Improving the insulating capacity of polyurethane foams through polyurethane aerogel inclusion: From insulation to superinsulation

Producción Científica

Bibliographic Details
Authors: Merillas Valero, Beatriz, Villafañe González, Fernando, Rodríguez Pérez, Miguel Ángel
Format: article
Status:Published version
Publication Date:2022
Country:España
Institution:Universidad de Valladolid
Repository:UVaDOC. Repositorio Documental de la Universidad de Valladolid
OAI Identifier:oai:uvadoc.uva.es:10324/61898
Online Access:https://doi.org/10.3390/nano12132232
https://uvadoc.uva.es/handle/10324/61898
Access Level:Open access
Keyword:Polymers
Polyurethane foam
Espumas poliméricas de poliuretano - Propiedade mecánicas
Mechanical properties
Composite materials
Gels
Aerogel
Thermal insulation
Aislamiento térmico
Condensed matter
Física de la materia condensada
Chemistry
23 Química
2206.10 Polímeros
2211.02 Materiales Compuestos
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spelling Improving the insulating capacity of polyurethane foams through polyurethane aerogel inclusion: From insulation to superinsulationMerillas Valero, BeatrizVillafañe González, FernandoRodríguez Pérez, Miguel ÁngelPolymersPolyurethane foamEspumas poliméricas de poliuretano - Propiedade mecánicasMechanical propertiesComposite materialsGelsAerogelThermal insulationAislamiento térmicoCondensed matterFísica de la materia condensadaChemistry23 Química2206.10 Polímeros2211.02 Materiales CompuestosProducción CientíficaA novel synthesis of polyurethane foam/polyurethane aerogel (PUF–PUA) composites is presented. Three different polyurethane reticulated foams which present the same density but different pore sizes (named S for small, M for medium, and L for large) have been used. After the characterization of the reference materials (either, foams, and pure aerogel), the obtained composites have been characterized in order to study the effect of the foam pore size on the final properties, so that density, shrinkage, porous structure, mechanical properties, and thermal conductivity are determined. A clear influence of the pore size on the density and shrinkage was found, and the lowest densities are those obtained from L composites (123 kg/m3). Moreover, the aerogel density and shrinkage have been significantly reduced through the employment of the polyurethane (PU) foam skeleton. Due to the enhanced mechanical properties of polyurethane aerogels, the inclusion of polyurethane aerogel into the foam skeleton helps to increase the elastic modulus of the foams from 0.03 and 0.08 MPa to 0.85 MPa, while keeping great flexibility and recovery ratios. Moreover, the synthesized PUF–PUA composites show an excellent insulating performance, reducing the initial thermal conductivity values from 34.1, 40.3, and 50.6 mW/(m K) at 10 °C for the foams S, M, and L, to 15.8, 16.6, and 16.1 mW/(m K), respectively. Additionally, the effect of the different heat transfer mechanisms to the total thermal conductivity is herein analyzed by using a theoretical model as well as the influence of the measurement temperature.Ministerio de Ciencia, Innovación y Universidades - (grant FPU17/03299)Ministerio de Ciencia, Innovación y Universidades - (project RTI2018-098749-B-I00)Junta de Castilla y León y Ente Público Regional de la Energía de Castilla y León (EREN) - (Grant VA202P20)Junta de Castilla y León y Fondo Europeo de Desarrollo Regional (FEDER) - (grant CLU-2019-04)MDPI2022info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://doi.org/10.3390/nano12132232https://uvadoc.uva.es/handle/10324/61898reponame:UVaDOC. Repositorio Documental de la Universidad de Valladolidinstname:Universidad de ValladolidIngléshttps://www.mdpi.com/2079-4991/12/13/2232info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by/4.0/oai:uvadoc.uva.es:10324/618982026-06-13T12:44:47Z
dc.title.none.fl_str_mv Improving the insulating capacity of polyurethane foams through polyurethane aerogel inclusion: From insulation to superinsulation
title Improving the insulating capacity of polyurethane foams through polyurethane aerogel inclusion: From insulation to superinsulation
spellingShingle Improving the insulating capacity of polyurethane foams through polyurethane aerogel inclusion: From insulation to superinsulation
Merillas Valero, Beatriz
Polymers
Polyurethane foam
Espumas poliméricas de poliuretano - Propiedade mecánicas
Mechanical properties
Composite materials
Gels
Aerogel
Thermal insulation
Aislamiento térmico
Condensed matter
Física de la materia condensada
Chemistry
23 Química
2206.10 Polímeros
2211.02 Materiales Compuestos
title_short Improving the insulating capacity of polyurethane foams through polyurethane aerogel inclusion: From insulation to superinsulation
title_full Improving the insulating capacity of polyurethane foams through polyurethane aerogel inclusion: From insulation to superinsulation
title_fullStr Improving the insulating capacity of polyurethane foams through polyurethane aerogel inclusion: From insulation to superinsulation
title_full_unstemmed Improving the insulating capacity of polyurethane foams through polyurethane aerogel inclusion: From insulation to superinsulation
title_sort Improving the insulating capacity of polyurethane foams through polyurethane aerogel inclusion: From insulation to superinsulation
dc.creator.none.fl_str_mv Merillas Valero, Beatriz
Villafañe González, Fernando
Rodríguez Pérez, Miguel Ángel
author Merillas Valero, Beatriz
author_facet Merillas Valero, Beatriz
Villafañe González, Fernando
Rodríguez Pérez, Miguel Ángel
author_role author
author2 Villafañe González, Fernando
Rodríguez Pérez, Miguel Ángel
author2_role author
author
dc.subject.none.fl_str_mv Polymers
Polyurethane foam
Espumas poliméricas de poliuretano - Propiedade mecánicas
Mechanical properties
Composite materials
Gels
Aerogel
Thermal insulation
Aislamiento térmico
Condensed matter
Física de la materia condensada
Chemistry
23 Química
2206.10 Polímeros
2211.02 Materiales Compuestos
topic Polymers
Polyurethane foam
Espumas poliméricas de poliuretano - Propiedade mecánicas
Mechanical properties
Composite materials
Gels
Aerogel
Thermal insulation
Aislamiento térmico
Condensed matter
Física de la materia condensada
Chemistry
23 Química
2206.10 Polímeros
2211.02 Materiales Compuestos
description Producción Científica
publishDate 2022
dc.date.none.fl_str_mv 2022
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv https://doi.org/10.3390/nano12132232
https://uvadoc.uva.es/handle/10324/61898
url https://doi.org/10.3390/nano12132232
https://uvadoc.uva.es/handle/10324/61898
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv https://www.mdpi.com/2079-4991/12/13/2232
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by/4.0/
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by/4.0/
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv MDPI
publisher.none.fl_str_mv MDPI
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
_version_ 1869405306703839232
score 15,198674

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