Influence of silica aerogel particles on the foaming process and cellular structure of rigid polyurethane foams

Producción Científica

Detalles Bibliográficos
Autores: Cimavilla Román, Paula, Pérez Tamarit, Saul, Santiago Calvo, Mercerdes, Rodríguez Pérez, Miguel Ángel
Tipo de recurso: artículo
Estado:Versión aceptada para publicación
Fecha de publicación:2020
País:España
Institución:Universidad de Valladolid
Repositorio:UVaDOC. Repositorio Documental de la Universidad de Valladolid
OAI Identifier:oai:uvadoc.uva.es:10324/49209
Acceso en línea:https://doi.org/10.1016/j.eurpolymj.2020.109884
https://uvadoc.uva.es/handle/10324/49209
Access Level:acceso abierto
Palabra clave:Polyurethane foams
Espumas de poliuretano
Nanoporous silica aerogels
Aerogeles de sílice nanoporosa
Reaction kinetics
Cinética química
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spelling Influence of silica aerogel particles on the foaming process and cellular structure of rigid polyurethane foamsCimavilla Román, PaulaPérez Tamarit, SaulSantiago Calvo, MercerdesRodríguez Pérez, Miguel ÁngelPolyurethane foamsEspumas de poliuretanoNanoporous silica aerogelsAerogeles de sílice nanoporosaReaction kineticsCinética químicaProducción CientíficaWater blown rigid polyurethane (RPU) composite foams were produced using different concentrations of nanoporous silica aerogel micrometric powder (0.5, 1 and 3 wt%). The effect of these particles on the foaming kinetics was analysed from a physical and chemical viewpoint. On the physical side, the foaming process was studied by in-situ X-ray radioscopy. The inclusion of aerogel particles in the system delays the foam expansion and enhances the nucleation of cells. However, high amounts of these particles (3 wt%) lead to intense cell coalesce during foam evolution. On the chemical side, the reaction kinetics was investigated by in-situ FTIR spectroscopy and reaction temperature measurements. The addition of low contents of aerogel (below 3 wt%) reduces the conversion of isocyanate while favouring the generation of urethane groups, which explains the higher density of the foams with low aerogel contents. However, the foam with high contents of aerogel (3 wt%) does not change the reaction balance in comparison to the reference. Therefore, this foam presents similar expansion and density to those of the unfilled foam (Reference). Furthermore, higher reaction temperatures were reached by the reference foam during the foaming process, and higher dissipation speeds of these temperatures were detected for the foams containing aerogel with respect to those of the reference foam.Junta de Castilla y León (project VA275P18)Ministerio de Ciencia, Innovación y Universidades (project RTI2018-098749-B-I00)Elsevier2020info:eu-repo/semantics/articleinfo:eu-repo/semantics/acceptedVersionapplication/pdfhttps://doi.org/10.1016/j.eurpolymj.2020.109884https://uvadoc.uva.es/handle/10324/49209reponame:UVaDOC. Repositorio Documental de la Universidad de Valladolidinstname:Universidad de ValladolidIngléshttps://www.sciencedirect.com/science/article/pii/S0014305720315986?via%3Dihubinfo:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-nd/4.0/oai:uvadoc.uva.es:10324/492092026-06-13T12:44:47Z
dc.title.none.fl_str_mv Influence of silica aerogel particles on the foaming process and cellular structure of rigid polyurethane foams
title Influence of silica aerogel particles on the foaming process and cellular structure of rigid polyurethane foams
spellingShingle Influence of silica aerogel particles on the foaming process and cellular structure of rigid polyurethane foams
Cimavilla Román, Paula
Polyurethane foams
Espumas de poliuretano
Nanoporous silica aerogels
Aerogeles de sílice nanoporosa
Reaction kinetics
Cinética química
title_short Influence of silica aerogel particles on the foaming process and cellular structure of rigid polyurethane foams
title_full Influence of silica aerogel particles on the foaming process and cellular structure of rigid polyurethane foams
title_fullStr Influence of silica aerogel particles on the foaming process and cellular structure of rigid polyurethane foams
title_full_unstemmed Influence of silica aerogel particles on the foaming process and cellular structure of rigid polyurethane foams
title_sort Influence of silica aerogel particles on the foaming process and cellular structure of rigid polyurethane foams
dc.creator.none.fl_str_mv Cimavilla Román, Paula
Pérez Tamarit, Saul
Santiago Calvo, Mercerdes
Rodríguez Pérez, Miguel Ángel
author Cimavilla Román, Paula
author_facet Cimavilla Román, Paula
Pérez Tamarit, Saul
Santiago Calvo, Mercerdes
Rodríguez Pérez, Miguel Ángel
author_role author
author2 Pérez Tamarit, Saul
Santiago Calvo, Mercerdes
Rodríguez Pérez, Miguel Ángel
author2_role author
author
author
dc.subject.none.fl_str_mv Polyurethane foams
Espumas de poliuretano
Nanoporous silica aerogels
Aerogeles de sílice nanoporosa
Reaction kinetics
Cinética química
topic Polyurethane foams
Espumas de poliuretano
Nanoporous silica aerogels
Aerogeles de sílice nanoporosa
Reaction kinetics
Cinética química
description Producción Científica
publishDate 2020
dc.date.none.fl_str_mv 2020
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/acceptedVersion
format article
status_str acceptedVersion
dc.identifier.none.fl_str_mv https://doi.org/10.1016/j.eurpolymj.2020.109884
https://uvadoc.uva.es/handle/10324/49209
url https://doi.org/10.1016/j.eurpolymj.2020.109884
https://uvadoc.uva.es/handle/10324/49209
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv https://www.sciencedirect.com/science/article/pii/S0014305720315986?via%3Dihub
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by-nc-nd/4.0/
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by-nc-nd/4.0/
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:UVaDOC. Repositorio Documental de la Universidad de Valladolid
instname:Universidad de Valladolid
instname_str Universidad de Valladolid
reponame_str UVaDOC. Repositorio Documental de la Universidad de Valladolid
collection UVaDOC. Repositorio Documental de la Universidad de Valladolid
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,301603

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