20.500.12556/RUL-188612 Storage stability and rheological aging of photocurable alumina suspensions for digital light processing 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. alumina rheology sedimentation instability index ceramic suspension DLP printing sintered density alumina reologija sedimentacija indeks nestabilnosti keramične suspenzije DLP tiskanje gostota sintranja true false true Angleški jezik Slovenski jezik Članek v reviji 2026-09-24 13:04:39 2026-09-24 13:04:41 2026-09-25 04:28:29 0000-00-00 00:00:00 2026 0 0 17 str. iss. 9, art. 99 Vol. 9 Sep. 2026 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 666.762.11 2571-6131 10.3390/ceramics9090099 290977027 RAZ_Sokola_Patrik_2026.pdf RAZ_Sokola_Patrik_2026.pdf 1 E32BC05193B8F63FF2AFF035C0D4333B 66c8e509a2dc77f679772fc2dbf86cd7048cbff43dc3082e9bb9332980169927 0dc02196-b808-11f1-8bc5-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=248898 https://www.mdpi.com/2571-6131/9/9/99 1 ac4354f4-b807-11f1-8bc5-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=248897 Fakulteta za kemijo in kemijsko tehnologijo 0 0 0