Abstract
Laser welding of transparent and semi-transparent thermoplastics using layers of carbon nanotube (CNT) web as absorbant is reported. Single lap shear specimens were manufactured placing the layers of CNT-web between two polyethylene terephthalate glycol-modified (PETG) sheets, that were successively irradiated with laser power at a wavelength of 1064 nm. Optical analyses were performed to assess the transmittance of the joint under different configurations; for the single layer of CNT web a transmittance of 83 %, in the visible range, was obtained after welding. Single-lap shear tests were performed and a shear strength of 23 MPa was obtained when using one layer of CNT-web. The investigated technology allows using a solid film as laser absorbing material, replacing conventional liquid or dye that need to be processed and applied on the surface before welding, thus speeding up the manufacturing process.
| Original language | English |
|---|---|
| Article number | 108733 |
| Number of pages | 11 |
| Journal | Optics and Laser Technology |
| Volume | 157 |
| Early online date | 11 Oct 2022 |
| DOIs | |
| Publication status | Published - Jan 2023 |
Keywords
- Carbon nanotube web
- Glycol-modified polyethylene terephthalate
- Laser transmission welding
- Solid absorbing material
- Thermoplastic
- Transparent polymer
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Atomic and Molecular Physics, and Optics
- Electrical and Electronic Engineering
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Welding of thermoplastics by means of Carbon Nanotube Web
Russello, M. (Author), Catalanotti, G. (Supervisor), Hawkins, S. (Supervisor), Falzon, B. (Supervisor) & Chen, B. (Supervisor), Jul 2023Student thesis: Doctoral Thesis › Doctor of Philosophy
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