Tire Tread Rubber Composition Wear Resistance Grip
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Tires with existing rubber compositions for treads have limited wear resistance and grip performance, necessitating an improvement in both abrasion resistance and grip capabilities.
Innovation Solution
A tire tread composed of a rubber composition that includes 5 to 100 parts by mass of an aromatic petroleum resin with a weight average molecular weight of 1000 to 5000, combined with linear styrene butadiene rubber having a styrene content of 35 to 45% and a weight average molecular weight of 1,000,000 to 1,400,000, which enhances interaction and improves wear resistance and grip performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of stationary object
If a rubber composition with low glass transition temperature is used to improve wear resistance, then wear resistance is improved, but grip performance deteriorates
Solution Approach 1:
The patent changes the molecular weight parameter of the aromatic petroleum resin to a specific range (1000-5000) and adjusts its content (5-100 parts by mass per 100 parts rubber component) to optimize both wear resistance and grip performance. This parameter optimization resolves the contradiction by finding the precise balance point where both properties are improved.
Solution Approach 2:
The patent creates a composite rubber composition by combining linear styrene butadiene rubber with aromatic petroleum resin in specific proportions. This composite material approach allows the synergistic interaction between the rubber component and resin to simultaneously enhance wear resistance and grip performance, resolving the trade-off between these two properties.
2Duration of action of stationary object
If the molecular weight of aromatic petroleum resin is increased to improve wear resistance, then wear resistance is improved, but grip performance deteriorates
Solution Approach 1:
The patent identifies and optimizes the molecular weight parameter of aromatic petroleum resin, specifying a range of 1000-5000. This parameter change resolves the contradiction by determining that this specific molecular weight range provides the optimal balance between wear resistance and grip performance, preventing the deterioration of grip while improving wear resistance.
Data Source
AI summary
Provided is a tire comprising a tread composed of a rubber composition, the rubber composition comprising 5 to 100 parts by mass of an aromatic petroleum resin having a weight average molecular weight of 1000 to 5000, based on 100 parts by mass of a rubber component comprising a linear styrene butadiene rubber having a styrene content of 35 to 45% by mass, a vinyl content of 35 to 45% by mass, and a weight average molecular weight of 1,000,000 to 1,400,000.