Abstract
The remarkable electrical, electromagnetic shielding, and mechanical characteristics of carbon nanotubes (CNTs) are widely recognized. Extensive research has been undertaken to extend these exceptional properties from the nanoscale to the microscale by producing thin layers of CNTs, often referred to as buckypapers. Presently, efforts are directed towards upscaling these properties through the creation of three-dimensional objects utilizing a technique known as selective layer deposition which is a variation of the known additive lamination technique. Initially, buckypapers were manufactured by employing a new hybrid fabrication method which combines both vacuum filtration and tape casting methods. This method enabled the large scaling of the buckypapers to tens of centimeters. Subsequently, the produced buckypapers underwent microstructural analysis as well as electrical and mechanical testing to determine their characteristics respectively. Dog-bone-shaped 3D samples were created by manually stacking individual buckypaper sheets, and a Clean Green CG-1 3D printer was utilized to automatically produce discs, for electrical and electromagnetic interference shielding, and dog-bone samples for mechanical testing, respectively. During electrical and electromagnetic shielding testing, the highest recorded values were 2500 S/m for electrical conductivity for 3 layers of 3D printed buckypaper disc and 97 dB for electromagnetic interference shielding for 3D printed buckypaper disc of 5 layers.Nevertheless, electrical conductivity values exhibited a gradual decrease as the number of buckypaper layers increased. However, with the stacking of more buckypaper layers, electromagnetic shielding improved, indicating potential applications in weight-sensitive applications like in aircrafts, where electromagnetic shielding components are crucial.
| Date of Award | 19 Jul 2024 |
|---|---|
| Original language | American English |
| Supervisor | Rashid Abu Al Rub (Supervisor) |
Keywords
- Carbon Nano-structures
- Selective Deposition Layering (SDL)
- 3D Printing
- Rapid Prototyping
- Additive Manufacturing
- Lamination Object Manufacturing (LOM)
- Electromagnetic interference Shielding
- Buckypaper