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Additive Manufacturing of Stretchable Multi-Walled Carbon Nanotubes/Thermoplastic Polyurethanes Conducting Polymers
Fuxi Liu1,2, Dezhi Bai1, Deqiao Xie3
1Department of Mechanical Manufacturing and Automation, College of Mechanical and Electrical Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing, China.
3D Printing and Additive Manufacturing
|September 9, 2024
Summary
Researchers developed a flexible sensor using multi-walled carbon nanotubes (MWCNTs) and thermoplastic polyurethane (TPU) via 3D printing. This rapid fabrication method yields high-performance sensors for body monitoring and gesture recognition.
Area of Science:
- Materials Science
- Additive Manufacturing
- Sensor Technology
Background:
- Flexible sensors are crucial for advanced body monitoring applications.
- Rapid prototyping is essential for developing high-performance flexible sensors.
Purpose of the Study:
- To develop a flexible resin incorporating multi-walled carbon nanotubes (MWCNTs) for rapid fabrication of flexible sensors.
- To utilize digital light processing additive manufacturing for creating these sensors.
Main Methods:
- Multi-walled carbon nanotubes (MWCNTs) were dispersed in a thermoplastic polyurethane (TPU) photosensitive resin to create polymer-matrix composites.
- A flexible strain sensor was fabricated using custom additive manufacturing equipment.
Main Results:
- The 1.2 wt% MWCNTs/TPU composite sensor exhibited a high gauge factor (9.988) with linearity up to 45% strain.
- The sensor demonstrated excellent mechanical durability over 1000 cycles.
- The fabricated sensor showed effective performance in gesture recognition and monitoring applications.
Conclusions:
- This study presents a novel method for the rapid, personalized fabrication of high-performance flexible sensors.
- The developed MWCNT/TPU composite resin and additive manufacturing approach offer a promising pathway for advanced wearable electronics.
