Weathering Resistance of Waterborne Polyurethane Coatings Reinforced with Silica from Rice Husk Ash
Autor(a) principal: | |
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Data de Publicação: | 2019 |
Outros Autores: | , , , , , , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Anais da Academia Brasileira de Ciências (Online) |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652019000700403 |
Resumo: | Abstract: Waterborne polyurethanes (WPUs) are interesting materials for coatings when compared to solvent-based polyurethanes, once that reducing the concentration of volatile organic compounds that are harmful for human health and the environment. However, the WPU has low weathering resistance. In order to improve this behavior among others properties, inorganic fillers has been added in these systems. SiO2 particles from various sources, mainly, from agro-industrial waste, as rice husk has attracted the scientific and technological interest. In this study, the accelerated weathering essay was performed in waterborne polyurethane (WPU)/ silica (from rice husk ash) composites in order to evaluate the thermal and physical changes in these materials. These composites were prepared by two distinct methods: in situ polymerization and blending method. The highest resistance to thermal degradation and to accelerated weathering was reached with WPU/silica composites obtained by blending method due the interactions between SiO2 particles and the polymer matrices. Blending method for preparation WPU/silica composites proved to be a simpler and faster method, with no drawback for large scale application. |
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Anais da Academia Brasileira de Ciências (Online) |
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Weathering Resistance of Waterborne Polyurethane Coatings Reinforced with Silica from Rice Husk Ashwaterborne polyurethanerice husk ashsilicaaccelerated weathering resistanceAbstract: Waterborne polyurethanes (WPUs) are interesting materials for coatings when compared to solvent-based polyurethanes, once that reducing the concentration of volatile organic compounds that are harmful for human health and the environment. However, the WPU has low weathering resistance. In order to improve this behavior among others properties, inorganic fillers has been added in these systems. SiO2 particles from various sources, mainly, from agro-industrial waste, as rice husk has attracted the scientific and technological interest. In this study, the accelerated weathering essay was performed in waterborne polyurethane (WPU)/ silica (from rice husk ash) composites in order to evaluate the thermal and physical changes in these materials. These composites were prepared by two distinct methods: in situ polymerization and blending method. The highest resistance to thermal degradation and to accelerated weathering was reached with WPU/silica composites obtained by blending method due the interactions between SiO2 particles and the polymer matrices. Blending method for preparation WPU/silica composites proved to be a simpler and faster method, with no drawback for large scale application.Academia Brasileira de Ciências2019-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652019000700403Anais da Academia Brasileira de Ciências v.91 n.4 2019reponame:Anais da Academia Brasileira de Ciências (Online)instname:Academia Brasileira de Ciências (ABC)instacron:ABC10.1590/0001-3765201920181190info:eu-repo/semantics/openAccessMONTEIRO,WESLEY F.MIRANDA,GABRIELA M.SOARES,RAFAEL R.SANTOS,CLÁUDIA A.B. DOSHOFFMANN,MAURÍCIO S.CARONE,CARLOS L.P.LIMA,VIVIANE DESOUZA,MILTON F. DECAMPANI,ADRIANO D.EINLOFT,SANDRA M.O.LIMA,JEANE E. DELIGABUE,ROSANE A.eng2019-11-21T00:00:00Zoai:scielo:S0001-37652019000700403Revistahttp://www.scielo.br/aabchttps://old.scielo.br/oai/scielo-oai.php||aabc@abc.org.br1678-26900001-3765opendoar:2019-11-21T00:00Anais da Academia Brasileira de Ciências (Online) - Academia Brasileira de Ciências (ABC)false |
dc.title.none.fl_str_mv |
Weathering Resistance of Waterborne Polyurethane Coatings Reinforced with Silica from Rice Husk Ash |
title |
Weathering Resistance of Waterborne Polyurethane Coatings Reinforced with Silica from Rice Husk Ash |
spellingShingle |
Weathering Resistance of Waterborne Polyurethane Coatings Reinforced with Silica from Rice Husk Ash MONTEIRO,WESLEY F. waterborne polyurethane rice husk ash silica accelerated weathering resistance |
title_short |
Weathering Resistance of Waterborne Polyurethane Coatings Reinforced with Silica from Rice Husk Ash |
title_full |
Weathering Resistance of Waterborne Polyurethane Coatings Reinforced with Silica from Rice Husk Ash |
title_fullStr |
Weathering Resistance of Waterborne Polyurethane Coatings Reinforced with Silica from Rice Husk Ash |
title_full_unstemmed |
Weathering Resistance of Waterborne Polyurethane Coatings Reinforced with Silica from Rice Husk Ash |
title_sort |
Weathering Resistance of Waterborne Polyurethane Coatings Reinforced with Silica from Rice Husk Ash |
author |
MONTEIRO,WESLEY F. |
author_facet |
MONTEIRO,WESLEY F. MIRANDA,GABRIELA M. SOARES,RAFAEL R. SANTOS,CLÁUDIA A.B. DOS HOFFMANN,MAURÍCIO S. CARONE,CARLOS L.P. LIMA,VIVIANE DE SOUZA,MILTON F. DE CAMPANI,ADRIANO D. EINLOFT,SANDRA M.O. LIMA,JEANE E. DE LIGABUE,ROSANE A. |
author_role |
author |
author2 |
MIRANDA,GABRIELA M. SOARES,RAFAEL R. SANTOS,CLÁUDIA A.B. DOS HOFFMANN,MAURÍCIO S. CARONE,CARLOS L.P. LIMA,VIVIANE DE SOUZA,MILTON F. DE CAMPANI,ADRIANO D. EINLOFT,SANDRA M.O. LIMA,JEANE E. DE LIGABUE,ROSANE A. |
author2_role |
author author author author author author author author author author author |
dc.contributor.author.fl_str_mv |
MONTEIRO,WESLEY F. MIRANDA,GABRIELA M. SOARES,RAFAEL R. SANTOS,CLÁUDIA A.B. DOS HOFFMANN,MAURÍCIO S. CARONE,CARLOS L.P. LIMA,VIVIANE DE SOUZA,MILTON F. DE CAMPANI,ADRIANO D. EINLOFT,SANDRA M.O. LIMA,JEANE E. DE LIGABUE,ROSANE A. |
dc.subject.por.fl_str_mv |
waterborne polyurethane rice husk ash silica accelerated weathering resistance |
topic |
waterborne polyurethane rice husk ash silica accelerated weathering resistance |
description |
Abstract: Waterborne polyurethanes (WPUs) are interesting materials for coatings when compared to solvent-based polyurethanes, once that reducing the concentration of volatile organic compounds that are harmful for human health and the environment. However, the WPU has low weathering resistance. In order to improve this behavior among others properties, inorganic fillers has been added in these systems. SiO2 particles from various sources, mainly, from agro-industrial waste, as rice husk has attracted the scientific and technological interest. In this study, the accelerated weathering essay was performed in waterborne polyurethane (WPU)/ silica (from rice husk ash) composites in order to evaluate the thermal and physical changes in these materials. These composites were prepared by two distinct methods: in situ polymerization and blending method. The highest resistance to thermal degradation and to accelerated weathering was reached with WPU/silica composites obtained by blending method due the interactions between SiO2 particles and the polymer matrices. Blending method for preparation WPU/silica composites proved to be a simpler and faster method, with no drawback for large scale application. |
publishDate |
2019 |
dc.date.none.fl_str_mv |
2019-01-01 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652019000700403 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652019000700403 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/0001-3765201920181190 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
text/html |
dc.publisher.none.fl_str_mv |
Academia Brasileira de Ciências |
publisher.none.fl_str_mv |
Academia Brasileira de Ciências |
dc.source.none.fl_str_mv |
Anais da Academia Brasileira de Ciências v.91 n.4 2019 reponame:Anais da Academia Brasileira de Ciências (Online) instname:Academia Brasileira de Ciências (ABC) instacron:ABC |
instname_str |
Academia Brasileira de Ciências (ABC) |
instacron_str |
ABC |
institution |
ABC |
reponame_str |
Anais da Academia Brasileira de Ciências (Online) |
collection |
Anais da Academia Brasileira de Ciências (Online) |
repository.name.fl_str_mv |
Anais da Academia Brasileira de Ciências (Online) - Academia Brasileira de Ciências (ABC) |
repository.mail.fl_str_mv |
||aabc@abc.org.br |
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1754302868074004480 |