Dielectric spectroscopy of PETG/TiO2 composite intended for 3D printing
| Autor: | Petr Veselý, Denis Froš, Tomáš Hudec, Josef Sedláček, Pavel Ctibor, Karel Dušek |
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| Jazyk: | angličtina |
| Rok vydání: | 2023 |
| Předmět: | |
| Zdroj: | Virtual and Physical Prototyping, Vol 18, Iss 1 (2023) |
| Druh dokumentu: | article |
| ISSN: | 1745-2759 1745-2767 17452759 |
| DOI: | 10.1080/17452759.2023.2170253 |
| Popis: | 3D-printed electronics belong to new approaches to how to build a complex object with multiple desired functions. For that purpose, materials with specific electric properties are needed: conductors, insulators, magnetics, or dielectrics with high permittivity. However, such materials are not commonly available in the form of filament for fused deposition modelling since the development is still ongoing. This paper describes the electrical properties of PETG-ceramic composite filaments. PETG (polyethylene terephthalate glycol-modified) was filled with titanium dioxide (10 and 20 wt.%) to increase the dielectric constant and, simultaneously, to preserve printing simplicity as the material key advantage. Dielectric spectroscopy and measurement of volume resistivity were performed on printed samples. Relative permittivity increased by 50% for a composite filled with 20 wt.% of ceramic particles (ϵr = 2.5÷4.4) against pure PETG. Permittivity and dielectric loss exhibited frequency and temperature independence. The prepared composite can be used for dielectric applications in electronics. |
| Databáze: | Directory of Open Access Journals |
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