Repositorio
Institucional

Melendrez, Manuel Francisco

Diaz-Gomez, Andres

Godoy, Mytzy

Elizabeth Berrio, Maria

Ramirez, Jesus

Felipe Jaramillo, Andres

Medina, Carlos

Montano, Mary

Evaluation of the Mechanical and Fire Resistance Properties of Rigid Tannin Polyurethane Foams with Copper Oxide Nanoparticles

KOREAN FIBER SOC

FIBERS AND POLYMERS

en

In this study, a polymerized polyurethane foam was formulated from tannins extracted from Pinus radiata as polyol, and copper oxide nanoparticles (CuO-NPs) at a concentration of 2 % w/w as a nucleating agent. This produced a reinforced foam with better mechanical properties and fire resistance. The impact of the addition of CuO-NPs on the mechanical and thermal properties of the tannin foam was also studied. The properties studied were foaming process, foam density, cell morphology, flammability and thermal conductivity. The results revealed that the CuO-NPs incorporated in the foam formulation act as nucleation centers, which decrease the pore size, strengthen the cell walls, and improve mechanical properties. The tannin samples showed good thermal resistance performance with a limit oxygen index (LOI) higher than 21 %. The results obtained were contrasted with two foams, a commercial foam (SoudaFoam) and a foam generated with the same dissociate, but with a commercial polyol (LHT-112). The foam with NPs had an elastic modulus of 3.7 MPa and stress (max) of 1.13 MPa, which was higher than those of the foams used as controls.

artículo original

The authors would like to thank to the Interdisciplinary Group of Advanced Nanocomposites (Grupo Interdisciplinario de Nanocompuestos Avanzados, GINA) of the Department of Engineering Materials (DIMAT, according its Spanish acronym), Engineering School of the University of Concepcion, for its laboratory of nanospectroscopy (LAB-NANOSPECT). AFJ would like to thank the University of La Frontera. National Agency for Research and Development of Chile (ANID) by project: FONDEQUIP Project N degrees EQM150139, PIA/APOYO CCTE AFB170007, Fondef ID17I10333. MFM would like to thank Valentina Lamilla for her enormous support.

Los autores agradecen al Grupo Interdisciplinario de Nanocompuestos Avanzados (GINA) del Departamento de Ingeniería de Materiales (DIMAT) de la Facultad de Ingeniería de la Universidad de Concepción, por su laboratorio de nanoespectroscopia. (LAB-NANOSPECT). AFJ quisiera agradecer a la Universidad de La Frontera. Agencia Nacional de Investigación y Desarrollo de Chile (ANID) por proyecto: FONDEQUIP Proyecto N grados EQM150139, PIA/APOYO CCTE AFB170007, Fondef ID17I10333. MFM quisiera agradecer a Valentina Lamilla por su enorme apoyo.

10.1007/s12221-022-4152-x

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Tannin

Polyurethane foams

Fire resistant foam

Copper nanoparticles

Bio-based polyol

CONDENSED TANNINS

RADIATA BARK

OIL

CELLULOSE

COATINGS

Ciencia de Materiales

Textiles

Ciencia de los polímeros

Tanino

Espumas de poliuretano

Espuma resistente al fuego

Nanopartículas de cobre

Poliol de base biológica

TANINOS CONDENSADOS

CORTEZA DE RADIATA

ACEITE

CELULOSA

REVESTIMIENTOS

Evaluation of the Mechanical and Fire Resistance Properties of Rigid Tannin Polyurethane Foams with Copper Oxide Nanoparticles

1797

1806

artículo original

version publicada

0

restringido

restringido

ANID-FONDEQUIP EQM150139

ANID PIA/APOYO CCTE AFB170007

ANID-FONDEF 17I10333

ANID FONDEQUIP EQM150139

ANID FONDEF 17I10333

WOS:000834015400005