Silica Tire Rubber Masterbatch for Wear, Grip, and Fuel Efficiency
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing rubber materials for tires struggle to achieve a balanced performance in wear resistance, fuel efficiency, and wet grip properties due to the use of carbon black or silica fillers, leading to decreased wear resistance when improving wet grip and fuel efficiency.
Innovation Solution
A masterbatch containing hydrophilic fumed silica with a high specific surface area and a silane coupling agent is used, blended with natural and synthetic rubbers, and kneaded using a low rotor speed kneader to ensure dispersion, achieving a balanced performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If silica produced by wet-process is used as a filler to improve wet grip property and fuel efficiency, then wet grip property and fuel efficiency are improved, but wear resistance decreases
Solution Approach 1:
An inorganic compound powder (such as alumina, silica, or titania) is introduced as an intermediary substance to mediate between the wet-process silica and carbon black. This intermediary powder improves the dispersibility of wet-process silica in the rubber matrix, allowing for better wet grip and fuel efficiency while maintaining wear resistance by optimizing the filler network structure.
Solution Approach 2:
The invention uses a composite filler system comprising wet-process silica, carbon black, and inorganic compound powder in specific proportions. This composite approach allows the synergistic effects of different fillers to achieve improved wet grip and fuel efficiency while the carbon black and inorganic compound powder maintain the wear resistance that would otherwise be lost.
2Reliability
If a large amount of inorganic compound powder is blended to improve wet grip property and fuel efficiency, then wet grip property and fuel efficiency are improved, but wear resistance decreases
Solution Approach 1:
The invention optimizes the parameters of the inorganic compound powder, specifically controlling its specific surface area (5-20 m²/g) and blending it in precise proportions (5-50 parts by mass per 100 parts by mass of rubber). By carefully adjusting these parameters, the invention achieves improved wet grip and fuel efficiency without excessive wear resistance loss.
Solution Approach 2:
The inorganic compound powder is strategically positioned within the rubber matrix to create localized regions that enhance wet grip and fuel efficiency. The powder distributes preferentially in areas where it can maximize its beneficial effects on adhesion and rolling resistance while maintaining the overall structural integrity and wear resistance of the tire material.
3Strength
If hydrophilic fumed silica with high specific surface area is used to improve wear resistance, then wear resistance is improved, but dispersibility in rubber decreases and Mooney viscosity increases
Solution Approach 1:
The inorganic compound powder serves as a mediator between the hydrophilic fumed silica and the rubber matrix. It facilitates the dispersibility of the high-specific-surface-area silica by providing a compatible interface, allowing the silica to maintain its wear resistance benefits without causing excessive Mooney viscosity or poor processing characteristics.
Solution Approach 2:
The invention carefully controls the specific surface area of the inorganic compound powder (5-20 m²/g), which is significantly lower than that of hydrophilic fumed silica. This parameter adjustment reduces the overall surface area requiring rubber adhesion, thereby improving dispersibility and reducing Mooney viscosity while still maintaining the wear resistance benefits of the high-surface-area silica.
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 solution results in a tire material with enhanced wear resistance, fuel efficiency, and wet grip properties, suitable for passenger car tires.
Implementation Method 1
A masterbatch containing hydrophilic fumed silica with a high specific surface area and a silane coupling agent is used, blended with natural and synthetic rubbers
Implementation Method 2
blended with natural and synthetic rubbers, and kneaded using a low rotor speed kneader to ensure dispersion
Data Source
Figure 1~2
AI summary
[Problem] To provide: a tire rubber material having an excellent balance of wear resistance, fuel efficiency, and wet grip; a masterbatch and a tire rubber composition that are suitable for producing said tire rubber material; a manufacturing method thereof; and a tire including a tire member made of said tire rubber material. [Solution] Provided is a masterbatch comprising: a rubber component that is at least one selected from the group consisting of natural rubber and synthetic rubber; a reinforcing filler containing hydrophilic fumed silica; and a silane coupling agent, wherein on the basis of 100 parts by mass of the rubber component, the amount of the hydrophilic fumed silica is 13-130 parts by mass and the amount of the silane coupling agent is 1-40 parts by mass, and the mass proportion of the hydrophilic fumed silica in 100 mass% of the reinforcing filler is at least 50%.