Rheological and phase behaviour of paraffin wax/bitumen blends with thermal storage characteristics

This paper analyses the thermomechanical properties, heat storage characteristics and compatibility of bitumen blends with a paraffin wax, having a melting point around 60 ◦C, as phase change material. To that end, temperature sweeps in the linear viscoelastic range, technological properties, Modula...

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Detalles Bibliográficos
Autores: Gutiérrez Blandón, Coraima, Cuadri Vega, Antonio Abad, Tenorio Alfonso, Adrián, Partal López, Pedro, Navarro Domínguez, Francisco Javier
Tipo de recurso: artículo
Fecha de publicación:2023
País:España
Institución:Universidad de Huelva (UHU)
Repositorio:Arias Montano. Repositorio Institucional de la Universidad de Huelva
Idioma:inglés
OAI Identifier:oai:ariasmontano.uhu.es:10272/22452
Acceso en línea:https://hdl.handle.net/10272/22452
Access Level:acceso abierto
Palabra clave:Bitumen
Paraffin wax
Phase change material
Rheology
DSC
Thermal storage
3303 Ingeniería y Tecnología Químicas
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spelling Rheological and phase behaviour of paraffin wax/bitumen blends with thermal storage characteristicsGutiérrez Blandón, CoraimaCuadri Vega, Antonio AbadTenorio Alfonso, AdriánPartal López, PedroNavarro Domínguez, Francisco JavierBitumenParaffin waxPhase change materialRheologyDSCThermal storage3303 Ingeniería y Tecnología QuímicasThis paper analyses the thermomechanical properties, heat storage characteristics and compatibility of bitumen blends with a paraffin wax, having a melting point around 60 ◦C, as phase change material. To that end, temperature sweeps in the linear viscoelastic range, technological properties, Modulated Differential Scanning Calorimetry (MDSC), and cross-polarised optical microscopy observations were carried out on blends and pure compounds. The obtained results reveal a partial compatibility between the compounds and the development of a multiphasic microstructure, where the paraffin-rich or bitumen-rich domains form the continuous phase depending on the concentration, with the phase inversion around 20 wt% wax. Below this threshold concentration, the disperse paraffin-rich phase acts as filler that reinforces the continuous bitumen matrix until it reaches the melting transition. Above the critical concentration for the phase inversion, the continuous paraffin- rich phase controls the rheological response. However, both phases retain their own identity and show their individual transitions and relaxations. Despite the partial compatibility, a high degree of crystallinity is found, especially for high paraffin contents, which would result in a significant capacity to store thermal energy, for applications such as solar thermal collection or thermoregulation materials for buildings, etc.Elsevier20232023-08-1620232023-08-16journal articlehttp://purl.org/coar/resource_type/c_6501VoRhttp://purl.org/coar/version/c_970fb48d4fbd8a85info:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/10272/22452reponame:Arias Montano. Repositorio Institucional de la Universidad de Huelvainstname:Universidad de Huelva (UHU)Inglésengopen accesshttp://purl.org/coar/access_right/c_abf2Atribución-NoComercial-SinDerivadas 3.0 Españahttp://creativecommons.org/licenses/by-nc-nd/3.0/es/info:eu-repo/semantics/openAccessoai:ariasmontano.uhu.es:10272/224522026-06-02T14:58:11Z
dc.title.none.fl_str_mv Rheological and phase behaviour of paraffin wax/bitumen blends with thermal storage characteristics
title Rheological and phase behaviour of paraffin wax/bitumen blends with thermal storage characteristics
spellingShingle Rheological and phase behaviour of paraffin wax/bitumen blends with thermal storage characteristics
Gutiérrez Blandón, Coraima
Bitumen
Paraffin wax
Phase change material
Rheology
DSC
Thermal storage
3303 Ingeniería y Tecnología Químicas
title_short Rheological and phase behaviour of paraffin wax/bitumen blends with thermal storage characteristics
title_full Rheological and phase behaviour of paraffin wax/bitumen blends with thermal storage characteristics
title_fullStr Rheological and phase behaviour of paraffin wax/bitumen blends with thermal storage characteristics
title_full_unstemmed Rheological and phase behaviour of paraffin wax/bitumen blends with thermal storage characteristics
title_sort Rheological and phase behaviour of paraffin wax/bitumen blends with thermal storage characteristics
dc.creator.none.fl_str_mv Gutiérrez Blandón, Coraima
Cuadri Vega, Antonio Abad
Tenorio Alfonso, Adrián
Partal López, Pedro
Navarro Domínguez, Francisco Javier
author Gutiérrez Blandón, Coraima
author_facet Gutiérrez Blandón, Coraima
Cuadri Vega, Antonio Abad
Tenorio Alfonso, Adrián
Partal López, Pedro
Navarro Domínguez, Francisco Javier
author_role author
author2 Cuadri Vega, Antonio Abad
Tenorio Alfonso, Adrián
Partal López, Pedro
Navarro Domínguez, Francisco Javier
author2_role author
author
author
author
dc.contributor.none.fl_str_mv
dc.subject.none.fl_str_mv Bitumen
Paraffin wax
Phase change material
Rheology
DSC
Thermal storage
3303 Ingeniería y Tecnología Químicas
topic Bitumen
Paraffin wax
Phase change material
Rheology
DSC
Thermal storage
3303 Ingeniería y Tecnología Químicas
description This paper analyses the thermomechanical properties, heat storage characteristics and compatibility of bitumen blends with a paraffin wax, having a melting point around 60 ◦C, as phase change material. To that end, temperature sweeps in the linear viscoelastic range, technological properties, Modulated Differential Scanning Calorimetry (MDSC), and cross-polarised optical microscopy observations were carried out on blends and pure compounds. The obtained results reveal a partial compatibility between the compounds and the development of a multiphasic microstructure, where the paraffin-rich or bitumen-rich domains form the continuous phase depending on the concentration, with the phase inversion around 20 wt% wax. Below this threshold concentration, the disperse paraffin-rich phase acts as filler that reinforces the continuous bitumen matrix until it reaches the melting transition. Above the critical concentration for the phase inversion, the continuous paraffin- rich phase controls the rheological response. However, both phases retain their own identity and show their individual transitions and relaxations. Despite the partial compatibility, a high degree of crystallinity is found, especially for high paraffin contents, which would result in a significant capacity to store thermal energy, for applications such as solar thermal collection or thermoregulation materials for buildings, etc.
publishDate 2023
dc.date.none.fl_str_mv 2023
2023-08-16
2023
2023-08-16
dc.type.none.fl_str_mv journal article
http://purl.org/coar/resource_type/c_6501
VoR
http://purl.org/coar/version/c_970fb48d4fbd8a85
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://hdl.handle.net/10272/22452
url https://hdl.handle.net/10272/22452
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
Atribución-NoComercial-SinDerivadas 3.0 España
http://creativecommons.org/licenses/by-nc-nd/3.0/es/
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
Atribución-NoComercial-SinDerivadas 3.0 España
http://creativecommons.org/licenses/by-nc-nd/3.0/es/
eu_rights_str_mv openAccess
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:Arias Montano. Repositorio Institucional de la Universidad de Huelva
instname:Universidad de Huelva (UHU)
instname_str Universidad de Huelva (UHU)
reponame_str Arias Montano. Repositorio Institucional de la Universidad de Huelva
collection Arias Montano. Repositorio Institucional de la Universidad de Huelva
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,812455

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