Evaluation of the influence of testing parameters on the melt flow index of thermoplastics
Autor(a) principal: | |
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Data de Publicação: | 2012 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/10400.21/5103 |
Resumo: | The main goals of the present work are the evaluation of the influence of several variables and test parameters on the melt flow index (MFI) of thermoplastics, and the determination of the uncertainty associated with the measurements. To evaluate the influence of test parameters on the measurement of MFI the design of experiments (DOE) approach has been used. The uncertainty has been calculated using a "bottom-up" approach given in the "Guide to the Expression of the Uncertainty of Measurement" (GUM). Since an analytical expression relating the output response (MFI) with input parameters does not exist, it has been necessary to build mathematical models by adjusting the experimental observations of the response variable in accordance with each input parameter. Subsequently, the determination of the uncertainty associated with the measurement of MFI has been performed by applying the law of propagation of uncertainty to the values of uncertainty of the input parameters. Finally, the activation energy (Ea) of the melt flow at around 200 degrees C and the respective uncertainty have also been determined. |
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Evaluation of the influence of testing parameters on the melt flow index of thermoplasticsMelt Flow IndexHDPEDesign of ExperimentsAnalysis of VarianceUncertaintyThe main goals of the present work are the evaluation of the influence of several variables and test parameters on the melt flow index (MFI) of thermoplastics, and the determination of the uncertainty associated with the measurements. To evaluate the influence of test parameters on the measurement of MFI the design of experiments (DOE) approach has been used. The uncertainty has been calculated using a "bottom-up" approach given in the "Guide to the Expression of the Uncertainty of Measurement" (GUM). Since an analytical expression relating the output response (MFI) with input parameters does not exist, it has been necessary to build mathematical models by adjusting the experimental observations of the response variable in accordance with each input parameter. Subsequently, the determination of the uncertainty associated with the measurement of MFI has been performed by applying the law of propagation of uncertainty to the values of uncertainty of the input parameters. Finally, the activation energy (Ea) of the melt flow at around 200 degrees C and the respective uncertainty have also been determined.Elsevier SCI LTDRCIPLGuerreiros, Sérgio D. C.João, IsabelReal, L. E. Pimentel2015-09-08T14:24:41Z20122012-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfapplication/pdfhttp://hdl.handle.net/10400.21/5103engGUERREIRO, S. D. C.; JOÃO, I. M.; PIMENTEL, R. L. E. – Evaluation of the influence of testing parameters on the melt flow index of thermoplastics. Polymer Testing. ISSN: 0142-9418. Vol. 31, nr. 8 (2012), pp. 1026-10300142-941810.1016/j.polymertesting.2012.07.008metadata only accessinfo: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:RCAAP2023-08-03T09:48:02Zoai:repositorio.ipl.pt:10400.21/5103Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T20:14:25.711847Repositório 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 |
Evaluation of the influence of testing parameters on the melt flow index of thermoplastics |
title |
Evaluation of the influence of testing parameters on the melt flow index of thermoplastics |
spellingShingle |
Evaluation of the influence of testing parameters on the melt flow index of thermoplastics Guerreiros, Sérgio D. C. Melt Flow Index HDPE Design of Experiments Analysis of Variance Uncertainty |
title_short |
Evaluation of the influence of testing parameters on the melt flow index of thermoplastics |
title_full |
Evaluation of the influence of testing parameters on the melt flow index of thermoplastics |
title_fullStr |
Evaluation of the influence of testing parameters on the melt flow index of thermoplastics |
title_full_unstemmed |
Evaluation of the influence of testing parameters on the melt flow index of thermoplastics |
title_sort |
Evaluation of the influence of testing parameters on the melt flow index of thermoplastics |
author |
Guerreiros, Sérgio D. C. |
author_facet |
Guerreiros, Sérgio D. C. João, Isabel Real, L. E. Pimentel |
author_role |
author |
author2 |
João, Isabel Real, L. E. Pimentel |
author2_role |
author author |
dc.contributor.none.fl_str_mv |
RCIPL |
dc.contributor.author.fl_str_mv |
Guerreiros, Sérgio D. C. João, Isabel Real, L. E. Pimentel |
dc.subject.por.fl_str_mv |
Melt Flow Index HDPE Design of Experiments Analysis of Variance Uncertainty |
topic |
Melt Flow Index HDPE Design of Experiments Analysis of Variance Uncertainty |
description |
The main goals of the present work are the evaluation of the influence of several variables and test parameters on the melt flow index (MFI) of thermoplastics, and the determination of the uncertainty associated with the measurements. To evaluate the influence of test parameters on the measurement of MFI the design of experiments (DOE) approach has been used. The uncertainty has been calculated using a "bottom-up" approach given in the "Guide to the Expression of the Uncertainty of Measurement" (GUM). Since an analytical expression relating the output response (MFI) with input parameters does not exist, it has been necessary to build mathematical models by adjusting the experimental observations of the response variable in accordance with each input parameter. Subsequently, the determination of the uncertainty associated with the measurement of MFI has been performed by applying the law of propagation of uncertainty to the values of uncertainty of the input parameters. Finally, the activation energy (Ea) of the melt flow at around 200 degrees C and the respective uncertainty have also been determined. |
publishDate |
2012 |
dc.date.none.fl_str_mv |
2012 2012-01-01T00:00:00Z 2015-09-08T14:24:41Z |
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://hdl.handle.net/10400.21/5103 |
url |
http://hdl.handle.net/10400.21/5103 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
GUERREIRO, S. D. C.; JOÃO, I. M.; PIMENTEL, R. L. E. – Evaluation of the influence of testing parameters on the melt flow index of thermoplastics. Polymer Testing. ISSN: 0142-9418. Vol. 31, nr. 8 (2012), pp. 1026-1030 0142-9418 10.1016/j.polymertesting.2012.07.008 |
dc.rights.driver.fl_str_mv |
metadata only access info:eu-repo/semantics/openAccess |
rights_invalid_str_mv |
metadata only access |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf application/pdf |
dc.publisher.none.fl_str_mv |
Elsevier SCI LTD |
publisher.none.fl_str_mv |
Elsevier SCI LTD |
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 |
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RCAAP |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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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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1799133402392166400 |