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| Registros recuperados: 10 | |
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| Scatolino,Mário Vanoli; Costa,Andrey de Oliveira; Guimarães Júnior,José Benedito; Protásio,Thiago de Paula; Mendes,Rafael Farinassi; Mendes,Lourival Marin. |
| ABSTRACT The wood panel industry is constantly growing, being necessary the innovation in technologies and raw materials to improve the quality of the final product. Considering the shortage and pressure to decrease the dependence of wood, there is an interest in other renewable materials such as agricultural wastes. Among these wastes, coffee parchment is one which deserves notoriety. An alternative use for coffee parchment could be for production of particleboard in association with wood particles. This study aimed to evaluate the feasibility of using coffee parchment for production of particleboard. The following percentages of wastes were used: 0, 10, 20, 30, 40 and 50% in association to eucalyptus wood. The panels were produced with 8% of urea... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Agricultural waste; Lignocellulosic material; Renewable material. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542017000200139 |
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| Abreu,Luciana Barbosa de; Mendes,Lourival Marin; Silva,José Reinaldo Moreira da; Paula,Luana Elis de Ramos e; Mori,Fábio Akira. |
| A indústria moveleira produz uma quantidade de resíduos que, normalmente, é descartada no meio ambiente ou utilizada como combustível em caldeiras e similares, ou apenas queimada. Alternativas para utilização desses resíduos têm sido alvo de pesquisas, destacando-se a confecção de pequenos objetos, na forma de artesanato. Neste trabalho, objetivou-se avaliar os resíduos de indústrias do pólo moveleiro de Ubá/MG. No levantamento quantitativo, constatou-se que as empresas geraram resíduos dos mesmos tipos de painéis de madeira. Os resíduos mais comuns foram de aglomerado e MDF (Medium Density Fiber). Observou-se grande variabilidade das dimensões desses resíduos, principalmente em sua largura. Concluiu-se que alguns resíduos não apresentaram dimensões... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Resíduo de madeira; Aproveitamento de resíduo; Artesanato; Indústria moveleira. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542009000700008 |
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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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| Scatolino,Mário Vanoli; Silva,Danillo Wisky; Mendes,Rafael Farinassi; Mendes,Lourival Marin. |
| Agricultural residues are materials generated in large quantities in Brazil and can accumulate to such extent as to cause environmental problems. Among agricultural residues, maize cob is one worthy of notice, and an alternative use for maize cob would be to produce particleboard panels in association with wood particles. This study aimed to evaluate the feasibility of using maize cob for production of particleboard panels. The following maize cob percentages were used: 0%, 25%, 50%, 75% and 100%, in association with particles of Pinus oocarpa wood. Panels were made with 8% of urea formaldehyde and 1% of paraffin (based on dry weight of particles). For compressing the panels, a pressure of 3.92 MPa was applied at a temperature of 160º C, for 8 minutes.... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Environmental problems; Reuse; Physicomechanical properties; Agricultural residues. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542013000400006 |
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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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| Mendes,Rafael Farinassi; Mendes,Lourival Marin; Guimarães Júnior,José Benedito; Mori,Fábio Akira; César,Antonia Amanda da Silva. |
| Neste trabalho objetivou-se avaliar a influência da incorporação de casca de café nas propriedades físico-mecânicas de painéis aglomerados produzidos com Eucalyptus urophylla S.T. Blake. Os painéis foram produzidos com incorporação de 25, 50 e 75% de casca de café, em três teores da resina fenol-formaldeído (6, 9 e 12%) e 1% de parafina. A densidade nominal dos painéis foi de 0,7 g/cm³ e o ciclo de prensagem compreendeu uma pressão de 3,92 MPa e temperatura de 180ºC por 8 minutos. Pelos resultados obtidos foi possível observar que: as propriedades físicas dos painéis aglomerados apresentam relação linear decrescente com o aumento do teor de resina, e crescente com a porcentagem de casca de café, apresentando maiores valores de absorção de água e inchamento... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Casca-de-café; Aglomerado; Eucalyptus urophylla. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542010000300012 |
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| Faria,Douglas Lamounier; Cruz,Thiago Moreira; Mesquita Júnior,Laércio; Duarte,Paulo Junio; Mendes,Lourival Marin; Guimarães Júnior,José Benedito. |
| ABSTRACT The glued laminated timber (glulam) is a composite material obtained from the bonding of wood laminae arranged with parallel fibers put together. The purpose of this paper was to evaluate the influence of the number of laminae on the mechanical behavior of glulam of Toona ciliata produced with vegetable-based polyurethane adhesive. The glulam beams were produced with lamellae in the dimensions of 6.0 x 1.5 x 120.0 cm, with 3 beams being made per treatment, which were structurally composed by 5, 7 and 9 laminae. The polyurethane adhesive based on castor oil was used, applying a grammage of 350 g m-². For the technological characterization of the wood the moisture in the dry base, bulk density, chemical characterization, compressive strength... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Composite; Wood; Bond resistance; Flexural strength. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542019000100236 |
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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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| Registros recuperados: 10 | |
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