Temperature-Regulating Composite Material for Melt-Spinning Stability
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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.
Innovation Solution
A temperature-regulating composite material comprising a thermoplastic material, phase change material, and antioxidant, with specific weight percentages and transition temperatures, is developed to enhance the decomposition temperature of the phase change material, thereby stabilizing it during high-temperature melt-spinning processes.
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 forms a protective network within the composite structure that prevents decomposition of the phase change material during high-temperature processing, thereby maintaining both temperature-regulating performance and material content stability.
Solution Approach 2:
The patent modifies the thermal stability parameters of the phase change material by introducing antioxidant substances. This chemical modification raises the decomposition temperature of the phase change material from its original low-temperature decomposition point to a higher temperature range, enabling it to withstand conventional melt-spinning process temperatures without significant content loss.
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 capability
Solution Approach 1:
The antioxidant is incorporated into the phase change material before the melt-spinning process. This pre-protection creates a protective chemical environment that cushions against thermal decomposition during the high-temperature manufacturing process, ensuring the phase change material retains its temperature-regulating functionality after manufacturing.
Solution Approach 2:
The introduction of antioxidant changes the thermal decomposition parameters of the phase change material, shifting its decomposition temperature above the melt-spinning process temperature. This parameter change allows the material to survive the manufacturing process without decomposing, thus maintaining both ease of manufacture and product reliability.
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 in yarns and fabrics by reducing heat loss, ensuring 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 its decomposition temperature
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.