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| Faria,Douglas Lamounier; Cruz,Thiago Moreira; Dias,Matheus Cordazzo; Duarte,Paulo Junio; Mendes,Lourival Marin; Guimarães Junior,José Benedito. |
| ABSTRACT This work aimed to evaluate the physical and mechanical behavior of glued laminated timber (GLT) - glulam pieces of Hevea brasiliensis treated with chromed copper arsenate (CCA), chromed copper borate (CCB) and pyrethroid in the production of GLT. The pieces were produced using three wooden laminae with dimensions of 60 x 20 x 1200 mm, (width x thickness x length), joined with epoxy adhesive under 1.0 MPa pressure for 24h at room temperature. The rubberwood had an apparent density of 0.624 g cm-3, a value close to that of Eucalyptus grandis wood, a species traditionally used in the manufacture of GLT. Regarding the GLT parts, it was observed that the preservative treatment with CCA and CCB influenced negatively the values of the mechanical... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Adhesive wood bonding; Static bending; Delamination; Preservative treatment. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542020000100236 |
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| Guimarães,Bárbara Maria Ribeiro; Mendes,Lourival Marin; Tonoli,Gustavo Henrique Denzin; Bufalino,Lina; Mendes,Rafael Farinassi; Guimarães Junior,José Benedito. |
| Brazil is one of the major banana producers in the world, and consequently generates a great amount of residues from this crop, which could be utilized in particleboard production. The present work aimed to evaluate the effect of different chemical treatments of the particles of Musa sp. pseudostem, on their chemical and physical properties (basic density), and on the physical and mechanical properties of the particleboards produced with the same material. Five treatments were applied to the particles: 1) without treatment (control); 2) 2% acetic acid; 3) 0.5% NaOH; 4) acetone (1/1 in volume/volume); and 5) water. Panels with medium density were produced (0.70 g/cm³), bonded with 12% (in relation to the particle mass) of urea-formaldehyde adhesive. The... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Musa sp.; Lignocellulosic residues; Chemical treatments. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542014000100005 |
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| Martins,Evelyn Hoffmamm; Vilela,Alan Pereira; Mendes,Rafael Farinassi; Mendes,Lourival Marin; Vaz,Lívia Elisabeth Vasconcellos de Siqueira Brandão; Guimarães Junior,José Benedito. |
| ABSTRACT Brazil is the second largest soybean producer in the world, with a yield of around 96.2 million tons per crop. This high yield leads to a great amount of waste resulting from soybean cultivation, which can reach approximately 41 million tons of waste per year. This material has lignocellulosic properties, which may enable its use as a raw material for particleboard production. Therefore, the objective of this study was to evaluate the use of soybean pods in particleboard production. For particleboard manufacture, wood of the hybrid Eucalyptus urophylla and Eucalyptus grandis was used, added with soybean pods, at proportions of 0%, 25%, 50%, 75% and 100%. For particleboard evaluation, a completely randomized design was used, with five treatments... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Eucalyptus; Soybean pod; Agricultural waste; Physical and mechanical properties.. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542018000200186 |
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