Liquefied wood as a partial substitute of melamine-urea-formaldehyde and urea-formaldehyde resins
Autor(a) principal: | |
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Data de Publicação: | 2015 |
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/10400.19/4299 |
Resumo: | Maritime pine (Pinus pinaster) sawdust was used to produce liquefied wood by the polyhydric method with acid catalysis. The process was optimized to produce the highest amount of liquefied wood. Wood liquefied at 160ºC for 90 min was used in the adhesion tests. The bond strength of veneer glued with urea-formaldehyde and melamine-urea-formaldehyde resins and several mixtures of liquefied wood with urea- formaldehyde and melamine-urea-formaldehyde wasevaluated by automated bonding evaluation system. With the increase in liquefied wood content the bond strength decreased. Nevertheless for 20% liquefied wood the reduction of internal bond strength is relatively small and still within the minimum standards required. When 70% of liquefied wood is employed there is a significant decrease in bond strength. In conclusion it is possible to use a small amount of maritime pine sawdust liquefied wood as a partial substitute of urea-formaldehyde and melamine-urea-formaldehyde resins in the particleboard production, thus decreasing the formaldehyde content. |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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Liquefied wood as a partial substitute of melamine-urea-formaldehyde and urea-formaldehyde resinsAutomated bonding evaluation systemLiquefied woodParticleboardPinus pinasterResinMaritime pine (Pinus pinaster) sawdust was used to produce liquefied wood by the polyhydric method with acid catalysis. The process was optimized to produce the highest amount of liquefied wood. Wood liquefied at 160ºC for 90 min was used in the adhesion tests. The bond strength of veneer glued with urea-formaldehyde and melamine-urea-formaldehyde resins and several mixtures of liquefied wood with urea- formaldehyde and melamine-urea-formaldehyde wasevaluated by automated bonding evaluation system. With the increase in liquefied wood content the bond strength decreased. Nevertheless for 20% liquefied wood the reduction of internal bond strength is relatively small and still within the minimum standards required. When 70% of liquefied wood is employed there is a significant decrease in bond strength. In conclusion it is possible to use a small amount of maritime pine sawdust liquefied wood as a partial substitute of urea-formaldehyde and melamine-urea-formaldehyde resins in the particleboard production, thus decreasing the formaldehyde content.ScieloRepositório Científico do Instituto Politécnico de ViseuEsteves, BrunoMartins, JoãoMartins, JorgeCruz-Lopes, LuísaVicente, JoséDomingos, Idalina2017-02-02T09:05:05Z20152015-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10400.19/4299engEsteves, Bruno, Martins, João, Martins, Jorge, Cruz-Lopes, Luísa, Vicente, José, & Domingos, Idalina. (2015). Liquefied wood as a partial substitute of melamine-urea-formaldehyde and urea-formaldehyde resins. Maderas. Ciencia y tecnología, 17(2), 277-284.0718-221X10.4067/S0718-221X2015005000026info: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:RCAAP2023-01-16T15:27:01Zoai:repositorio.ipv.pt:10400.19/4299Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T16:42:47.657088Repositório 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 |
Liquefied wood as a partial substitute of melamine-urea-formaldehyde and urea-formaldehyde resins |
title |
Liquefied wood as a partial substitute of melamine-urea-formaldehyde and urea-formaldehyde resins |
spellingShingle |
Liquefied wood as a partial substitute of melamine-urea-formaldehyde and urea-formaldehyde resins Esteves, Bruno Automated bonding evaluation system Liquefied wood Particleboard Pinus pinaster Resin |
title_short |
Liquefied wood as a partial substitute of melamine-urea-formaldehyde and urea-formaldehyde resins |
title_full |
Liquefied wood as a partial substitute of melamine-urea-formaldehyde and urea-formaldehyde resins |
title_fullStr |
Liquefied wood as a partial substitute of melamine-urea-formaldehyde and urea-formaldehyde resins |
title_full_unstemmed |
Liquefied wood as a partial substitute of melamine-urea-formaldehyde and urea-formaldehyde resins |
title_sort |
Liquefied wood as a partial substitute of melamine-urea-formaldehyde and urea-formaldehyde resins |
author |
Esteves, Bruno |
author_facet |
Esteves, Bruno Martins, João Martins, Jorge Cruz-Lopes, Luísa Vicente, José Domingos, Idalina |
author_role |
author |
author2 |
Martins, João Martins, Jorge Cruz-Lopes, Luísa Vicente, José Domingos, Idalina |
author2_role |
author author author author author |
dc.contributor.none.fl_str_mv |
Repositório Científico do Instituto Politécnico de Viseu |
dc.contributor.author.fl_str_mv |
Esteves, Bruno Martins, João Martins, Jorge Cruz-Lopes, Luísa Vicente, José Domingos, Idalina |
dc.subject.por.fl_str_mv |
Automated bonding evaluation system Liquefied wood Particleboard Pinus pinaster Resin |
topic |
Automated bonding evaluation system Liquefied wood Particleboard Pinus pinaster Resin |
description |
Maritime pine (Pinus pinaster) sawdust was used to produce liquefied wood by the polyhydric method with acid catalysis. The process was optimized to produce the highest amount of liquefied wood. Wood liquefied at 160ºC for 90 min was used in the adhesion tests. The bond strength of veneer glued with urea-formaldehyde and melamine-urea-formaldehyde resins and several mixtures of liquefied wood with urea- formaldehyde and melamine-urea-formaldehyde wasevaluated by automated bonding evaluation system. With the increase in liquefied wood content the bond strength decreased. Nevertheless for 20% liquefied wood the reduction of internal bond strength is relatively small and still within the minimum standards required. When 70% of liquefied wood is employed there is a significant decrease in bond strength. In conclusion it is possible to use a small amount of maritime pine sawdust liquefied wood as a partial substitute of urea-formaldehyde and melamine-urea-formaldehyde resins in the particleboard production, thus decreasing the formaldehyde content. |
publishDate |
2015 |
dc.date.none.fl_str_mv |
2015 2015-01-01T00:00:00Z 2017-02-02T09:05:05Z |
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/10400.19/4299 |
url |
http://hdl.handle.net/10400.19/4299 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Esteves, Bruno, Martins, João, Martins, Jorge, Cruz-Lopes, Luísa, Vicente, José, & Domingos, Idalina. (2015). Liquefied wood as a partial substitute of melamine-urea-formaldehyde and urea-formaldehyde resins. Maderas. Ciencia y tecnología, 17(2), 277-284. 0718-221X 10.4067/S0718-221X2015005000026 |
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 |
Scielo |
publisher.none.fl_str_mv |
Scielo |
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 |
instname_str |
Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
instacron_str |
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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1799130895400042496 |