Temperature-Responsive Composite Fibers for Adaptive Textile Ventilation
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Solution Overview
Problem
Traditional garments are designed for single environments and use-cases, lacking adaptability to changing temperatures and activities, requiring additional layers or clothing changes to accommodate varying conditions.
Innovation Solution
Development of active textiles with composite fibers and knit structures that undergo bi-directional transformations based on temperature changes, allowing for zonal control and precise design of material properties to enhance ventilation and breathability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If traditional garments are designed for single environments, then the garment structure is simple and easy to manufacture, but the adaptability to different environments is poor
Solution Approach 1:
The patent applies dynamics by making the knit fabric structure changeable through temperature-responsive fibers. The fibers automatically adjust the fabric's physical state (open/closed loops, pore size) in response to temperature changes, enabling the garment to dynamically adapt its ventilation and breathability without electronic components or complex mechanical systems.
Solution Approach 2:
The patent utilizes parameter changes by incorporating fibers whose physical properties change with temperature. These fibers alter their shape, volume, or arrangement based on thermal conditions, which in turn modifies the knit fabric's porosity, air permeability, and thermal insulation properties, allowing the garment to respond to different environmental temperatures.
2Adaptability or versatility
If additional layers or jackets are added to accommodate temperature changes, then the adaptability improves, but the weight and complexity of the garment system increases
Solution Approach 1:
The patent applies universality by designing a single knit fabric that performs multiple functions: thermal insulation, ventilation, and temperature regulation. The temperature-responsive fibers enable the same fabric structure to provide warmth in cold conditions and breathability in hot conditions, eliminating the need for separate layers or jackets for different temperatures.
Solution Approach 2:
The dynamic response of the temperature-responsive fibers allows the fabric to automatically adjust its insulating and ventilating properties based on ambient temperature, providing the functionality of multiple garments through a single adaptive structure without adding weight or complexity.
3Adaptability or versatility
If static ventilation and breathability are used in garments, then the manufacturing process is simple, but the garment cannot respond to changes in ambient or body temperature
Solution Approach 1:
The patent incorporates fibers that undergo parameter changes in response to temperature variations. These fibers alter their physical configuration (such as curling, expanding, or contracting) based on thermal conditions, which automatically adjusts the knit fabric's ventilation and breathability properties during the garment's use without requiring complex manufacturing processes.
Solution Approach 2:
The temperature-responsive fibers provide self-service by automatically adjusting the fabric's properties in response to temperature changes without external control systems. The fibers' inherent thermal response characteristics enable the garment to self-regulate its ventilation and breathability, eliminating the need for electronic sensors, actuators, or complex control mechanisms.
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
Enables garments to autonomously adapt to environmental conditions, providing improved comfort and functionality across multiple environments and activities without the need for additional layers or electronic components, extending the usability of traditional textile manufacturing processes.
Implementation Method 1
The first and second polymers can have linear coefficients of thermal expansion that differ from 1×10−5/° C. to 20×10−5/° C. at room temperature, preferably from 5×10−5/° C. to 15×10−5/° C. at room temperature. The first and second polymers can have linear coefficients of thermal expansion that differ by at least 1×10−5/° C. at room temperature, preferably by at least 5×10−5/° C. at room temperature, even more preferably by at least 1×10−5/° C. at room temperature.
Implementation Method 2
The first polymer can absorb more infrared radiation than the second polymer.
Data Source
AI summary
Knit textile structures are formed of a yarn made of composite fibers, which is an active material within the knit structure that transforms in response to a change in temperature. In combination with non-active fibers and performative knit structure, this contraction can enable changes in the fabric that are adaptive to changes in environmental conditions during wear.