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Mechanical and Surface-Chemical Properties of Polymer Derived Ceramic Replica Foams

Faculty of Nonmetallic Materials, Institute for Materials and Joining Technology, Otto-von-Guericke-University Magdeburg, Große Steinernetischstraße 6, 39104 Magdeburg, Germany
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Materials 2019, 12(11), 1870; https://doi.org/10.3390/ma12111870
Received: 21 May 2019 / Revised: 5 June 2019 / Accepted: 6 June 2019 / Published: 10 June 2019
(This article belongs to the Special Issue Advances in Functional Cellular Structures and Composites)
Polymer derived ceramic foams were prepared with the replica method using filler free and filler loaded polysiloxane containing slurries for the impregnation of open celled polyurethane foams. A significant change in mechanical strength, porosity and surface energy, i.e., wettability after thermal treatment between 130 °C (crosslinking) and 1000 °C (pyrolysis) in argon atmosphere was observed. While low-temperature pyrolyzed foams are elastic and hydrophobic, foams pyrolyzed at high temperatures are brittle and hydrophilic, and they possess higher compression strength. Changes of these properties were correlated with the polymer-to-ceramic transformation. View Full-Text
Keywords: ceramic foams; polymer derived ceramics; replica technique; mechanical properties ceramic foams; polymer derived ceramics; replica technique; mechanical properties
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MDPI and ACS Style

Schelm, K.; Abreu Morales, E.; Scheffler, M. Mechanical and Surface-Chemical Properties of Polymer Derived Ceramic Replica Foams. Materials 2019, 12, 1870.

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