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Sinterpaper - a new type of highly porous material

Sinterpapier - Ein neuer Typ hochporösen Materials
: Stephani, G.; Böhm, H.-D.; Sorg, C.; Hofenauer, A.

Stephani, G.; Hipke, T.; Scheffler, M.; Adler, J. ; Deutsche Gesellschaft für Materialkunde e.V. -DGM-, Oberursel; Fraunhofer-Institut für Fertigungstechnik und Angewandte Materialforschung -IFAM-, Dresden; Fraunhofer-Institut für Werkzeugmaschinen und Umformtechnik -IWU-, Chemnitz:
International Conference on Cellular Materials, CellMat 2010. Proceedings : Held in Dresden, Germany from 27-29 Oct 2010
Dresden, 2010
International Conference on Cellular Materials (CellMat) <2010, Dresden>
Conference Paper
Fraunhofer IFAM, Institutsteil Pulvermetallurgie und Verbundwerkstoffe Dresden ()

A new technological approach for manufacturing of porous thin sheets the s. c. sinterpaper has been developed. The manufacturing consists of a combination of paper and sinter technology. Sinterpaper in the thickness range between 0.2 and 0.7 mm have been prepared, whereas the porosity level can reach up to 75 %. The pore size has a bimodal character, i.e. longish coarse pores of around 200 micron and small pores less than 20 micron. Investigations of the sinter temperature have shown a significant influence on the porosity as well as on the mechanical properties. The new technology for sinterpaper manufacturing has some advantages like materials flexibility, thin sheet manufacturing, simple shaping and after treatment (like plain paper), variation in length and width and tailoring of the pore size, pore size distribution and total porosity. The process can be up scaled and is characterized by low cost processing. Based on the advantages above numerous fields of potential applications can be selected. Filters for gases, liquids and particle should be one of the main fields of applications. Furthermore porous sinterpaper should be applied for thermal insulation, for electromagnetic shielding. Other interesting applications could be electrodes, heat exchanger (heat pipes), vaporizers and evaporators, catalyst substrates and light-weight structural components. Further investigations and activities are focused in the development of graded porous sinterpaper (membranes). Additional shaped products like corrugated sinterpaper, cardboard and tubes will be developed and tested.