126results about How to "Reduce rolling resistance" patented technology

The invention discloses low-VOC (volatile organic compound) environment-friendly end-capped mercapto silane as well as a preparation method and application thereof.The preparation method comprises the following steps: by taking chloroalkyl trialkoxysilane and linear alkyl polyether alcohol as raw materials, reacting to form an intermediate c; reacting alkyl acyl chloride with sodium sulfide or sodium hydrosulfide to form an intermediate e; and reacting the intermediate c with the intermediate e to obtain a final product. Silane is used as a rubber auxiliary agent, so that the volatilization amount of alcohols in the internal mixing process of a rubber compound can be greatly reduced, the emission amount of VOC during operation is reduced, meanwhile, the vulcanization performance of a rubber material can be improved, the scorching time of the rubber material can be prolonged, the reinforcing effect of vulcanized rubber can be improved, the physical and mechanical properties of the vulcanized rubber can be improved, and the wet skid resistance of tread rubber can be improved; therefore, the environment-friendly rubber auxiliary agent is a multifunctional environment-friendly rubber auxiliary agent.

The invention discloses a wear-resistant tire tread rubber and a preparation method thereof, belonging to the technical field of compositions of polymer compounds. The wear-resistant tire tread rubber comprises the following components, measured in parts by weight: 40-60 parts of natural rubber, 25-35 parts of styrene-butadiene rubber, 15-25 parts of isoprene rubber, 25-30 parts of modified white carbon black, 20-25 parts of composite filler, 15-20 parts of N330 carbon black, 2-3 parts of stearic acid, 1-2 parts of calcium oxide, 1-2 parts of zinc oxide, 2.5-3.5 parts of antioxidant 4020, 8-12 parts of environmentally friendly aromatic oil TDAE, 0.1-0.5 parts of polyimide, 1.2-2 parts of sulfur, 1-2 parts of accelerator TMTD, 0.5-1 parts of accelerator NOBS and 1-3 parts of anti-reversion agent HTS. The wear-resistant tire tread rubber prepared by the invention can improve the anti-wet skid capability of the tire using the tread rubber, reduce its rolling resistance, and enable the tread rubber to have higher wear resistance, tensile strength and elongation at break.

The invention provides a low-rolling-resistance and high-wet-grabbing pneumatic radial tire, which belongs to the technical field of tires, and comprises a tread and a circumferential groove extending along the circumferential direction of the tread, the contour between the highest point of the tread and the end point of one side of the tread is sequentially divided into a first arc section, a second arc section, a third arc section and a fourth arc section, the radius TR1 of the first section of arc, the radius TR2 of the second section of arc, the radius TR3 of the third section of arc and the radius TR4 of the fourth section of arc meet the following relation: TR1: TR2: TR3: TR4 = 2.3: 1.9: 1.6: 1; the number of the circumferential grooves is five, the five circumferential grooves sequentially comprise a central water-drop-shaped pattern groove, two pattern grooves close to the center and two shoulder water-drop-shaped pattern grooves from the center to the two sides of the tread, and the central water-drop-shaped pattern groove and the shoulder water-drop-shaped pattern grooves are grooves which are self-closed in a loading state; according to the invention, the tire structure design, the pattern design and the formula design are optimized, so that the tire has the ultimate durability, low rolling resistance and full-life-cycle high-wet-grip performance at the same time.

The invention provides a light, high-strength and low-rolling-resistance tire for a new energy automobile and a preparation method of the light, high-strength and low-rolling-resistance tire, and relates to the technical field of tires. The light, high-strength and low-rolling-resistance tire for the new energy automobile comprises a tread and a sidewall, wherein the tread and the sidewall are both composed of tread rubber comprising the following components: low-epoxy-degree epoxidized solution polymerized styrene-butadiene rubber with the epoxy degree of 6.5-8.4%, high-epoxy-degree epoxidized solution polymerized styrene-butadiene rubber with the epoxy degree of 21.2-23.7%, natural rubber, carbon black, white carbon black and a rubber additive. By optimizing the formula of the tread rubber, the lightweight of the tire is realized, the rolling resistance of the tire is effectively reduced, the strength and aging resistance of the tire are improved, and the service life of the tire is prolonged.

The invention discloses a vehicle control method and device, electronic equipment and a storage medium, and belongs to the technical field of vehicles. The method comprises the following steps: acquiring a first vehicle speed and a tire pressure value of a vehicle in a driving process under the condition that an endurance auxiliary function is started; under the condition that the first vehicle speed is larger than or equal to a first preset value, if the tire pressure value is smaller than a first preset range or is within the first preset range, a second vehicle speed of the vehicle is obtained after first preset time; and under the condition that the second vehicle speed is larger than or equal to the first preset value, the tire pressure value is increased to a second preset range, so that the tire pressure value of the vehicle is matched with the vehicle speed. When the vehicle speed is high, the vehicle speed is obtained after a period of time, and the tire pressure is actively increased when the vehicle speed is stabilized at the preset value or above, so that the rolling resistance of wheels is reduced, the endurance of the vehicle is improved, and the problems of energy waste and comfort reduction caused by frequent adjustment of the tire pressure are solved; therefore, the reduction of comfort is reduced to a certain extent while the endurance of the vehicle is improved.

The invention provides an elastic damping wheel set and a carrier. The elastic damping wheel set comprises an elastic seat, the elastic seat comprises an outer pipe and an inner pipe, the outer pipe and the inner pipe are integrally connected through a plurality of spokes, and a hollow hole is formed between every two adjacent spokes; the wheel body is coaxially provided with a shaft assembly, the shaft assembly penetrates through the inner pipe and is assembled with the inner wall of the inner pipe, and the wheel body has the rotational degree of freedom relative to the elastic seat; and the supporting arm is connected with the outer wall of the outer pipe, and the supporting arm can be assembled to a carrier. The elastic seat does not rotate, the wheel body rotates, the elastic seat participates in elastic buffering, and the wheel body participates in rolling. Therefore, the wheel has the advantages of elastic buffering and low rolling resistance at the same time, and the elastic buffering can cope with vibration of the wheel body in all directions.

The invention relates to a vehicle driving device, and belongs to the field of transportation tools. A driving device of an existing vehicle has many defects such as large rolling resistance, large wind resistance, large occupied space of wheels, small effective space of the vehicle, serious safety problems caused by tire burst when the vehicle runs at a high speed and the like. The vehicle driving device is composed of two sets of devices arranged on the left side and the right side of a vehicle respectively, each set of device is provided with a plurality of loading wheels which are connected to a vehicle body and make contact with the ground through elastic components, and each loading wheel is connected with a chain wheel or a belt wheel or a gear or other similar components. A driving gear or / and a driven gear is / are connected with the power output end, and one or more chains or belts or toothed belts or other similar components are / is / are connected with chain wheels or belt wheels or gears on the loading wheels. Through the design, the defects in the prior art can be overcome.

A rubber composite material based on high-butadiene-content iron-based butadiene-pentadiene rubber, and its preparation method and application. The present invention belongs to the field of rubber materials and their preparation. The purpose of the present invention is to solve the technical problem that the existing modified composite rubber cannot balance the "devil's triangle" performance of rubber. The material of the present invention is prepared from olefin rubber, reinforcing filler, plasticizer, zinc oxide, stearic acid, sulfur, silane coupling agent, accelerator and antioxidant, and the olefin rubber is mixed with natural rubber, solution-polymerized styrene-butadiene rubber, butadiene rubber and iron-based butadiene-pentadiene rubber. The molecular weight of the iron-based butadiene-pentadiene rubber is 50-80w, the molecular weight distribution is 1.5-2.5, the sum of the vinyl and propylene side group contents is 30-50%, and the molar ratio of monomer butadiene to isoprene during the preparation process is (1.5-9): 1. The material of the present invention is used as a tire tread rubber. The present invention effectively balances the "devil's triangle" performance of the rubber material.

The invention relates to the technical field of tire manufacturing, in particular to a discontinuous winding belted layer structure, application of the discontinuous winding belted layer structure, an all-steel radial tire and a preparation method of the all-steel radial tire. The belted layer comprises a 1 # belted layer and a 2 # belted layer, the 1 # belted layer is attached to the tire body and is the innermost side in the radial direction, the 2 # belted layer is attached to the 1 # belted layer, the width of the 2 # belted layer is larger than that of the 1 # belted layer, and the belted layer further comprises two groups of discontinuous winding belted layers which are in bilateral symmetry along the center line of the tire tread and are arranged on the same layer surface; the winding belted layer is arranged on the shoulder part of the upper surface of the 2 # belted layer; and the winding belted layer is formed by winding nylon or a steel wire from the shoulder part to the middle part. According to the design of winding the belted layer, the circumferential hooping effect of the belted layer on the tire is increased, and compared with the design of full winding or increasing the belted layer, the cost is reduced, performance excess is avoided, and tire abrasion is improved.

The invention discloses a composite tire and a manufacturing method thereof. The method comprises surface pretreatment of a tire carcass, configuration of a tread treatment agent, and casting and molding the composite tire tread using a unique process. The method has the characteristics of simple manufacturing process and low cost. The manufactured composite tire has a series of outstanding advantages such as good elasticity, low rolling resistance, low fuel consumption, good tread wear resistance, etc., has high cost performance, and is easy to industrialize.

The utility model relates to a tubeless all-steel truck radial tire tread pattern structure which comprises a tire tread, and further comprises longitudinal straight groove patterns which are respectively and uniformly distributed from a central line to two sides in the circumferential direction of the tire tread and comprise a first longitudinal straight groove pattern and a second longitudinal straight groove pattern; the transverse inclined grooves are connected between the adjacent longitudinal straight groove patterns and comprise first transverse inclined straight grooves connected with the adjacent first longitudinal straight groove patterns, second transverse inclined straight grooves connected with the adjacent first longitudinal straight groove patterns and second longitudinal straight groove patterns, and Z-shaped transverse inclined grooves; the inclination direction of the first transverse inclined straight groove is opposite to that of the second transverse inclined straight groove, and the inclination direction of the second transverse inclined straight groove is consistent with that of the Z-shaped transverse inclined groove. Compared with the prior art, the utility model can effectively solve the problems of blockage of broken stones or foreign matters and low drainage efficiency, and has good guidance quality, drainage performance, road holding force, sideslip resistance and multi-road-condition adaptability under the condition of high-speed driving.

The run-flat tire comprises a tire tread, a tire side wall, a tire body and a tire bead, and the tire bead is not provided with a bead filler structure and is only composed of a steel wire ring which is gradually narrowed from bottom to top; the run-flat tire further comprises inner supporting rubber, the section of the inner supporting rubber is in a crescent shape, and the inner supporting rubber is located between the tire side lining and the tire body cord fabric. The section of the outer supporting rubber is triangular, and the outer supporting rubber is located between the tire body cord fabric and the tire side wall; the wear-resistant rubber is in contact with the rim; the sidewall rubber is covered on the carcass ply; wherein the outer support rubber, the wear-resistant rubber and the sidewall rubber adopt a pre-composite structural design. On the premise that apex does not exist, the modulus and size relation between all parts of the tire side wall is optimized, and the running time and distance of the tire in the air shortage state are prolonged; in addition, the design concept of pre-compounding the outer support rubber and the sidewall is adopted, so that the production complexity can be reduced.

The invention discloses integrated functionalized itaconate / butadiene / isoprene bio-based rubber and vulcanized rubber and a preparation method thereof, and relates to the technical field of rubber synthesis, the number-average molecular weight of the bio-based rubber is 50,000-1,000,000, preferably 100,000-8,000; the molecular weight distribution is 1.5 to 10.0, preferably 2.0 to 5.0. The high-performance bio-based rubber is prepared through copolymerization of the itaconate monomer, the butadiene monomer, the isoprene monomer and the functionalized monomer, the wet skid resistance of the material is obviously improved, meanwhile, rolling resistance is not lost, an effective thought is provided for preparation of green tires, and excellent comprehensive performance is shown in the aspect of tire application. Through reasonable structural design, the comprehensive performance of the integrated functionalized itaconate / butadiene / isoprene bio-based rubber can be compared with that of functionalized solution polymerized styrene-butadiene rubber (SSBR), and the bio-based integrated rubber is not reported before.

The utility model discloses a low-rolling-resistance tire and relates to the technical field of tires. The tire comprises a tire body and an airtight layer, a first tread, a second tread and a third tread are arranged on the peripheral surface of the tire body, inclined grooves are evenly formed in the first tread, lateral reinforcing ribs are symmetrically, evenly and fixedly installed on the peripheral surface in the airtight layer, and internal reinforcing ribs are fixedly installed on the peripheral surface of the inner wall of the airtight layer. By arranging the inclined grooves, the lateral reinforcing ribs, the internal reinforcing ribs and the second steel rings, when the tire rotates, the lateral reinforcing ribs and the internal reinforcing ribs can improve the anti-deformation capacity of the tire, deformation of the area, making contact with the road surface, of the wheel during rolling is reduced, and the service life of the tire is prolonged. The elastic hysteresis loss of the middle part of the tread and the tire side part is reduced, the tire rolling resistance is reduced, and the practicability is high.

The invention discloses a novel rubber functional composition for bicycle tire production, and belongs to the technical field of rubber production. Comprising the following raw materials in parts by mass: 25-30 parts of oil-extended solution polymerized styrene-butadiene rubber, 75-120 parts of oil-extended emulsion polymerized styrene-butadiene rubber, 10-25 parts of natural rubber, 5-15 parts of cis-butadiene rubber, 45-65 parts of white carbon black, 15-30 parts of modified carbon fiber, 10-25 parts of carbon black, 3-5 parts of homogeneous resin, 20-25 parts of wet-skid-resistant resin, 22-30 parts of aromatic oil, 5-10 parts of an anti-aging agent, 8-10 parts of an active agent, 3-5 parts of sulfur and 4-5 parts of an accelerant. By improving the components and proportion of the rubber composition, it is ensured that the rubber composition has excellent mechanical properties and hardness, and meanwhile, the prepared rubber composition has both high wear resistance and low rolling resistance.

The utility model discloses a kind of all terrain loaders of wheel-track composite drive, it is related to engineering technical field, comprising: vehicle body and at least one group wheel-track switching walking mechanism, wherein each group wheel-track switching walking mechanism includes: driving shaft, for receiving power input;Multiple tensioning wheel hubs, by multiple tensioning hydraulic devices and multiple wheel-track switching telescopic hydraulic devices are installed on the support;Track, it is arranged at the outside of tensioning wheel hub, annular protrusion or groove is arranged in its inside side;Tensioning hydraulic device and wheel-track switching telescopic hydraulic device are used to drive tensioning wheel hub to realize displacement and attitude change.The utility model sets up tensioning hydraulic device and wheel-track switching telescopic hydraulic device to drive the tensioning wheel hub to realize displacement and attitude change by being arranged as wheel-track switching walking mechanism, make track switch between circle and polygon, to reach the purpose of wheel-track switching of walking mechanism.

The utility model provides a tire tread structure and a tire with the same, the tire tread structure comprises at least four longitudinal grooves, and the longitudinal grooves extend along the circumferential direction of the tire and are arranged at intervals along the width direction of the tire so as to divide a tread into tire shoulder pattern parts and a plurality of middle pattern parts positioned between two tire shoulder pattern parts; the longitudinal grooves adjacent to the tire shoulder pattern parts have the width W1, the longitudinal grooves located between every two adjacent middle pattern parts have the width W2, and the width W1 and the width W2 meet the condition that W1 is larger than or equal to 0.865 W2 and smaller than or equal to 0.869 W2; wherein the plurality of middle pattern parts comprise a central pattern part and a tire crown pattern part, and the width W3 of the tire shoulder pattern part, the width W4 of the central pattern part and the width W5 of the tire crown pattern part meet the following conditions: 1.3 W4 < = W3 < = 1.7 W4, and 1.3 W5 < = W3 < = 1.7 W5. The problem that a tire tread structure cannot give consideration to the travelled distance and the traveling noise of the electric vehicle is solved.

Provided is a pneumatic tire having excellent durability at a belt end while achieving a reduction in rolling resistance. This pneumatic tire is characterized in that: in the center of the tire, the thickness of the first belt layer is 1.00 mm or less and the thickness of the second belt layer is 1.00 mm or less; b / a is 1.8 to 4.0 when the shortest distance in the tire center portion between the cord of the second belt layer and the cord of the first belt layer is denoted as a and the shortest distance between the outermost cord of the second belt layer and the cord of the first belt layer is denoted as b; at the belt end, the end rubber is arranged in a given manner on the inside of the first belt layer in the tire radial direction, between the first belt layer and the second belt layer, and on the outside of the second belt layer in the tire radial direction.

Provided is a pneumatic tire that can provide reduced rolling resistance and improved off-road durability performance, wet performance, and snow performance and provide these performances in a compatible manner to a high degree. The cap tread layer (11) is made of a rubber composition in which 50 parts by mass to 100 parts by mass of silica and 5 parts by mass to 25 parts by mass of carbon black are blended per 100 parts by mass of diene rubber containing 50 mass% or more of natural rubber and 20 mass% or more and 40 mass% or less of styrene-butadiene rubber. As the styrene-butadiene rubber, terminal-modified styrene-butadiene rubber having a vinyl content of 35 mass% to 70 mass% is used. As the carbon black, carbon black having a nitrogen adsorption specific surface area N2SA of less than 130 m2 / g is used. The rubber composition constituting the cap tread layer (11) is set to have a tensile product TB × EB of 12000 or more and a hardness of 60 or more and 70 or less.

The present application relates to a method for processing cords for reinforcing layers of semi-steel radial tires and tires for new energy vehicles, belonging to the technical field of vehicle tires. The method comprises the following steps: S1, twisting PEN yarn and PA6.6 yarn twice in the opposite direction of their pre-twisted direction to form a composite cord, and the composite cord has a twist coefficient within the range of 100-150 and a shrinkage rate within 0-0.5% at 100°C and a shrinkage rate within 0-1.5% at 180°C, and the linear density of the composite cord is 2000-3000 dtex; S2, first immersing the composite cord in a first adhesive, drying at 100-120°C for 1-2 minutes, then immersing it in a second adhesive, and drying at 130-150°C for 1-5 minutes; S3, placing the dried composite cord in the range of 190-210°C for thermal bonding, the thermal bonding process takes 80-120 seconds, and in the thermal bonding process, the elongation of the composite cord is 0.5-1.5%. The cord layer prepared by the cord treated in the present application can be used as a tire reinforcement layer to significantly improve the heat resistance and adhesion of the tire and the high-speed durability in a high-speed environment or a high-load environment.

To provide a rubber composition for a tire by which excellent steering stability and wet performance are achieved and temperature dependency of satisfactory low rolling resistance is reduced. The rubber composition for a tire contains, in 100 parts by mass of a diene rubber containing 55 mass% or more of a terminal-modified styrene-butadiene rubber, from 60 to 130 parts by mass of silica, from 10 to 50 parts by mass of a thermoplastic resin, and from 2 to 20 mass% of a silane coupling agent with respect to the mass of the silica, the terminal-modified styrene-butadiene rubber having a vinyl content of from 9 to 45 mol% and a glass transition temperature of -45°C or lower, and containing a polyorganosiloxane structure or an aminosilane structure at a terminal.

A tire tread rubber composite material based on high extraction resistance liquid rubber and a preparation method thereof. The present invention belongs to the field of rubber materials and their preparation. The purpose of the present invention is to solve the technical problems of poor extraction resistance and decreased mechanical properties of traditional plasticizers. The material of the present invention is prepared from olefin rubber, iron-based butyl-pentane liquid rubber, zinc oxide, plasticizer, sulfur, accelerator and antioxidant, and the olefin rubber is mixed with natural rubber, butadiene rubber, styrene-butadiene rubber and iron-based butyl-pentane rubber, and the molecular weight of the iron-based butyl-pentane liquid rubber is 0.5-5w, and the total content of vinyl side groups and propenyl side groups is 30-60%. The present invention introduces iron-based butyl-pentane liquid rubber into the rubber formula, while ensuring the processing performance of the rubber composite material, the extraction resistance rate is increased by 70%, and the mechanical properties of the rubber material are improved, the tensile properties are increased by about 10.34%, and the tear resistance is increased by about 11.54%.

In the tire (1), when a point (Al) on a side profile located at the same position in the tire radial direction with respect to the radially outer end of the bead cores (11, 11) is defined, a distance (Hl) in the tire radial direction from a tire maximum width position (Ac) to the point (Al) is defined. A point Al'on the side profile at a radial position 70 [%] from the tire maximum width position Ac at a distance Hl is defined, and a point Am on the side profile at a radial position 35 [%] from the tire maximum width position Ac at a distance Hl is defined. The radius of curvature RO [mm] of an arc passing through the tire maximum width position Ac, the point Al'and the point Am when the tire is attached to a predetermined rim, a predetermined internal pressure is applied, and the tire is in an unloaded state is within the range of 0.20 < = RO / SH < = 1.20 with respect to the tire cross-sectional height SH [mm].

The tire (1) of the present application has a pair of bead cores (11, 11), a carcass layer (13) erected on the bead cores (11, 11), and a belt layer (14) disposed on the radially outer side of the carcass layer (13). Furthermore, the tire outer diameter OD [mm] is in the range of 200 ≤ OD ≤ 660, and the total tire width SW [mm] is in the range of 100 ≤ SW ≤ 400. Furthermore, the breaking strength Tcs [N / 50 mm] per 50 [mm] width of the carcass ply constituting the carcass layer (13) is in the range of 17 ≤ Tcs / OD ≤ 120 with respect to the tire outer diameter OD [mm].

The present application relates to a multi-material composite parallel layered bead structure and design method, and belongs to the field of tire structure and manufacturing method thereof. The cross-sectional shape of the bead is hexagonal, the bead is composed of multiple composite layers stacked along the radial direction of the cross-section of the bead, the multiple composite layers contain at least two material layers with different elastic moduli, and the elastic modulus of each material layer is gradiently distributed along the radial direction of the cross-section of the bead; the laying direction of each material layer is parallel to the bottom side of the hexagonal cross-section, forming a parallel composite layered structure. The present application gradiently lays and arranges multiple materials with different elastic moduli along the radial direction of the cross-section of the bead, actively adjusts the stress proportion of each load-bearing layer, promotes the balanced distribution of the hoop tension in the full cross-section range, and thus improves the fatigue resistance quality and service life while maintaining the overall load-bearing capacity of the bead.

The utility model provides a tire tread structure and a tire with the same. The tire tread structure comprises a plurality of longitudinal grooves, all the longitudinal grooves extend in the circumferential direction of a tire, and the longitudinal grooves are formed in the width direction of the tire at intervals so that a tread can be divided into two tire shoulder pattern parts and a tire crown pattern part located between the two tire shoulder pattern parts; the width W1 of the tire crown pattern part and the width W2 of the tire shoulder pattern part meet the following condition: 0.95 W1 < = W2 < = 0.99 W1; wherein the contact part of the tire and the driving surface has the width T, and the depth H and the width T of the longitudinal groove meet the condition that H is larger than or equal to 0.065 T and smaller than or equal to 0.069 T. The tire tread structure of the electric vehicle effectively solves the problem that the driving mileage of the electric vehicle is reduced due to the tire tread structure of the electric vehicle tire in the prior art.

Provided is a pneumatic tire that includes a belt reinforcing layer formed of an organic fiber cord and allows providing improved durability of the tire and weight reduction and a reduction in rolling resistance of the tire in a compatible manner. A belt layer (7) disposed on an outer circumferential side of a carcass layer in a tread portion (1) is made of a monofilament wire having a wire diameter of 0.30 mm or more and 0.45 mm or less. A belt reinforcing layer (8) disposed on an outer circumferential side of the belt layer (7) is made of a belt reinforcing cord made of a polyethylene terephthalate fiber and having an intermediate elongation under 2.0 cN / dtex load of from 2.0% to 4.0%. Circumferential portions of a strip (S) in which belt reinforcing cords (8c) are arranged are disposed at intervals in a tire width direction.

The utility model discloses a cross-country tire with a pangolin-shaped pattern structure, and relates to the technical field of cross-country automobile tires, the tire comprises a middle pattern block and a shoulder pattern block, a tire tread structure is divided into the middle pattern block and the shoulder pattern block, the middle pattern block is composed of two groups of first pattern blocks and two groups of second pattern blocks, and the shoulder pattern block is composed of two groups of first pattern blocks and two groups of second pattern blocks. The shoulder pattern blocks are composed of two long pattern blocks and two short pattern blocks which are different in length, the long pattern blocks and the short pattern blocks are alternately arranged in the circumferential direction of the tire, the long pattern blocks correspond to the second pattern blocks, the short pattern blocks correspond to the first pattern blocks, the phenomenon that the pattern blocks are torn and collapsed is reduced, the performance is improved, noise and rolling resistance are reduced, and the service life of the tire is prolonged. And the oil consumption is reduced.

The utility model relates to a kind of wheel type public rail dual-purpose chassis and public rail dual-purpose vehicle.Wheel type public rail dual-purpose vehicle includes frame, four steel wheel assemblies, two steel wheel frames, four rubber wheel frames and four rubber wheel assemblies, when using on track, steel wheel is contacted with steel rail, four rubber wheel assemblies are respectively one-to-one correspondingly pressed on four steel wheels, steel wheel can roll on steel rail under the rotating action of rubber wheel assembly, to realize the walking of public rail dual-purpose vehicle on track, so rubber wheel assembly will not be directly contacted with steel rail, avoid the emergence of the security problems such as easy derailment in running process, easy to skid under rain and snow weather, thereby affecting vehicle traction and braking, and rubber wheel is directly contacted with steel rail, because the rolling resistance of steel wheel is extremely low, steel wheel has inherent directivity, steel wheel has strong carrying capacity, steel wheel has high running stability when walking on track, so public rail dual-purpose vehicle has high use safety, and also has strong carrying capacity.

The application discloses a preparation method of modified white carbon black, modified white carbon black, and prepared masterbatch and vulcanized rubber. The preparation method of the modified white carbon black comprises the following steps: uniformly mixing silane coupling agent, sorbitan fatty acid ester surfactant, organic solvent and white carbon black to obtain the modified white carbon black. The application uses specific surfactant sorbitan fatty acid ester and silane coupling agent, modifies the white carbon black organic solvent dispersion liquid in a high-speed dispersion machine, and prepares the masterbatch filled with the white carbon black by liquid-phase compounding technology of the rubber solution, so as to prepare the rubber vulcanized rubber from the masterbatch. Compared with the traditional dry mixing technology or the wet mixing technology using the coupling agent alone, the dispersion of the white carbon black in the rubber matrix is better, the dynamic performance, heat generation and wear resistance of the rubber compound are improved, and the prepared vulcanized rubber can be used for preparing the tread rubber, so that the rolling resistance and heat generation of the tire are reduced.