Quality of wood bonded joints of five species of Eucalyptus with polyvinyl acetate and resorcinol-formaldehyde adhesives
The objective of this work was to evaluate the potential of wood of Eucalyptus benthamii, Eucalyptus dunnii, Eucalyptus grandis, Eucalyptus saligna and Eucalyptus urophylla for the production of edge glued panels (EGP) and glued laminated timber (Glulam). Physical and chemical properties of the wood...
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| Format: | Online |
| Language: | por spa |
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Instituto de Ecología, A.C.
2020
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| Online Access: | https://myb.ojs.inecol.mx/index.php/myb/article/view/e2632064 |
| _version_ | 1799769397423767552 |
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| author | Trianoski, Rosilani Iwakiri, Setsuo Bonduelle, Ghislaine Miranda |
| author_facet | Trianoski, Rosilani Iwakiri, Setsuo Bonduelle, Ghislaine Miranda |
| author_sort | Trianoski, Rosilani |
| collection | MYB |
| description | The objective of this work was to evaluate the potential of wood of Eucalyptus benthamii, Eucalyptus dunnii, Eucalyptus grandis, Eucalyptus saligna and Eucalyptus urophylla for the production of edge glued panels (EGP) and glued laminated timber (Glulam). Physical and chemical properties of the wood were determined based on the COPAN 461/459:1972 and TAPPI 204/252:2002 standards. Glued joints were manufactured in resin weights of 150 g m-2 and 200 g m-2 for polyvinyl acetate (PVA) and 200 g m-2 and 300 g m-2 for resorcinol-formaldehyde (RF). Bonding quality was evaluated by shear tests based on EN 13354-2008 standard document. All species presented medium to low basic density and medium to high contraction anisotropy. The total extractives content and pH are within the range referenced in the literature. The evaluation of the results based on the requirements of standard document EN 15353-2008 for the 5th lower percentile indicated that the E. benthamii, E. dunnii, E. grandis and E. saligna species showed high potential for the production of EGP with PVA adhesive, for indoor and outdoor use with coverage. For RF adhesive bonding, E. dunni showed better results, being indicative of its good potential for the production of glued laminated timber – GLULAM, for structural applications in the external environment. For both types of adhesives, the increase in weight did not affect the shear results of bonded joints. |
| format | Online |
| id | oai:oai.myb.ojs.inecol.mx:article-2064 |
| institution | Madera y Bosques |
| language | por spa |
| publishDate | 2020 |
| publisher | Instituto de Ecología, A.C. |
| record_format | ojs |
| spelling | oai:oai.myb.ojs.inecol.mx:article-20642022-11-29T22:34:06Z Quality of wood bonded joints of five species of Eucalyptus with polyvinyl acetate and resorcinol-formaldehyde adhesives Qualidade das juntas coladas de madeira de cinco espécies de Eucalyptus com adesivos acetato de polivinila e resorcina-formaldeído Trianoski, Rosilani Iwakiri, Setsuo Bonduelle, Ghislaine Miranda anisotropia cisalhamento da linha de cola extrativos falhas na madeira madeira laminada colada painéis EGP anisotropy glue line shear test extractives wood failures glued laminated wood edge glued panel The objective of this work was to evaluate the potential of wood of Eucalyptus benthamii, Eucalyptus dunnii, Eucalyptus grandis, Eucalyptus saligna and Eucalyptus urophylla for the production of edge glued panels (EGP) and glued laminated timber (Glulam). Physical and chemical properties of the wood were determined based on the COPAN 461/459:1972 and TAPPI 204/252:2002 standards. Glued joints were manufactured in resin weights of 150 g m-2 and 200 g m-2 for polyvinyl acetate (PVA) and 200 g m-2 and 300 g m-2 for resorcinol-formaldehyde (RF). Bonding quality was evaluated by shear tests based on EN 13354-2008 standard document. All species presented medium to low basic density and medium to high contraction anisotropy. The total extractives content and pH are within the range referenced in the literature. The evaluation of the results based on the requirements of standard document EN 15353-2008 for the 5th lower percentile indicated that the E. benthamii, E. dunnii, E. grandis and E. saligna species showed high potential for the production of EGP with PVA adhesive, for indoor and outdoor use with coverage. For RF adhesive bonding, E. dunni showed better results, being indicative of its good potential for the production of glued laminated timber – GLULAM, for structural applications in the external environment. For both types of adhesives, the increase in weight did not affect the shear results of bonded joints. O objetivo deste trabalho foi avaliar o potencial das madeiras de Eucalyptus benthamii, Eucalyptus dunnii, Eucalyptus grandis, Eucalyptus saligna e Eucalyptus urophylla, para produção de painéis colados lateralmente (EGP) e madeira laminada colada (MLC). As propriedades físicas e químicas das madeiras foram determinadas com base nas normas COPANT 461/459:1972 e TAPPI 204/252:2002. Foram confeccionadas juntas coladas com adesivo acetato de polivinila (PVA), com gramaturas de 150 g m-2 e 200 g m-2, e resorcina-formaldeído (RF), com 200 g m-2 e 300 g m-2. A qualidade de colagem foi avaliada por meio de ensaios de cisalhamento, com base na norma EN 13354:2008. Todas as espécies apresentaram densidade básica de média a baixa e anisotropia de contração de média a alta. O teor de extrativos totais e pH estão dentro da faixa referenciada na literatura. As avaliações dos resultados com base nos requisitos da norma EN 15353:2008 para 5º percentil inferior indicaram que as espécies E. benthamii, E. dunnii, E. grandis e E. saligna, apresentam potencial para produção de painéis EGP com adesivo PVA, para o uso interno, e externo com cobertura. Para a colagem com adesivo RF, o E. dunni apresentou melhores resultados, sendo indicativo do seu bom potencial para a produção de madeira laminada colada, visando aplicações estruturais em ambientes interno úmido e externo. Para os dois tipos de adesivos o aumento na gramatura não afetou os resultados de cisalhamento das juntas coladas. Instituto de Ecología, A.C. 2020-12-03 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Artículo evaluado por pares application/pdf text/xml https://myb.ojs.inecol.mx/index.php/myb/article/view/e2632064 10.21829/myb.2020.2632064 Madera y Bosques; Vol. 26 No. 3 (2020): Autumn 2020 Madera y Bosques; Vol. 26 Núm. 3 (2020): Otoño 2020 2448-7597 1405-0471 por spa https://myb.ojs.inecol.mx/index.php/myb/article/view/e2632064/2122 https://myb.ojs.inecol.mx/index.php/myb/article/view/e2632064/2150 10.21829/myb.2018.242105 10.21829/myb.2019.251155 Derechos de autor 2020 Madera y Bosques http://creativecommons.org/licenses/by-nc-sa/4.0 |
| spellingShingle | Trianoski, Rosilani Iwakiri, Setsuo Bonduelle, Ghislaine Miranda Quality of wood bonded joints of five species of Eucalyptus with polyvinyl acetate and resorcinol-formaldehyde adhesives |
| title | Quality of wood bonded joints of five species of Eucalyptus with polyvinyl acetate and resorcinol-formaldehyde adhesives |
| title_full | Quality of wood bonded joints of five species of Eucalyptus with polyvinyl acetate and resorcinol-formaldehyde adhesives |
| title_fullStr | Quality of wood bonded joints of five species of Eucalyptus with polyvinyl acetate and resorcinol-formaldehyde adhesives |
| title_full_unstemmed | Quality of wood bonded joints of five species of Eucalyptus with polyvinyl acetate and resorcinol-formaldehyde adhesives |
| title_short | Quality of wood bonded joints of five species of Eucalyptus with polyvinyl acetate and resorcinol-formaldehyde adhesives |
| title_sort | quality of wood bonded joints of five species of eucalyptus with polyvinyl acetate and resorcinol-formaldehyde adhesives |
| url | https://myb.ojs.inecol.mx/index.php/myb/article/view/e2632064 |
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