Rubber Composition with Short Fibers and Surface Active Agents
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Solution Overview
Problem
Studless tires face limitations in achieving further improvements in fracture resistance, wear resistance, and on-ice performance despite existing rubber compositions.
Innovation Solution
A rubber composition incorporating a diene-based rubber component, short fibers, and specific surface active agents such as fatty acid polyhydric alcohol esters, nonionic ester type surface active agents, and sulfonic acid type surface active agents, which are blended with a foaming agent to enhance drainage performance and physical properties.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional rubber compositions are used, then basic tire functions are maintained, but fracture resistance, wear resistance, and on-ice performance cannot be further improved
Solution Approach 1:
The invention uses a composite material system combining short fibers (glass, metal, or organic) with specific surface active agents to create a new rubber composition that achieves superior fracture resistance, wear resistance, and on-ice performance compared to conventional rubber compositions without fibers or with different additives
Solution Approach 2:
The invention changes the chemical and physical parameters of the rubber composition by introducing specific surface active agents (fatty acid polyhydric alcohol esters, nonionic ester types, alkanolamide types, or sulfonic acid types) that modify the interaction between short fibers and rubber, thereby improving mechanical properties and on-ice performance
2Strength
If short fiber is added to improve fracture resistance, then fracture resistance improves, but dispersion uniformity and drainage performance may deteriorate
Solution Approach 1:
The surface active agent acts as an intermediary substance between the short fiber and the rubber matrix, improving the wettability and adhesion of fibers to rubber, thereby achieving uniform dispersion of short fibers throughout the rubber composition without aggregation
Solution Approach 2:
The surface active agents modify the surface energy and chemical properties of the short fibers, changing parameters such as surface wettability and interfacial adhesion, which enables uniform dispersion and maintains composition stability throughout the rubber composition
3Stability of the object's composition
If surface active agent is used to improve fiber dispersion, then dispersion improves, but on-ice performance and wear resistance may not be sufficiently enhanced
Solution Approach 1:
The invention creates a composite system where short fibers provide structural reinforcement for wear resistance and on-ice performance, while surface active agents ensure proper dispersion, achieving synergistic effects that enhance multiple performance aspects simultaneously
Solution Approach 2:
The specific surface active agents not only improve dispersion but also modify the rubber-fiber interface properties to enhance friction and adhesion characteristics, thereby improving on-ice performance and wear resistance through controlled changes in interfacial parameters
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 rubber composition significantly improves fracture resistance, wear resistance, and on-ice performance, particularly in studless tires, by optimizing fiber dispersion and drainage capabilities.
Implementation Method 1
a surface active agent, in which the surface active agent contains at least one material selected from the group consisting of a fatty acid polyhydric alcohol ester, a nonionic ester type surface active agent, an alkanolamide type surface active agent, and a sulfonic acid type surface active agent
Data Source
AI summary
Provided are a rubber composition excellent in fracture resistance, wear resistance, and on-ice performance, and a tire obtained therefrom. There are provided a rubber composition containing: a diene-based rubber component; a short fiber; and a surface active agent, in which the surface active agent contains at least one material selected from the group consisting of a fatty acid polyhydric alcohol ester, a nonionic ester type surface active agent, an alkanolamide type surface active agent, and a sulfonic acid type surface active agent, and a tire obtained from the rubber composition, more particularly a studless tire.