Thermoplastic Elastomer Tire Frame Molecular Orientation Control
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Solution Overview
Problem
Tires made from resin materials, such as thermoplastic elastomers, face challenges in achieving superior durability due to uncertainties in controlling the state of the resin material, which affects the tire's properties like cracking resistance.
Innovation Solution
A tire frame using a thermoplastic elastomer with a specific molecular orientation value (f) between -0.08 and 0.08, measured by small angle X-ray scattering, along with controlled long period (L) and crystallinity (Xc) values, enhances durability by effective dispersion of mechanical power and improved crystal growth.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Weight of moving object
If a tire frame is formed using a thermoplastic elastomer as a resin material, then weight reduction and ease of molding are achieved, but durability and cracking resistance remain insufficient due to uncontrollable resin material state
Solution Approach 1:
The patent applies parameter changes by precisely controlling the orientation parameter (f value) of the thermoplastic elastomer molecules within the range of -0.08 to 0.08. This parameter control transforms the resin material state to achieve both weight reduction benefits and improved durability, resolving the contradiction between using lightweight thermoplastic elastomers and maintaining tire reliability
2Reliability
If the resin material state is controlled to improve tire properties, then durability is enhanced, but the manufacturing precision and control complexity increase
Solution Approach 1:
The patent employs feedback control by measuring the orientation parameter (f value) of the thermoplastic elastomer and adjusting manufacturing parameters accordingly. This feedback mechanism enables precise control of the resin material state to achieve the target f value range, thereby improving durability while maintaining manageable manufacturing precision through systematic monitoring and adjustment
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 tire exhibits superior durability and resistance to cracking while maintaining favorable fuel efficiency, achieved through precise control of molecular orientation and crystallinity in the thermoplastic elastomer.
Implementation Method 1
the thermoplastic elastomer having a value of orientation f, as measured by small angle X-ray scattering, of from -0.08 to 0.08
Data Source
Figure 1A~1B
Figure 2
Figure 3
AI summary
A tire having a tire frame, the tire frame comprising a thermoplastic elastomer as a resin material, and the thermoplastic elastomer having a value of orientation f, as measured by a small angle X-ray scattering method, of from -0.08 to 0.08.