Tire Rubber Composition Using Persimmon Extract Composite Powder
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Solution Overview
Problem
Existing rubber compositions for tires fail to simultaneously reduce the odor of rubber and improve on-ice performance or fatigue resistance, as described in prior art documents.
Innovation Solution
A rubber composition incorporating a composite powder of persimmon fruit extract and sodium carbonate, which is blended with rubber components, reduces rubber odor through chemical reactions and enhances on-ice performance and fatigue resistance by forming fine voids that absorb water, improving traction and resisting radical generation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a rubber member is used to occupy a major portion of the tread member, then gripping performance is improved, but odor peculiar to rubber increases
Solution Approach 1:
The patent changes the chemical composition parameters of the rubber by incorporating specific natural rubber (70-90 parts), styrene-butadiene rubber (10-30 parts), and key additives including persimmon extract (0.1-5 parts) and zinc oxide (2-5 parts). This compositional parameter change reduces rubber odor while maintaining gripping performance on icy roads.
Solution Approach 2:
The patent creates a composite rubber material combining multiple rubber types (natural rubber, styrene-butadiene rubber) with functional additives (persimmon extract, zinc oxide, sulfur, fillers). This composite approach achieves both odor reduction and maintained gripping performance through synergistic material interactions.
2Strength
If a rubber member is used to occupy a major portion of the sidewall member, then structural support is improved, but odor peculiar to rubber increases
Solution Approach 1:
The patent modifies the rubber composition parameters with natural rubber (70-90 parts), styrene-butadiene rubber (10-30 parts), and functional additives including zinc oxide (2-5 parts) and persimmon extract (0.1-5 parts). These parameter changes reduce odor while maintaining the strength and fatigue resistance required for sidewall structural support.
Solution Approach 2:
The patent develops a composite rubber material combining natural rubber, styrene-butadiene rubber, zinc oxide, persimmon extract, and other additives. This composite structure provides both odor reduction and the mechanical strength needed for sidewall applications.
3Ease of manufacture
If existing rubber compositions are used, then manufacturing simplicity is maintained, but on-ice performance is insufficient
Solution Approach 1:
The patent adjusts compositional parameters by incorporating persimmon extract (0.1-5 parts) and zinc oxide (2-5 parts) into the rubber formulation. These parameter changes improve on-ice gripping performance while maintaining compatibility with existing manufacturing processes.
Solution Approach 2:
The patent uses zinc oxide as an intermediary substance that facilitates improved on-ice performance through chemical interactions in the rubber composition, while persimmon extract acts as another intermediary that enhances gripping performance on icy surfaces without complicating manufacturing.
4Quantity of substance
If existing rubber compositions are used, then production cost is controlled, but fatigue resistance is insufficient
Solution Approach 1:
The patent optimizes compositional parameters with natural rubber (70-90 parts), styrene-butadiene rubber (10-30 parts), zinc oxide (2-5 parts), and persimmon extract (0.1-5 parts). These parameter changes enhance fatigue resistance for sidewall applications while controlling production costs through efficient use of additives.
Solution Approach 2:
The patent creates a cost-effective composite rubber material combining natural rubber, styrene-butadiene rubber, and functional additives. This composite approach improves fatigue resistance through material synergies while maintaining economical production.
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 effectively decreases rubber odor, stabilizes vulcanization, and enhances on-ice performance and fatigue resistance, maintaining abrasion resistance and improving gripping performance on icy surfaces.
Implementation Method 1
decreases rubber odor through chemical reactions
Implementation Method 2
forming fine voids that absorb water, improving traction
Implementation Method 3
resisting radical generation
Data Source
AI summary
A rubber composition for tire tread or a rubber composition for tire sidewall, comprising one or more rubber components, and a composite powder which comprises a persimmon fruit extract and sodium carbonate and which is in an amount of 1.0 to 10 parts by mass when a total amount of the rubber component(s) is regarded as 100 parts by mass. In the rubber compositions, it is preferable that in the composite powder, a ratio by mass of the persimmon fruit extract to the sodium carbonate is from 1:1 to 5:1. Moreover, in the rubber compositions, it is preferable that when a total amount of the rubber component(s) is regarded as 100 parts by mass, an effective component amount of the persimmon fruit extract in the composite powder is from 0.01 to 8.0 parts by mass.