Rubber Composition With Lignin-Amine Blend for Wet Grip
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Solution Overview
Problem
Conventional rubber compositions for shoe soles and tires do not adequately enhance grip force on wet road surfaces, limiting slip prevention and traction.
Innovation Solution
A rubber composition blending a rubber component with lignin and a specific amine compound, represented by a general formula, which improves grip force through enhanced cohesiveness and hysteresis loss, specifically formulated for shoe soles and tires.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If conventional rubber compositions are used for shoe soles and tires, then basic mechanical properties are maintained, but grip force on wet road surfaces is insufficient
Solution Approach 1:
The patent applies composite materials by combining rubber components with specific amine compounds (having both hydrophobic and hydrophilic groups) to create a multi-phase composition. This composite structure enables the material to simultaneously maintain basic mechanical properties while providing enhanced grip force on wet surfaces through the amphiphilic nature of the amine compound
2Strength
If filler such as silica and carbon black are blended in rubber compositions, then strength and abrasion resistance are enhanced, but grip force on wet surfaces remains insufficient
Solution Approach 1:
The patent applies local quality by incorporating amine compounds with specific amphiphilic properties into the rubber composition. These compounds create localized regions with different surface characteristics - hydrophobic regions for structural integrity and hydrophilic regions for wet surface adhesion - thereby providing grip force enhancement without compromising overall strength
3Force
If various anti-aging agents and polyphenol-based compounds are added to improve grip force, then grip force is enhanced, but the composition complexity increases
Solution Approach 1:
The patent applies universality by using amine compounds that perform multiple functions simultaneously: they provide grip force enhancement through their amphiphilic nature, act as anti-aging agents, and maintain compositional simplicity. This multi-functional approach avoids the need for multiple separate additives, thereby reducing composition complexity while achieving the desired grip force
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 grip force on wet surfaces, as evidenced by increased maximum static and average kinematic frictional forces, enhancing slip resistance and traction.
Implementation Method 1
the rubber composition with an excellent grip force... by blending a rubber component with a lignin and a specified amine compound... the grip force of the rubber composition can be improved
Implementation Method 2
the grip force of the rubber composition can be improved through enhanced cohesiveness and hysteresis loss
Data Source
AI summary
The present invention relates to a rubber composition with an excellent grip force; a method of producing the rubber composition; a shoe sole, a shoe, and a tire each using the rubber composition; and a method of improving a frictional force of a rubber component.The present invention is concerned with [1] a rubber composition containing a rubber component (A), a lignin degradation product (B), and a specified amine compound (C); [2] a rubber composition composed of a blend of a rubber component (A), a lignin (B), and a specified amine compound (C); [3] a shoe sole using the aforementioned rubber composition; [4] a shoe having the aforementioned shoe sole; [5] a tire using the aforementioned rubber composition; [6] a method of producing a rubber composition, including blending a rubber component (A), a lignin (B), and a specified amine compound (C) and vulcanizing the blend; and [7] a method of improving a frictional force of a rubber component, including blending a rubber component (A), a lignin (B), and a specified amine compound (C).