An eco-friendly way to fire retardant flexible polyurethane foam: layer-by-layer assembly of fully bio-based substances

Wang, Xin; Pan, Ye-Tang; Wan, Yin Tao y Wang, De-Yi (2014). An eco-friendly way to fire retardant flexible polyurethane foam: layer-by-layer assembly of fully bio-based substances. "RSC Advances" (n. 86); pp. 46164-46169. ISSN 2046-2069. https://doi.org/10.1039/c4ra07972h.

Descripción

Título: An eco-friendly way to fire retardant flexible polyurethane foam: layer-by-layer assembly of fully bio-based substances
Autor/es:
  • Wang, Xin
  • Pan, Ye-Tang
  • Wan, Yin Tao
  • Wang, De-Yi
Tipo de Documento: Artículo
Título de Revista/Publicación: RSC Advances
Fecha: 2014
Materias:
Escuela: E.T.S.I. Caminos, Canales y Puertos (UPM)
Departamento: Otro
Licencias Creative Commons: Reconocimiento - Sin obra derivada - No comercial

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Resumen

The objective of the present study is to develop fully renewable and environmentally benign techniques for improving the fire safety of flexible polyurethane foams (PUFs). A multilayered coating made from cationic chitosan (CS) and anionic alginate (AL) was deposited on PUFs through layer-by-layer assembly. This coating system exhibits a slight influence on the thermal stability of PUF, but significantly improves the char formation during combustion. Cone calorimetry reveals that 10 CS-AL bilayers (only 5.7% of the foams weight) lead to a 66% and 11% reduction in peak heat release rate and total heat release, respectively, compared with those of the uncoated control. The notable decreased fire hazards of PUF are attributed to the CS-AL coatings being beneficial to form an insulating protective layer on the surface of burning materials that inhibits the oxygen and heat permeation and slows down the flammable gases in the vapor phase, and thereby improves the flame resistance. This water-based, environmentally benign natural coating will stimulate further efforts in improving fire safety for a variety of polymer substrates.

Más información

ID de Registro: 33090
Identificador DC: http://oa.upm.es/33090/
Identificador OAI: oai:oa.upm.es:33090
Identificador DOI: 10.1039/c4ra07972h
URL Oficial: http://pubs.rsc.org/en/content/articlelanding/2014/ra/c4ra07972h#!divAbstract
Depositado por: Memoria Investigacion
Depositado el: 22 Ene 2015 15:49
Ultima Modificación: 22 Ene 2015 15:49
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