Journal
JOURNAL OF MEMBRANE SCIENCE
Volume 643, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.memsci.2021.120066
Keywords
Ceramic membrane; DLP 3D printing; Suspension; Viscosity; UV curable
Categories
Funding
- National Natural Science Foundation of China [21921006, 21808107]
- National Key Research and Development Program of China [2020YFB0704502]
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A novel method for fabricating ceramic membranes using DLP 3D printing was proposed, optimizing the UV-curable alumina suspension for low viscosity. The effects of sintering process on microstructures, mechanical strength, and permeability were studied, resulting in high quality ceramic membranes with promising prospects for application.
Herein a novel method was proposed for the fabrication of ceramic membranes by digital light processing (DLP) three-dimensional (3D) printing. The UV-curable alumina suspension was optimized by tuning the solid content, grading ratio, and temperature to achieve low viscosity. The Krieger-Dougherty model and the Vogel-FulcherTammann equation were employed to describe and predict the changing trends of viscosity. The effects of the sintering process on the microstructures, mechanical strength, and permeability of the ceramic membranes were also studied. Under the optimized conditions, ceramic membranes were obtained with uniform pore size distribution, high porosity of 42.6%, an average pore size of 0.9 mu m, and a pure water flux of 2.66 m3 m-2 h-1 bar-1. Therefore, DLP 3D printing demonstrates good prospects for application in the fabrication of ceramic membranes.
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