Tyre Insert With Recycled Elastomer Matrix
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Solution Overview
Problem
Current tire technologies face challenges in utilizing recycled tire materials effectively, as they often limit the proportion of recycled materials to maintain performance, leading to high raw material costs and vulnerability to cracking and chemical/UV attacks, while also not fully addressing environmental concerns.
Innovation Solution
A tire design incorporating a high proportion of recycled tire powder, with a reinforcing structure and insert comprising a first elastomer composition as a matrix and a second elastomer composition derived from recycled tires, where the second composition constitutes at least 40% of the mixture, distributed uniformly, and a sealing layer with antioxidants, facilitating reduced raw material costs and enhanced durability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If a high proportion of recycled tire powder is used, then raw material costs are reduced and environmental sustainability is improved, but tire performance and durability deteriorate
Solution Approach 1:
The tire is divided into different zones with different elastomer composition proportions. The insert located between the reinforcing structure and the internal wall contains a high proportion of recycled elastomer composition (at least 40%), while other load-bearing structures maintain lower proportions to ensure performance. This segmentation allows high recycled material usage without compromising overall tire reliability.
Solution Approach 2:
Different regions of the tire are assigned different material compositions based on their specific functional requirements. The insert zone, which does not bear the highest loads, receives the high-proportion recycled elastomer composition, while critical load-bearing areas use lower proportions. This local quality approach optimizes both material sustainability and performance where needed.
2Quantity of substance
If recycled tire materials are used, then raw material costs are reduced, but resistance to cracking and chemical/UV attacks worsens
Solution Approach 1:
The tire structure is segmented into zones with different material compositions. The insert containing high-proportion recycled elastomer composition (at least 40%) is positioned in areas less exposed to UV and chemical attacks, while the outer layers and load-bearing structures use lower proportions of recycled material with better resistance to these harmful factors.
Solution Approach 2:
Different regions are assigned different elastomer composition proportions based on their exposure to harmful factors. Areas subject to UV and chemical attacks use lower proportions of recycled material, while the insert in protected zones uses high proportions, optimizing both cost and resistance to degradation.
3Reliability
If low proportions of recycled materials are used, then tire performance is maintained, but raw material costs increase and environmental benefits are reduced
Solution Approach 1:
The tire is segmented into different zones with optimized material compositions. The insert contains at least 40% recycled elastomer composition, maximizing material reuse in non-critical areas, while load-bearing structures use lower proportions to maintain performance. This segmentation achieves both cost reduction and performance maintenance.
Solution Approach 2:
Different regions are assigned different material compositions based on their functional requirements. The insert zone receives high-proportion recycled elastomer composition for cost and environmental benefits, while critical load-bearing areas use lower proportions to ensure performance, achieving local optimization of both objectives.
Data Source
Figure 1
AI summary
The invention relates to a tyre (1) comprising sidewalls (2), a crown area (3) provided with a tread (4), a reinforcement structure (5) extending between the sidewalls (2) and passing through the crown area (3), at least one portion of the area of the tyre axially inward from the reinforcement structure (5) including an insert (6) comprising a first elastomer composition which serves as a matrix in which a second elastomer composition obtained from recycled tyres is distributed in a substantially uniform manner, the proportion of said second elastomer composition being no less than 40%.