferred embodiment of the present invention, the polyacrylonitrile fiber in step b1 is produced by Hoechst AG in Germany and is model Dolanit VF11.

[0014] In a preferred embodiment of the present invention, the ratio of the carbonized fiber, thionyl chloride solution, melamine solution, trimesoyl chloride solution, and p-phenylenediamine solution in step b2 is 5-10 g: 100 mL: 100 mL: 50 mL: 100 mL; the concentration of the thionyl chloride solution is 0.25 mol / L, and the solvent is N,N-dimethylformamide; the concentration of the melamine solution is 0.15 mol / L, and the solvent is N,N-dimethylformamide; the concentration of the trimesoyl chloride solution is 0.2 mol / L, and the solvent is N,N-dimethylformamide; the concentration of the p-phenylenediamine solution is 0.15 mol / L, and the solvent is N,N-dimethylformamide.

[0015] Secondly, this application provides a method for preparing a high and low temperature resistant new energy air suspension top adhesive, comprising the following steps: Step 1: Weigh out the following components by weight: 100 parts modified nitrile rubber, 70-80 parts ethylene-butadiene rubber, 5-15 parts modified carbon fiber, 10-20 parts organic montmorillonite, 30-50 parts silica, 1-3 parts crosslinking agent, 2-4 parts crosslinking aid, 1-2 parts vulcanizing agent, 5-15 parts plasticizer, 1-3 parts antioxidant, 5-8 parts zinc oxide, 2-4 parts silane coupling agent, and 0.3-0.8 parts sulfur. Step 2: Put the modified nitrile rubber and ethylene butadiene rubber into a mixer and plasticize for 1-2 minutes. Add plasticizer, zinc oxide and antioxidant, and mix at 50-100℃ for 2-3 minutes. Add half of the weight of silica, organic montmorillonite and modified carbon fiber, and mix at 110-130℃ for 3-5 minutes. Add the remaining half of the weight of silica and silane coupling agent, and mix at 140-150℃ for 2-3 minutes. Discharge the rubber, place it on a two-roll mill to press into sheets, and let it stand at 25℃ for 24 hours to obtain a first-stage masterbatch. Step 3: Place a section of masterbatch on a two-roll mill and roll it at 50-60℃. Add crosslinking aid, crosslinking agent, vulcanizing agent and sulfur. Turn the mixture with left and right cutters, then pass it through a thin mill 2-3 times, and roll it into a triangular shape 5-8 times. Produce the sheet and let it stand at 25℃ for 24 hours. Fill it into a mold and place it in a flat vulcanizing machine. Vulcanize it at 170-175℃ and 15-20MPa for 4-6 minutes. Place it in a forced-air drying oven and vulcanize it at 150℃ for 4 hours. Let it cool naturally to 25℃ to obtain a high and low temperature resistant new energy air suspension top rubber.

[0016] The beneficial effects of this invention are: This invention discloses a high- and low-temperature resistant new energy air suspension top rubber and its preparation method. Modified nitrile rubber and ethylene-butyl rubber are plasticized in a mixer, plasticizer, zinc oxide, and antioxidant are added, and the mixture is heated and mixed. Silica, organic montmorillonite, and modified carbon fiber are added, and the mixture is heated and mixed again. Silica and silane coupling agent are added, and the mixture is heated and mixed again. The rubber is discharged, pressed into sheets on a two-roll mill, and left to stand, yielding a first-stage masterbatch. The masterbatch is then placed on a two-roll mill, rolled, and crosslinking aid, crosslinking agent, vulcanizing agent, and sulfur are added. The mixture is then folded using left and right cutters, thinly passed through, formed into triangular sheets, sheeted, left to stand, and placed in a flat vulcanizing machine for vulcanization. Finally, it is placed in a forced-air drying oven for vulcanization and allowed to cool naturally, yielding the high- and low-temperature resistant new energy air suspension top rubber. The modified nitrile rubber and ethylene-butyl rubber work synergistically to improve the material's temperature resistance. Performance: Modified carbonized fiber, as a short fiber reinforcement, improves the material's modulus, tensile stress, and tear resistance, while reducing compression set. The prepared top rubber maintains excellent shape recovery and sealing pressure over a long period at high temperatures, reducing the risk of air leakage and collapse in the air suspension system due to seal failure. In low-temperature environments, the material retains good flexibility and elasticity, without hardening or becoming brittle, ensuring proper cushioning during cold starts and in frigid regions. The top rubber also exhibits good tear strength and excellent dynamic fatigue resistance, effectively resisting crack initiation and propagation under complex stresses. It maintains stable performance after compression-rebound cycles, demonstrating stable material structure, excellent wear resistance, and superior aging resistance, enabling long-term resistance to harsh environments and media erosion.

[0017] In the preparation of the high and low temperature resistant new energy air suspension top adhesive, modified nitrile rubber was first prepared. Formic acid reacted with hydrogen peroxide to generate peroxyformic acid, which reacted with the carbon-carbon double bonds in the nitrile rubber to generate epoxy groups. Under the action of palladium catalyst, hydrogenation modification was carried out by solution hydrogenation to hydrogenate the remaining carbon-carbon double bonds on the molecular chain into saturated single bonds. The hydrogenation reaction improved the temperature resistance of the material, and the introduction of epoxy groups provided sites for the next grafting step. The primary amino group in the aminoimidazolium monomer underwent a nucleophilic ring-opening reaction with the epoxy groups, covalently grafting the imidazolium ring onto the rubber chain, thus fixing the imidazolium functional group containing nitrogen heterocycles onto the rubber molecular chain by covalent bonds. The imidazole ring enhances the polarity of the rubber, and its strong polarity and coordination ability allow it to interact physically and chemically with the surfaces of modified carbon fibers and silica fillers, improving the filler-rubber interface adhesion, forming a dense and stable network, and reducing compression set. The precursor is used as a toughening agent and anti-aging agent for epoxy resin to prepare the matrix material. The combination of these two components improves the tensile strength, elongation at break, and impact strength of the material. Carbon black is used to fill fluororubber to obtain a composite material. Physical blending of the matrix material and the composite material imparts good temperature resistance to the rubber. Fullerenes exhibit excellent free radical scavenging effects in the material, improving its aging coefficient.

[0018] In the preparation of the high and low temperature resistant new energy air suspension top adhesive, modified carbonized fibers were first prepared. Polyacrylonitrile fibers underwent cyclization, dehydrogenation, and oxidation reactions in hot air, forming a heat-resistant ladder-like polymer structure. This transformed the linear polyacrylonitrile macromolecules into a stable, non-melting, and non-flammable structure, allowing it to maintain its fiber morphology during subsequent high-temperature carbonization. Under nitrogen protection, a gradient heating process was carried out, resulting in thermal decomposition and aromatization condensation reactions, increasing the carbon content and forming a high-strength, high-modulus carbonized fiber body with extremely high specific strength and specific modulus, suitable as a short fiber. Adding thionyl chloride to rubber improves the elongation stress, compression set resistance, and dimensional stability of the compound. Thionyl chloride reacts with carboxyl groups on the fiber surface to produce acyl chloride bonds, which have higher reactivity. The amino groups in melamine undergo nucleophilic addition reactions with acyl chloride groups to form amide bonds. The remaining amino groups in melamine continue to react with trimesoyl chloride, providing more reaction sites. p-Phenylenediamine can react with acidic monomers containing chlorine atoms; therefore, p-Phenylenediamine can react with unreacted acyl chloride bonds of trimesoyl chloride to form amide bonds. By combining melamine and trimesoyl chloride, more active reaction sites are formed on the surface of carbonized fibers, ultimately constructing a rigid branched structure on the fiber surface. The introduction of the rigid branched structure not only improves the surface roughness but also enhances the surface wettability of the fibers, reduces the contact angle between the fibers and the matrix, and strengthens the interfacial bonding. The modified composite material exhibits excellent mechanical properties and temperature resistance. During the grafting process, the branched polymer repairs fiber surface defects and fills fiber surface grooves. At the same time, the rigid branched structure, rich in benzene rings, has a certain enhancing effect on the mechanical properties of carbonized fibers, improving the surface properties of the fibers and thus enhancing their mechanical properties, which helps to improve the tensile strength of carbonized fiber monofilaments. The presence of melamine in the branched polymer helps to improve the temperature resistance of the composite material because melamine absorbs heat and releases ammonia gas at high temperatures, which has a certain protective effect on the silicone matrix. The introduction of the branched polymer enhances the interfacial bonding between the fibers and the matrix, allowing the silicone rubber to fully wet the surface of the carbonized fibers, which helps to improve the temperature resistance of the composite material. Attached Figure Description

[0019] The invention will now be further described with reference to the accompanying drawings.

[0020] Figure 1 This is a schematic diagram showing the tensile strength test results of the top rubber of the high and low temperature resistant new energy air suspension in Examples 1-3 and Comparative Examples 1-3 of the present invention.

[0021] Figure 2 This is a schematic diagram showing the tear strength test results of the top rubber of the high and low temperature resistant new energy air suspension in Examples 1-3 and Comparative Examples 1-3 of the present invention.

[0022] Figure 3This is a schematic diagram showing the compression set test results of the high and low temperature resistant new energy air suspension top rubber of Examples 1-3 and Comparative Examples 1-3 in this invention under low temperature (-50℃), room temperature (25℃) and high temperature (100℃) environments, respectively. Detailed Implementation

[0023] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0024] Example 1:

[0025] This embodiment describes a method for preparing a high and low temperature resistant top adhesive for new energy air suspension systems, comprising the following steps: Step S1: Add 95g of NBR-2707 nitrile rubber and 1000mL of chlorobenzene to a three-necked flask equipped with a stirrer and thermometer. Mix and stir for 30min. Transfer to a constant temperature oil bath at 40℃. Add 1mL of formic acid and 6mL of 30% hydrogen peroxide solution. Stir and react for 6h. Allow to cool naturally to 25℃. Flocculate twice in anhydrous ethanol, wash once with distilled water, and dry in a 50℃ forced-air drying oven for 6h. Add 1000mL of chlorobenzene and mix and stir for 30min. Add 1.5g of palladium and place in a high-pressure reactor. Purge and purge nitrogen three times and hydrogen three times at a stirring speed of 70r / min. Finally, purge with hydrogen to 3MPa, raise the temperature to 50℃, and react for 4h. Allow to cool naturally to 25℃. Use molecular sieve adsorption catalyst to obtain intermediate 1. Step S2: Add 90 mL of intermediate 1, 1 g of 2-aminoimidazole and 0.1 g of potassium hydroxide to a three-necked flask equipped with a stirrer and thermometer. Under a nitrogen atmosphere, heat to 80 °C and react for 4 h. After the reaction is complete, cool naturally to 25 °C, precipitate with anhydrous ethanol, wash twice with deionized water, and transfer to a 50 °C forced-air drying oven to dry for 5 h to obtain the precursor. Step S3: Add 90 mL of epoxy resin E51 to a three-necked flask equipped with a stirrer and thermometer, place it in a constant temperature oil bath at 70℃ and stir for 30 min. Add 10 g of precursor and 50 mL of polyamide 651, continue stirring for 1 h, degas under vacuum, and cure at 150℃ for 2 h to obtain the matrix material. Add 100 g of fluororubber ETP-600S to a two-roll mill for roll plasticizing, add 5 g of zinc oxide, 5 g of magnesium oxide, 20 g of carbon black, 2 g of crosslinking aid SR517 and 2 g of hydrogen peroxide tert-butanol, mix for 20 min, let stand for 24 h, and then place it on a flat vulcanizing bed for vulcanization: first stage vulcanization at 170℃×4 min, second stage vulcanization at 200℃×4 h to obtain the composite material. Step S4: Add 45g of matrix material and 45g of composite material to a two-roll mill for plasticizing and blending to obtain a rubber mixture; add 1g of fullerene C 60 200 mL of tetrahydrofuran was added to a beaker and ultrasonically treated for 3 h. The rubber mixture was added and stirred for 3 h. The mixture was evaporated under reduced pressure at 60 °C for 1 h and vacuum dried at 80 °C for 48 h. 1 g of stearic acid, 3 g of zinc oxide, 1 g of antioxidant Naugard 445, 1 g of crosslinking aid SR517, 15 g of zinc methacrylate and 1.5 g of dicumyl peroxide were added. The mixture was wrapped in a triangular shape and rolled twice. After standing for 24 h, it was vulcanized in a flat vulcanizing bed: the first vulcanization was carried out at 170 °C for 3 min and the second vulcanization was carried out at 150 °C for 4 h to obtain modified nitrile rubber. Step S5: Pre-oxidize the polyacrylonitrile fiber Dolanit VF11 at 210℃ in air for 2 hours, place it in a reactor, and purge with nitrogen for protection. Use a 6-stage gradient heating: the first stage heats up to 450℃ at a rate of 5℃ / min, the second stage heats up to 500℃ at a rate of 1℃ / min and holds for 1 hour, the third stage heats up to 600℃ at a rate of 1℃ / min and holds for 0.5 hours, the fourth stage heats up to 700℃ at a rate of 2℃ / min and holds for 20 minutes, the fifth stage heats up to 750℃ at a rate of 2℃ and holds for 10 minutes, and the sixth stage heats up to 800℃ at a rate of 2℃ / min and holds for 5 minutes. Allow it to cool naturally to 25℃, and cut it into short pieces with scissors to obtain carbonized fiber. Step S6: Add 5g of carbonized fiber and 100mL of thionyl chloride solution to a three-necked flask equipped with a stirrer and thermometer. React at 80℃ for 3 hours, filter, wash the carbonized fiber twice with N,N-dimethylformamide, add 100mL of melamine solution, react at 80℃ for 3 hours, filter, wash the carbonized fiber twice with N,N-dimethylformamide, add 50mL of trimesoyl chloride solution, react at 80℃ for 1 hour, filter, wash the carbonized fiber twice with N,N-dimethylformamide, add 100mL of p-phenylenediamine solution, react at 80℃ for 1 hour, filter. The carbonized fibers were washed twice with N,N-dimethylformamide and anhydrous ethanol, respectively, and dried in a vacuum drying oven at 80°C for 5 hours to obtain modified carbonized fibers. The concentration of the thionyl chloride solution was 0.25 mol / L, and the solvent was N,N-dimethylformamide; the concentration of the melamine solution was 0.15 mol / L, and the solvent was N,N-dimethylformamide; the concentration of the trimesoyl chloride solution was 0.2 mol / L, and the solvent was N,N-dimethylformamide; the concentration of the p-phenylenediamine solution was 0.15 mol / L, and the solvent was N,N-dimethylformamide. Step S7: Weigh out 100 parts by weight of modified nitrile rubber, 70 parts by weight of ethylene butadiene rubber K8370EM, 5 parts by weight of modified carbon fiber, 10 parts by weight of organic montmorillonite, 30 parts by weight of silica, 1 part by weight of crosslinking agent BIPB-40, 2 parts by weight of crosslinking aid TAIC-70, 1 part by weight of dicumyl peroxide, 5 parts by weight of plasticizer JH-95, 1 part by weight of antioxidant 4010NA, 5 parts by weight of zinc oxide, 2 parts by weight of bis-(γ-triethoxysilylpropyl)tetrasulfide and 0.3 parts by weight of sulfur; Step S8: Put the modified nitrile rubber and ethylene butadiene rubber into a mixer and plasticize for 1 minute. Add plasticizer, zinc oxide and antioxidant, mix at 50°C for 2 minutes. Add 15 parts of silica, organic montmorillonite and modified carbon fiber, mix at 110°C for 3 minutes. Add 15 parts of silica and silane coupling agent, mix at 140°C for 2 minutes. Discharge the rubber, place it on a two-roll mill to press into sheets, and let it stand at 25°C for 24 hours to obtain a masterbatch. Step S9: Place a section of masterbatch on a two-roll mill and roll it at 50°C. Add crosslinking aid, crosslinking agent, vulcanizing agent and sulfur. Turn the mixture with left and right cutters, then pass it through a thin mill twice, roll it into a triangular shape five times, and then sheet it out. Let it stand at 25°C for 24 hours, fill it into a mold, place it in a flat vulcanizing machine, and vulcanize it at 170°C and 15MPa for 4 minutes. Then put it in a forced-air drying oven and vulcanize it at 150°C for 4 hours. Let it cool naturally to 25°C to obtain a high and low temperature resistant new energy air suspension top rubber.

[0026] Example 2:

[0027] This embodiment describes a method for preparing a high and low temperature resistant top adhesive for new energy air suspension systems, comprising the following steps: Step S1: Add 98g of NBR-2707 nitrile rubber and 1050mL of chlorobenzene to a three-necked flask equipped with a stirrer and thermometer. Mix and stir for 30min. Transfer to a constant temperature oil bath at 40℃. Add 2mL of formic acid and 7mL of 30% hydrogen peroxide solution. Stir and react for 6h. Allow to cool naturally to 25℃. Flocculate three times in anhydrous ethanol. Wash twice with distilled water. Dry in a 55℃ forced-air drying oven for 7h. Add 1050mL of chlorobenzene. Mix and stir for 30min. Add 1.8g of palladium. Place in a high-pressure reactor. Purge and purge nitrogen three times and hydrogen three times at a stirring speed of 75r / min. Finally, purge with hydrogen to 3MPa. Heat to 65℃ and react for 4h. Allow to cool naturally to 25℃. Use molecular sieve to adsorb the catalyst to obtain intermediate 1. Step S2: Add 95 mL of intermediate 1, 1.5 g of 2-aminoimidazole and 0.15 g of potassium hydroxide to a three-necked flask equipped with a stirrer and thermometer. Under a nitrogen atmosphere, heat to 95 °C and react for 6 h. After the reaction is complete, cool naturally to 25 °C, precipitate with anhydrous ethanol, wash 3 times with deionized water, and transfer to a 50 °C forced-air drying oven to dry for 5.5 h to obtain the precursor. Step S3: Add 95 mL of epoxy resin E51 to a three-necked flask equipped with a stirrer and thermometer, place it in a constant temperature oil bath at 73°C and stir for 30 min. Add 15 g of precursor and 60 mL of polyamide 651, continue stirring for 1.5 h, degas under vacuum, and cure at 155°C for 2.5 h to obtain the matrix material. Add 100 g of fluororubber ETP-600S to a two-roll mill for roll plasticizing, add 8 g of zinc oxide, 8 g of magnesium oxide, 30 g of carbon black, 3 g of crosslinking aid SR517 and 2.5 g of hydrogen peroxide tert-butanol, mix for 25 min, let stand for 24 h, and then vulcanize on a flat vulcanizing bed: first stage vulcanization at 170°C for 5 min, second stage vulcanization at 200°C for 4 h to obtain the composite material. Step S4: Add 48g of matrix material and 48g of composite material to a two-roll mill for plasticizing and blending to obtain a rubber mixture; add 3g of fullerene C 60 250 mL of tetrahydrofuran was added to a beaker and ultrasonically treated for 3 h. The rubber mixture was added and stirred for 3 h. The mixture was then evaporated under reduced pressure at 63 °C for 1.5 h and vacuum dried at 80 °C for 48 h. 1.5 g of stearic acid, 4 g of zinc oxide, 2 g of antioxidant Naugard 445, 2 g of crosslinking aid SR517, 25 g of zinc methacrylate, and 2 g of dicumyl peroxide were added. The mixture was then wrapped in a triangular shape and rolled three times. After standing for 24 h, it was vulcanized again using a flat vulcanizing bed: first stage vulcanization at 170 °C for 5 min and second stage vulcanization at 150 °C for 4 h to obtain modified nitrile rubber. Step S5: Pre-oxidize the polyacrylonitrile fiber Dolanit VF11 at 240℃ in air for 2.5h, place it in a reactor, and purge with nitrogen for protection. Use a 6-stage gradient heating: the first stage heats up to 450℃ at a rate of 8℃ / min, the second stage heats up to 500℃ at a rate of 1.5℃ / min and holds for 1.5h, the third stage heats up to 600℃ at a rate of 1.5℃ / min and holds for 45min, the fourth stage heats up to 700℃ at a rate of 4℃ / min and holds for 30min, the fifth stage heats up to 750℃ at a rate of 4℃ and holds for 20min, and the sixth stage heats up to 800℃ at a rate of 4℃ / min and holds for 10min. Allow it to cool naturally to 25℃, and cut it into short pieces with scissors to obtain carbonized fiber. Step S6: Add 8g of carbonized fiber and 100mL of thionyl chloride solution to a three-necked flask equipped with a stirrer and thermometer. React at 80℃ for 4 hours, filter, wash the carbonized fiber three times with N,N-dimethylformamide, add 100mL of melamine solution, react at 80℃ for 4 hours, filter, wash the carbonized fiber three times with N,N-dimethylformamide, add 50mL of trimesoyl chloride solution, react at 80℃ for 2 hours, filter, wash the carbonized fiber three times with N,N-dimethylformamide, add 100mL of p-phenylenediamine solution, react at 80℃ for 2 hours, filter. The carbonized fibers were washed three times with N,N-dimethylformamide and anhydrous ethanol, respectively, and then dried in a vacuum drying oven at 80°C for 5.5 h to obtain modified carbonized fibers. The concentration of the thionyl chloride solution was 0.25 mol / L, and the solvent was N,N-dimethylformamide; the concentration of the melamine solution was 0.15 mol / L, and the solvent was N,N-dimethylformamide; the concentration of the trimesoyl chloride solution was 0.2 mol / L, and the solvent was N,N-dimethylformamide; the concentration of the p-phenylenediamine solution was 0.15 mol / L, and the solvent was N,N-dimethylformamide. Step S7: Weigh out 100 parts by weight of modified nitrile rubber, 75 parts by weight of ethylene butadiene rubber K8370EM, 10 parts by weight of modified carbon fiber, 15 parts by weight of organic montmorillonite, 40 parts by weight of silica, 2 parts by weight of crosslinking agent BIPB-40, 3 parts by weight of crosslinking aid TAIC-70, 1.5 parts by weight of dicumyl peroxide, 10 parts by weight of plasticizer JH-95, 2 parts by weight of antioxidant 4010NA, 7 parts by weight of zinc oxide, 3 parts by weight of bis-(γ-triethoxysilylpropyl)tetrasulfide and 0.5 parts by weight of sulfur; Step S8: Put the modified nitrile rubber and ethylene butadiene rubber into a mixer and plasticize for 2 minutes. Add plasticizer, zinc oxide and antioxidant, and mix at 75°C for 3 minutes. Add 20 parts of silica, organic montmorillonite and modified carbon fiber, and mix at 120°C for 4 minutes. Add 20 parts of silica and silane coupling agent, and mix at 145°C for 3 minutes. Discharge the rubber, place it on a two-roll mill to press into sheets, and let it stand at 25°C for 24 hours to obtain a masterbatch. Step S9: Place a section of masterbatch on a two-roll mill and roll it at 55°C. Add crosslinking aid, crosslinking agent, vulcanizing agent and sulfur. Turn the mixture with left and right cutters, then pass it through a thin mill 3 times and roll it into a triangular shape 7 times. Produce the sheet and let it stand at 25°C for 24 hours. Fill it into a mold and place it in a flat vulcanizing machine. Vulcanize it at 173°C and 18MPa for 5 minutes. Place it in a forced-air drying oven and vulcanize it at 150°C for 4 hours. Let it cool naturally to 25°C to obtain the high and low temperature resistant new energy air suspension top rubber.

[0028] Example 3:

[0029] This embodiment describes a method for preparing a high and low temperature resistant top adhesive for new energy air suspension systems, comprising the following steps: Step S1: Add 100g of NBR-2707 nitrile rubber and 1100mL of chlorobenzene to a three-necked flask equipped with a stirrer and thermometer. Mix and stir for 30min. Transfer to a constant temperature oil bath at 40℃. Add 3mL of formic acid and 8mL of 30% hydrogen peroxide solution. Stir and react for 6h. Cool naturally to 25℃. Flocculate three times in anhydrous ethanol. Wash twice with distilled water. Dry in a 60℃ forced-air drying oven for 8h. Add 1100mL of chlorobenzene. Mix and stir for 30min. Add 2g of palladium. Place in a high-pressure reactor. Purge and purge nitrogen three times and hydrogen three times at a stirring speed of 80r / min. Finally, purge hydrogen to 3MPa. Heat to 80℃ and react for 4h. Cool naturally to 25℃. Use molecular sieve adsorption catalyst to obtain intermediate 1. Step S2: Add 100 mL of intermediate 1, 2 g of 2-aminoimidazole and 0.2 g of potassium hydroxide to a three-necked flask equipped with a stirrer and thermometer. Under a nitrogen atmosphere, heat to 110 °C and react for 8 h. After the reaction is complete, cool naturally to 25 °C, precipitate with anhydrous ethanol, wash 3 times with deionized water, and transfer to a 50 °C forced-air drying oven to dry for 6 h to obtain the precursor. Step S3: Add 100mL of epoxy resin E51 to a three-necked flask equipped with a stirrer and thermometer, place it in a constant temperature oil bath at 75℃ and stir for 30min. Add 20g of precursor and 70mL of polyamide 651, continue stirring for 2h, degas under vacuum, and cure at 160℃ for 3h to obtain the matrix material. Add 100g of fluororubber ETP-600S to a two-roll mill for roll plasticizing, add 10g of zinc oxide, 10g of magnesium oxide, 40g of carbon black, 4g of crosslinking aid SR517 and 3g of hydrogen peroxide tert-butanol, mix for 30min, let stand for 24h and then place it on a flat vulcanizing bed for vulcanization: first stage vulcanization at 170℃×5min, second stage vulcanization at 200℃×4h to obtain the composite material. Step S4: Add 50g of matrix material and 50g of composite material to a two-roll mill for plasticizing and blending to obtain a rubber mixture; add 5g of fullerene C 60 300 mL of tetrahydrofuran was added to a beaker and ultrasonically treated for 3 h. The rubber mixture was added and stirred for 3 h. The mixture was evaporated under reduced pressure at 65 °C for 2 h and vacuum dried at 80 °C for 48 h. 2 g of stearic acid, 5 g of zinc oxide, 3 g of antioxidant Naugard 445, 3 g of crosslinking aid SR517, 35 g of zinc methacrylate, and 3 g of dicumyl peroxide were added. The mixture was wrapped in a triangular shape and rolled three times. After standing for 24 h, it was vulcanized in a flat vulcanizing bed: first stage vulcanization at 170 °C for 8 min and second stage vulcanization at 150 °C for 4 h to obtain modified nitrile rubber. Step S5: Pre-oxidize the polyacrylonitrile fiber Dolanit VF11 at 275℃ in air for 3 hours, place it in a reactor, and purge with nitrogen for protection. Use a 6-stage gradient heating: the first stage heats up to 450℃ at a rate of 10℃ / min, the second stage heats up to 500℃ at a rate of 2℃ / min and holds for 1.5 hours, the third stage heats up to 600℃ at a rate of 2℃ / min and holds for 1 hour, the fourth stage heats up to 700℃ at a rate of 5℃ / min and holds for 40 minutes, the fifth stage heats up to 750℃ at a rate of 5℃ and holds for 30 minutes, and the sixth stage heats up to 800℃ at a rate of 5℃ / min and holds for 15 minutes. Allow it to cool naturally to 25℃, and cut it into short pieces with scissors to obtain carbonized fiber. Step S6: Add 10g of carbonized fiber and 100mL of thionyl chloride solution to a three-necked flask equipped with a stirrer and thermometer. React at 80℃ for 5 hours. Filter, wash the carbonized fiber three times with N,N-dimethylformamide, add 100mL of melamine solution, react at 80℃ for 5 hours, filter, wash the carbonized fiber three times with N,N-dimethylformamide, add 50mL of trimesoyl chloride solution, react at 80℃ for 3 hours, filter, wash the carbonized fiber three times with N,N-dimethylformamide, add 100mL of p-phenylenediamine solution, react at 80℃ for 3 hours, and then filter again. The carbonized fibers were filtered, washed three times each with N,N-dimethylformamide and anhydrous ethanol, and dried in a vacuum drying oven at 80°C for 6 hours to obtain modified carbonized fibers. The concentration of the thionyl chloride solution was 0.25 mol / L, and the solvent was N,N-dimethylformamide; the concentration of the melamine solution was 0.15 mol / L, and the solvent was N,N-dimethylformamide; the concentration of the trimesoyl chloride solution was 0.2 mol / L, and the solvent was N,N-dimethylformamide; the concentration of the p-phenylenediamine solution was 0.15 mol / L, and the solvent was N,N-dimethylformamide. Step S7: Weigh out 100 parts by weight of modified nitrile rubber, 80 parts by weight of ethylene butadiene rubber K8370EM, 15 parts by weight of modified carbon fiber, 20 parts by weight of organic montmorillonite, 50 parts by weight of silica, 3 parts by weight of crosslinking agent BIPB-40, 4 parts by weight of crosslinking aid TAIC-70, 2 parts by weight of dicumyl peroxide, 15 parts by weight of plasticizer JH-95, 3 parts by weight of antioxidant 4010NA, 8 parts by weight of zinc oxide, 4 parts by weight of bis-(γ-triethoxysilylpropyl)tetrasulfide and 0.8 parts by weight of sulfur; Step S8: Put the modified nitrile rubber and ethylene butadiene rubber into a mixer and plasticize for 2 minutes. Add plasticizer, zinc oxide and antioxidant, and mix at 100°C for 3 minutes. Add 25 parts of silica, organic montmorillonite and modified carbon fiber, and mix at 130°C for 5 minutes. Add 25 parts of silica and silane coupling agent, and mix at 150°C for 3 minutes. Discharge the rubber, place it on a two-roll mill to press into sheets, and let it stand at 25°C for 24 hours to obtain a masterbatch. Step S9: Place a section of masterbatch on a two-roll mill and roll it at 60°C. Add crosslinking aid, crosslinking agent, vulcanizing agent and sulfur. Turn the mixture with left and right cutters, then pass it through a thin mill 3 times and roll it into a triangular shape 8 times. Produce a sheet and let it stand at 25°C for 24 hours. Fill it into a mold and place it in a flat vulcanizing machine. Vulcanize it at 175°C and 20MPa for 6 minutes. Place it in a forced-air drying oven and vulcanize it at 150°C for 4 hours. Let it cool naturally to 25°C to obtain a high and low temperature resistant new energy air suspension top rubber.

[0030] Comparative Example 1: This comparative example illustrates a method for preparing a high- and low-temperature resistant top mount for a new energy air suspension system, comprising the following steps: Step S1: Weigh out 100 parts by weight of nitrile rubber NBR-2707, 75 parts of ethylene butadiene rubber K8370EM, 10 parts of carbon fiber T700, 15 parts of organic montmorillonite, 40 parts of silica, 2 parts of crosslinking agent BIPB-40, 3 parts of crosslinking aid TAIC-70, 1.5 parts of dicumyl peroxide, 10 parts of plasticizer JH-95, 2 parts of antioxidant 4010NA, 7 parts of zinc oxide, 3 parts of bis-(γ-triethoxysilylpropyl)tetrasulfide and 0.5 parts of sulfur; Step S2: Put nitrile rubber NBR-2707 and ethylene butadiene rubber into a mixer and plasticize for 2 minutes. Add plasticizer, zinc oxide and antioxidant, and mix at 75°C for 3 minutes. Add 20 parts of silica, organic montmorillonite and carbon fiber T700, and mix at 120°C for 4 minutes. Add 20 parts of silica and silane coupling agent, and mix at 145°C for 3 minutes. Discharge the rubber, place it on a two-roll mill to press into sheets, and let it stand at 25°C for 24 hours to obtain a masterbatch. Step S3: Place a section of masterbatch on a two-roll mill and roll it at 55°C. Add crosslinking aid, crosslinking agent, vulcanizing agent and sulfur. Turn the mixture with left and right cutters, then pass it through a thin mill 3 times and roll it into a triangular shape 7 times. Produce the sheet and let it stand at 25°C for 24 hours. Fill it into a mold and place it in a flat vulcanizing machine. Vulcanize it at 173°C and 18MPa for 5 minutes. Place it in a forced-air drying oven and vulcanize it at 150°C for 4 hours. Let it cool naturally to 25°C to obtain a high and low temperature resistant new energy air suspension top rubber.

[0031] Comparative Example 2: This comparative example illustrates a method for preparing a high- and low-temperature resistant top mount for a new energy air suspension system, comprising the following steps: Step S1: Add 98g of NBR-2707 nitrile rubber and 1050mL of chlorobenzene to a three-necked flask equipped with a stirrer and thermometer. Mix and stir for 30min. Transfer to a constant temperature oil bath at 40℃. Add 2mL of formic acid and 7mL of 30% hydrogen peroxide solution. Stir and react for 6h. Allow to cool naturally to 25℃. Flocculate three times in anhydrous ethanol. Wash twice with distilled water. Dry in a 55℃ forced-air drying oven for 7h. Add 1050mL of chlorobenzene. Mix and stir for 30min. Add 1.8g of palladium. Place in a high-pressure reactor. Purge and purge nitrogen three times and hydrogen three times at a stirring speed of 75r / min. Finally, purge with hydrogen to 3MPa. Heat to 65℃ and react for 4h. Allow to cool naturally to 25℃. Use molecular sieve to adsorb the catalyst to obtain intermediate 1. Step S2: Add 95 mL of intermediate 1, 1.5 g of 2-aminoimidazole and 0.15 g of potassium hydroxide to a three-necked flask equipped with a stirrer and thermometer. Under a nitrogen atmosphere, heat to 95 °C and react for 6 h. After the reaction is complete, cool naturally to 25 °C, precipitate with anhydrous ethanol, wash 3 times with deionized water, and transfer to a 50 °C forced-air drying oven to dry for 5.5 h to obtain the precursor. Step S3: Add 95 mL of epoxy resin E51 to a three-necked flask equipped with a stirrer and thermometer, place it in a constant temperature oil bath at 73°C and stir for 30 min. Add 15 g of precursor and 60 mL of polyamide 651, continue stirring for 1.5 h, degas under vacuum, and cure at 155°C for 2.5 h to obtain the matrix material. Add 100 g of fluororubber ETP-600S to a two-roll mill for roll plasticizing, add 8 g of zinc oxide, 8 g of magnesium oxide, 30 g of carbon black, 3 g of crosslinking aid SR517 and 2.5 g of hydrogen peroxide tert-butanol, mix for 25 min, let stand for 24 h, and then vulcanize on a flat vulcanizing bed: first stage vulcanization at 170°C for 5 min, second stage vulcanization at 200°C for 4 h to obtain the composite material. Step S4: Add 48g of matrix material and 48g of composite material to a two-roll mill for plasticizing and blending to obtain a rubber mixture; add 3g of fullerene C 60 250 mL of tetrahydrofuran was added to a beaker and ultrasonically treated for 3 h. The rubber mixture was added and stirred for 3 h. The mixture was then evaporated under reduced pressure at 63 °C for 1.5 h and vacuum dried at 80 °C for 48 h. 1.5 g of stearic acid, 4 g of zinc oxide, 2 g of antioxidant Naugard 445, 2 g of crosslinking aid SR517, 25 g of zinc methacrylate, and 2 g of dicumyl peroxide were added. The mixture was then wrapped in a triangular shape and rolled three times. After standing for 24 h, it was vulcanized again using a flat vulcanizing bed: first stage vulcanization at 170 °C for 5 min and second stage vulcanization at 150 °C for 4 h to obtain modified nitrile rubber. Step S5: Weigh out 100 parts by weight of modified nitrile rubber, 75 parts by weight of ethylene butadiene rubber K8370EM, 10 parts by weight of carbon fiber T700, 15 parts by weight of organic montmorillonite, 40 parts by weight of silica, 2 parts by weight of crosslinking agent BIPB-40, 3 parts by weight of crosslinking aid TAIC-70, 1.5 parts by weight of dicumyl peroxide, 10 parts by weight of plasticizer JH-95, 2 parts by weight of antioxidant 4010NA, 7 parts by weight of zinc oxide, 3 parts by weight of bis-(γ-triethoxysilylpropyl)tetrasulfide and 0.5 parts by weight of sulfur; Step S6: Add modified nitrile rubber and ethylene butadiene rubber to a mixer and plasticize for 2 minutes. Add plasticizer, zinc oxide and antioxidant, and mix at 75°C for 3 minutes. Add 20 parts of silica, organic montmorillonite and carbon fiber T700, and mix at 120°C for 4 minutes. Add 20 parts of silica and silane coupling agent, and mix at 145°C for 3 minutes. Discharge the rubber, place it on a two-roll mill to compress it into sheets, and let it stand at 25°C for 24 hours to obtain a masterbatch. Step S7: Place a section of masterbatch on a two-roll mill and roll it at 55°C. Add crosslinking aid, crosslinking agent, vulcanizing agent and sulfur. Turn the mixture with left and right cutters, then pass it through a thin mill 3 times and roll it into a triangular shape 7 times. Produce the sheet and let it stand at 25°C for 24 hours. Fill it into a mold and place it in a flat vulcanizing machine. Vulcanize it at 173°C and 18MPa for 5 minutes. Place it in a forced-air drying oven and vulcanize it at 150°C for 4 hours. Let it cool naturally to 25°C to obtain a high and low temperature resistant new energy air suspension top rubber.

[0032] Comparative Example 3: This comparative example illustrates a method for preparing a high- and low-temperature resistant top mount for a new energy air suspension system, comprising the following steps: Step S1: Pre-oxidize the polyacrylonitrile fiber Dolanit VF11 at 240℃ in air for 2.5h, place it in a reactor, and purge with nitrogen for protection. Use a 6-stage gradient heating: the first stage heats up to 450℃ at a rate of 8℃ / min, the second stage heats up to 500℃ at a rate of 1.5℃ / min and holds for 1.5h, the third stage heats up to 600℃ at a rate of 1.5℃ / min and holds for 45min, the fourth stage heats up to 700℃ at a rate of 4℃ / min and holds for 30min, the fifth stage heats up to 750℃ at a rate of 4℃ and holds for 20min, and the sixth stage heats up to 800℃ at a rate of 4℃ / min and holds for 10min. Allow it to cool naturally to 25℃, and cut it into short pieces with scissors to obtain carbonized fiber. Step S2: Add 8g of carbonized fiber and 100mL of thionyl chloride solution to a three-necked flask equipped with a stirrer and thermometer. React at 80℃ for 4 hours, filter, wash the carbonized fiber three times with N,N-dimethylformamide, add 100mL of melamine solution, react at 80℃ for 4 hours, filter, wash the carbonized fiber three times with N,N-dimethylformamide, add 50mL of trimesoyl chloride solution, react at 80℃ for 2 hours, filter, wash the carbonized fiber three times with N,N-dimethylformamide, add 100mL of p-phenylenediamine solution, react at 80℃ for 2 hours, filter. The carbonized fibers were washed three times with N,N-dimethylformamide and anhydrous ethanol, respectively, and then dried in a vacuum drying oven at 80°C for 5.5 h to obtain modified carbonized fibers. The concentration of the thionyl chloride solution was 0.25 mol / L, and the solvent was N,N-dimethylformamide; the concentration of the melamine solution was 0.15 mol / L, and the solvent was N,N-dimethylformamide; the concentration of the trimesoyl chloride solution was 0.2 mol / L, and the solvent was N,N-dimethylformamide; the concentration of the p-phenylenediamine solution was 0.15 mol / L, and the solvent was N,N-dimethylformamide. Step S3: Weigh out 100 parts by weight of nitrile rubber NBR-2707, 75 parts of ethylene butadiene rubber K8370EM, 10 parts of modified carbon fiber, 15 parts of organic montmorillonite, 40 parts of silica, 2 parts of crosslinking agent BIPB-40, 3 parts of crosslinking aid TAIC-70, 1.5 parts of dicumyl peroxide, 10 parts of plasticizer JH-95, 2 parts of antioxidant 4010NA, 7 parts of zinc oxide, 3 parts of bis-(γ-triethoxysilylpropyl)tetrasulfide and 0.5 parts of sulfur; Step S4: Put nitrile rubber NBR-2707 and ethylene butadiene rubber into a mixer and plasticize for 2 minutes. Add plasticizer, zinc oxide and antioxidant, and mix at 75°C for 3 minutes. Add 20 parts of silica, organic montmorillonite and modified carbon fiber, and mix at 120°C for 4 minutes. Add 20 parts of silica and silane coupling agent, and mix at 145°C for 3 minutes. Discharge the rubber, place it on a two-roll mill to press into sheets, and let it stand at 25°C for 24 hours to obtain a masterbatch. Step S5: Place a section of masterbatch on a two-roll mill and roll it at 55°C. Add crosslinking aid, crosslinking agent, vulcanizing agent and sulfur. Turn the mixture with left and right cutters, then pass it through a thin mill 3 times and roll it into a triangular shape 7 times. Produce the sheet and let it stand at 25°C for 24 hours. Fill it into a mold and place it in a flat vulcanizing machine. Vulcanize it at 173°C and 18MPa for 5 minutes. Place it in a forced-air drying oven and vulcanize it at 150°C for 4 hours. Let it cool naturally to 25°C to obtain a high and low temperature resistant new energy air suspension top rubber.

[0033] The high and low temperature resistant new energy air suspension top rubber prepared in Examples 1-3 and Comparative Examples 1-3 were tested for tensile strength according to standard GB / T 528-1998; for tear strength according to standard GB / T 529-1991; and for compression set after being placed in low temperature (-50℃), room temperature (25℃), and high temperature (100℃) environments for 24 hours according to standard GB / T7759-1996. The test results are as follows: Figure 1-3 As shown: Comparing Examples 1-3 with Comparative Examples 1-3, it can be seen that: in Examples 1-3, the amount of raw materials gradually increases, and the vulcanization time is prolonged, resulting in more and denser chemical cross-linking points between rubber molecular chains, providing higher tensile stress, tensile strength, and better heat resistance. More modified carbon fibers and silica provide a larger reinforcing surface area. The increased amount of active imidazole groups leads to stronger interactions between more active sites and the surface functional groups of the modified carbon fibers, improving the stress transfer efficiency at the filler-rubber interface and increasing tear strength. Comparing Example 2 with Comparative Example 1, it can be seen that: Comparative Example 1 uses basic rubber as the matrix material, while the rubber matrix of Example 2 is hydrogenated, resulting in a saturated main chain and higher thermo-oxidative stability than the unsaturated nitrile rubber of Comparative Example 1. In Comparative Example 1, carbon fibers and rubber rely only on physical adsorption and weak coupling. The interaction between the agents and the interface makes it easy to slip. Comparing Example 2 with Comparative Example 2, it can be seen that: Comparative Example 2 uses commercial carbon fiber, whose surface inertness does not allow for a strong bond with the active rubber matrix, and the reinforcing effect of the fiber is not fully demonstrated. The modified fiber in Example 2 provides a larger specific surface area and reaction sites, forming an interpenetrating and interlocking strong interface layer with the active matrix, perfectly combining the heat resistance of the matrix and the rigidity of the fiber, resulting in higher strength. Comparing Example 2 with Comparative Example 3, it can be seen that: The rubber matrix of Comparative Example 3 is ordinary nitrile rubber, whose unsaturated double bonds are prone to oxidation, chain scission, and rearrangement at high temperatures, leading to network softening. The loose matrix network cannot resist permanent deformation at high temperatures. The hydrogenated rubber matrix in Example 2 provides a stable cross-linked network at high temperatures, combined with a strong interface, thereby achieving both high strength and low deformation.

[0034] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0035] The above description is merely an example and illustration of the present invention. Those skilled in the art can make various modifications or additions to the specific embodiments described or use similar methods to replace them, as long as they do not deviate from the invention or exceed the scope defined in this application, they should all fall within the protection scope of the present invention.

Claims

1. A high and low temperature resistant new energy air suspension top adhesive, characterized in that, Includes the following components by weight: 100 parts modified nitrile rubber, 70-80 parts ethylene-butadiene rubber, 5-15 parts modified carbon fiber, 10-20 parts organic montmorillonite, 30-50 parts silica, 1-3 parts crosslinking agent, 2-4 parts crosslinking aid, 1-2 parts vulcanizing agent, 5-15 parts plasticizer, 1-3 parts antioxidant, 5-8 parts zinc oxide, 2-4 parts silane coupling agent, and 0.3-0.8 parts sulfur; The modified nitrile rubber is prepared by the following steps: Step a1: Mix and stir nitrile rubber and the first chlorobenzene, add formic acid and hydrogen peroxide solution, stir to react, flocculate, wash, dry, add the second chlorobenzene and stir, add catalyst, react under hydrogen atmosphere, and use molecular sieve adsorption to obtain intermediate 1; Step a2: Mix intermediate 1, aminoimidazole monomer and catalyst, react, precipitate, wash and dry to obtain precursor; Step a3: Mix and stir the epoxy resin, precursor and curing agent, vacuum degas and cure to obtain the matrix material; roll plasticize the fluororubber, add zinc oxide, magnesium oxide, carbon black, crosslinking aid and crosslinking agent, mix and vulcanize to obtain the composite material; Step a4: Plasticize and blend the matrix material and composite material, add fullerene and tetrahydrofuran, stir, evaporate under reduced pressure, dry, add stearic acid, zinc oxide, antioxidant, crosslinking aid, reinforcing agent and vulcanizing agent, form triangular wraps and roll, vulcanize to obtain modified nitrile rubber.

2. The high and low temperature resistant new energy air suspension top adhesive according to claim 1, characterized in that, The ethylene-butadiene rubber is model K8370EM; the crosslinking agent is model BIPB-40; the crosslinking aid is model TAIC-70; the silica is model R974; the vulcanizing agent is dicumyl peroxide; the plasticizer is model JH-95; the antioxidant is model 4010NA; and the silane coupling agent is bis-(γ-triethoxysilylpropyl)tetrasulfide.

3. The high and low temperature resistant new energy air suspension top adhesive according to claim 1, characterized in that, In step a1, the ratio of nitrile rubber, total chlorobenzene, formic acid, hydrogen peroxide solution, and catalyst is 95-100g: 2000-2200mL: 1-3mL: 6-8mL: 1.5-2g; the first part of chlorobenzene accounts for 1 / 2 of the total chlorobenzene; the second part of chlorobenzene accounts for 1 / 2 of the total chlorobenzene; the nitrile rubber is of type NBR-2707; the hydrogen peroxide solution has a mass fraction of 30%; and the catalyst is palladium.

4. The high and low temperature resistant new energy air suspension top adhesive according to claim 1, characterized in that, In step a2, the ratio of intermediate 1, aminoimidazolium monomer, and catalyst is 90-100 mL: 1-2 g: 0.1-0.2 g; the aminoimidazolium monomer is one of 2-aminoimidazolium, β-aminoethylimidazolium, and 1-(3-aminopropyl)imidazolium; the catalyst is one of Zn(ClO4)2·6H2O, CH3COOH, tetrabutylammonium bromide, and potassium hydroxide.

5. The high and low temperature resistant new energy air suspension top adhesive according to claim 1, characterized in that, In step a3, the ratio of epoxy resin, precursor, curing agent, fluororubber, zinc oxide, magnesium oxide, carbon black, crosslinking aid, and crosslinking agent is 90-100mL:10-20g:50-70mL:100g:5-10g:5-10g:20-40g:2-4g:2-3g; the epoxy resin is E51; the curing agent is polyamide 651; the fluororubber is ETP-600S; the crosslinking aid is one of TAIC-70, SR350, and SR517; and the crosslinking agent is one of α,α'-bis(tert-butylperoxy)diisopropylbenzene, tert-butanol hydrogen peroxide, and di-tert-butyl peroxide.

6. The high and low temperature resistant new energy air suspension top adhesive according to claim 1, characterized in that, The ratio of the matrix material, composite material, fullerene, tetrahydrofuran, stearic acid, zinc oxide, antioxidant, crosslinking aid, reinforcing agent, and vulcanizing agent used in step a4 is 45-50g: 45-50g: 1-5g: 200-300mL: 1-2g: 3-5g: 1-3g: 1-3g: 15-35g: 1.5-3g; the fullerene is of type C. 60 The antioxidant is Naugard 445; the crosslinking aid is one of TAIC-70, SR350, and SR517; the reinforcing agent is zinc methacrylate; and the vulcanizing agent is dicumyl peroxide.

7. The high and low temperature resistant new energy air suspension top adhesive according to claim 1, characterized in that, The modified carbonized fiber is prepared by the following steps: Step b1: Pre-oxidize the polyacrylonitrile fiber, put it into the reaction vessel, purge it with nitrogen for protection, use a 6-stage gradient heating, cool it naturally, and cut it into short pieces with scissors to obtain carbonized fiber; Step b2: Add carbonized fiber and thionyl chloride solution to a three-necked flask, react, filter, wash with N,N-dimethylformamide, add melamine solution, react, filter, wash with N,N-dimethylformamide, add trimesoyl chloride solution, react, filter, wash with N,N-dimethylformamide, add p-phenylenediamine solution, react, filter, wash with N,N-dimethylformamide, add p-phenylenediamine solution, react, filter, wash with N,N-dimethylformamide and anhydrous ethanol respectively, and dry to obtain modified carbonized fiber.

8. The high and low temperature resistant new energy air suspension top adhesive according to claim 7, characterized in that, The polyacrylonitrile fiber mentioned in step b1 is of type Dolanit VF11.

9. The high and low temperature resistant new energy air suspension top adhesive according to claim 7, characterized in that, In step b2, the ratio of carbonized fiber, thionyl chloride solution, melamine solution, trimesoyl chloride solution, and p-phenylenediamine solution is 5-10 g: 100 mL: 100 mL: 50 mL: 100 mL; the concentration of the thionyl chloride solution is 0.25 mol / L, and the solvent is N,N-dimethylformamide; the concentration of the melamine solution is 0.15 mol / L, and the solvent is N,N-dimethylformamide; the concentration of the trimesoyl chloride solution is 0.2 mol / L, and the solvent is N,N-dimethylformamide; the concentration of the p-phenylenediamine solution is 0.15 mol / L, and the solvent is N,N-dimethylformamide.

10. A method for preparing the high and low temperature resistant new energy air suspension top adhesive as described in any one of claims 1-9, characterized in that, Includes the following steps: Step 1: Weigh out the following components by weight: 100 parts modified nitrile rubber, 70-80 parts ethylene-butadiene rubber, 5-15 parts modified carbon fiber, 10-20 parts organic montmorillonite, 30-50 parts silica, 1-3 parts crosslinking agent, 2-4 parts crosslinking aid, 1-2 parts vulcanizing agent, 5-15 parts plasticizer, 1-3 parts antioxidant, 5-8 parts zinc oxide, 2-4 parts silane coupling agent, and 0.3-0.8 parts sulfur. Step 2: Plasticize the modified nitrile rubber and ethylene butadiene rubber, add plasticizer, zinc oxide and antioxidant, mix, add half the weight of silica, organic montmorillonite and modified carbon fiber, mix, add half the remaining weight of silica and silane coupling agent, mix, discharge the rubber, place it on a two-roll mill for sheeting, and let it stand to obtain a section of masterbatch; Step 3: Wrap a section of masterbatch around a roller, add crosslinking aid, crosslinking agent, vulcanizing agent and sulfur, turn it over with left and right cutters, pass through thinly, form a triangular package, extrude the sheet, place it, fill it into a mold, and place it in a flat vulcanizing machine for vulcanization to obtain a new energy air suspension top rubber resistant to high and low temperatures.

Images