Studless Tire Rubber Composition for Ice Grip and Wear Resistance
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Studless tires face challenges in enhancing friction on ice while maintaining wear resistance, as existing rubber compositions do not adequately address the need for improved performance on ice and compatible wear resistance.
Innovation Solution
A rubber composition for tires is developed, comprising a specific ratio of three-dimensionally crosslinked silicone-based microparticles, a nonionic surfactant, and thermally expanding microcapsules, which work together to enhance friction on ice and provide excellent wear resistance by efficiently guiding water into the microcapsules, allowing the rubber to deform and absorb water effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If silicone-based microparticles are added to enhance friction on ice, then performance on ice is improved, but wear resistance performance deteriorates
Solution Approach 1:
The patent applies parameter changes by precisely controlling the particle size distribution of silicone-based microparticles (average 5-500 μm with specific ranges), the amount of nonionic surfactant (0.1-10 parts by mass), and the content of thermally expanding microcapsules (1-20 parts by mass). This optimization of parameters enables simultaneous improvement of ice friction performance and wear resistance, resolving the technical contradiction between these two properties.
Solution Approach 2:
The patent creates a composite rubber composition system combining diene rubber, silicone-based microparticles, nonionic surfactant, and thermally expanding microcapsules. This composite approach allows the synergistic interaction of components where the nonionic surfactant guides water into microcapsules and the crosslinked silicone particles provide friction enhancement while maintaining structural integrity for wear resistance.
2Reliability
If the amount of silicone-based microparticles is increased to improve friction on ice, then performance on ice is enhanced, but the homogeneity of the rubber composition deteriorates
Solution Approach 1:
The nonionic surfactant acts as an intermediary substance that mediates between water and the thermally expanding microcapsules. It efficiently guides water into the microcapsules, ensuring uniform distribution and interaction throughout the rubber composition. This intermediary mechanism maintains homogeneity even when silicone-based microparticles are present in optimized amounts for ice friction enhancement.
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 remarkable performance on ice and wear resistance, with the combination of components ensuring high homogeneity and improved frictional forces on icy surfaces, as demonstrated by the coefficient of friction measurements and wear resistance performance indices.
Implementation Method 1
from 1 to 20 parts by mass of thermally expanding microcapsules
Implementation Method 2
from 0.1 to 10 parts by mass of a nonionic surfactant, and from 1 to 20 parts by mass of thermally expanding microcapsules
Implementation Method 3
from 1 to 20 parts by mass of silicone-based microparticles that have an average particle size from 5 to 500 μm and that are three-dimensionally crosslinked
Data Source
AI summary
The present technology provide a rubber composition including: 100 parts by mass of a diene rubber, from 30 to 100 parts by mass of carbon black and/or a white filler, from 1 to 20 parts by mass of silicone-based microparticles that have an average particle size from 5 to 500 μm and that are three-dimensionally crosslinked, from 0.1 to 10 parts by mass of a nonionic surfactant, and from 1 to 20 parts by mass of thermally expanding microcapsules.