Techniques to Improve Tire Tread Wear Resistance

ABSTRACT Significant advancements in developing highperformance, sustainable tyre tread compounds have been achieved through the strategic integration of modified silica into carbon black (CB)/thermally exfoliated graphite hybrid filler systems. While benefits fillers such as CB, graphite, and are recognized, limited understanding their interaction mechanisms with polymer chains has hindered widespread adoption. This study investigates mechanical, thermal, dynamic mechanical properties an ecofriendly, green compound, focusing on both binary (CB/silica) ternary (CB, graphite/modified silica) The key aspect this research is utilization prepared by latex imprinting technique along epoxidized natural rubber (ENR) a compatibilizer to enhance between NR matrix. partial replacement CB thermally novel lateximprinted enhanced surface area provides excellent properties, low rolling resistance, improved wet grip, reduced heat buildup. porosity silica, coupled system, play crucial role reducing hysteresis, resulting resistance (0.0376), grip (0.0796), very buildup (13C). attribu... Read More

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Heavy truck tire tread design that improves wear life without compromising wet braking performance. The tread has a unique groove configuration with hidden, open, and partially hidden grooves. This configuration provides more contact surface area for wear resistance without increasing the contact pressure that can harm wet braking. It also has lateral sipes that extend across multiple grooves to prevent irregular wear. The hidden grooves have undersurface channels that open to the contact surface as the tread wears. This provides additional contact surface without increasing the total depth. The open grooves have bottom surfaces that become visible as the tread wears. The partially hidden grooves have bottom surfaces that partially become visible. The sipes have a height greater than half the tread depth. The hidden grooves, open grooves, and partially hidden grooves along with the sipes provide a more complex contact pattern as the tread wears, preventing irregular

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A tire design with improved wet steering stability, vehicle external noise resistance, and wear resistance in a balanced manner. The tire has four circumferential main grooves, defining lands, chamfered portions, and inclined grooves. At least one circumferential narrow groove is added in the lands. This configuration provides balanced wet steering stability, noise reduction, and wear resistance. The narrow grooves in the lands improve wet grip, the chamfered portions reduce edge effects, the inclined grooves further reduce noise, and the overall design maintains wear resistance.

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Modified conjugated diene-based polymer with improved filler affinity and processability for rubber applications. The polymer has a unique structure with a first chain of conjugated diene repeating units and a second chain derived from a macromonomer containing a compound with a specific structure. The first and second chains are coupled by a derived unit from an alkoxysilane-based modifier. The modifier contains an amine group that improves filler interaction. The polymer preparation involves reacting the modified first chain with the macromonomer to create the graft structure. The polymer has high N content from the amine groups and improved filler affinity.

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Rubber composition for tire treads with improved wear resistance, suitable for heavy-duty truck tires. The composition uses a specific ratio of natural rubber to styrene-butadiene rubber (70:30 or more), along with high surface area silica and carbon black fillers. Process aids like resins, waxes, and liquid plasticizers are used. The cure package contains ultra-accelerators like BDBZTH. This composition provides better wear performance in tires compared to conventional formulations.

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Tire design to balance wear life and cut resistance in construction and mining tires. The tire has narrow grooves in the tread to increase rubber volume and wear life. However, narrow grooves can lead to cut separation between the tread and belt due to road cuts. To address this, the tire has a unique groove configuration in the center of the tread. The center groove has a tapered section that gradually widens towards the base, followed by a wide straight section. This design provides initial rubber volume for wear resistance, but in the middle of wear when cuts are more likely, the wide straight section appears to prevent separation between the tread and belt.

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ABSTRACT As the global transportation industry evolves, there is a rapid surge in market demand for engineering tires. Nevertheless, working environment becoming increasingly complex and challenging, tires are now subject to more stringent performance requirements, including reduced rolling resistance, decreased heat generation, enhanced wear cut resistance. In this work, type of Eucommia ulmoides gum (EUG)/natural rubber (NR)/styrenebutadiene (SBR) nanocomposite was effectively prepared with silica as nanofiller. Subsequently, epoxidized natural (ENR) introduced into EUG/NR/SBR nanocomposites address issue agglomeration within enhance comprehensive nanocomposites. The relationship between ENR content further investigated. results demonstrate that reduces surface activity via hydrogen bond effect grafting reaction, thus enhancing dispersion. Moreover, at an 9 phr, dynamic temperature rise 25.2C volume abrasion 0.135 cm 3 1.61 km 1 , representing 12.2% reduction 21.1% decrease compared without ENR. This work develops innovative approach dispersion fillers EUGbased multifu... Read More

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Rubber composition for tires with improved wear resistance, wet performance, rolling resistance, and temperature dependency of rolling resistance. The composition contains a diene rubber with at least 55% of a specific styrene-butadiene rubber having a Tg of -50°C or lower. This rubber enhances silica dispersion, wear, and low rolling resistance. Additionally, the composition has a white filler of 30-100 parts, thermoplastic resin, and a silane coupling agent blended with the filler at 3-20 mass%. This balance improves dispersibility, reduces rolling resistance temperature dependency, and prevents gelling.

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Adducts between pyrrole derivatives containing sulfur atoms and sp2 hybridized carbon allotropes like carbon black, graphene, and nanotubes. The adducts improve elastomer reinforcement by enhancing compatibility between the filler and matrix. They can be obtained by reacting the pyrrole derivatives with the carbon allotropes. The adducts have applications in crosslinkable elastomer compositions for tire compounds. The process involves mixing the carbon allotrope and pyrrole derivative at room temperature. The adducts formed provide reduced Payne effect and improved reinforcement at high deformations compared to unreacted filler.

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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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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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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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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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