Materials for Better Heat Dissipation in Tires at High Speed

Rubber composition for vulcanized products like tires that has improved thermal conductivity compared to conventional rubber compounds. The composition contains a high thermal conductivity carbon-based filler like graphene, along with reinforcing filler like carbon black. The graphene filler improves heat conduction while the carbon black provides reinforcement. The composition also has optimized amounts of vulcanizing agents, halogen-containing rubber, vulcanizing activators, and plasticizers.

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Solid tires with improved heat dissipation and longer lifespan through the use of specific rubber compounds and fillers. The tire has a liner and tread made by combining natural rubber, fluororubber, fillers like aluminum nitride, epoxy resin, glass fiber, and ellagic acid, vulcanizing agent, and accelerator. The fillers improve heat conduction, allowing the tire to quickly dissipate heat generated during high load applications. This prevents excessive tire temperatures that degrade the rubber over time.

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Replacing the traditional fiber cords in tire carcasses with a composite material made of a graphene layer sandwiched between two thin resin layers. The composite improves heat dissipation compared to the original fiber cords while maintaining the tire's strength and flexibility. The composite has specific thickness constraints for the resin layers and graphene layer to balance heat conduction, impact protection, and weight reduction. The composite structure is integrated into the tire carcass to improve heat dissipation and reduce heating issues compared to conventional tires.

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A high-heat-transfer tire sidewall rubber composition for semi-steel radial tires that improves heat dissipation and extends tire life. It uses thermal cracking high heat transfer carbon black to partially replace conventional carbon black. This carbon black has high iodine absorption (≥90 g/kg) and specific surface area (≥80 m2/kg) to enhance heat conduction. By leveraging the intrinsic heat transfer properties of this carbon black, it improves sidewall heat dissipation without degrading rubber properties. This accelerates heat dissipation, shortens thermal aging, and prolongs tire life.

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Rubber composition for shoulder wedges and tires that reduces heat buildup in the tire shoulder area to prevent premature aging and failure. The composition contains natural rubber, carbon black, ultra-light porous silicon, aromatic oil, antioxidant, zinc oxide, stearic acid, accelerator, and sulfur. The ultra-light porous silicon increases thermal conductivity to dissipate heat better. The composition avoids tackifying resins and other heat-generating additives.

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Ultra-high-thermal-conductivity all-steel radial giant tire tread rubber material to improve tire performance and prevent abnormal damage. The rubber formulation contains aluminum oxide as a heat-conducting agent in addition to conventional ingredients like natural rubber, carbon black, zinc oxide, stearic acid, microcrystalline wax, anti-aging agent, softener, aromatic oil, sulfur, accelerator, and scorch retarder. The aluminum oxide increases thermal conductivity without significantly impacting other properties.

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High heat dissipating semisteel car tire with improved heat dissipation, durability, and wear resistance compared to conventional semisteel tires. The tire has multiple features for heat dissipation: a matrix bottom with heat dissipating layers, child hat belted layers with heat dissipating layers, and sidewall heat dissipating grooves. These layers contain materials like silicon rubber and heat conducting gels that absorb and conduct heat. Reinforcing strips and blocks prevent wear and tear while allowing heat transfer. The tire also has features like tread grooves, pattern blocks, and restrained belt layers that improve performance and durability.

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Coating for tires with high thermal conductivity to improve heat aging resistance without modifying the tire compound. The coating has a low viscosity (0.5-10000 cP) and low elastic modulus (≤8 MPa) to allow easy application and adhesion to the tire surface. The coating has a thermal conductivity >0.2 W/mK to prevent localized heating during tire use.

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Radial tire shoulder rubber composition that reduces heat generation and improves durability compared to conventional tire shoulder rubber. The composition contains specific amounts of natural rubber, butadiene rubber, zinc oxide, stearic acid, graphite, carbon black, white carbon black, silane coupling agent, pretreated aramid short fiber, tackifying resin, adhesive, antioxidant, sulfur, accelerator, antiscorching agent, anti-aging agent, microcrystalline wax, and anti-reversion agent. The composition aims to reduce heat buildup in tire shoulders, prevent cavity formation, and improve tear resistance and wear resistance compared to conventional tire shoulder rubber.

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Solid heat dissipation tire with coated surface paint layer to improve heat dissipation for solid tires that can't realize high-speed running due to poor heat dispersion. The tire has carbon fiber yarns penetrating through the elastic filling and winding around the cavity. The surface is coated with a stack of paint layers: aluminum powder, graphene heat-conducting, and fluorocarbon. The aluminum powder layer dissipates heat, graphene conducts it, and fluorocarbon protects. Inside, the tire has sunken louvres to further aid heat dissipation.

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A composite rubber material for tires with improved properties like durability, thermal conductivity, and oil resistance. The composite contains graphene oxide (GO) modified with silane coupling agent. The GO is dispersed in the rubber matrix to form a graphene-reinforced composite. The silane modification helps the GO disperse better in the rubber and improves the composite properties compared to unmodified GO. The modified GO also has better compatibility with the rubber compared to unmodified GO due to the silane groups. The resulting graphene-reinforced rubber composite has enhanced mechanical, thermal, and oil resistance properties for tire applications.

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Tire design to improve durability by reducing heat buildup without degrading rolling resistance. The tire has a thermally conductive member inside the sidewall and bead area made of a fiber material with higher conductivity than rubber. This member is corrugated to provide a path for heat transfer from the inside of the tire to the outer surface. By conducting heat outward, it prevents excessive temperature rise in the sidewall and bead regions where deformation and heat generation are highest. This improves durability without adding fine particles or laminates that can deteriorate tire properties.

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High life solid tires with extended service life compared to conventional solid tires. The tires are made by using a specific rubber compound containing lanthanide rare earth anti-aging agents, aramid fibers, and silica filler. The lanthanide anti-aging agents replace traditional ones to delay rubber aging. The aramid fibers act as conductive channels to dissipate heat in the tire carcass. The silica filler improves tire durability. The compound is vulcanized to make the solid tires.

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Low-heat generation solid tires with improved temperature resistance during driving. The tires have specific rubber compositions for the tire tread and inner liner that reduce heat generation compared to conventional solid tires. The tread rubber contains white carbon black along with regular carbon black, which reduces heat buildup during friction. The inner liner rubber contains aramid fibers and silica filler, which improves thermal conductivity and dissipation of heat generated inside the tire carcass.

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Pneumatic tire with improved durability and handling stability. The tire has an outer apex made from a rubber composition with a high thermal conductivity of 0.60 W/m·K or higher. This compensates for the decreased heat transfer efficiency from the mold due to the thicker outer apex. The high thermal conductivity rubber helps optimize adhesion of the carcass during vulcanization by allowing better heat conduction from the mold. This prevents overcure of the surface and improves durability. The outer apex rubber composition can contain fillers like pitch-based carbon fiber and graphite to achieve the high thermal conductivity.

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Side-reinforced run-flat tire with improved emergency running life by optimizing the thermal conductivity of the sidewall rubber. The sidewall rubber composition contains both fibrous fillers and particulate fillers to achieve a specific range of thermal conductivity in the tire width direction (0.35 to 3.0 W/mK) and a ratio of width to circumferential conductivity (1.1 to 3.0). This allows efficient heat dissipation from the sidewalls during run-flat operation, preventing excessive temperatures and damage to the side reinforcement.

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Carload tire shoulder rubber composite that improves heat dissipation to prevent overheating and degradation of tire shoulder rubber under dynamic loading. The composite contains specific rubber, filler, oil, and additive components to enhance heat conduction. The rubber is natural and synthetic rubber with a masterbatch. The filler is carbon black. The oil is aromatic hydrocarbon oil, coal tar, or pine tar. The additive is a scorch retarder.

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Pneumatic tire design that improves heat dissipation and protects sidewall, bead, and tread areas from damage. The tire has a corrugated heat dissipation layer attached to the sidewall. An outer protective layer covers the sidewall and exposes portions of the corrugated layer. The corrugated shape prevents damage from obstacles. The exposed sections allow heat dissipation. Multiple openings in the protective layer expose more of the corrugated layer.

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Rubber composition for run-flat tires that improves durability and thermal properties compared to conventional run-flat tires. The composition contains a rubber component, zinc oxide, and aluminum nitride. This combination provides good thermal conductivity, reducing heat buildup during run-flat operation, and improves rigidity and durability of the run-flat tire. The aluminum nitride also aids in processing the rubber compound.

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Rubber composition for clinch apex of pneumatic tires that balances fuel efficiency, handling stability, and durability. The composition contains silica and carbon fibers with a thermal conductivity of 100 W/mK or higher. The carbon fiber anisotropy is controlled to have higher rigidity in the tire circumferential direction compared to radial direction. This provides a well-balanced improvement in fuel economy, handling stability, and durability compared to using silica alone or carbon fiber with lower thermal conductivity.

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