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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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| 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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| 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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| 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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| 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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