Improve Wear Resistance of Tires

ABSTRACT A facile strategy to improve silica dispersion and enhance the dynamic performance of silicafilled green tire treads is herein proposed. In this study, sulfurized (Z)sorbitan mono9octadecenoate (SS80) was synthesized characterized using Fourier transform infrared (FTIR) spectroscopy, gel permeation chromatography (GPC), liquid chromatographymass spectrometry (LCMS), elemental analysis. It confirmed that (S80) can react with sulfur form larger molecular weight SS80 disulfur or polysulfur bonds. subsequently used in conjunction bis (triethoxysilylpropyl)disulfide (TESPD) modify prepare silica/SSBR composites. Particle size analysis transmission electron microscopy (TEM) revealed incorporating reduced particle modified enhanced its composite. Dynamic mechanical analyzer (DMA), rubber process (RPA), tests demonstrated composites exhibit loss, modulus, improved wear resistance, maintained propertiesprimarily due dispersion. Overall, study provides a universal costeffective for enhancing dispersibility hydrophobic matrix.

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A block copolymer for improving dispersion of hydrophilic fillers like silica in hydrophobic rubber compounds, which reduces viscosity during mixing and improves properties of the final rubber. The block copolymer has a first block derived from an alkene like styrene or butadiene and a second block derived from an epoxide like ethylene oxide or propylene oxide. The copolymer structure assists wetting of silica surfaces or passivates silica via condensation reactions. It can be made by polymerizing the alkene followed by epoxidation. The copolymer helps disperse silica fillers in rubber without high temperatures or harsh additives, leading to lower compound hysteresis for better rolling resistance.

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Rubber composition for tires with improved wear resistance, breaking strength, and processability. The composition contains a rubber component and carbon black with specific properties. The carbon black has an oil absorption number of 105-122 mL/100g, CTAB specific surface area of 130-153 m2/g, D50/Dst ratio of 0.75-0.88, oil absorption difference of 11-33 mL/100g, and hydrogen evolution of 2300-3500 ppm. This carbon black provides wear resistance and breaking strength while avoiding excessive structure and agglomeration for better processability compared to conventional carbon blacks.

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Tire tread rubber composition that improves wet braking, wear, and snow braking performance while maintaining fuel efficiency. The composition contains specific amounts of liquid polybutadiene, aluminum hydroxide, and vulcanizing agent relative to the total rubber. Using these optimized levels provides a tire compound that dramatically enhances wet grip, wear resistance, and snow traction compared to conventional rubber formulations.

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Passenger car tires (PCTs) usually consist of a silica/silane-filled Butadiene Rubber (BR) or Solution Styrene (SSBR) tread compound. This system is widely used due to improvements observed in rolling resistance (RR) as well wet grip compared carbon black-filled compounds. However, the covalent bond that couples silica via silane with rubber increases challenge recycling these products. Furthermore, this strong unable reform once it broken, leading deterioration tire properties. work aims improve negative aspects silica-filled compounds by developing novel coupling based on non-covalent interactions, which exhibit reversible feature. The formation new was accomplished reacting and phenolic resin order obtain simultaneous interactions hydrogen bonding. reaction performed using two different silanes (amino epoxy silane) an alkyl phenolformaldehyde resin. implementation resulted improved crosslink density, better mechanical performance, superior fatigue behavior, similar indicator.

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Tire design with improved stability and wear resistance. The tire has a tread layout with alternating narrow laterally elongated blocks (first crown blocks) between wider longitudinally elongated blocks (second crown blocks). This configuration reduces sideslip while enhancing wear resistance compared to a continuous narrow block tread. The narrow first crown blocks are interspersed between wider second crown blocks that overlap in the circumferential direction. The first crown blocks have shorter width than length, while the second crown blocks have longer width than length.

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A method to make uniformly cured high-modulus graphene oxide/natural rubber tires that have improved wear resistance and tear strength. The method involves optimizing the vulcanization process for thick rubber tires using specific ingredient ratios. It balances internal and external rubber cure to prevent over or under vulcanization. The ratios are: 0.5-5% graphene oxide, 40-120% carbon black, 1-20% activator, 1-20% softener, 1-10% anti-aging agent, 1-10% antioxidant, 1-20% vulcanization accelerator, 1-20% vulcanizing agent, and 1-20% interface modifying agent.

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A tire with a small diameter that provides wear resistance and noise reduction. The tire has specific dimensions and tread groove distribution to balance wear and noise performance when used on small diameter vehicles like electric cars. The tire outer diameter is 200-660 mm and total width is 100-400 mm. The tread has a groove area ratio of 0.008-0.150% of the tire diameter. The inner region from 48% of the width inward has a higher groove area than the outer region. This tread design reduces noise and improves wear on small diameter tires.

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Heavy duty pneumatic tire with improved wet traction and wear resistance. The tire has a zigzagging crown circumferential groove and a zigzagging shoulder circumferential groove. Adjacent crown lateral grooves connect the crowns to shoulders. The crown blocks have smaller sub-grooves with fewer, shorter transverse grooves compared to the wider lateral grooves. This configuration provides enhanced wet traction from the zigzagging main grooves, while the smaller sub-grooves prevent excessive wear.

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Recycled carbon black with improved properties for rubber products by modifying the surface of recycled carbon black obtained from pyrolyzing waste tires. The modification involves continuously introducing the recycled carbon black into a main burner flame and passing it through the flame. This removes rubber residuals adhering to the carbon black surface. The burner flame conditions are optimized to maintain low oxygen levels during combustion. The modified carbon black has lower rubber impurities and higher bonding with rubber components compared to unmodified recycled carbon black.

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Rubber composition for tires that provides improved wet grip, wear resistance, and low heat degradation compared to conventional tire rubbers. The composition contains specific amounts of silica, surface-treated aluminum hydroxide, styrene-butadiene copolymer, liquid SBR, tackifier resin, and optionally a silane coupling agent. The silica has a nitrogen adsorption specific surface area (N2SA) of 100-300 m2/g and a N2SA/CTAB specific surface area (SSA) of 1.10 or less. The surface-treated aluminum hydroxide improves wet grip. The styrene-butadiene copolymer with high styrene content provides wear resistance. The liquid SBR with high vinyl content and unmodified tackifier resin enhance wet grip. The composition also contains a sil

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Pelletizable fiber blends containing short fibers and a binder that can be directly added to polymers or rubbers without melting the pellets to disperse the fibers. The pelletized fiber blends improve fiber dispersion during polymer processing, reduce fiber clumping, and provide better interfacial bonding between fibers and the matrix. The blends have less than 1% wax to prevent sticking during pelletization. The pellets can be used to prepare composites with improved physical properties like tensile modulus, elongation, tear strength, and abrasion resistance compared to unpelletized fiber blends.

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Rubber composition for tire treads that provides improved wet performance while maintaining snow and wear characteristics. The composition contains specific amounts of polybutadiene, styrene-butadiene rubber, silica, organosilane coupling agent, processing oil, resins, and curing agents. The rubber formulation balances wet traction, snow traction, and wear resistance through the selected rubber components and curing package.

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Additive composition for improving properties of silica-filled rubber compounds in tires, such as fuel economy, traction, and wear resistance. The composition comprises a reaction product of fatty acid and polyamine. It is added to silica-filled rubber compounds, like tire treads, at low parts per hundred (phr) levels. The additive enhances silica dispersion and reduces payne effect, without affecting key rubber properties like viscosity, scorch, hardness, tensile strength, elongation, abrasion, and modulus. This enables improved tire performance, including lower rolling resistance, enhanced winter/dry traction, and better dry handling, without compromising other properties.

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Silica-filled natural rubber compositions for tire treads that provide improved properties like tensile strength, tear resistance, wear resistance, and impact resistance compared to traditional natural rubber treads. The compositions contain natural rubber, functionalized synthetic polyisoprene, and a silica filler. The functionalized synthetic polyisoprene has silica-interactive functional groups that impart polymer-filler interaction to the natural rubber domains in the composition, resulting in enhanced properties from both the natural rubber and the functionalized synthetic polyisoprene.

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Polysaccharide-elastomer masterbatch for making reinforced rubber compositions with reduced water content. The masterbatch is made by mixing a polysaccharide dispersion with an elastomer latex and then coagulating and drying the mixture. This avoids adding water during masterbatch production, allowing lower water content in the final rubber compound. The polysaccharide provides reinforcement and reduces rolling resistance compared to carbon black. The masterbatch can be used in applications like tires, belts, footwear, coatings, etc.

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Rubber composition for high mileage truck tires with improved wear resistance and aging properties. The composition contains a specific combination of curing accelerators - sulfenamide, dithiocarbamate, and thiazole/thiuram polysulfide accelerators - along with natural rubber, polydiene rubber, carbon black, and a curative system. This accelerator blend provides optimal tire wear and aging without significant loss in other properties like processing.

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<div class="section abstract"><div class="htmlview paragraph">This paper focuses on the development of a tire thermal model for automotive applications, addressing challenge accurately predicting temperatures different layers tire, under various driving conditions. The primary goal is to enhance understanding temperature behavior improve safety, performance, and durability. research utilizes physics 1-D from which system differential equations, describing interaction between derived. Furthermore, state observer used estimate temperatures, using Tire Pressure Monitoring System (TPMS) measurements correct predictions. In particular, TPMS are assumed be sufficient exclude additional contributions coming rims disk brakes, simplifies model, making it more suitable real-time applications. A calibration procedure defined deriving parameters, based data collected in maneuvers. For validation, predicted tread surface have been compared with infrared sensors measurements.</div><div paragraph">The final demonstrates how can differ across layers. use non-linear crucial... Read More

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Rubber composition for tire treads that balances low rolling resistance and good wear resistance in heavy-load tires. The composition contains diene rubber with at least 50% natural or isoprene rubber, carbon black with a specific surface area of 80-150 m2/g, and silica with a specific surface area of 120-250 m2/g. The silica content relative to carbon black (silica/carbon black ratio) should be greater than 1.

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Rubber composition for tires with improved durability, heat resistance, and abrasion resistance when traveling on rough roads, especially for heavy-duty tires. The composition contains predominantly isoprene rubber (60% or more) along with a small amount (0.1-5.0 parts per 100 parts rubber) of a specific compound represented by formula (1). The composition also has a balance of 40-80 parts carbon black and 30% or less silica based on the total filler load. The low filler density, high isoprene rubber content, and specific compound improves durability and heat resistance without sacrificing abrasion resistance.

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