Temperature-Regulating Fabric With Stabilized Phase-Change Yarn
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Solution Overview
Problem
Conventional yarn manufacturing processes cause decomposition of phase change materials at high temperatures, leading to a loss of temperature-regulating effect in textiles due to denaturation of phase change materials during melt-spinning.
Innovation Solution
A temperature-regulating composite material comprising a thermoplastic material, phase change material, and antioxidant, with specific weight percentages and transition temperatures, is used to enhance the decomposition temperature of the phase change material, thereby stabilizing it during high-temperature processing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If phase change material is added to fibers to provide temperature-regulating effect, then temperature regulation performance is improved, but decomposition occurs at high temperature melting leading to content loss
Solution Approach 1:
The patent creates a composite material system consisting of thermoplastic material, phase change material, and antioxidant. The antioxidant component forms a protective system with the phase change material, raising the decomposition temperature from below 100°C to 140-180°C, thereby preventing material loss during high-temperature melting while preserving temperature-regulating functionality.
Solution Approach 2:
The patent changes the decomposition temperature parameter of the phase change material by adding antioxidant. This parameter change enables the phase change material to withstand the high temperature melting process (typically 150-200°C for thermoplastic processing) without decomposing, thus maintaining both processing feasibility and functional integrity.
2Ease of manufacture
If fibers are melted at high temperature to form yarns, then manufacturing process is completed, but phase change material decomposes and loses temperature-regulating effect
Solution Approach 1:
The antioxidant is added to the phase change material before the melting process, creating a protective cushion against thermal decomposition. This preliminary protection allows the phase change material to survive the high-temperature melt-spinning process without losing its temperature-regulating properties, thus cushioning against the harmful effect of high temperature processing.
Solution Approach 2:
The antioxidant acts as an intermediary substance between the phase change material and the high temperature environment. It mediates the interaction by absorbing or neutralizing thermal energy that would otherwise cause decomposition, thereby protecting the phase change material's functional integrity during manufacturing.
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 composite material maintains a stable temperature-regulating effect by reducing heat loss, ensuring the fabric provides a steady and effective thermal management performance.
Implementation Method 1
The phase change material could absorb or release a large amount of latent heat during phase change to provide a temperature-regulating effect
Implementation Method 2
a phase change material is added to fibers, wherein the phase change material could change phases at a particular temperature range
Implementation Method 3
An antioxidant is added to the phase change material to increase a decomposition temperature of the phase change material, so that a problem of denaturation of the phase change material during a melt-spinning process is relieved
Data Source
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AI summary
A temperature-regulating composite material includes a thermoplastic material, a phase change material, and an antioxidant. A transition temperature of the phase change material ranges from 0°C to 65°C. An addition of the antioxidant is based on a content of the phase change material and is less than or equal to 10% of the content of the phase change material. A decomposition temperature of the temperature-regulating composite material ranges from 140°C to 400°C. A temperature-regulating fabric includes a plurality of composite yarns (10). Each composite yarn (10) has a core layer (11) and a wrapping layer (12) correspondingly enclosing the core layer (11). The core layer (11) includes the temperature-regulating composite material. A temperature regulating factor of the temperature-regulating fabric is less than 0.8.