Silica Fillers in Tire Compound Development

Thermally conductive adhesive for bonding electronic components that has low viscosity, fast curing speed, low temperature curing, and high thermal conductivity. The adhesive composition contains a silicone resin, silanes, epoxy resin, and fillers like aluminum hydroxide, alumina, and silica. The silanes are organosilanes with specific end group structures. The composition can be a one-component or two-component system. It provides strong adhesion, fast curing, and high thermal conductivity for bonding electronic components at low temperatures without specialized equipment.

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Silica particle with reduced electrostatic charge for preventing static electricity buildup. The silica particle contains a quaternary ammonium salt. The particle size, pore structure, and surface charge are controlled to prevent excessive electrostatic capacitance. The particle size is in the range of 1.0-1.6 um, with a pore size of 2 nm or less accounting for 90-110% of the total pore volume before washing, and 85-200% after washing. The electrostatic capacitance ratio of particles before and after washing is 0.90-1.10. After sintering at 600°C, the pore volume is 5-20 times the pre-sintering value. The controlled particle size, pore structure, and charge prevent excessive electrostatic capacitance and static charge accumulation on the

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Fuel cell system for vehicles and other applications that switches fuel gas supply strategies at startup below freezing to prevent catalyst degradation and component freezing. The fuel cell system has two fuel gas supply methods: direct hydrogen supply and circulating hydrogen supply. The system starts with direct hydrogen supply below freezing to prevent fuel shortage and ice formation. If the fuel tank temperature is below freezing, it switches to circulating hydrogen supply to warm the fuel and prevent freezing. The switch is made when ice accretion reaches a threshold to avoid functional failure. This allows starting the fuel cell below freezing without degradation or failure.

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Anode active material for lithium-ion batteries made from recycled waste glass that contains silica and metal oxides. The material is produced by reducing waste glass at temperatures around 300°C to create silicon particles with a unique bond structure containing metal-oxygen-silicon bonds. This bonding helps prevent the silicon from expanding and delaminating during battery cycling, which is a major issue with pure silicon anodes. The recycled waste glass source also reduces costs and environmental impact compared to high-temperature silicon production methods.

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High-performance organic-inorganic composite solid-state electrolytes (OICSEs) are pivotal for advancing lithium metal batteries (SSLMBs), offering the potential enhanced safety and higher energy density compared to conventional liquid electrolytes. This study systematically explores influence of nanofiller physicochemical properties (particle size, specific surface area, energy) on electrochemical performance polyethylene oxide (PEO)-based OICSEs. By optimizing these parameters, we developed a PEO/superhydrophobic SiO2 OICSE incorporating low nanofillers with an optimized particle size 7 nm high area 300 m2 g-1. engineered demonstrated exceptional ionic conductivity (4.3 10-4 S cm-1 at 30 C), Li-ion transference number (0.5), superior stability (up 5.1 V vs Li+/Li). When integrated into Li|LiFePO4 battery, battery exhibited outstanding rate 5.0 C) remarkable cycling (93.8% capacity retention after 500 cycles C) maintained stable even 0 C. These improvements attributed transport pathways solid/solid interfacial stability. The superhydrophobic presents scalable commercially v... Read More

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Binder composition for rechargeable battery anodes that improves adhesion, coating uniformity, and performance. The binder is a cross-linked polymer obtained by grinding. It contains specific monomers (1,3 butadiene, (hydroxyethyl)methacrylate, trimethylolpropane trimethacrylate) with a particle size range of 180-450 μm. The binder also has a silica anti-caking agent. This composition provides better adhesion to the anode current collector compared to spray-dried binders. It also enables extrusion-based electrode processing for improved anode coating uniformity.

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Battery pack design with reduced components, improved energy density, and enhanced safety for applications like electric vehicles, drones, and portable electronics. The battery pack has a single enclosure that houses the battery cells directly against the inner wall without an intermediate module case. Filler material surrounds the cell sides to prevent electrical shorting and thermal runaway propagation. This simplifies the pack structure, reduces cost, and increases energy density compared to separate cell and pack housings. The filler also blocks heat transfer between cells to mitigate thermal runaway chain reactions.

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Method to increase the bulk density of low bulk density materials like fumed silica without forming agglomerates, grit, or altering absorption properties. The method involves gently mixing the low bulk density material with a liquid, like water or acid, to create a homogenous, densified material that retains its powdery form and dispersibility. The liquid is evaporated to leave behind the denser product. This avoids issues like over-densification, agglomeration, and reduced dispersion when using mechanical methods.

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Controlling the morphology of precipitated silica by using polycation-polyanion phase separation. The process involves mixing oppositely charged polymer ions with silicon sources to induce silicification. The polymer dense phase formed by phase separation provides a distinct environment for silica precipitation. This enables regulating the silica morphology by tuning the polymer concentration and ionic strength.

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Rubber compositions for vehicle tires that balance wet performance, rolling resistance, and wear resistance. The compositions contain a filler system with two different silicas. One is a surface-functionalized silica with specific surface areas of 250-310 m2/g and 230-285 m2/g. The other is an unfunctionalized silica with specific surface areas of 60-120 m2/g and 55-105 m2/g. This blend of silicas improves wet grip, rolling resistance, and wear resistance compared to similar filler systems using only one type of silica.

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Rubber mixture for tire treads with improved properties like rolling resistance, grip, and tear resistance. The mixture contains a specific type of styrene-butadiene rubber (SSBR) with a glass transition temperature between -35°C and -85°C. This rubber is combined with silica filler and a specific amount of a silane. The silane has a formula with a thioacetate or thiopropyl group (X) bonded to a silicon atom (Si) and a propyl group (R) with a siloxane (S) bond between them. The silane amount is 1-30 parts per hundred parts of rubber (phr). The mixture can be used in tire treads for vehicles to provide better balance of properties like rolling resistance, grip, and tear resistance compared to conventional tire tread compositions.

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Rubber composition for tires that provides improved rolling resistance, wet grip, and handling compared to conventional tire rubbers. The composition uses a blend of natural rubber, polybutadiene rubber, and two different solution-polymerized styrene-butadiene rubbers with specific glass transition temperatures. It also contains two silicas with different surface areas, along with coupling agents. The composition enables optimizing winter performance without sacrificing rolling resistance, by balancing silica-filler interactions and silanization. The cross-linkable composition can be used in tire treads, and the cross-linked tire has improved properties like rolling resistance, wet grip, and handling.

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Tire rubber composition for improved wet grip and fuel efficiency. It contains a specific combination of rubber components, hydrogenated resin, silica, and carbon black. The rubber components are isoprene-based and modified styrene-butadiene rubber with high styrene content (30% or more). The hydrogenated resin has a high softening point (100°C or above) and moderate molecular weight (1200-1600 g/mol). The silica loading is 50-100% of the total filler content. This composition balance provides optimal wet grip and rolling resistance.

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Rubber composition for tire treads that provides a balance of low rolling resistance, good wet traction, and wear resistance. The composition contains specific diene rubber, silica, a silane coupling agent, a fatty acid metal salt, and an alkylsilane. The diene rubber has a high percentage of a specific conjugated diene rubber formed by reacting a siloxane with a diene-based polymer. This improves silica dispersion for rolling resistance. The alkylsilane plasticizer suppresses silica aggregation. The fatty acid salt further aids silica dispersion. The blend ratio of these components provides a balance of rolling resistance, wet traction, and wear resistance.

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Rubber compound for tire treads that improves wet grip, rolling resistance, and profile stiffness. The compound contains a functionalized butadiene rubber, a liquid-modified diene polymer, a polar filler like silica, and a diene rubber. The functionalized butadiene rubber interacts with the polar filler. The modified diene polymer has a backbone modification that also allows interaction with the polar filler. This filler-rubber interaction improves wet grip and rolling resistance while maintaining stiffness.

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Tire rubber composition that provides improved wet grip and fuel efficiency. The composition contains an isoprene skeleton rubber, a modified styrene-butadiene rubber with 15% or less bound styrene, hydrogenated resin with a softening point over 100°C and Mw of 1200-1600, silica with 50-100% filler content, and carbon black. This balance of components enables optimized wet traction and reduced rolling resistance.

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Rubber composition for tires that balances wet grip, fuel efficiency, and wear resistance. The composition contains a styrene-butadiene rubber (A) with a modified terminal group, and an unmodified styrene-butadiene rubber (B) with a higher glass transition temperature. The modified rubber (A) is produced by modifying an active polymer with a compound containing a silicon atom bonded to an amine group. This improves dispersion of fillers like silica for better wet grip and wear resistance. The unmodified rubber (B) provides the balance of fuel efficiency.

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Rubber composition for tires with improved steering stability, wet performance, and low rolling resistance over a wide temperature range. The composition contains specific amounts of modified styrene-butadiene rubber, silica, thermoplastic resin, and a silane coupling agent. The modified styrene-butadiene rubber has a vinyl content of 9-45 mol% and a glass transition temperature of -45°C or lower, with terminal groups containing siloxane or amine functionalities. The composition also has silica, thermoplastic resin, and a silane coupling agent in specific ranges.

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Rubber composition for tire treads that provides improved wet grip and rolling resistance compared to conventional tire rubber compositions. The composition contains a diene elastomer, a high surface area silica (Tl > 100 m2/g) as the main reinforcing filler, a microsilica (T2 < 50 m2/g) as a secondary filler, a silane coupling agent, and a crosslinking system. The microsilica in addition to the high surface area silica enhances wet grip and reduces rolling resistance compared to using just the high surface area silica.

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Low-rolling-resistance high-wear resistance tire tread rubber composition that can improve the dispersion of white carbon black in tread rubber and the processability of rubber materials by using white carbon black and silica fume as fillers and selecting a silane coupling agent capable of mixing at high temperature. The composition includes carbon black and white carbon black as fillers, and selecting a silane coupling agent capable of mixing at high temperature.

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