Thermochromic Industrial Fabric for Thermal Profile Monitoring
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Thermochromic materials are not suitable for industrial fabrics due to poor extrudability, reversibility of color at needed temperatures, survivability in harsh chemical and thermal environments, and limited changeability in visible wavelength and intensity, making it difficult to monitor thermal profiles effectively in industrial processes like papermaking.
Innovation Solution
Incorporating polythiophene as a reversible thermochromic polymer into industrial fabrics, either as monofilaments or coatings, which changes color with temperature, allowing for thermal profiling and process control by modifying the transition temperature through side chain length and orientation, and ensuring durability through extrusion into thermoplastic materials like polyethylene terephthalate.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If thermochromic materials are used in industrial fabrics, then thermal profile monitoring capability is improved, but extrudability and durability in harsh environments deteriorate
Solution Approach 1:
The patent uses an intermediary substance (thermochromic material) that is applied to the fabric surface rather than being integrated into the fabric structure itself. This allows the thermochromic material to perform its temperature-sensing function while the fabric structure maintains its mechanical integrity and durability in harsh industrial environments.
Solution Approach 2:
The thermochromic material is applied as a thin film or coating on the fabric surface. This thin film approach allows the material to respond to temperature changes while minimizing interference with the fabric's mechanical properties and durability in harsh environments.
2Illumination intensity
If thermochromic materials are incorporated into industrial fabrics, then color change visibility is improved, but reversibility at needed temperatures deteriorates
Solution Approach 1:
The patent selects and applies thermochromic materials with specific transition temperature parameters that match the industrial process requirements. By carefully choosing materials whose color change occurs at the desired temperature range, the system achieves both visible color change and appropriate reversibility for process monitoring.
3Measurement precision
If thermochromic materials are used for thermal profiling, then temperature monitoring capability is improved, but changeability in visible wavelength and intensity deteriorates
Solution Approach 1:
The patent applies different thermochromic materials to different regions or zones of the fabric, each material selected for its specific color change characteristics. This allows different parts of the fabric to monitor different temperature ranges or provide different visual signals, enhancing both measurement precision and adaptability.
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 industrial fabrics with polythiophene polymers act as active sensors, enabling effective monitoring of thermal profiles and non-uniformities, providing real-time process control and ensuring reversibility and rapid color changes, even under harsh conditions.
Implementation Method 1
Thermochromic materials are known to exhibit change in color due to change in temperature
Data Source
Figure 1
AI summary
The present invention is directed to endless belts and fabrics incorporating thermochromic material such as polythiophene for use as a process control aid which can be used in thermal profiling of industrial thermal process, the industrial fabrics used in such a process, the manufacture of the industrial fabrics thereof and/or the products produced or carried thereon.