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Pyrolisis of polyurethane by microwave hybrid heating for the processing of NiCr foams

Titelangaben

Wu, Kangjian ; Park, Ho-Seon ; Willert-Porada, Monika:
Pyrolisis of polyurethane by microwave hybrid heating for the processing of NiCr foams.
In: Journal of Materials Processing Technology. Bd. 212 (Juli 2012) Heft 7 . - S. 1481-1487.
ISSN 0924-0136
DOI: https://doi.org/10.1016/j.jmatprotec.2012.02.010

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Link zum Volltext (externe URL): Volltext

Abstract

Reticulated polyurethane foams are often used as templates for the processing of metal and ceramic foams, since polyurethane foams with a high homogeneity and uniformity of pores and a wide variety of porosities and pore sizes are commercially available. Current conventional methods to pyrolyse polyurethane have brought attention to issues such as long processing time, high costs and high contents of carbon residue. Microwave hybrid heating, as a new pyrolysis method, has been investigated in this research to overcome these issues. Two microwave hybrid and one conventional heating process as comparison were performed to pyrolyse binder and polyurethane for the processing of NiCr8020 foams, which were fabricated by dip-coating method in a powder metallurgical route. Compared to the conventional process, the processing time and residual carbon content of the pyrolysed and pre-sintered foams can be reduced significantly by utilizing microwave hybrid heating techniques, whereas the stability of microwave hybrid heating must be improved and a compromise must be made between the heating rate and the residual carbon content due to the formation of burst holes during the rapid decomposition of polyurethane.

Weitere Angaben

Publikationsform: Artikel in einer Zeitschrift
Begutachteter Beitrag: Ja
Keywords: Metal foam; Polyurethane; Pyrolysis; Microwave
Institutionen der Universität: Fakultäten > Fakultät für Ingenieurwissenschaften
Fakultäten > Fakultät für Ingenieurwissenschaften > Lehrstuhl Werkstoffverarbeitung
Fakultäten > Fakultät für Ingenieurwissenschaften > Ehemalige Professoren > Lehrstuhl Werkstoffverarbeitung - Univ.-Prof. Dr. Monika Willert-Porada
Forschungseinrichtungen > Forschungsstellen > ZET - Zentrum für Energietechnik
Fakultäten
Forschungseinrichtungen
Forschungseinrichtungen > Forschungsstellen
Fakultäten > Fakultät für Ingenieurwissenschaften > Ehemalige Professoren
Titel an der UBT entstanden: Ja
Themengebiete aus DDC: 500 Naturwissenschaften und Mathematik > 500 Naturwissenschaften
600 Technik, Medizin, angewandte Wissenschaften > 620 Ingenieurwissenschaften
Eingestellt am: 04 Mai 2015 14:20
Letzte Änderung: 05 Mai 2015 14:04
URI: https://eref.uni-bayreuth.de/id/eprint/11504