Bionic cobweb structure damping rubber and preparation method thereof

Abstract

The invention provides shock-reducing rubber with a bionic cobweb structure and a preparation method thereof, and the shock-reducing rubber with the bionic cobweb structure comprises a radial reinforcing unit which is composed of high-modulus fibers arranged in a wave shape; the annular damping unit is composed of a composite matrix of natural rubber and regenerated rubber, and waste tire rubber powder and graphite powder are dispersed in the annular damping unit; the friction energy consumption node is formed by uniformly distributing ceramic microbeads in a rubber matrix; the radial reinforcing units, the annular damping units and the friction energy dissipation nodes are integrally formed through mold pressing vulcanization, and a three-dimensional interconnected bionic cobweb structure is formed. A high-modulus fiber reinforced structure arranged in a wave shape is adopted, PET / aramid fibers are pressed into a periodic wave structure with the amplitude being 2-3 mm and the wavelength being 10-15 mm under the tension of 5-10 N through a wave-shaped mold, the surfaces of the fibers are treated through RFL steeping liquor to form a chemical-mechanical dual-combination interface, the radial rigidity is reduced, and meanwhile 85% of axial bearing capacity is kept.

Description

Technical Field The present invention relates to the field of functional rubber, and in particular to a bionic spider web structure shock-absorbing rubber and a preparation method thereof. Background Art In the manufacturing of industrial rubber rollers, existing vibration-damping rubber materials face severe technical challenges. As core components of critical equipment in printing, textiles, and steel rolling, rubber rollers must not only possess excellent vibration damping performance but also meet dynamic stability requirements under high-speed operation. However, conventional rubber rollers suffer from several significant drawbacks. First, the linearly arranged reinforcing fibers are prone to resonance at high speeds (over 1000 rpm), resulting in radial runout exceeding 15μm, seriously affecting printing accuracy and rolling uniformity. Second, conventional filler systems can heat up to over 45°C after eight hours of continuous operation, accelerating rubber aging and causing "thermal cracking." Third, existing rubber rollers suffer from severe surface wear, with Taber testing showing 1mm of wear after just 500 revolutions, significantly shortening their service life. More importantly, current rubber roller manufacturing processes struggle to precisely control the distribution of the reinforcing fibers. Manual placement results in fiber spacing deviations as high as ±25%, severely impacting product consistency. While some high-end equipment utilizes metal reinforcement, this increases costs by 3-5 times and reduces vibration damping effectiveness by 40%. As industrial equipment evolves toward higher speeds and greater precision, developing new rubber roller materials with superior shock absorption, heat and wear resistance, and excellent dynamic balance has become a key breakthrough in improving equipment manufacturing. This requires maintaining rubber elasticity while addressing a series of technical challenges, including fiber reinforcement, thermal management, and surface durability, to meet the stringent performance requirements of modern industry. Summary of the Invention

[0001] Technical problem to be solved: The present invention addresses the technical problem of poor shock absorption effect of current rubber. By adopting a wavy high-modulus fiber reinforcement structure, the PET / aramid fiber is pressed into a periodic wavy structure with an amplitude of 2-3mm and a wavelength of 10-15mm under a tension of 5-10N using a corrugated mold. The fiber surface is treated with RFL impregnation liquid to form a chemical-mechanical dual bonding interface, which reduces the radial stiffness (compared to straight fibers) while maintaining 85% of the axial load-bearing capacity; the fiber displacement rate is reduced and the fatigue life is improved.

[0002] Technical solution: A shock-absorbing rubber material with a bionic spider web structure, comprising: The radial reinforcement unit is composed of wavy high-modulus fibers, the surface of which is pre-treated with RFL impregnation liquid. The circumferential damping unit is composed of a composite matrix of natural rubber and recycled rubber, in which waste tire rubber powder and graphite powder are dispersed. The friction energy dissipation node is formed by ceramic microbeads evenly distributed in the rubber matrix, and the surface of the node and the rubber matrix together form a micro-convex structure. The radial reinforcement unit, the annular damping unit and the friction energy dissipation node are integrally formed by compression molding and vulcanization to form a three-dimensional interconnected bionic spider web structure. Furthermore, the wavy high modulus fibers in the radial reinforcement unit have an amplitude of 2-3 mm, a wavelength of 10-15 mm, and a fiber diameter of 0.1-0.3 mm. Furthermore, the high modulus fiber of the radial reinforcement unit is polyester fiber or aramid fiber. The preparation method of the bionic spider web structure shock-absorbing rubber comprises the following steps, calculated in parts by weight: (1) 10-15 parts of high modulus fiber are immersed in 5-8 parts of RFL impregnation liquid, taken out and dried, pressed into a wavy shape by a corrugated mold under tension control (5-10N), and quickly cooled and shaped (water cooled to below 50°C) to obtain a wavy high modulus fiber; (2) mixing 20 parts of waste tire rubber powder with 0.2 parts of silane coupling agent, heating and stirring to activate the mixture, and obtaining activated waste rubber powder; (3) 60-80 parts of natural rubber, 20-30 parts of recycled rubber and 5 parts of compounding agent are mixed in an internal mixer for one stage, then activated waste rubber powder and 3-8 parts of graphite powder are added for two stage mixing, and finally 5 parts of ceramic microbeads are added; (4) adding the vulcanizing system into the open mill, mixing thinly and uniformly, and obtaining a rubber compound; (5) Laying the wavy high modulus fibers in a mold, fixing them with electrostatic flocking, filling them with rubber mix, and molding and vulcanizing them to shape them; (6) After vulcanization, water cooling and surface grinding are performed to a roughness of Ra = 5-10 μm. Furthermore, in step (1), the solid content of the RFL impregnation solution is 20%, the impregnation time is 10-15 seconds, and the drying condition is 120° C.×3 minutes. Furthermore, in step (2), the activation treatment temperature is 80° C. and the time is 30 minutes. Furthermore, in step (3), the first stage mixing temperature is 160° C. and the time is 5 minutes; the second stage mixing temperature is 80° C., the rotor speed is 45-50 rpm, and the time is 8 minutes. Furthermore, the compounding agents in step (3) include 3 parts by weight of zinc oxide, 1 part by weight of stearic acid and 1 part by weight of antioxidant 4020. Furthermore, the particle size of the ceramic microbeads in step (3) is 20-50 μm. Furthermore, in step (4), the vulcanization system includes 1.5 parts by weight of sulfur and 0.8 parts by weight of accelerator CZ, and the number of thin passes is 5 times. Furthermore, in step (5), the mold inner wall roughness Ra=8 μm; the mold preheating temperature is 80-100° C., and the preheating time is 15-20 min. Furthermore, the electrostatic flocking conditions in step (5) are voltage 30 kV and time 10 s. Furthermore, the vulcanization setting conditions in step (5) are: first stage: 5 MPa low pressure, 120°C×10 min; second stage: 15 MPa high pressure, 150°C×20 min. Furthermore, the water cooling condition in step (6) is 50° C.×5 min, and the surface grinding is performed using a 400-mesh sand belt. Beneficial effects: 1. This invention utilizes a wavy high-modulus fiber-reinforced structure. Using a corrugated mold, PET / aramid fibers are pressed under a tension of 5-10N into a periodic wavy structure with an amplitude of 2-3mm and a wavelength of 10-15mm. The fiber surface is treated with an RFL impregnation solution to form a chemical-mechanical dual bonding interface, reducing radial stiffness (compared to straight fibers) while maintaining 85% of the axial load-bearing capacity. This reduces fiber displacement and improves fatigue life. 2. The present invention constructs a three-dimensional interconnected network that mimics a spider web. The wavy radial fibers and the annular damping layer are integrally formed through segmented vulcanization to form a spiderweb-like stress transfer path. This improves the energy absorption efficiency under dynamic loads, reduces the compression set rate and anisotropy index, and enables the material to cushion impacts through the elastic deformation and internal friction of the rubber when subjected to compression or tension. 3. The radial reinforcement units in this invention are equivalent to the radial traction threads in a spider web. Their primary function is to provide the material's skeletal support and high-strength load-bearing capacity. High-modulus fibers possess excellent tensile strength and elastic modulus, effectively withstanding external loads and distributing them. The fibers are arranged in a wavy pattern, allowing them to first elastically deform under stress, absorbing some energy before gradually tightening to carry the load. This avoids stress concentration and improves the material's toughness. Furthermore, the presence of radial fibers significantly increases the material's stiffness and tear resistance in all directions, preventing brittle fracture under impact. 4. The annular damping unit in the present invention is equivalent to the spiral viscous thread on a spider web. Its main function is to provide the material with elasticity and damping properties. The rubber matrix has good viscoelasticity and will undergo viscous deformation when subjected to vibration or impact, converting part of the mechanical energy into heat energy and dissipating it, thereby playing a shock-absorbing role. The addition of recycled rubber and waste tire rubber powder increases the internal friction and damping loss factor of the matrix, enabling the material to absorb more vibration energy. The dispersion of graphite powder further improves the damping performance and thermal conductivity of the matrix, helping to quickly dissipate energy and prevent local overheating. 5. The friction energy dissipation nodes in the present invention are equivalent to the node connection points on a spider web. Their main function is to introduce a microscopic friction energy dissipation mechanism into the material. The ceramic microbeads have a high hardness and a rough surface, and form a micro-protrusion structure after combining with the rubber matrix. When the material is subjected to cyclic loads or impacts, relative slip and friction will occur between the microbeads and the rubber matrix, as well as between the microbeads, converting part of the mechanical energy into frictional heat and dissipating it. This microscopic friction energy dissipation mechanism can significantly improve the damping performance and energy absorption capacity of the material, especially in the case of high-frequency vibration or multiple impacts, and can effectively prevent fatigue damage caused by repeated deformation of the material. At the same time, the ceramic microbeads also play a certain reinforcing role, improving the compression modulus and wear resistance of the material. 6. The present invention adopts a ceramic microbead / graphite powder composite filler system. The 20-50μm ceramic microbeads serve as hard friction nodes and form a "hard island-soft sea" structure with the graphite powder in the rubber matrix, thereby reducing wear and dynamic heat generation and stabilizing the surface friction coefficient. 7. The present invention uses electrostatic flocking to assist in fiber positioning. A 30kV electrostatic field is applied in the mold for 10s to orient the wavy fibers along the electric field lines, thereby improving the uniformity of fiber distribution. 8. The present invention uses KH-550 silane coupling agent for interface modification, forming -Si-OC- covalent bonds between KH-550 and the waste rubber powder / fiber surface at 80°C, thereby improving the filler-matrix interface shear strength and performance retention rate after wet-heat aging. 9. The present invention uses a gradient vulcanization and precision grinding process, adopts segmented vulcanization, and cooperates with 400-mesh abrasive belt grinding to improve vulcanization uniformity. At the same time, surface grinding plays a key role as the final process, optimizing surface roughness (Ra = 5-10μm). Micro-protrusion structure reconstruction: grinding can expose ceramic micro-bead nodes to form a uniformly distributed friction pair; eliminate radial runout deviation generated during the vulcanization process; improve stress concentration at the fiber-rubber interface; micro-scratches produced by grinding reorient the rubber molecular chains, increase surface density, and eliminate surface microcracks. DETAILED DESCRIPTION Example 1 A method for preparing a bionic spider web structure shock-absorbing rubber comprises the following steps: (1) 10 kg of PET fiber was immersed in 5 kg of RFL impregnation liquid with a solid content of 20% for 15 seconds, dried at 120°C for 3 minutes, pressed into a wavy shape by a corrugated die under tension control (5N), and quickly cooled to below 50°C to set the shape, thereby obtaining a wavy PET fiber with an amplitude of 2-3 mm, a wavelength of 10-15 mm, and a fiber diameter of 0.1-0.3 mm; (2) 20 kg of waste tire rubber powder with a particle size of 40-80 mesh was mixed with 0.2 kg of silane coupling agent KH-550, heated to 80 ° C, and stirred for activation for 30 minutes to obtain activated waste rubber powder; (3) 60 kg of natural rubber SCR10, 20 kg of butyl regenerated rubber 1675N, 3 kg of zinc oxide, 1 kg of stearic acid and 1 kg of antioxidant 4020 were mixed in an internal mixer at a mixing temperature of 160 ° C for 5 min; then activated waste rubber powder and 3 kg of graphite powder were added for a second mixing stage at a mixing temperature of 80 ° C, a rotor speed of 50 rpm and a mixing time of 8 min, and finally 5 kg of ceramic microbeads with a particle size of 20-50 μm were added; (4) Add 1.5 kg of sulfur and 0.8 kg of accelerator CZ into an open mill, pass through 5 times and mix well to obtain a rubber mix; (5) PET fibers with an amplitude of 2-3 mm, a wavelength of 10-15 mm, and a fiber diameter of 0.1-0.3 mm in a wave-shaped arrangement were laid in a mold with an inner wall roughness of Ra = 8 μm. The mold was preheated to 90°C for 20 min and fixed by electrostatic flocking. A 30 kV high-voltage electrostatic field was applied to the inner surface of the mold for 10 s. The rubber compound was then filled in and molded and vulcanized. The first stage was: 5 MPa low pressure, 120°C × 10 min; the second stage was: 15 MPa high pressure, 150°C × 20 min; the volume ratio of PET fiber to rubber compound was 1:4; (6) After vulcanization, the product was water-cooled at 50°C for 5 minutes and the surface was ground with a 400-mesh sand belt to a roughness of Ra = 8.3 μm. Example 2 A method for preparing a bionic spider web structure shock-absorbing rubber comprises the following steps: (1) 11 kg of PET fibers were immersed in 6 kg of RFL impregnation liquid with a solid content of 20% for 15 seconds, dried at 120°C for 3 minutes, pressed into a wavy shape by a corrugated die under tension control (6N), and quickly cooled to below 50°C to set the shape, thereby obtaining PET fibers with a wavy arrangement having an amplitude of 2-3 mm, a wavelength of 10-15 mm, and a fiber diameter of 0.1-0.3 mm; (2) 20 kg of waste tire rubber powder with a particle size of 40-80 mesh was mixed with 0.2 kg of silane coupling agent KH-550, heated to 80 ° C, and stirred for activation for 30 minutes to obtain activated waste rubber powder; (3) 65 kg of natural rubber SCR10, 25 kg of butyl regenerated rubber 1675N, 3 kg of zinc oxide, 1 kg of stearic acid and 1 kg of antioxidant 4020 were mixed in an internal mixer at a mixing temperature of 160 ° C for 5 min; then activated waste rubber powder and 4 kg of graphite powder were added for a second mixing stage at a mixing temperature of 80 ° C, a rotor speed of 50 rpm and a mixing time of 8 min, and finally 5 kg of ceramic microbeads with a particle size of 20-50 μm were added; (4) Add 1.5 kg of sulfur and 0.8 kg of accelerator CZ into an open mill, pass through 5 times and mix well to obtain a rubber mix; (5) PET fibers with an amplitude of 2-3 mm, a wavelength of 10-15 mm, and a fiber diameter of 0.1-0.3 mm in a wave-shaped arrangement were laid in a mold with an inner wall roughness of Ra = 8 μm. The mold was preheated to 90°C for 20 min and fixed by electrostatic flocking. A 30 kV high-voltage electrostatic field was applied to the inner surface of the mold for 10 s. The rubber compound was then filled in and molded and vulcanized. The first stage was: 5 MPa low pressure, 120°C × 10 min; the second stage was: 15 MPa high pressure, 150°C × 20 min; the volume ratio of PET fiber to rubber compound was 1:4; (6) After vulcanization, the product was water-cooled at 50°C for 5 minutes and the surface was ground with a 400-mesh sand belt to a roughness of Ra = 8.6 μm. Example 3 A method for preparing a bionic spider web structure shock-absorbing rubber comprises the following steps: (1) 12 kg of PET fibers were immersed in 7 kg of RFL impregnation liquid with a solid content of 20% for 15 seconds, dried at 120°C for 3 minutes, pressed into a wavy shape by a corrugated die under tension control (7N), and quickly cooled to below 50°C to set the shape, thereby obtaining PET fibers with a wavy arrangement having an amplitude of 2-3 mm, a wavelength of 10-15 mm, and a fiber diameter of 0.1-0.3 mm; (2) 20 kg of waste tire rubber powder with a particle size of 40-80 mesh was mixed with 0.2 kg of silane coupling agent KH-550, heated to 80 ° C, and stirred for activation for 30 minutes to obtain activated waste rubber powder; (3) 70 kg of natural rubber SCR10, 30 kg of butyl regenerated rubber 1675N, 3 kg of zinc oxide, 1 kg of stearic acid and 1 kg of antioxidant 4020 were mixed in an internal mixer at a mixing temperature of 160 ° C for 5 min; then activated waste rubber powder and 5 kg of graphite powder were added for a second mixing stage at a mixing temperature of 80 ° C, a rotor speed of 50 rpm and a mixing time of 8 min, and finally 5 kg of ceramic microbeads with a particle size of 20-50 μm were added; (4) Add 1.5 kg of sulfur and 0.8 kg of accelerator CZ into an open mill, pass through 5 times and mix well to obtain a rubber mix; (5) PET fibers with a wave-shaped arrangement and an amplitude of 2-3 mm, a wavelength of 10-15 mm, and a fiber diameter of 0.1-0.3 mm were laid in a mold with an inner wall roughness of Ra = 8 μm. The mold was preheated to 90°C for 20 min and fixed by electrostatic flocking. A 30 kV high-voltage electrostatic field was applied to the inner surface of the mold for 10 s. The rubber compound was then filled in and molded and vulcanized. The first stage was: 5 MPa low pressure, 120°C × 10 min; the second stage was: 15 MPa high pressure, 150°C × 20 min; the volume ratio of PET fiber to rubber compound was 1:4; (6) After vulcanization, the product was water-cooled at 50°C for 5 minutes and the surface was ground with a 400-mesh sand belt to a roughness of Ra = 8.4 μm. Example 4 A method for preparing a bionic spider web structure shock-absorbing rubber comprises the following steps: (1) 13 kg of PET fibers were immersed in 8 kg of RFL impregnation liquid with a solid content of 20% for 15 seconds, dried at 120°C for 3 minutes, pressed into a wavy shape by a corrugated die under tension control (8N), and quickly cooled to below 50°C to set the shape, thereby obtaining PET fibers with a wavy arrangement having an amplitude of 2-3 mm, a wavelength of 10-15 mm, and a fiber diameter of 0.1-0.3 mm; (2) 20 kg of waste tire rubber powder with a particle size of 40-80 mesh was mixed with 0.2 kg of silane coupling agent KH-550, heated to 80 ° C, and stirred for activation for 30 minutes to obtain activated waste rubber powder; (3) 75 kg of natural rubber SCR10, 25 kg of butyl regenerated rubber 1675N, 3 kg of zinc oxide, 1 kg of stearic acid and 1 kg of antioxidant 4020 were mixed in an internal mixer at a mixing temperature of 160 ° C for 5 min; then activated waste rubber powder and 6 kg of graphite powder were added for a second mixing stage at a mixing temperature of 80 ° C, a rotor speed of 50 rpm and a mixing time of 8 min, and finally 5 kg of ceramic microbeads with a particle size of 20-50 μm were added; (4) Add 1.5 kg of sulfur and 0.8 kg of accelerator CZ into an open mill, pass through 5 times and mix well to obtain a rubber mix; (5) PET fibers with a wave-shaped arrangement and an amplitude of 2-3 mm, a wavelength of 10-15 mm, and a fiber diameter of 0.1-0.3 mm were laid in a mold with an inner wall roughness of Ra = 8 μm. The mold was preheated to 90°C for 20 min and fixed by electrostatic flocking. A 30 kV high-voltage electrostatic field was applied to the inner surface of the mold for 10 s. The rubber compound was then filled in and molded and vulcanized. The first stage was: 5 MPa low pressure, 120°C × 10 min; the second stage was: 15 MPa high pressure, 150°C × 20 min; the volume ratio of PET fiber to rubber compound was 1:4; (6) After vulcanization, the product was water-cooled at 50°C for 5 minutes and the surface was ground with a 400-mesh sand belt to a roughness of Ra = 8.6 μm. Example 5 A method for preparing a bionic spider web structure shock-absorbing rubber comprises the following steps: (1) 14 g of PET fiber was immersed in 7 kg of RFL impregnation liquid with a solid content of 20% for 15 seconds, dried at 120°C for 3 minutes, pressed into a wavy shape by a corrugated die under tension control (9N), and quickly cooled to below 50°C to set the shape, obtaining a wavy PET fiber with an amplitude of 2-3 mm, a wavelength of 10-15 mm, and a fiber diameter of 0.1-0.3 mm; (2) 20 kg of waste tire rubber powder with a particle size of 40-80 mesh was mixed with 0.2 kg of silane coupling agent KH-550, heated to 80 ° C, and stirred for activation for 30 minutes to obtain activated waste rubber powder; (3) 80 kg of natural rubber SCR10, 25 kg of butyl regenerated rubber 1675N, 3 kg of zinc oxide, 1 kg of stearic acid and 1 kg of antioxidant 4020 were mixed in an internal mixer at a mixing temperature of 160 ° C for 5 min; then activated waste rubber powder and 7 kg of graphite powder were added for a second mixing stage at a mixing temperature of 80 ° C, a rotor speed of 50 rpm and a mixing time of 8 min, and finally 5 kg of ceramic microbeads with a particle size of 20-50 μm were added; (4) Add 1.5 kg of sulfur and 0.8 kg of accelerator CZ into an open mill, pass through 5 times and mix well to obtain a rubber mix; (5) PET fibers with a wave-shaped arrangement and an amplitude of 2-3 mm, a wavelength of 10-15 mm, and a fiber diameter of 0.1-0.3 mm were laid in a mold with an inner wall roughness of Ra = 8 μm. The mold was preheated to 90°C for 20 min and fixed by electrostatic flocking. A 30 kV high-voltage electrostatic field was applied to the inner surface of the mold for 10 s. The rubber compound was then filled in and molded and vulcanized. The first stage was: 5 MPa low pressure, 120°C × 10 min; the second stage was: 15 MPa high pressure, 150°C × 20 min; the volume ratio of PET fiber to rubber compound was 1:4; (6) After vulcanization, the product was water-cooled at 50°C for 5 minutes and the surface was ground with a 400-mesh sand belt to a roughness of Ra = 8.4 μm. Example 6 A method for preparing a bionic spider web structure shock-absorbing rubber comprises the following steps: (1) 15 kg of PET fiber was immersed in 7 kg of RFL impregnation liquid with a solid content of 20% for 15 seconds, dried at 120°C for 3 minutes, pressed into a wavy shape by a corrugated die under tension control (10 N), and quickly cooled to below 50°C to set the shape, thereby obtaining a wavy PET fiber with an amplitude of 2-3 mm, a wavelength of 10-15 mm, and a fiber diameter of 0.1-0.3 mm; (2) 20 kg of waste tire rubber powder with a particle size of 40-80 mesh was mixed with 0.2 kg of silane coupling agent KH-550, heated to 80 ° C, and stirred for activation for 30 minutes to obtain activated waste rubber powder; (3) 75 kg of natural rubber SCR10, 25 kg of butyl regenerated rubber 1675N, 3 kg of zinc oxide, 1 kg of stearic acid and 1 kg of antioxidant 4020 were mixed in an internal mixer at a mixing temperature of 160 ° C for 5 min; then activated waste rubber powder and 8 kg of graphite powder were added for a second mixing stage at a mixing temperature of 80 ° C, a rotor speed of 50 rpm and a mixing time of 8 min, and finally 5 kg of ceramic microbeads with a particle size of 20-50 μm were added; (4) Add 1.5 kg of sulfur and 0.8 kg of accelerator CZ into an open mill, pass through 5 times and mix well to obtain a rubber mix; (5) PET fibers with an amplitude of 2-3 mm, a wavelength of 10-15 mm, and a fiber diameter of 0.1-0.3 mm in a wave-shaped arrangement were laid in a mold with an inner wall roughness of Ra = 8 μm. The mold was preheated to 90°C for 20 min and fixed by electrostatic flocking. A 30 kV high-voltage electrostatic field was applied to the inner surface of the mold for 10 s. The rubber compound was then filled in and molded and vulcanized. The first stage was: 5 MPa low pressure, 120°C × 10 min; the second stage was: 15 MPa high pressure, 150°C × 20 min; the volume ratio of PET fiber to rubber compound was 1:4; (6) After vulcanization, the product was water-cooled at 50°C for 5 minutes and the surface was ground with a 400-mesh sand belt to a roughness of Ra = 8.7 μm. Example 7 A method for preparing a bionic spider web structure shock-absorbing rubber comprises the following steps: (1) 14 kg of PET fiber was immersed in 7 kg of RFL impregnation liquid with a solid content of 20% for 15 seconds, dried at 120°C for 3 minutes, pressed into a wavy shape by a corrugated die under tension control (8N), and quickly cooled to below 50°C to set the shape, thereby obtaining a wavy PET fiber with an amplitude of 2-3 mm, a wavelength of 10-15 mm, and a fiber diameter of 0.1-0.3 mm; (2) 20 kg of waste tire rubber powder with a particle size of 40-80 mesh was mixed with 0.2 kg of silane coupling agent KH-550, heated to 80 ° C, and stirred for activation for 30 minutes to obtain activated waste rubber powder; (3) 70 kg of natural rubber SCR10, 25 kg of butyl regenerated rubber 1675N, 3 kg of zinc oxide, 1 kg of stearic acid and 1 kg of antioxidant 4020 were mixed in an internal mixer at a mixing temperature of 160 ° C for 5 min; then activated waste rubber powder and 7 kg of graphite powder were added for a second mixing stage at a mixing temperature of 80 ° C, a rotor speed of 50 rpm and a mixing time of 8 min, and finally 5 kg of ceramic microbeads with a particle size of 20-50 μm were added; (4) Add 1.5 kg of sulfur and 0.8 kg of accelerator CZ into an open mill, pass through 5 times and mix well to obtain a rubber mix; (5) PET fibers with an amplitude of 2-3 mm, a wavelength of 10-15 mm, and a fiber diameter of 0.1-0.3 mm in a wave-shaped arrangement were laid in a mold with an inner wall roughness of Ra = 8 μm. The mold was preheated to 90°C for 20 min and fixed by electrostatic flocking. A 30 kV high-voltage electrostatic field was applied to the inner surface of the mold for 10 s. The rubber compound was then filled in and molded and vulcanized. The first stage was: 5 MPa low pressure, 120°C × 10 min; the second stage was: 15 MPa high pressure, 150°C × 20 min; the volume ratio of PET fiber to rubber compound was 1:4; (6) After vulcanization, the product was water-cooled at 50°C for 5 minutes and the surface was ground with a 400-mesh sand belt to a roughness of Ra = 8.5 μm. Example 8 A method for preparing a bionic spider web structure shock-absorbing rubber comprises the following steps: (1) 14 kg of PET fiber was immersed in 7 kg of RFL impregnation liquid with a solid content of 20% for 15 seconds, dried at 120°C for 3 minutes, pressed into a wavy shape by a corrugated die under tension control (8N), and quickly cooled to below 50°C to set the shape, thereby obtaining a wavy PET fiber with an amplitude of 2-3 mm, a wavelength of 10-15 mm, and a fiber diameter of 0.1-0.3 mm; (2) 20 kg of waste tire rubber powder with a particle size of 40-80 mesh was mixed with 0.2 kg of silane coupling agent KH-550, heated to 80 ° C, and stirred for activation for 30 minutes to obtain activated waste rubber powder; (3) 75 kg of natural rubber SCR10, 25 kg of butyl regenerated rubber 1675N, 3 kg of zinc oxide, 1 kg of stearic acid and 1 kg of antioxidant 4020 were mixed in an internal mixer at a mixing temperature of 160 ° C for 5 min; then activated waste rubber powder and 7 kg of graphite powder were added for a second mixing stage at a mixing temperature of 80 ° C, a rotor speed of 45 rpm and a mixing time of 8 min, and finally 5 kg of ceramic microbeads with a particle size of 20-50 μm were added; (4) Add 1.5 kg of sulfur and 0.8 kg of accelerator CZ into an open mill, pass through 5 times and mix well to obtain a rubber mix; (5) PET fibers with an amplitude of 2-3 mm, a wavelength of 10-15 mm, and a fiber diameter of 0.1-0.3 mm in a wave-shaped arrangement were laid in a mold with an inner wall roughness of Ra = 8 μm. The mold was preheated to 90°C for 20 min and fixed by electrostatic flocking. A 30 kV high-voltage electrostatic field was applied to the inner surface of the mold for 10 s. The rubber compound was then filled in and molded and vulcanized. The first stage was: 5 MPa low pressure, 120°C × 10 min; the second stage was: 15 MPa high pressure, 150°C × 20 min; the volume ratio of PET fiber to rubber compound was 1:4; (6) After vulcanization, the product was water-cooled at 50°C for 5 minutes and the surface was ground with a 400-mesh sand belt to a roughness of Ra = 8.3 μm. Example 9 A method for preparing a bionic spider web structure shock-absorbing rubber comprises the following steps: (1) 14 kg of PET fiber was immersed in 7 kg of RFL impregnation liquid with a solid content of 20% for 15 seconds, dried at 120°C for 3 minutes, pressed into a wavy shape by a corrugated die under tension control (8N), and quickly cooled to below 50°C to set the shape, thereby obtaining a wavy PET fiber with an amplitude of 2-3 mm, a wavelength of 10-15 mm, and a fiber diameter of 0.1-0.3 mm; (2) 20 kg of waste tire rubber powder with a particle size of 40-80 mesh was mixed with 0.2 kg of silane coupling agent KH-550, heated to 80 ° C, and stirred for activation for 30 minutes to obtain activated waste rubber powder; (3) 70 kg of natural rubber SCR10, 25 kg of butyl regenerated rubber 1675N, 3 kg of zinc oxide, 1 kg of stearic acid and 1 kg of antioxidant 4020 were mixed in an internal mixer at a mixing temperature of 160 ° C for 5 min; then activated waste rubber powder and 7 kg of graphite powder were added for a second mixing stage at a mixing temperature of 80 ° C, a rotor speed of 45 rpm and a mixing time of 8 min, and finally 5 kg of ceramic microbeads with a particle size of 20-50 μm were added; (4) Add 1.5 kg of sulfur and 0.8 kg of accelerator CZ into an open mill, pass through 5 times and mix well to obtain a rubber mix; (5) PET fibers with an amplitude of 2-3 mm, a wavelength of 10-15 mm, and a fiber diameter of 0.1-0.3 mm in a wave-shaped arrangement were laid in a mold with an inner wall roughness of Ra = 8 μm. The mold was preheated to 90°C for 20 min and fixed by electrostatic flocking. A 30 kV high-voltage electrostatic field was applied to the inner surface of the mold for 10 s. The rubber compound was then filled in and molded and vulcanized. The first stage was: 5 MPa low pressure, 120°C × 10 min; the second stage was: 15 MPa high pressure, 150°C × 20 min; the volume ratio of PET fiber to rubber compound was 1:3. (6) After vulcanization, the product was water-cooled at 50°C for 5 minutes and the surface was ground with a 400-mesh sand belt to a roughness of Ra = 8.6 μm. Example 10 A method for preparing a bionic spider web structure shock-absorbing rubber comprises the following steps: (1) 14 kg of PET fiber was immersed in 7 kg of RFL impregnation liquid with a solid content of 20% for 15 seconds, dried at 120°C for 3 minutes, pressed into a wavy shape by a corrugated die under tension control (8N), and quickly cooled to below 50°C to set the shape, thereby obtaining a wavy PET fiber with an amplitude of 2-3 mm, a wavelength of 10-15 mm, and a fiber diameter of 0.1-0.3 mm; (2) 20 kg of waste tire rubber powder with a particle size of 40-80 mesh was mixed with 0.2 kg of silane coupling agent KH-550, heated to 80 ° C, and stirred for activation for 30 minutes to obtain activated waste rubber powder; (3) 75 kg of natural rubber SCR10, 25 kg of butyl regenerated rubber 1675N, 3 kg of zinc oxide, 1 kg of stearic acid and 1 kg of antioxidant 4020 were mixed in an internal mixer at a mixing temperature of 160 ° C for 5 min; then activated waste rubber powder and 7 kg of graphite powder were added for a second mixing stage at a mixing temperature of 80 ° C, a rotor speed of 50 rpm and a mixing time of 8 min, and finally 5 kg of ceramic microbeads with a particle size of 20-50 μm were added; (4) Add 1.5 kg of sulfur and 0.8 kg of accelerator CZ into an open mill, pass through 5 times and mix well to obtain a rubber mix; (5) PET fibers with an amplitude of 2-3 mm, a wavelength of 10-15 mm, and a fiber diameter of 0.1-0.3 mm in a wave-shaped arrangement were laid in a mold with an inner wall roughness of Ra = 8 μm. The mold was preheated to 90°C for 20 min and fixed by electrostatic flocking. A 30 kV high-voltage electrostatic field was applied to the inner surface of the mold for 10 s. The rubber compound was then filled in and molded and vulcanized. The first stage was: 5 MPa low pressure, 120°C × 10 min; the second stage was: 15 MPa high pressure, 150°C × 20 min; the volume ratio of PET fiber to rubber compound was 1:5. (6) After vulcanization, the product was water-cooled at 50°C for 5 minutes and the surface was ground with a 400-mesh sand belt to a roughness of Ra = 8.2 μm. Example 11 A method for preparing a bionic spider web structure shock-absorbing rubber comprises the following steps: (1) 14 kg of PET fiber was immersed in 7 kg of RFL impregnation liquid with a solid content of 20% for 15 seconds, dried at 120°C for 3 minutes, pressed into a wavy shape by a corrugated die under tension control (8N), and quickly cooled to below 50°C to set the shape, thereby obtaining a wavy PET fiber with an amplitude of 2-3 mm, a wavelength of 10-15 mm, and a fiber diameter of 0.1-0.3 mm; (2) 20 kg of waste tire rubber powder with a particle size of 40-80 mesh was mixed with 0.2 kg of silane coupling agent KH-550, heated to 80 ° C, and stirred for activation for 30 minutes to obtain activated waste rubber powder; (3) 70 kg of natural rubber SCR10, 25 kg of butyl regenerated rubber 1675N, 3 kg of zinc oxide, 1 kg of stearic acid and 1 kg of antioxidant 4020 were mixed in an internal mixer at a mixing temperature of 160 ° C for 5 min; then activated waste rubber powder and 7 kg of graphite powder were added for a second mixing stage at a mixing temperature of 80 ° C, a rotor speed of 50 rpm and a mixing time of 8 min, and finally 5 kg of ceramic microbeads with a particle size of 20-50 μm were added; (4) Add 1.5 kg of sulfur and 0.8 kg of accelerator CZ into an open mill, pass through 5 times and mix well to obtain a rubber mix; (5) PET fibers with an amplitude of 2-3 mm, a wavelength of 10-15 mm, and a fiber diameter of 0.1-0.3 mm in a wave-shaped arrangement were laid in a mold with an inner wall roughness of Ra = 8 μm. The mold was preheated to 90°C for 20 min and fixed by electrostatic flocking. A 30 kV high-voltage electrostatic field was applied to the inner surface of the mold for 10 s. The rubber compound was then filled in and molded and vulcanized. The first stage was: 5 MPa low pressure, 120°C × 10 min; the second stage was: 15 MPa high pressure, 150°C × 20 min; the volume ratio of PET fiber to rubber compound was 1:4; (6) After vulcanization, the product was water-cooled at 50°C for 5 minutes and the surface was ground with a 400-mesh sand belt to a roughness of Ra = 5.2 μm. Example 12 A method for preparing a bionic spider web structure shock-absorbing rubber comprises the following steps: (1) 14 kg of PET fiber was immersed in 7 kg of RFL impregnation liquid with a solid content of 20% for 15 seconds, dried at 120°C for 3 minutes, pressed into a wavy shape by a corrugated die under tension control (8N), and quickly cooled to below 50°C to set the shape, thereby obtaining a wavy PET fiber with an amplitude of 2-3 mm, a wavelength of 10-15 mm, and a fiber diameter of 0.1-0.3 mm; (2) 20 kg of waste tire rubber powder with a particle size of 40-80 mesh was mixed with 0.2 kg of silane coupling agent KH-550, heated to 80 ° C, and stirred for activation for 30 minutes to obtain activated waste rubber powder; (3) 70 kg of natural rubber SCR10, 25 kg of butyl regenerated rubber 1675N, 3 kg of zinc oxide, 1 kg of stearic acid and 1 kg of antioxidant 4020 were mixed in an internal mixer at a mixing temperature of 160 ° C for 5 min; then activated waste rubber powder and 7 kg of graphite powder were added for a second mixing stage at a mixing temperature of 80 ° C, a rotor speed of 50 rpm and a mixing time of 8 min, and finally 5 kg of ceramic microbeads with a particle size of 20-50 μm were added; (4) Add 1.5 kg of sulfur and 0.8 kg of accelerator CZ into an open mill, pass through 5 times and mix well to obtain a rubber mix; (5) PET fibers with an amplitude of 2-3 mm, a wavelength of 10-15 mm, and a fiber diameter of 0.1-0.3 mm in a wave-shaped arrangement were laid in a mold with an inner wall roughness of Ra = 8 μm. The mold was preheated to 90°C for 20 min and fixed by electrostatic flocking. A 30 kV high-voltage electrostatic field was applied to the inner surface of the mold for 10 s. The rubber compound was then filled in and molded and vulcanized. The first stage was: 5 MPa low pressure, 120°C × 10 min; the second stage was: 15 MPa high pressure, 150°C × 20 min; the volume ratio of PET fiber to rubber compound was 1:4; (6) After vulcanization, the product was water-cooled at 50°C for 5 minutes and the surface was ground with a 400-mesh sand belt to a roughness of Ra = 7.0 μm. Example 13 A method for preparing a bionic spider web structure shock-absorbing rubber comprises the following steps: (1) 14 kg of PET fiber was immersed in 7 kg of RFL impregnation liquid with a solid content of 20% for 15 seconds, dried at 120°C for 3 minutes, pressed into a wavy shape by a corrugated die under tension control (8N), and quickly cooled to below 50°C to set the shape, thereby obtaining a wavy PET fiber with an amplitude of 2-3 mm, a wavelength of 10-15 mm, and a fiber diameter of 0.1-0.3 mm; (2) 20 kg of waste tire rubber powder with a particle size of 40-80 mesh was mixed with 0.2 kg of silane coupling agent KH-550, heated to 80 ° C, and stirred for activation for 30 minutes to obtain activated waste rubber powder; (3) 70 kg of natural rubber SCR10, 25 kg of butyl regenerated rubber 1675N, 3 kg of zinc oxide, 1 kg of stearic acid and 1 kg of antioxidant 4020 were mixed in an internal mixer at a mixing temperature of 160 ° C for 5 min; then activated waste rubber powder and 7 kg of graphite powder were added for a second mixing stage at a mixing temperature of 80 ° C, a rotor speed of 50 rpm and a mixing time of 8 min, and finally 5 kg of ceramic microbeads with a particle size of 20-50 μm were added; (4) Add 1.5 kg of sulfur and 0.8 kg of accelerator CZ into an open mill, pass through 5 times and mix well to obtain a rubber mix; (5) PET fibers with an amplitude of 2-3 mm, a wavelength of 10-15 mm, and a fiber diameter of 0.1-0.3 mm in a wave-shaped arrangement were laid in a mold with an inner wall roughness of Ra = 8 μm. The mold was preheated to 90°C for 20 min and fixed by electrostatic flocking. A 30 kV high-voltage electrostatic field was applied to the inner surface of the mold for 10 s. The rubber compound was then filled in and molded and vulcanized. The first stage was: 5 MPa low pressure, 120°C × 10 min; the second stage was: 15 MPa high pressure, 150°C × 20 min; the volume ratio of PET fiber to rubber compound was 1:4; (6) After vulcanization, the product was water-cooled at 50°C for 5 minutes and the surface was ground with a 400-mesh sand belt to a roughness of Ra = 9.4 μm. Comparative Example 1 The difference between this embodiment and embodiment 8 is that the PET fibers are arranged in a straight line. Specifically: A method for preparing a bionic spider web structure shock-absorbing rubber comprises the following steps: (1) 14 kg of PET fiber was immersed in 7 kg of RFL impregnation solution with a solid content of 20% for 15 seconds and dried at 120°C for 3 minutes to obtain pretreated PET fiber; (2) 20 kg of waste tire rubber powder with a particle size of 40-80 mesh was mixed with 0.2 kg of silane coupling agent KH-550, heated to 80 ° C, and stirred for activation for 30 minutes to obtain activated waste rubber powder; (3) 75 kg of natural rubber SCR10, 25 kg of butyl regenerated rubber 1675N, 3 kg of zinc oxide, 1 kg of stearic acid and 1 kg of antioxidant 4020 were mixed in an internal mixer at a mixing temperature of 160 ° C for 5 min; then activated waste rubber powder and 7 kg of graphite powder were added for a second mixing stage at a mixing temperature of 80 ° C, a rotor speed of 45 rpm and a mixing time of 8 min, and finally 5 kg of ceramic microbeads with a particle size of 20-50 μm were added; (4) Add 1.5 kg of sulfur and 0.8 kg of accelerator CZ into an open mill, pass through 5 times and mix well to obtain a rubber mix; (5) The pretreated PET fiber was laid in a mold with an inner wall roughness of Ra = 8 μm. The mold was preheated to 90 °C for 20 min and fixed by electrostatic flocking. A 30 kV high-voltage electrostatic field was applied to the inner surface of the mold for 10 s. The rubber compound was then filled in and molded for vulcanization. The first stage was 5 MPa low pressure, 120 °C × 10 min; the second stage was 15 MPa high pressure, 150 °C × 20 min. The volume ratio of PET fiber to rubber compound was 1:4. (6) After vulcanization, the product was water-cooled at 50°C for 5 minutes and the surface was ground with a 400-mesh sand belt to a roughness of Ra = 8.3 μm. Comparative Example 2 The difference between this embodiment and embodiment 8 is that the titanate coupling agent NDZ-201 is used instead of KH-550. Comparative Example 3 The difference between this embodiment and embodiment 8 is that conventional one-stage vulcanization (150° C.×30 min, 10 MPa constant pressure) is adopted. Specifically: A method for preparing a bionic spider web structure shock-absorbing rubber comprises the following steps: (1) 14 kg of PET fiber was immersed in 7 kg of RFL impregnation liquid with a solid content of 20% for 15 seconds, dried at 120°C for 3 minutes, pressed into a wavy shape by a corrugated die under tension control (8N), and quickly cooled to below 50°C to set the shape, thereby obtaining a wavy PET fiber with an amplitude of 2-3 mm, a wavelength of 10-15 mm, and a fiber diameter of 0.1-0.3 mm; (2) 20 kg of waste tire rubber powder with a particle size of 40-80 mesh was mixed with 0.2 kg of silane coupling agent KH-550, heated to 80 ° C, and stirred for activation for 30 minutes to obtain activated waste rubber powder; (3) 75 kg of natural rubber SCR10, 25 kg of butyl regenerated rubber 1675N, 3 kg of zinc oxide, 1 kg of stearic acid and 1 kg of antioxidant 4020 were mixed in an internal mixer at a mixing temperature of 160 ° C for 5 min; then activated waste rubber powder and 7 kg of graphite powder were added for a second mixing stage at a mixing temperature of 80 ° C, a rotor speed of 45 rpm and a mixing time of 8 min, and finally 5 kg of ceramic microbeads with a particle size of 20-50 μm were added; (4) Add 1.5 kg of sulfur and 0.8 kg of accelerator CZ into an open mill, pass through 5 times and mix well to obtain a rubber mix; (5) PET fibers with an amplitude of 2-3 mm, a wavelength of 10-15 mm, and a fiber diameter of 0.1-0.3 mm were laid in a mold with an inner wall roughness of Ra = 8 μm. The mold was preheated to 90°C for 20 min and fixed by electrostatic flocking. A 30 kV high-voltage electrostatic field was applied to the inner surface of the mold for 10 s. The mold was then filled with the rubber compound and molded and vulcanized at a constant pressure of 10 MPa at 150°C for 30 min. The volume ratio of the PET fiber to the rubber compound was 1:4. (6) After vulcanization, the product was water-cooled at 50°C for 5 minutes and the surface was ground with a 400-mesh sand belt to a roughness of Ra = 8.3 μm. Comparative Example 4 The difference between this embodiment and embodiment 8 is that carbon black N330 is used instead of ceramic microbeads, and the graphite powder is reduced to 3 kg. Specifically: A method for preparing a bionic spider web structure shock-absorbing rubber comprises the following steps: (1) 14 kg of PET fiber was immersed in 7 kg of RFL impregnation liquid with a solid content of 20% for 15 seconds, dried at 120°C for 3 minutes, pressed into a wavy shape by a corrugated die under tension control (8N), and quickly cooled to below 50°C to set the shape, thereby obtaining a wavy PET fiber with an amplitude of 2-3 mm, a wavelength of 10-15 mm, and a fiber diameter of 0.1-0.3 mm; (2) 20 kg of waste tire rubber powder with a particle size of 40-80 mesh was mixed with 0.2 kg of silane coupling agent KH-550, heated to 80 ° C, and stirred for activation for 30 minutes to obtain activated waste rubber powder; (3) 75 kg of natural rubber SCR10, 25 kg of butyl regenerated rubber 1675N, 3 kg of zinc oxide, 1 kg of stearic acid and 1 kg of antioxidant 4020 were mixed in an internal mixer at a mixing temperature of 160 ° C for 5 min; then activated waste rubber powder and 3 kg of graphite powder were added for a second mixing stage at a mixing temperature of 80 ° C, a rotor speed of 45 rpm, and a mixing time of 8 min. Finally, 5 kg of carbon black N330 was added; (4) Add 1.5 kg of sulfur and 0.8 kg of accelerator CZ into an open mill, pass through 5 times and mix well to obtain a rubber mix; (5) PET fibers with an amplitude of 2-3 mm, a wavelength of 10-15 mm, and a fiber diameter of 0.1-0.3 mm in a wave-shaped arrangement were laid in a mold with an inner wall roughness of Ra = 8 μm. The mold was preheated to 90°C for 20 min and fixed by electrostatic flocking. A 30 kV high-voltage electrostatic field was applied to the inner surface of the mold for 10 s. The rubber compound was then filled in and molded and vulcanized. The first stage was: 5 MPa low pressure, 120°C × 10 min; the second stage was: 15 MPa high pressure, 150°C × 20 min; the volume ratio of PET fiber to rubber compound was 1:4; (1)(6) After vulcanization, it is water-cooled at 50℃×5min, and the surface is ground with a 400-mesh sand belt to a roughness of Ra=8.3μm. Comparative Example 5 The difference between this embodiment and embodiment 8 is that the electrostatic flocking step is eliminated. Specifically: A method for preparing a bionic spider web structure shock-absorbing rubber comprises the following steps: (1) 14 kg of PET fiber was immersed in 7 kg of RFL impregnation liquid with a solid content of 20% for 15 seconds, dried at 120°C for 3 minutes, pressed into a wavy shape by a corrugated die under tension control (8N), and quickly cooled to below 50°C to set the shape, thereby obtaining a wavy PET fiber with an amplitude of 2-3 mm, a wavelength of 10-15 mm, and a fiber diameter of 0.1-0.3 mm; (2) 20 kg of waste tire rubber powder with a particle size of 40-80 mesh was mixed with 0.2 kg of silane coupling agent KH-550, heated to 80 ° C, and stirred for activation for 30 minutes to obtain activated waste rubber powder; (3) 75 kg of natural rubber SCR10, 25 kg of butyl regenerated rubber 1675N, 3 kg of zinc oxide, 1 kg of stearic acid and 1 kg of antioxidant 4020 were mixed in an internal mixer at a mixing temperature of 160 ° C for 5 min; then activated waste rubber powder and 7 kg of graphite powder were added for a second mixing stage at a mixing temperature of 80 ° C, a rotor speed of 45 rpm and a mixing time of 8 min, and finally 5 kg of ceramic microbeads with a particle size of 20-50 μm were added; (4) Add 1.5 kg of sulfur and 0.8 kg of accelerator CZ into an open mill, pass through 5 times and mix well to obtain a rubber mix; (5) PET fibers with an amplitude of 2-3 mm, a wavelength of 10-15 mm, and a fiber diameter of 0.1-0.3 mm were laid in a mold with an inner wall roughness of Ra = 8 μm. The mold was preheated to 90°C for 20 min, and then filled with the rubber compound. The mold was vulcanized and molded. The first stage was 5 MPa low pressure, 120°C × 10 min; the second stage was 15 MPa high pressure, 150°C × 20 min; the volume ratio of PET fiber to rubber compound was 1:4; (6) After vulcanization, the product was water-cooled at 50°C for 5 minutes and the surface was ground with a 400-mesh sand belt to a roughness of Ra = 8.3 μm. Comparative Example 6 The difference between this embodiment and embodiment 8 is that the surface grinding step is eliminated. Specifically: A method for preparing a bionic spider web structure shock-absorbing rubber comprises the following steps: (1) 14 kg of PET fiber was immersed in 7 kg of RFL impregnation liquid with a solid content of 20% for 15 seconds, dried at 120°C for 3 minutes, pressed into a wavy shape by a corrugated die under tension control (8N), and quickly cooled to below 50°C to set the shape, thereby obtaining a wavy PET fiber with an amplitude of 2-3 mm, a wavelength of 10-15 mm, and a fiber diameter of 0.1-0.3 mm; (2) 20 kg of waste tire rubber powder with a particle size of 40-80 mesh was mixed with 0.2 kg of silane coupling agent KH-550, heated to 80 ° C, and stirred for activation for 30 minutes to obtain activated waste rubber powder; (3) 75 kg of natural rubber SCR10, 25 kg of butyl regenerated rubber 1675N, 3 kg of zinc oxide, 1 kg of stearic acid and 1 kg of antioxidant 4020 were mixed in an internal mixer at a mixing temperature of 160 ° C for 5 min; then activated waste rubber powder and 7 kg of graphite powder were added for a second mixing stage at a mixing temperature of 80 ° C, a rotor speed of 45 rpm and a mixing time of 8 min, and finally 5 kg of ceramic microbeads with a particle size of 20-50 μm were added; (4) Add 1.5 kg of sulfur and 0.8 kg of accelerator CZ into an open mill, pass through 5 times and mix well to obtain a rubber mix; (5) PET fibers with an amplitude of 2-3 mm, a wavelength of 10-15 mm, and a fiber diameter of 0.1-0.3 mm in a wave-shaped arrangement were laid in a mold with an inner wall roughness of Ra = 8 μm. The mold was preheated to 90°C for 20 min and fixed by electrostatic flocking. A 30 kV high-voltage electrostatic field was applied to the inner surface of the mold for 10 s. The rubber compound was then filled in and molded and vulcanized. The first stage was: 5 MPa low pressure, 120°C × 10 min; the second stage was: 15 MPa high pressure, 150°C × 20 min; the volume ratio of PET fiber to rubber compound was 1:4; (6) After vulcanization, the surface was cooled in water at 50°C for 5 minutes and the surface roughness was measured to be Ra = 15.1 μm. Performance testing: Determination of radial stiffness: According to the test standard: ISO 3384-1 "Rubber, vulcanized or thermoplastic rubber - Determination of compression stress relaxation"; Determination of compression set: According to the test standard: GB / T 7759.1-2015 "Rubber, vulcanized or thermoplastic rubber - Determination of compression set"; The results are shown in Table 1 below: Table 1 Determination of dynamic heat generation: According to the test standard GB / T 1687-2016 "Vulcanized rubber - Determination of temperature rise and fatigue resistance in flexure tests"; Determination of wear: According to the test standard GB / T 9867-2008 "Rubber, vulcanized or thermoplastic - Determination of wear resistance"; Determination of fatigue life: According to the test standard ASTM D4482-11(2021) "Standard test method for tensile cyclic fatigue of rubber"; Determination of surface friction coefficient: According to the test standard: ASTM D1894-11 "Test method for static and dynamic coefficient of friction of plastic film and sheeting"; The results are shown in Table 2 below: Table 2 As shown in Tables 1 and 2, the use of straight fibers in Comparative Example 1 increases stiffness compared to the Example due to the lack of deformation buffering when the fibers are axially loaded. The wave structure absorbs energy through bending deformation, achieving the optimal stiffness-flexibility balance at an amplitude of 2-3 mm. A wavelength of 10-15 mm ensures that adjacent wave peaks do not interfere with each other. The increased compression set in Comparative Example 2 compared to Example 8 is primarily due to the formation of Si-O-rubber chemical bonds by KH-550, while titanate is only physically adsorbed and prone to slippage. Furthermore, ceramic microbeads inhibit molecular chain slip more effectively than carbon black, reducing deformation. Comparative Example 4 demonstrates that graphite powder and ceramic microbeads form a thermally conductive network, significantly improving heat dissipation efficiency compared to a pure carbon black system. As can be seen from Example 10 and Comparative Example 1, wavy fibers cause crack bifurcation, dissipating energy, while straight fibers concentrate stress at their ends, thereby improving fatigue life. In terms of roughness and friction coefficient, when Ra = 5.2 μm and the friction coefficient is 0.58, the ceramic microbeads are not fully exposed; when Ra = 8.3 μm and the friction coefficient is 0.66, the micro-protrusion height is optimal; and when Ra = 15.1 μm and the friction coefficient is 0.88, the excessively deep valley bottom leads to mechanical interlocking. In the present invention, ceramic microbeads (20-50 μm) act as the hard phase, bearing the primary friction, while graphite powder acts as the lubricating phase, reducing adhesive wear. This combination results in only approximately 35% of the wear of a carbon black system.

Claims

1. A shock-absorbing rubber material with a bionic spider web structure, characterized in that: include: The radial reinforcement unit is composed of high modulus fibers arranged in a wavy pattern, and the surface of the high modulus fibers is pre-treated with RFL impregnation liquid. The circumferential damping unit is composed of a composite matrix of natural rubber and recycled rubber, in which waste tire rubber powder and graphite powder are dispersed. Friction energy dissipation nodes: formed by ceramic micro-beads evenly distributed in the rubber matrix, and the surface of the nodes and the rubber matrix together form a micro-protrusion structure; The radial reinforcement unit, the annular damping unit and the friction energy dissipation node are integrally formed by compression molding and vulcanization to form a three-dimensional interconnected bionic spider web structure.

2. The shock-absorbing rubber material with a bionic spider web structure according to claim 1, characterized in that: The high modulus fibers arranged in a wave shape in the radial reinforcement unit have an amplitude of 2-3 mm, a wavelength of 10-15 mm, and a fiber diameter of 0.1-0.3 mm.

3. The method for preparing a bionic spider web structure shock-absorbing rubber according to claim 1 or 2, characterized in that: Calculated by weight, comprising the following steps: (1) 10-15 parts of high modulus fiber are immersed in 5-8 parts of RFL impregnation liquid, taken out and dried, pressed into a wavy shape by a corrugated mold under tension control, and quickly cooled and shaped to obtain a high modulus fiber with wavy arrangement; (2) mixing 20 parts of waste tire rubber powder with 0.2 parts of silane coupling agent, heating and stirring to activate the mixture, and obtaining activated waste rubber powder; (3) 60-80 parts of natural rubber, 20-30 parts of recycled rubber and 5 parts of compounding agent are mixed in an internal mixer for one stage, then activated waste rubber powder and 3-8 parts of graphite powder are added for two stage mixing, and finally 5 parts of ceramic microbeads are added; (4) adding the vulcanizing system into the open mill, mixing thinly and uniformly, and obtaining a rubber compound; (5) Laying the wavy high modulus fibers in a mold, fixing them with electrostatic flocking, filling them with rubber mix, and molding and vulcanizing them to shape them; (6) After vulcanization, water cooling and surface grinding are performed to a roughness of Ra = 5-10 μm.

4. The preparation method according to claim 3, characterized in that In the step (1), the solid content of the RFL impregnation solution is 20%, the impregnation time is 10-15 seconds, and the drying condition is 120° C.×3 minutes.

5. The preparation method according to claim 3, characterized in that In the step (3), the first stage mixing temperature is 160° C. and the time is 5 minutes; the second stage mixing temperature is 80° C., the rotor speed is 45-50 rpm, and the time is 8 minutes.

6. The preparation method according to claim 3, characterized in that In the step (4), the vulcanization system includes 1.5 parts by weight of sulfur and 0.8 parts by weight of accelerator CZ, and the number of thin passes is 5.

7. The preparation method according to claim 3, characterized in that In the step (5), the mold inner wall roughness Ra=8 μm; the mold preheating temperature is 80-100° C., and the preheating time is 15-20 minutes.

8. The preparation method according to claim 3, characterized in that The electrostatic flocking conditions in step (5) are voltage 30 kV and time 10 s.

9. The preparation method according to claim 3, characterized in that The vulcanization setting conditions in the step (5) are as follows: first stage: 5 MPa low pressure, 120° C.×10 min; second stage: 15 MPa high pressure, 150° C.×20 min.

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