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Processing of Organic/Inorganic Composites by Stereolithography

Published online by Cambridge University Press:  10 February 2011

J. H. Lee ,
R. K. Prud'homme  and
I. A. Aksay
J. H. Lee
Affiliation:
Department of Chemical Engineering and Princeton Materials Institute, Princeton University, Princeton, NJ 08544
R. K. Prud'homme
Affiliation:
Department of Chemical Engineering and Princeton Materials Institute, Princeton University, Princeton, NJ 08544
I. A. Aksay
Affiliation:
Department of Chemical Engineering and Princeton Materials Institute, Princeton University, Princeton, NJ 08544
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Abstract

Ceramic StereoLithography (CSL) is used to fabricate complex shaped ceramic powder compacts by laser photocuring a concentrated ceramic dispersion in photocuring solutions layer-by-layer. The main processing parameters in CSL such as layer thickness, resolution, hatch spacing, and overcure depend on knowledge of the light propagation in a concentrated dispersion. In studies dealing with the processing of ceramic-filled organics, we investigated the depth of curing for model resin systems as a function of photoinitiator concentration. An optimal photoinitiator concentration that maximized the gel cure depth was observed The study showed that photoinitiator plays a significant role in controlling the quality and performance of the formed gel network, with special regard to thickness of cured layers. This has potential application to fields as diverse as industrially cured coatings and dental fillings, and more generally, 3-dimensional fabrication techniques.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 625: Symposium Y – Solid Freeform & Additive Fabrication – 2000 , 2000 , 165
Copyright
Copyright © Materials Research Society 2000

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