Fire Behaviour and Viscoelasticity of Sustainable Thermoplastic Polyurethane Multicomponent Systems

  • Main message: An interesting influence of viscoelastic properties on fire behavior of multicomponent systems based on thermoplastic polyurethane using industrial-waste leather fibers was observed. A detailed investigation on rheological properties, morphology, pyrolysis, flammability and forced flaming combustion highlighted that fire retardancy is best achieved when the multicomponent systems exhibit a predominant elastic behavior. Introduction: Multicomponent systems represent a sustainable alternative to traditional high-loaded flame retardant polymer materials, particularly in local areas where industrial-waste fibers are a problem.The final properties of those systems greatly depend on the melt blending process [1-2]. In this work,thermoplastic polyurethane multicomponent systems using industrial-waste leather fibers and a commercial flame-retardant additive were produced and investigated. Results and Discussion: According to rheological measurements, the viscoelastic behaviorMain message: An interesting influence of viscoelastic properties on fire behavior of multicomponent systems based on thermoplastic polyurethane using industrial-waste leather fibers was observed. A detailed investigation on rheological properties, morphology, pyrolysis, flammability and forced flaming combustion highlighted that fire retardancy is best achieved when the multicomponent systems exhibit a predominant elastic behavior. Introduction: Multicomponent systems represent a sustainable alternative to traditional high-loaded flame retardant polymer materials, particularly in local areas where industrial-waste fibers are a problem.The final properties of those systems greatly depend on the melt blending process [1-2]. In this work,thermoplastic polyurethane multicomponent systems using industrial-waste leather fibers and a commercial flame-retardant additive were produced and investigated. Results and Discussion: According to rheological measurements, the viscoelastic behavior of the TPU multicomponent systems depends on the melt blending process conditions. Systems produced under low blending temperature profile and high rotational speed (TPU/5LF/5APP_T1/V3) display a predominant viscous behavior, meanwhile TPU/5LF/5APP_T1/V1 and TPU/5LF/5APP_T2/V2 samples, exhibit a more elastic one. The combination of LF and APP at low loadings (5 phr each) results in an important reduction on the peak of heat release rate (pHRR), total heat evolved (THE) and total smoke production (TSP) regarding to pure TPU. The UL94 vertical test pointed out that multicomponent systems with predominant elastic behavior (TPU/5LF/5APP_T1/V1 and TPU/5LF/5APP_T2/V2 samples) reached the V-0 rating, meanwhile for the system with the most viscous tendency (TPU/5LF/5APP_T1/V3), non-rating is obtained. Acknowledgement: Part of this work was funded by the Consejo Nacional de Humanidades Ciencias y Tecnologías (CONAHCYT), Mexico, grant number CF-2023-I-865.zeige mehrzeige weniger

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Metadaten
Autor*innen:G. Sanchez-Olivares
Koautor*innen:S.T.G. Zacariaz Martínez, F. Calderas, Sven BrehmeORCiD, Bernhard SchartelORCiD
Dokumenttyp:Posterpräsentation
Veröffentlichungsform:Präsentation
Sprache:Englisch
Jahr der Erstveröffentlichung:2025
Organisationseinheit der BAM:7 Bauwerkssicherheit
7 Bauwerkssicherheit / 7.5 Technische Eigenschaften von Polymerwerkstoffen
DDC-Klassifikation:Technik, Medizin, angewandte Wissenschaften / Ingenieurwissenschaften / Ingenieurbau
Freie Schlagwörter:Fire behavior; Industrial wastes; Leather fibers; TPU; Viscoelastic properties
Themenfelder/Aktivitätsfelder der BAM:Infrastruktur
Infrastruktur / Fire Science
Veranstaltung:20th European Meeting on Fire Retardant Polymeric Materials (FRPM2025)
Veranstaltungsort:Madrid, Spain
Beginndatum der Veranstaltung:03.06.2025
Enddatum der Veranstaltung:06.06.2025
Verfügbarkeit des Dokuments:Datei im Netzwerk der BAM verfügbar ("Closed Access")
Datum der Freischaltung:17.06.2025
Referierte Publikation:Nein
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