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Dispersion and properties of zirconia suspensions for stereolithography
Author(s) -
Li Xingbang,
Zhong He,
Zhang Jingxian,
Duan Yusen,
Bai Hainan,
Li Jingjing,
Jiang Dongliang
Publication year - 2019
Publication title -
international journal of applied ceramic technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.4
H-Index - 57
eISSN - 1744-7402
pISSN - 1546-542X
DOI - 10.1111/ijac.13321
Subject(s) - stereolithography , materials science , dispersant , cubic zirconia , suspension (topology) , ceramic , wetting , dispersion (optics) , viscosity , slurry , composite material , rheology , fabrication , adsorption , chemical engineering , optics , organic chemistry , medicine , chemistry , physics , mathematics , alternative medicine , pathology , homotopy , pure mathematics , engineering
Stereolithography is an attractive technique for the fabrication of complex‐shaped ceramic components with high dimensional accuracy. One of the challenges in this technology is the development of high solid loading, low viscosity photosensitive ceramic suspension. In this study, the dispersion of zirconia in photocurable resin and the slurry properties were intensively investigated. Rheological measurements showed that DISPERBYK‐103 proved to be an effective dispersant. 42 vol% ZrO 2 suspension was successfully prepared using 3.5 wt% DISPERBYK‐103 as the dispersant, with a suitable viscosity (4.88 Pa·s) below the maximum allowable viscosity value (5 Pa·s) for stereolithography applications. The adsorption behavior of DISPERBYK‐103 on the surface of zirconia powders was characterized by TG and FT‐IR, confirming the dispersion effect of dispersant. Contact angle measurements were also conducted to show that the adsorption of DISPERBYK‐103 could help to improve the wettability between powder and photocurable resin. Results showed that DISPERBYK‐103 was effective for the preparation of suitable slurries for the development of ZrO 2 ceramics through stereolithography.