Tape casting using UV curable binders

doi:10.1016/S0955-2219(96)00137-9

Journal of the European Ceramic Society

Volume 17, Issue 6, 1997, Pages 765-771

https://doi.org/10.1016/S0955-2219(96)00137-9 Get rights and content

Abstract

High-density tapes were obtained by tape casting of a slurry composed of alumina powder, dispersant, UV curable binder and photoinitiator, and by subsequent photopolymerization. The use of a photopolymerizable binder offers the advantage of eliminating the drying stage, which is a critical step of the tape casting process. The effects of the solid loading, of the dispersant and photoinitiator concentrations and of the temperature on the rheological behaviour of the slurries were investigated. Both addition of dispersant and photoinitiator had a positive effect on the rheology of the slurries. The highly loaded alumina suspensions (82 wt%, i.e. 57 vol%) exhibited a shear-thickening behaviour, which was not detrimental in this solvent-free process because of the possibility of hardening the sheet instantly, by polymerization, just after casting. Nearly theoretical densities (98.9%) were obtained after sintering at 1540 °C of the irradiated alumina tapes.

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Citation Excerpt :
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Tape casting using UV curable binders

Abstract

J. Eur. Ceram. Soc.

J. Eur. Ceram. Soc.

Tape casting of ceramics

Doctor blade processs

Tape casting

Potential use of polymerizable solvents and dispersants for tape casting of ceramics

Am. Ceram. Soc. Bull.

Tape casting slip preparation by in-situ polymerization

J. Am. Ceram. Soc.