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Manufacturing of tubular dead-end membranes by continuous thermoplastic extrusion

  • Salehi, Mehdi Laboratory for High Performance Ceramics, Empa, Swiss Federal Laboratories for Materials Science and Technology, Duebendorf, Switzerland - The Fribourg Center for Nanomaterials (FriMat), Department of Geosciences, University of Fribourg, Switzerland
  • Pfaff, Ewald M. Institute for Materials Applications in Mechanical Engineering, RWTH Aachen University, Germany
  • Kaletsch, Anke Institute for Materials Applications in Mechanical Engineering, RWTH Aachen University, Germany
  • Graule, Thomas Laboratory for High Performance Ceramics, Empa, Swiss Federal Laboratories for Materials Science and Technology, Duebendorf, Switzerland
  • Clemens, Frank Laboratory for High Performance Ceramics, Empa, Swiss Federal Laboratories for Materials Science and Technology, Duebendorf, Switzerland
  • Grobéty, Bernard The Fribourg Center for Nanomaterials (FriMat), Department of Geosciences, University of Fribourg, Switzerland
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    01.05.2015
Published in:
  • International Journal of Applied Ceramic Technology. - 2015, vol. 12, p. E13–E18
English Dense and gastight dead-end tubular Ba0.5Sr0.5Co0.8Fe0.2O3-δ (BSCF) membranes were fabricated by thermoplastic extrusion. Optimal feedstocks for the extrusion of dead-end tubular structures were obtained for a feedstock consisting of 89.83 wt% BSCF powder, 5.63 wt% ethylene vinyl acetate (EVA), 3.56 wt% paraffin wax (PW), and 0.98 wt% stearic acid (SA). Thermogravimetric analysis (TGA) was used to determine the thermal characteristics of the feedstock and to characterize the amount of binder removed during the wicking step. Straight and round dead-end tubular membranes with wall thickness of 0.5 mm could be achieved after sintering. The gastightness test showed that the membranes were leak-tight up to a pressure of 35 bar.
Faculty
Faculté des sciences et de médecine
Department
Département de Géosciences
Language
  • English
Classification
Mechanical engineering in general, nuclear technology
License
License undefined
Identifiers
Persistent URL
https://folia.unifr.ch/unifr/documents/304497
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