Artificial simulated and natural weathering of polyvinylchloride for outdoor applications: the influence of the radiation and water in the changes of properties

Detalhes bibliográficos
Autor(a) principal: Real, L. P.
Data de Publicação: 2005
Outros Autores: Gardette, Jean-Luc, Rocha, A.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://repositorio.lnec.pt:8080/jspui/handle/123456789/16882
Resumo: Some artificial accelerated methods are currently used and accepted in the prediction of polymer lifetimes. However, in order to evaluate the durability of these materials, it is indispensable to reproduce the natural weathering phenomena as closely as possible. To attain this target, it is fundamental to understand the role of the atmospheric agents in the photo-degradation. The importance of radiation and temperature in the degradation of polymers is universally recognised. However, there is a trend to underestimate other environmental agents, such as humidity and rain, which play an important part in the evolution of degradation in certain compounded polymers. The objective of this paper is to show the fundamental role of water in the mechanism of degradation of TiO2 pigmented PVC formulations, and compare the results from different exposure methods, considering the influence of this degradation agent.
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spelling Artificial simulated and natural weathering of polyvinylchloride for outdoor applications: the influence of the radiation and water in the changes of propertiesPoly(vinyl chloride)Titanium dioxide pigmentsWeatheringInfrared spectroscopyUvevis spectroscopyColourimetrySome artificial accelerated methods are currently used and accepted in the prediction of polymer lifetimes. However, in order to evaluate the durability of these materials, it is indispensable to reproduce the natural weathering phenomena as closely as possible. To attain this target, it is fundamental to understand the role of the atmospheric agents in the photo-degradation. The importance of radiation and temperature in the degradation of polymers is universally recognised. However, there is a trend to underestimate other environmental agents, such as humidity and rain, which play an important part in the evolution of degradation in certain compounded polymers. The objective of this paper is to show the fundamental role of water in the mechanism of degradation of TiO2 pigmented PVC formulations, and compare the results from different exposure methods, considering the influence of this degradation agent.ELSEVIER2009-10-08T11:24:03Z2010-04-27T08:21:05Z2014-10-20T16:44:53Z2017-04-12T15:58:44Z2005-01-01T00:00:00Z2005info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://repositorio.lnec.pt:8080/jspui/handle/123456789/16882engReal, L. P.Gardette, Jean-LucRocha, A.info: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:RCAAP2024-01-13T03:02:44Zoai:localhost:123456789/16882Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T01:38:41.066463Repositório 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 Artificial simulated and natural weathering of polyvinylchloride for outdoor applications: the influence of the radiation and water in the changes of properties
title Artificial simulated and natural weathering of polyvinylchloride for outdoor applications: the influence of the radiation and water in the changes of properties
spellingShingle Artificial simulated and natural weathering of polyvinylchloride for outdoor applications: the influence of the radiation and water in the changes of properties
Real, L. P.
Poly(vinyl chloride)
Titanium dioxide pigments
Weathering
Infrared spectroscopy
Uvevis spectroscopy
Colourimetry
title_short Artificial simulated and natural weathering of polyvinylchloride for outdoor applications: the influence of the radiation and water in the changes of properties
title_full Artificial simulated and natural weathering of polyvinylchloride for outdoor applications: the influence of the radiation and water in the changes of properties
title_fullStr Artificial simulated and natural weathering of polyvinylchloride for outdoor applications: the influence of the radiation and water in the changes of properties
title_full_unstemmed Artificial simulated and natural weathering of polyvinylchloride for outdoor applications: the influence of the radiation and water in the changes of properties
title_sort Artificial simulated and natural weathering of polyvinylchloride for outdoor applications: the influence of the radiation and water in the changes of properties
author Real, L. P.
author_facet Real, L. P.
Gardette, Jean-Luc
Rocha, A.
author_role author
author2 Gardette, Jean-Luc
Rocha, A.
author2_role author
author
dc.contributor.author.fl_str_mv Real, L. P.
Gardette, Jean-Luc
Rocha, A.
dc.subject.por.fl_str_mv Poly(vinyl chloride)
Titanium dioxide pigments
Weathering
Infrared spectroscopy
Uvevis spectroscopy
Colourimetry
topic Poly(vinyl chloride)
Titanium dioxide pigments
Weathering
Infrared spectroscopy
Uvevis spectroscopy
Colourimetry
description Some artificial accelerated methods are currently used and accepted in the prediction of polymer lifetimes. However, in order to evaluate the durability of these materials, it is indispensable to reproduce the natural weathering phenomena as closely as possible. To attain this target, it is fundamental to understand the role of the atmospheric agents in the photo-degradation. The importance of radiation and temperature in the degradation of polymers is universally recognised. However, there is a trend to underestimate other environmental agents, such as humidity and rain, which play an important part in the evolution of degradation in certain compounded polymers. The objective of this paper is to show the fundamental role of water in the mechanism of degradation of TiO2 pigmented PVC formulations, and compare the results from different exposure methods, considering the influence of this degradation agent.
publishDate 2005
dc.date.none.fl_str_mv 2005-01-01T00:00:00Z
2005
2009-10-08T11:24:03Z
2010-04-27T08:21:05Z
2014-10-20T16:44:53Z
2017-04-12T15:58:44Z
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 http://repositorio.lnec.pt:8080/jspui/handle/123456789/16882
url http://repositorio.lnec.pt:8080/jspui/handle/123456789/16882
dc.language.iso.fl_str_mv eng
language eng
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publisher.none.fl_str_mv ELSEVIER
dc.source.none.fl_str_mv reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
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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
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