Detail publikačního výsledku

Storage Stability and Rheological Aging of Photocurable Alumina Suspensions for Digital Light Processing

SOKOLA, P.; POLÍVKA, B.; ŠVEC, J.; MENČÍK, P.; SKALAR, T.; MARINŠEK, M.; SEDLAČÍK, M.; BŘEZINA, M.; MARKUSÍK, D.; PTÁČEK, P.

Originální název

Storage Stability and Rheological Aging of Photocurable Alumina Suspensions for Digital Light Processing

Anglický název

Storage Stability and Rheological Aging of Photocurable Alumina Suspensions for Digital Light Processing

Druh

Článek WoS

Originální abstrakt

The long-term storage stability of photocurable alumina suspensions is a critical factor in Digital Light Processing (DLP), yet conventional sedimentation tests provide only limited information about future changes in suspension behavior. This work evaluates analytical centrifugation (LUMiSizer) as a rapid tool for assessing the stability of alumina suspensions stabilized with Disperbyk-103 and Disperbyk-111 dispersants. Rheological measurements, aging tests, and characterization of sintered specimens showed that suspensions with lower instability indices exhibited significantly smaller changes during storage and yielded more reproducible properties after sintering. In particular, the Disperbyk-111 system remained largely unchanged after 20 days of storage, whereas the Disperbyk-103 suspension underwent pronounced rheological aging accompanied by lower density and greater shrinkage after sintering. The results indicate that the instability index obtained by analytical centrifugation provides a useful screening indicator of suspension stability during storage and may serve as a practical tool for selecting dispersant formulations for DLP-based ceramic processing.

Anglický abstrakt

The long-term storage stability of photocurable alumina suspensions is a critical factor in Digital Light Processing (DLP), yet conventional sedimentation tests provide only limited information about future changes in suspension behavior. This work evaluates analytical centrifugation (LUMiSizer) as a rapid tool for assessing the stability of alumina suspensions stabilized with Disperbyk-103 and Disperbyk-111 dispersants. Rheological measurements, aging tests, and characterization of sintered specimens showed that suspensions with lower instability indices exhibited significantly smaller changes during storage and yielded more reproducible properties after sintering. In particular, the Disperbyk-111 system remained largely unchanged after 20 days of storage, whereas the Disperbyk-103 suspension underwent pronounced rheological aging accompanied by lower density and greater shrinkage after sintering. The results indicate that the instability index obtained by analytical centrifugation provides a useful screening indicator of suspension stability during storage and may serve as a practical tool for selecting dispersant formulations for DLP-based ceramic processing.

Klíčová slova

alumina; rheology; sedimentation; instability index; ceramic suspensions; DLP printing; sintered density

Klíčová slova v angličtině

alumina; rheology; sedimentation; instability index; ceramic suspensions; DLP printing; sintered density

Autoři

SOKOLA, P.; POLÍVKA, B.; ŠVEC, J.; MENČÍK, P.; SKALAR, T.; MARINŠEK, M.; SEDLAČÍK, M.; BŘEZINA, M.; MARKUSÍK, D.; PTÁČEK, P.

Vydáno

12.09.2026

Nakladatel

MDPI

Periodikum

Ceramics-Switzerland

Svazek

9

Číslo

9

Stát

Švýcarská konfederace

Strany počet

17

URL

https://doi.org/10.3390/ceramics9090099

BibTex

@article{BUT212749,
  author="Patrik {Sokola} and Benedikt Tobiáš {Polívka} and Jiří {Švec} and Přemysl {Menčík} and Tina {Skalar} and Marjan {Marinšek} and Martin {Sedlačík} and Matěj {Březina} and David {Markusík} and Petr {Ptáček}",
  title="Storage Stability and Rheological Aging of Photocurable Alumina Suspensions for Digital Light Processing",
  journal="Ceramics-Switzerland",
  year="2026",
  volume="9",
  number="9",
  pages="17",
  doi="10.3390/ceramics9090099",
  issn="2571-6131",
  url="https://doi.org/10.3390/ceramics9090099"
}