Non-Pneumatic Tire Adhesion Using a Polyester-Rubber Interlayer
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Solution Overview
Problem
The existing non-pneumatic tires face challenges in achieving strong adhesion between polyester and rubber materials, which affects the durability and weatherproofness of the tire.
Innovation Solution
Incorporating a urethane-based or epoxy-based adhesive layer between the polyester and rubber components, with specific compositions and surface roughness of the polyester material, to enhance adhesion and durability, and using a multi-layered rubber tread with varying antioxidant and surfactant content.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a polyester material is used for the skeleton member, then cost and availability are improved, but adhesion to the rubber tread member deteriorates
Solution Approach 1:
An adhesive layer is introduced as an intermediary between the polyester skeleton member and the rubber tread member. This adhesive layer mediates the bonding interface, enabling strong adhesion between the two materials while preserving the cost advantages of using polyester instead of polyamide.
2Reliability
If antioxidant, stearic acid and surfactant are added to the rubber layer adjacent to the adhesive layer, then adhesion is improved, but weatherproofness deteriorates
Solution Approach 1:
The rubber tread member is designed with spatially varying composition: the rubber layer adjacent to the adhesive layer contains antioxidant, stearic acid, and surfactant to enhance adhesion, while the ground-contact side rubber layer has higher weatherproofness requirements. This local differentiation of material properties resolves the contradiction between adhesion and weatherproofness.
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
Improves adhesion between polyester and rubber materials, enhancing the durability and weatherproofness of the tire, while maintaining a compatible and cost-effective manufacturing process.
Implementation Method 1
an adhesive layer composed of a urethane-based adhesive or an epoxy-based adhesive and provided between the member composed of a polyester material and the member composed of a rubber material
Data Source
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AI summary
An object of the present disclosure is to improve, in a tire having a composite body of a member composed of a polyester material and a member composed of a rubber material, adhesion between the two members. In order to achieve the object, the present disclosure provides a tire having a composite body, wherein the composite body comprises: a member composed of a polyester material; a member composed of a rubber material; and an adhesive layer composed of a urethane-based adhesive or an epoxy-based adhesive and provided between the member composed of a polyester material and the member composed of a rubber material.