In-depth rheological characterization of tungsten sol-gel inks for inkjet printing

Opara Krašovec, Urša (avtor), Vidmar, Tjaša (avtor), Klanjšek Gunde, Marta (avtor), Cerc Korošec, Romana (avtor), Slemenik Perše, Lidija (avtor)

The inkjet printing of the functional materials prepared by the sol-gel route is gaining the attention for the production of the variety of the applications not limited to the printed boards, displays, smart labels, smart packaging, sensors and solar cells. However, due to the gelation process associated with the changes from Newtonian to non-Newtonian fluid the inkjet printing of the sol-gel inks is extremely complex. In this study we reveal in-depth rheological characterization of the WO$_3$ sols in which we simulate the conditions of the inkjet printing process at different temperature of the cartridge (20–60 °C) by analyzing the structural and rheological changes taking place during the gelation of the tungsten oxide (WO$_3$) ink. The results provide the information on the stability of the sol and a better insight on the effects of the temperature on the gelation time. Moreover, the information on the temperature and the time window at which the inkjet printing of the sol-gel inks could be performed without clogging were obtained. The WO$_3$ ink was stable in a beaker and exhibited Newtonian flow behavior at room temperature over 3 weeks, while the gelation time decreased exponentially with increasing temperature down to 0.55 h at 60 °C.

• Jezik: Angleški jezik
• Ključne besede: rheology, inkjet printing, tungsten oxide, sol-gel
• Vrsta gradiva: Članek v reviji
• Tipologija: 1.01 - Izvirni znanstveni članek
• Organizacija: FE - Fakulteta za elektrotehniko; FKKT - Fakulteta za kemijo in kemijsko tehnologijo ; FS - Fakulteta za strojništvo
• Status publikacije: Objavljeno
• Različica publikacije: Objavljena publikacija
• Leto izida: 2022
• Št. strani: 15 str.
• Številčenje: Vol. 12, iss. 2, art. 112
• PID: 20.500.12556/RUL-137098
• UDK: 620.1/.2
• ISSN pri članku: 2079-6412
• DOI: 10.3390/coatings12020112
• COBISS.SI-ID: 96639491
• Datum objave v RUL: 01.06.2022

Gradivo je del revije

• Naslov: Coatings
• Skrajšan naslov: Coatings
• Založnik: MDPI AG
• ISSN: 2079-6412
• COBISS.SI-ID: 523035673

Licence

• Licenca: CC BY 4.0, Creative Commons Priznanje avtorstva 4.0 Mednarodna
• Povezava: http://creativecommons.org/licenses/by/4.0/deed.sl
• Opis: To je standardna licenca Creative Commons, ki daje uporabnikom največ možnosti za nadaljnjo uporabo dela, pri čemer morajo navesti avtorja.
• Začetek licenciranja: 01.02.2022

Sekundarni jezik

• Jezik: Slovenski jezik
• Ključne besede: materiali, sol-gel, newtonska tekočina, aplikacije