Physical and Mechanical Properties of Plywood Produced with Thermally Treated Pinus taeda Veneers
Autor(a) principal: | |
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Data de Publicação: | 2022 |
Outros Autores: | , , , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.3390/f13091398 http://hdl.handle.net/11449/249169 |
Resumo: | Plywood is a structural composite mainly applied in construction. For this purpose, some sort of preservative treatment is recommended to increase its durability. One option of the available treatments is heat treatment, which promotes the modification of the wood properties. This treatment is carried out on the final product (plywood), because it can reduce strength if applied to the veneers. However, no study has proven such a reduction. Therefore, the aim of this work was to evaluate three different temperatures (160 °C, 180 °C and 200 °C) of the heat treatment on the veneer surface and on the physical properties (specific gravity, moisture content and swelling in thickness) and mechanical properties (MOE and MOR in static bending) of Pinus taeda plywood. A reduction was observed in the roughness of the veneer’s surfaces and the total extractives content changed, with a minimum value reached in the 160 °C treatment. The plywood specific gravity initially increased with the heat treatment and did not change at higher temperatures, moisture content reduced, and thickness swelling was not affected. There was no change in the mechanical properties of the plywood, evidencing that the veneer heat treatment does not prejudice mechanically the final product. |
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Physical and Mechanical Properties of Plywood Produced with Thermally Treated Pinus taeda Veneersbonding qualitychromated copper arsenateheat treatmentmechanical propertieswood panelsPlywood is a structural composite mainly applied in construction. For this purpose, some sort of preservative treatment is recommended to increase its durability. One option of the available treatments is heat treatment, which promotes the modification of the wood properties. This treatment is carried out on the final product (plywood), because it can reduce strength if applied to the veneers. However, no study has proven such a reduction. Therefore, the aim of this work was to evaluate three different temperatures (160 °C, 180 °C and 200 °C) of the heat treatment on the veneer surface and on the physical properties (specific gravity, moisture content and swelling in thickness) and mechanical properties (MOE and MOR in static bending) of Pinus taeda plywood. A reduction was observed in the roughness of the veneer’s surfaces and the total extractives content changed, with a minimum value reached in the 160 °C treatment. The plywood specific gravity initially increased with the heat treatment and did not change at higher temperatures, moisture content reduced, and thickness swelling was not affected. There was no change in the mechanical properties of the plywood, evidencing that the veneer heat treatment does not prejudice mechanically the final product.Department of Mechanical Engineering São Paulo State UniversityDepartment of Civil Engineering Federal University of São CarlosDepartment of Civil Engineering Federal Institute of Education Science and Technology of RondôniaDepartment of Civil Engineering University of CoimbraDepartment of Structural Engineering University of São PauloDepartment of Mechanical Engineering São Paulo State UniversityUniversidade Estadual Paulista (UNESP)Universidade Federal de São Carlos (UFSCar)Universidade Estadual de Maringá (UEM)University of CoimbraUniversidade de São Paulo (USP)Ferreira, Bruno Santos [UNESP]Arroyo, Felipe NascimentoKondo, Marcel Yuzo [UNESP]Santos, Herisson Ferreira dosBarreto, Rogério LimaDias, Alfredo Manuel Pereira GeraldesLahr, Francisco Antônio RoccoChristoforo, André LuisCampos, Cristiane Inácio de [UNESP]2023-07-29T14:12:10Z2023-07-29T14:12:10Z2022-09-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://dx.doi.org/10.3390/f13091398Forests, v. 13, n. 9, 2022.1999-4907http://hdl.handle.net/11449/24916910.3390/f130913982-s2.0-85138495981Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengForestsinfo:eu-repo/semantics/openAccess2023-07-29T14:12:10Zoai:repositorio.unesp.br:11449/249169Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462023-07-29T14:12:10Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Physical and Mechanical Properties of Plywood Produced with Thermally Treated Pinus taeda Veneers |
title |
Physical and Mechanical Properties of Plywood Produced with Thermally Treated Pinus taeda Veneers |
spellingShingle |
Physical and Mechanical Properties of Plywood Produced with Thermally Treated Pinus taeda Veneers Ferreira, Bruno Santos [UNESP] bonding quality chromated copper arsenate heat treatment mechanical properties wood panels |
title_short |
Physical and Mechanical Properties of Plywood Produced with Thermally Treated Pinus taeda Veneers |
title_full |
Physical and Mechanical Properties of Plywood Produced with Thermally Treated Pinus taeda Veneers |
title_fullStr |
Physical and Mechanical Properties of Plywood Produced with Thermally Treated Pinus taeda Veneers |
title_full_unstemmed |
Physical and Mechanical Properties of Plywood Produced with Thermally Treated Pinus taeda Veneers |
title_sort |
Physical and Mechanical Properties of Plywood Produced with Thermally Treated Pinus taeda Veneers |
author |
Ferreira, Bruno Santos [UNESP] |
author_facet |
Ferreira, Bruno Santos [UNESP] Arroyo, Felipe Nascimento Kondo, Marcel Yuzo [UNESP] Santos, Herisson Ferreira dos Barreto, Rogério Lima Dias, Alfredo Manuel Pereira Geraldes Lahr, Francisco Antônio Rocco Christoforo, André Luis Campos, Cristiane Inácio de [UNESP] |
author_role |
author |
author2 |
Arroyo, Felipe Nascimento Kondo, Marcel Yuzo [UNESP] Santos, Herisson Ferreira dos Barreto, Rogério Lima Dias, Alfredo Manuel Pereira Geraldes Lahr, Francisco Antônio Rocco Christoforo, André Luis Campos, Cristiane Inácio de [UNESP] |
author2_role |
author author author author author author author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (UNESP) Universidade Federal de São Carlos (UFSCar) Universidade Estadual de Maringá (UEM) University of Coimbra Universidade de São Paulo (USP) |
dc.contributor.author.fl_str_mv |
Ferreira, Bruno Santos [UNESP] Arroyo, Felipe Nascimento Kondo, Marcel Yuzo [UNESP] Santos, Herisson Ferreira dos Barreto, Rogério Lima Dias, Alfredo Manuel Pereira Geraldes Lahr, Francisco Antônio Rocco Christoforo, André Luis Campos, Cristiane Inácio de [UNESP] |
dc.subject.por.fl_str_mv |
bonding quality chromated copper arsenate heat treatment mechanical properties wood panels |
topic |
bonding quality chromated copper arsenate heat treatment mechanical properties wood panels |
description |
Plywood is a structural composite mainly applied in construction. For this purpose, some sort of preservative treatment is recommended to increase its durability. One option of the available treatments is heat treatment, which promotes the modification of the wood properties. This treatment is carried out on the final product (plywood), because it can reduce strength if applied to the veneers. However, no study has proven such a reduction. Therefore, the aim of this work was to evaluate three different temperatures (160 °C, 180 °C and 200 °C) of the heat treatment on the veneer surface and on the physical properties (specific gravity, moisture content and swelling in thickness) and mechanical properties (MOE and MOR in static bending) of Pinus taeda plywood. A reduction was observed in the roughness of the veneer’s surfaces and the total extractives content changed, with a minimum value reached in the 160 °C treatment. The plywood specific gravity initially increased with the heat treatment and did not change at higher temperatures, moisture content reduced, and thickness swelling was not affected. There was no change in the mechanical properties of the plywood, evidencing that the veneer heat treatment does not prejudice mechanically the final product. |
publishDate |
2022 |
dc.date.none.fl_str_mv |
2022-09-01 2023-07-29T14:12:10Z 2023-07-29T14:12:10Z |
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://dx.doi.org/10.3390/f13091398 Forests, v. 13, n. 9, 2022. 1999-4907 http://hdl.handle.net/11449/249169 10.3390/f13091398 2-s2.0-85138495981 |
url |
http://dx.doi.org/10.3390/f13091398 http://hdl.handle.net/11449/249169 |
identifier_str_mv |
Forests, v. 13, n. 9, 2022. 1999-4907 10.3390/f13091398 2-s2.0-85138495981 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Forests |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.source.none.fl_str_mv |
Scopus reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
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1799965338931036160 |