High Load-Bearing Tire Construction

Tyres for vehicles with improved grip, wear resistance, and low weight. The tyres contain a rubber matrix with functionalized carbon nanoparticles like graphene and carbon nanotubes. The functionalization improves dispersion of the carbon nanoparticles in the rubber. This provides better grip, structural and chemical properties, and abrasion resistance compared to unfunctionalized carbon nanoparticles. The functionalization involves treating the carbon nanoparticles with chemicals like nitric acid to modify their surface.

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A radial tire for heavy-duty vehicles like dump trucks that improves load capacity and reduces pressure requirements compared to standard tires. The tire has a unique carcass reinforcement structure with two layers, one inside the other, instead of the usual single layer. The inner layer wraps around the bead wires and extends from bead to bead. The outer layer is outside the inner layer in the crown region. The distance between the layers is controlled to balance bending stresses. The inner layer has smaller diameter steel cords compared to standard tires for flexibility. This allows higher load or lower pressure compared to single layer tires.

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Non-pneumatic tire with a unique looped spoke design that allows the tire to run without inflation. The tire has an inner ring and outer ring coaxially arranged. Looped spokes extend between the rings. Each loop has an opening visible from one side. The loops directly contact both rings. This looped spoke structure provides support without air. Fillets between the rings further reinforce the tire. The loops have reinforced rubber inside and contact each other. The spoke design allows the tire to be run flat without air pressure.

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Polydiene rubbers with improved properties for tire applications, made by polymerizing diene monomers with functionalized comonomers containing alkoxy silyl groups. The functionalized comonomers have repeating units derived from the functionalizing comonomer. The functionalized rubber polymers have better interactions with fillers and improved tire properties compared to non-functionalized diene polymers.

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Rubber composition for pneumatic tires with improved durability without sacrificing elongation. The composition contains a diene-based rubber, carbon black, and phosphoric acid-modified cellulose nanofiber. Adding the modified cellulose nanofiber to the rubber composition enhances rubber strength without reducing elongation compared to using just carbon black. This provides better tire durability without compromising tire flexibility.

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Rubber composition for pneumatic tires that improves durability without sacrificing elongation. The composition contains a diene-based rubber, modified diene-based rubber, carbon black, and phosphoric acid-modified cellulose nanofiber. The modified diene-based rubber improves rubber strength, while the nanofiber further enhances strength. The composition allows reducing filler like silica to improve elongation. The composition can be used in vulcanized rubber parts of tires.

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A tire assembly using shape memory alloys (SMAs) combined with polymers to create structures with combined properties of elasticity and strength. The tire assembly replaces the inner tube in a pneumatic tire with a toroidal SMA structure encapsulated in polymer. The SMA structure absorbs load like a spring and prevents punctures. The polymer encloses and bonds the SMA to the tread.

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Ply bulge failure in Truck and Bus Radial (TBR) tyres, predominantly observed the shoulder region, is a critical issue impacting tyre performance safety. This study investigates root cause of such failures through comprehensive analysis 13 field-return tyres varying patterns sizes. A multi-step methodology, including visual inspection, X-ray analysis, shearography, microscopy, FTIR, adhesion testing, was employed to characterize mechanism. Visual inspection used identify external factors as punctures, overloading, or bead damage, while confirmed absence structural defects, cord spacing irregularities belt offset, indicating that intrinsic material interactions were primary drivers failure. Shearography pinpointed incipient separation areas, which further examined microscopically. Microscopic revealed debonding mode at carcass ply-rubber interface crack initiation mode, followed by propagation along surfaces then transferring adjacent cords. To distinguish between rubber degradation adhesive layer aging, forensic combining FTIR 90 peel test (adhesion test) conducted. compounds ... Read More

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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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Tire design with multiple body plies and stabilizer ply inserts to improve durability and reduce weight compared to conventional tire construction. The tire has three body plies wrapping around the beads with decreasing widths. The innermost ply has the widest turn-up, the middle ply has a narrower turn-up inside the wider one, and the outermost ply has a wider turn-up inside the narrower one. Stabilizer inserts are placed between the body plies and beads to prevent overlaps. This configuration provides stability and prevents ply overlap without needing excessively wide outer plies. The inserts also reduce weight compared to overlapping plies.

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Modified conjugated diene-based polymer for rubber compositions with optimized properties like modulus and tensile strength. The polymer has specific viscosity, molecular weight, and molecular weight distribution ranges. It is prepared by controlled polymerization conditions. The polymerization step involves using an organometallic compound and stopping at low conversion. The modified polymer is then reacted with a modifier. This provides a rubber composition with improved properties like modulus and tensile strength compared to unmodified diene polymers.

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Upgrading micronized rubber powder (MRP) for large-scale reuse in tires by chemically activating the powder to improve performance. The activation involves treating the powder with silane during grinding to prevent sticking and using silica as a dusting agent. This functionalizes the powder surface to enhance vulcanization and dispersion in rubber compounds. The activation step involves contacting the powder with silane, silica, peroxides, or other activators. This allows using lower amounts of MRP in tire formulations compared to unactivated powder, which improves properties like tear strength, abrasion resistance, and dynamic performance.

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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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Silica-filled rubber compound for tires with high stiffness and reduced rolling resistance. The compound contains a specific additive with a dipole moment over 2 Debye, polar groups at one end of a hydrophobic carbon chain, and crosslinks only at the other end. This additive enhances silica dispersion and stiffness without increasing hysteresis compared to traditional plasticizers. The compound has a balance of stiffness and rolling resistance exceeding 1.15 in E'/TanD ratio.

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Non-pneumatic tire design that allows the tire to withstand high impact events without failure. The tire has a support structure with spokes that are designed to contact each other during high impact events. The spokes have curved foot portions that adapt to the curvature of the lower ring when bonded. This allows the spokes to flex and contact each other when the tire encounters a pothole or obstacle, distributing the force and preventing spoke failures. The spokes also have curved surfaces that match the ring scallops, allowing rotation adjustment without pre-stress.

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<div class="section abstract"><div class="htmlview paragraph">This paper investigates the development of a Finite Element model Mixed Service Drive truck tire sized 315/80R22.5 equipped with thermal simulating properties. The physical experiments were performed at high-speed track in Hllered, Sweden for combination travelling constant speed 80 km/h. For this investigation, Gross Combination Weight is approximately 42 metric tons. In Analysis environment, ESI Virtual Performance Solutions, designed hyperelastic Ogden solid rubber definitions. material definition used application as it more suitable to perform and wear analysis within environment. simulated increase two different temperature rates. simulates build-up over time select tires on High-Capacity transport combination, particularly driven tractor. element models can be computationally expensive simulate, especially long period time. Experimentally, belonging tractor increased shorter frame, which efficient developing FEA simulations.</div></div>

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A high wear-resistant light truck tire with two metal braided structures inside the tire body. The tire has symmetrical stripes and patterns on the outer sidewall. The metal braids are ring-shaped and evenly placed inside the tire. They provide reinforcement to resist wear in high load and rough road conditions.

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A passenger car tire with higher load capacity than standard tires of the same size without sacrificing space or comfort. The tire has a carcass reinforcement that extends further inward than usual relative to the tire's size. This allows the tire to withstand higher loads than a standard tire of the same size without increasing inflation pressure. The tire also has a sidewall height and carcass construction that enable it to maintain similar space and performance characteristics compared to the standard tire.

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Tire design that allows a passenger car tire to carry higher loads without needing higher inflation pressures. The tire has a load index greater than that of a standard tire of the same size and construction. This provides increased load capacity without sacrificing compactness or comfort. The tire maintains the same dimensions as a standard tire of the same size and aspect ratio. The higher load capacity allows using larger batteries for electric vehicles without needing larger tires or higher pressures. The tire can have a distinctive marking like "HL" or "XL+" to indicate the higher load capacity.

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