Bubbles and Collapses: Fire Phenomena of Polyurethane Foams

  • This work investigates the fire phenomena of rigid polyurethane foams (RPUFs) in detail. To elucidate structure-property relationships, systematically varied sets of materials were prepared covering polyurethane, polyisocyanurate-polyurethane and flame retarded polyurethane foams. Advanced cone calorimeter investigations provide insight into the fire behavior under forced flaming conditions. Thermocouples inside specimens give information about the temperature gradient during combustion. Furthermore, fire phenomena were characterized using cross sections of quenched samples and the scanning electron microscope. By using a Multi methodological approach and systematically varied sets of foam materials, new insights into the burning of RPUFs were won. For the flame retarded foams, the dominant flame retardant mode of action changed with density. PIR foams exhibited a cellular structure in the residue leading to the superior fire performance compared to polyurethane foams. TheThis work investigates the fire phenomena of rigid polyurethane foams (RPUFs) in detail. To elucidate structure-property relationships, systematically varied sets of materials were prepared covering polyurethane, polyisocyanurate-polyurethane and flame retarded polyurethane foams. Advanced cone calorimeter investigations provide insight into the fire behavior under forced flaming conditions. Thermocouples inside specimens give information about the temperature gradient during combustion. Furthermore, fire phenomena were characterized using cross sections of quenched samples and the scanning electron microscope. By using a Multi methodological approach and systematically varied sets of foam materials, new insights into the burning of RPUFs were won. For the flame retarded foams, the dominant flame retardant mode of action changed with density. PIR foams exhibited a cellular structure in the residue leading to the superior fire performance compared to polyurethane foams. The understanding of fire phenomena contributes to future development of tailored flame retardant strategies for RPUFs.zeige mehrzeige weniger

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Metadaten
Autor*innen:Martin Günther
Koautor*innen:A. Lorenzetti, Bernhard Schartel
Dokumenttyp:Vortrag
Veröffentlichungsform:Präsentation
Sprache:Englisch
Jahr der Erstveröffentlichung:2019
Organisationseinheit der BAM:7 Bauwerkssicherheit
7 Bauwerkssicherheit / 7.5 Technische Eigenschaften von Polymerwerkstoffen
DDC-Klassifikation:Technik, Medizin, angewandte Wissenschaften / Ingenieurwissenschaften / Ingenieurbau
Freie Schlagwörter:Fire behaviour; PU-Foam
Themenfelder/Aktivitätsfelder der BAM:Infrastruktur
Infrastruktur / Fire Science
Veranstaltung:AOFSM’3, 3rd Asia-Oceania Symposium for Fire Safety Materials Science and Engineering
Veranstaltungsort:Shanghai, China
Beginndatum der Veranstaltung:24.10.2019
Enddatum der Veranstaltung:27.10.2019
Verfügbarkeit des Dokuments:Datei im Netzwerk der BAM verfügbar ("Closed Access")
Datum der Freischaltung:31.10.2019
Referierte Publikation:Nein
Eingeladener Vortrag:Nein
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