The authors acknowledge the financial support from the German Research Foundation (DFG) within the Cluster of Excellence “Engineering of Advanced Materials” at the University Erlangen-Nürnberg.
Extrusion Foaming of a Preceramic Silicone Resin with a Variety of Profiles and Morphologies†
Article first published online: 18 MAY 2012
Copyright © 2012 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
Advanced Engineering Materials
Special Issue: Highly Porous Metals and Ceramics
Volume 14, Issue 12, pages 1110–1115, December 2012
How to Cite
Wolff, F., Ceron Nicolat, B., Fey, T., Greil, P. and Münstedt, H. (2012), Extrusion Foaming of a Preceramic Silicone Resin with a Variety of Profiles and Morphologies. Adv. Eng. Mater., 14: 1110–1115. doi: 10.1002/adem.201100351
- Issue published online: 6 DEC 2012
- Article first published online: 18 MAY 2012
- Manuscript Revised: 17 APR 2012
- Manuscript Received: 22 DEC 2011
- German Research Foundation (DFG)
Preceramic foams with a variety of profiles and morphologies were fabricated by a continuous foam extrusion process based on a single-screw extruder. A methyl silicone resin was used as the preceramic polymer and carbon dioxide as the foaming agent. Variations of the foam morphology were achieved by changing the key process parameters carbon dioxide content, foaming pressure, and foaming temperature. Samples of different porosities, cell densities, pore sizes, and pore size gradients were obtained. From these results, conditions for the fabrication of particular foam structures can be derived. Various foam profiles as rods, tapes, and tubes were extruded and pyrolysed into ceramic foams.