Advanced coatings of poplyureas for building blast protection: physical, chemical, thermal and mechanical characterization
Autor(a) principal: | |
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Data de Publicação: | 2022 |
Outros Autores: | , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | https://hdl.handle.net/1822/81032 |
Resumo: | Due to the increase in the global terrorist threat, there has been a growing demand for materials that can more efficiently protect civil, industrial, and military structures against explosions. In this sense, two new commercial polyureas (A and B), that present high potential to be used as a protective coating on building facades against explosions, were compared in this work, through several tests. Chemical characterization with the Scanning Electron Microscope (SEM) of the surface of the polyureas revealed that the commercial polyurea A has a heterogeneous surface while the other polyurea has a more uniform and homogeneous surface, resulting in a more compact structure. The shock-wave attenuation ability of polyurea is believed to be controlled primarily by the hard domains. The TGA tests revealed that polyurea B has more hard segments than polyurea A in its composition. The mechanical tests performed showed that polyurea B has significantly better tensile properties-almost 3000% of maximum deformation capacity compared with approximately 115% of polyurea A. Thus, it was concluded that polyurea B has more potential to be used as a coating in building blast protection due to its exceptional elongation characteristics, a critical parameter to absorb the high frequency and intensity of blasts. |
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Advanced coatings of poplyureas for building blast protection: physical, chemical, thermal and mechanical characterizationPolyureaBlast protectionElongationCoatingScience & TechnologyDue to the increase in the global terrorist threat, there has been a growing demand for materials that can more efficiently protect civil, industrial, and military structures against explosions. In this sense, two new commercial polyureas (A and B), that present high potential to be used as a protective coating on building facades against explosions, were compared in this work, through several tests. Chemical characterization with the Scanning Electron Microscope (SEM) of the surface of the polyureas revealed that the commercial polyurea A has a heterogeneous surface while the other polyurea has a more uniform and homogeneous surface, resulting in a more compact structure. The shock-wave attenuation ability of polyurea is believed to be controlled primarily by the hard domains. The TGA tests revealed that polyurea B has more hard segments than polyurea A in its composition. The mechanical tests performed showed that polyurea B has significantly better tensile properties-almost 3000% of maximum deformation capacity compared with approximately 115% of polyurea A. Thus, it was concluded that polyurea B has more potential to be used as a coating in building blast protection due to its exceptional elongation characteristics, a critical parameter to absorb the high frequency and intensity of blasts.Multidisciplinary Digital Publishing InstituteUniversidade do MinhoLeite, FernandoMota, CarlosBessa, JoãoCunha, FernandoFangueiro, RaúlGomes, GabrielMingote, José2022-10-272022-10-27T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/1822/81032engLeite, F.; Mota, C.; Bessa, J.; Cunha, F.; Fangueiro, R.; Gomes, G.; Mingote, J. Advanced Coatings of Polyureas for Building Blast Protection: Physical, Chemical, Thermal and Mechanical Characterization. Appl. Sci. 2022, 12, 10879. https://doi.org/10.3390/app1221108792076-341710.3390/app122110879https://www.mdpi.com/2076-3417/12/21/10879info:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2023-07-21T12:49:26Zoai:repositorium.sdum.uminho.pt:1822/81032Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T19:47:54.045052Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse |
dc.title.none.fl_str_mv |
Advanced coatings of poplyureas for building blast protection: physical, chemical, thermal and mechanical characterization |
title |
Advanced coatings of poplyureas for building blast protection: physical, chemical, thermal and mechanical characterization |
spellingShingle |
Advanced coatings of poplyureas for building blast protection: physical, chemical, thermal and mechanical characterization Leite, Fernando Polyurea Blast protection Elongation Coating Science & Technology |
title_short |
Advanced coatings of poplyureas for building blast protection: physical, chemical, thermal and mechanical characterization |
title_full |
Advanced coatings of poplyureas for building blast protection: physical, chemical, thermal and mechanical characterization |
title_fullStr |
Advanced coatings of poplyureas for building blast protection: physical, chemical, thermal and mechanical characterization |
title_full_unstemmed |
Advanced coatings of poplyureas for building blast protection: physical, chemical, thermal and mechanical characterization |
title_sort |
Advanced coatings of poplyureas for building blast protection: physical, chemical, thermal and mechanical characterization |
author |
Leite, Fernando |
author_facet |
Leite, Fernando Mota, Carlos Bessa, João Cunha, Fernando Fangueiro, Raúl Gomes, Gabriel Mingote, José |
author_role |
author |
author2 |
Mota, Carlos Bessa, João Cunha, Fernando Fangueiro, Raúl Gomes, Gabriel Mingote, José |
author2_role |
author author author author author author |
dc.contributor.none.fl_str_mv |
Universidade do Minho |
dc.contributor.author.fl_str_mv |
Leite, Fernando Mota, Carlos Bessa, João Cunha, Fernando Fangueiro, Raúl Gomes, Gabriel Mingote, José |
dc.subject.por.fl_str_mv |
Polyurea Blast protection Elongation Coating Science & Technology |
topic |
Polyurea Blast protection Elongation Coating Science & Technology |
description |
Due to the increase in the global terrorist threat, there has been a growing demand for materials that can more efficiently protect civil, industrial, and military structures against explosions. In this sense, two new commercial polyureas (A and B), that present high potential to be used as a protective coating on building facades against explosions, were compared in this work, through several tests. Chemical characterization with the Scanning Electron Microscope (SEM) of the surface of the polyureas revealed that the commercial polyurea A has a heterogeneous surface while the other polyurea has a more uniform and homogeneous surface, resulting in a more compact structure. The shock-wave attenuation ability of polyurea is believed to be controlled primarily by the hard domains. The TGA tests revealed that polyurea B has more hard segments than polyurea A in its composition. The mechanical tests performed showed that polyurea B has significantly better tensile properties-almost 3000% of maximum deformation capacity compared with approximately 115% of polyurea A. Thus, it was concluded that polyurea B has more potential to be used as a coating in building blast protection due to its exceptional elongation characteristics, a critical parameter to absorb the high frequency and intensity of blasts. |
publishDate |
2022 |
dc.date.none.fl_str_mv |
2022-10-27 2022-10-27T00:00:00Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
https://hdl.handle.net/1822/81032 |
url |
https://hdl.handle.net/1822/81032 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Leite, F.; Mota, C.; Bessa, J.; Cunha, F.; Fangueiro, R.; Gomes, G.; Mingote, J. Advanced Coatings of Polyureas for Building Blast Protection: Physical, Chemical, Thermal and Mechanical Characterization. Appl. Sci. 2022, 12, 10879. https://doi.org/10.3390/app122110879 2076-3417 10.3390/app122110879 https://www.mdpi.com/2076-3417/12/21/10879 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Multidisciplinary Digital Publishing Institute |
publisher.none.fl_str_mv |
Multidisciplinary Digital Publishing Institute |
dc.source.none.fl_str_mv |
reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação instacron:RCAAP |
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Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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RCAAP |
institution |
RCAAP |
reponame_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
collection |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
repository.name.fl_str_mv |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
repository.mail.fl_str_mv |
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1799133054427463680 |