Rubber Composition for Wet Grip and Fuel Efficiency
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Tires face a trade-off between wet grip performance and fuel consumption, with existing rubber compositions unable to improve fuel efficiency without compromising wet grip or workability.
Innovation Solution
A rubber composition is developed by blending carbon black, an inorganic filler, a sulfur-containing compounding agent, and a boron-containing compounding agent into sulfur-crosslinkable diene rubber, which accelerates chemical reactions to enhance wet grip and reduce fuel consumption without diminishing workability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the hysteresis loss is increased to improve wet grip performance, then the wet grip performance is improved, but the roll resistance is increased and fuel consumption performance is reduced
Solution Approach 1:
The patent applies parameter changes by precisely controlling the amounts of sulfur-containing compounding agent (0.5-30 parts by mass) and boron-containing compounding agent (0.01-20 parts by mass) to optimize the chemical reaction rate. This adjustment of compositional parameters enables the rubber to achieve both high hysteresis loss for wet grip and controlled heat generation to maintain low roll resistance, thereby resolving the contradiction between wet grip performance and fuel consumption performance
Solution Approach 2:
The patent uses composite materials by combining carbon black (1-100 parts by mass) and inorganic filler (5-150 parts by mass) in specific proportions within the rubber composition. This composite approach allows the material to exhibit both high hysteresis loss for improved wet grip and controlled mechanical properties to maintain low roll resistance, thus achieving both wet grip performance and fuel consumption performance simultaneously
2Strength
If the strength of the rubber material is increased to improve durability and wear resistance, then the durability is improved, but the workability is reduced
Solution Approach 1:
The patent applies parameter changes by optimizing the amount of boron-containing compounding agent (0.01-20 parts by mass) which acts as a catalyst to accelerate the chemical reaction between sulfur-containing compounding agent and rubber. This enables the rubber to achieve high strength and durability with reduced sulfur content and optimized curing conditions, thereby maintaining good workability during processing while achieving the desired mechanical properties
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 composition achieves excellent wet grip performance and low fuel consumption while maintaining workability, with improved tensile strength, elongation, and modulus, and reduced heat generation.
Implementation Method 1
blending from 0.01 to 20 parts by mass of a boron-containing compounding agent into 100 parts by mass of a sulfur-crosslinkable diene rubber so as to accelerate the chemical reaction between the sulfur-containing compounding agent and the rubber
Implementation Method 2
a chemical reaction of sulfur and rubber, a sulfur-containing vulcanization accelerator and rubber, or silica, a sulfur-containing silane coupling agent, and rubber; sulfur and rubber produce a crosslinking reaction
Data Source
AI summary
A rubber composition includes a sulfur-crosslinkable diene rubber, from 1 to 100 parts by mass of carbon black and/or from 5 to 150 parts by mass of an inorganic filler, from 0.5 to 30 parts by mass of a sulfur-containing compounding agent, and from 0.01 to 20 parts by mass of a phosphine borane compound based on 100 parts by mass of the sulfur-crosslinkable diene rubber. The rubber composition may be applied in at least one type selected from the group consisting of a capped tread, a side wall, a belt, an inner liner, a carcass, and a bead of a pneumatic tire.