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Título:
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The effects of combining nanoclay and steel wires multi-scalar reinforcements on the structure and properties of polyurethane foams
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Autor/a:
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Cano, Álvaro; Antunes, Marcelo de Sousa Pais; Redondo Realinho, Vera Cristina de; Haurie Ibarra, Laia; Velasco Perero, José Ignacio
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Otros autores:
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Universitat Politècnica de Catalunya. Departament de Ciència dels Materials i Enginyeria Metal·lúrgica; Universitat Politècnica de Catalunya. Departament de Construccions Arquitectòniques II; Universitat Politècnica de Catalunya. POLYCOM - Polimers i compòsits: tecnologia; Universitat Politècnica de Catalunya. GICITED - Grup Interdiciplinari de Ciència i Tecnologia en l'Edificació |
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Abstract:
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In this paper we prepared and characterized several
polyurethane composite foams by combining variable
concentrations of organophilic clay (montmorillonite) and
metal reinforcement, with the objective of developing
novel multi-scalar multifunctional rigid foams. The
addition of montmorillonite clay promoted foaming and
the formation of finer and more homogeneous cellular
structures, resulting in foams with compressive elastic
moduli and collapse stresses lower than that of the
unfilled polyurethane foams. However, a comparative
analysis versus the foams’ relative density demonstrated
that both mechanical properties follow one single trend
for the two materials. The combination of montmorillonite
and metal reinforcement further reduced the cell size of
foams, ultimately resulting in foams with similar
mechanical properties for considerably lower relative
densities. Although no important differences in thermal
conductivity were found for the polyurethane foams with
adding montmorillonite, the incorporation of the metal
reinforcement led to considerably higher thermal
conductivities, its value increasing with increasing
relative density. |
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Materia(s):
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-Àrees temàtiques de la UPC::Enginyeria dels materials::Materials plàstics i polímers
-Polyurethanes--Testing
-Multi-scalar composites
-Multifunctional foams
-Polyurethane
-Poliuretans -- Proves
-Poliuretans -- Propietats tèrmiques |
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Derechos:
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Tipo de documento:
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Artículo - Versión publicada
Objeto de conferencia |
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