Materials for Better Heat Dissipation in Tires at High Speed
41 patents in this list
Updated:
At high speeds, tires face the challenge of dissipating heat effectively to maintain performance and safety. The friction between the tire and road generates significant heat, which, if not managed, can lead to tire degradation or failure. This issue is critical for professionals in automotive engineering, as efficient heat management is essential for enhancing tire longevity and vehicle safety.
The core challenge lies in finding materials that can conduct heat away quickly while maintaining the tire's structural integrity. Traditional rubber compounds often struggle with this balance, leading to heat buildup and increased wear. Engineers and researchers are tasked with developing materials that not only improve thermal conductivity but also withstand the mechanical stresses of high-speed travel.
On this page, you will find insights into advanced materials and compositions designed to enhance heat dissipation in tires. These include rubber compositions with high thermal conductivity fillers, graphene-resin composites for reinforcement, and innovative coatings that improve heat transfer. These solutions aim to improve tire performance and reliability, providing safer and more efficient options for high-speed applications.
1. Rubber Composition with High Thermal Conductivity Carbon-Based Filler and Reinforcing Filler
CHINA PETROLEUM & CHEM CORP, CHINA PETROLEUM & CHEMICAL CORP, SINOPEC BEIJING CHEMICAL RES INSTITUTE CO LTD, 2024
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.
2. Solid Tires Comprising Natural Rubber and Fluororubber with Aluminum Nitride and Ellagic Acid Fillers
RONGCHENG RONGYING RUBBER PRODUCTS CO LTD, 2023
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.
3. Graphene-Resin Composite Structure for Tire Carcass Reinforcement
Nexen Tire Corporation, 2022
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.
4. Tire Sidewall Rubber Composition with Thermal Cracking High Heat Transfer Carbon Black
SHANDONG LINGLONG TYRE CO LTD, 2021
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.
5. Rubber Composition Incorporating Ultra-Light Porous Silicon for Enhanced Thermal Conductivity in Tire Shoulder Wedges
CHENG SHIN RUBBER CHINA CO LTD, CHENG SHIN RUBBER CO LTD, 2021
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.
6. All-Steel Radial Tire Tread Rubber Material with Aluminum Oxide for Enhanced Thermal Conductivity
GUIZHOU TYRE CO LTD, 2021
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.
7. Semisteel Car Tire with Heat Dissipating Layers and Reinforcing Structures
QINGDAO AONUO TYRE CO LTD, 2020
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.
8. Low Viscosity, Low Elastic Modulus, High Thermal Conductivity Tire Coating
Bridgestone Corporation, BRIDGESTONE CORP, 2020
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.
9. Radial Tire Shoulder Rubber Composition with Specific Natural and Butadiene Rubber Ratios and Pretreated Aramid Fiber
DONGYING FANGXING RUBBER CO LTD, 2020
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.
10. Solid Tire with Carbon Fiber Reinforcement and Multi-Layered Heat-Conductive Coating
ALPHA TECH SUZHOU CO LTD, ALPHA TECHNOLOGY CO LTD, 2020
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.
11. Silane-Modified Graphene Oxide-Reinforced Rubber Composite
DUJIANGYAN YUNMINONGQING TECH CO LTD, DUJIANGYAN YUNMINONGQING TECHNOLOGY CO LTD, 2019
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.
12. Tire with Corrugated Thermally Conductive Fiber Member in Sidewall and Bead Area
Bridgestone Corporation, 2019
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.
13. Solid Tires Comprising Lanthanide Rare Earth Anti-Aging Agents, Aramid Fiber Heat Dissipation Channels, and Silica Filler
Yong Rubber Co., Ltd., 2019
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.
14. Solid Tires with White Carbon Black Tread and Aramid Fiber-Silica Inner Liner
Eternal Rubber Co., Ltd., 2019
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.
15. Pneumatic Tire with High Thermal Conductivity Outer Apex Rubber Composition
SUMITOMO RUBBER INDUSTRIES LTD, 2019
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.
16. Side-Reinforced Run-Flat Tire with Fibrous and Particulate Filler-Enhanced Sidewall Rubber for Controlled Thermal Conductivity
BRIDGESTONE CORP, 2012
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.
17. Carload Tire Shoulder Rubber Composite with Enhanced Heat Conductive Rubber, Carbon Black Filler, Aromatic Oil, and Scorch Retarder Additive
BEIJING UNIVERSITY OF CHEMICAL TECHNOLOGY, UNIV BEIJING CHEMICAL, 2011
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.
18. Pneumatic Tire with Corrugated Heat Dissipation Layer and Protective Outer Layer
2011
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.
19. Rubber Composition with Zinc Oxide and Aluminum Nitride for Enhanced Thermal Conductivity and Rigidity in Run-Flat Tires
SUMITOMO RUBBER IND, SUMITOMO RUBBER IND LTD, 2011
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.
20. Silica and High Thermal Conductivity Carbon Fiber Rubber Composition with Anisotropic Rigidity for Clinch Apex of Pneumatic Tires
SUMITOMO RUBBER IND, SUMITOMO RUBBER IND LTD, 2011
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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