Tire Tread Composition for High-Speed Handling Stability
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Solution Overview
Problem
Current tires fail to maintain handling stability during high-speed driving, as vehicle performance advancements and longer highway travel require improved grip and friction management at elevated speeds.
Innovation Solution
A tire tread composition incorporating isoprene-based rubber, styrene-butadiene rubber, silica, and carbon black, with specific mass ratios and glass transition temperature control, forming a microphase-separated structure for enhanced grip and friction transfer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional rubber compositions are used in the tread, then the tire structure is simple and manufacturing is easier, but handling stability during high-speed driving deteriorates
Solution Approach 1:
The patent uses a composite rubber composition containing isoprene-based rubber (50-90 parts), styrene-butadiene rubber (10-50 parts), silica (80-200 parts), and carbon black (50-150 parts) to achieve superior handling stability at high speeds. This multi-component composite material provides both wet and dry grip while maintaining structural complexity that justifies the performance improvement
Solution Approach 2:
The patent optimizes specific parameter ranges including silica content (80-200 parts per 100 parts rubber), carbon black content (50-150 parts), isoprene-based rubber (50-90 parts), and styrene-butadiene rubber (10-50 parts). These parameter changes within defined ranges achieve the balance between handling stability and composition complexity
2Reliability
If the silica content is increased to improve grip, then handling stability improves, but the manufacturing cost and process complexity increase
Solution Approach 1:
The patent specifies silica content in the range of 80-200 parts per 100 parts rubber components, with optimal ranges identified. This parameter optimization achieves high grip performance while controlling manufacturing complexity through defined specifications
Solution Approach 2:
The patent combines silica with carbon black and specific rubber components to create a composite system where the total filler content (silica + carbon black) is controlled at 130-350 parts per 100 parts rubber. This composite approach distributes the complexity across multiple components rather than relying on a single high-silica formulation
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The tire tread composition significantly improves handling stability at high speeds by enhancing grip and facilitating fast response to friction, ensuring better road contact and stability during high-speed driving.
Implementation Method 1
forming a microphase-separated structure for enhanced grip and friction transfer
Implementation Method 2
the rubber composition containing the silica in an amount of 80 parts by mass or more per 100 parts by mass of the rubber components
Data Source
AI summary
Provided is a tire to improve handling stability during high-speed driving. The tire includes a tread, the tread including a rubber composition that contains rubber components including an isoprene-based rubber and a styrene-butadiene rubber, a silica, and a carbon black, the rubber composition containing the silica in an amount of 80 parts by mass or more per 100 parts by mass of the rubber components, the rubber composition satisfying the following formulas (1) and (2), the rubber composition and the tread satisfying the following formulas (3) and (4): Amountofisoprene-basedrubber−Totalstyrenecontentofrubbercomponents>0 Amountofcarbonblack−Totalstyrenecontentofrubbercomponents>0 A/B>8 C/D>2.00 where A denotes the amount (parts by mass) of the silica in the rubber composition, B denotes a largest thickness (mm) of the tread, C denotes a land ratio (%) of the tread, and D denotes a glass transition temperature (°C) of the rubber composition.