Produção de painéis de madeira aglomerada de Grevillea robusta A. Cunn. ex R. Br.

Iwakiri, Setsuo; Shimizu, J. Y.; Silva, José de Castro; Menezzi, Cláudio Henrique Soares Del; Puehringher, Carlos Augusto; Venson, Ivan; Larroca, Christine

doi:10.1590/s0100-67622004000600013

Cited by 32 publications

(26 citation statements)

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“…The mean values of modulus of elasticity (MOE) of the particleboards (Table 2) did not reach the minimum value (2750 MPa) recommended by the A208-1-1999 standard 44 in any of the treatments, and the MOE value obtained at 130°C (2378.5 MPa) was 15.62% lower than that recommended by the aforementioned standard; however, all the values exceeded those recommended by the EN 312:2010 standard. Several researchers have reported low MOE values 16,26,30,41 , attributing this behavior to poor distribution of the adhesive during the compression of particleboards. The static bending tests showed statistical differences between the modulus of rupture (MOR) and of elasticity (MOE) as a function of the temperature.…”

Section: Physical Characterization Of the Particleboardsmentioning

confidence: 99%

“…The literature contains several studies on the manufacture of particleboards using particles or fibers from different lignocellulosic sources and synthetic binders or adhesives 7,[13][14][15][16][17][18][19][20] to bond the particles, often by applying heat 21 . Castor oil-based bi-component polyurethane adhesive 22 has been widely used because it is renewable, biodegradable and has a low degree of toxicity [23][24][25] .…”

Section: Introductionmentioning

confidence: 99%

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Particleboard manufactured from Tauari (Couratari oblongifolia) wood waste using castor oil based polyurethane resin

et al. 2014

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Several wood species from the Amazon region are used in the manufacture of furniture, which leaves behind large amounts of waste (slabs, sawdust, sanding dust and bark), thus causing serious environmental impacts. An interesting alternative for the use of these wastes is the manufacture of particleboards. However, few studies have focused on the behavior of Amazonian tree species and the wastes resulting from production with this type of material. This paper discusses the potential use of Tauari (Couratari oblongifolia) wood waste as a raw material for the production of particleboards, using castor oil-based bi-component polyurethane adhesive. Experimental boards were prepared with dry wood particles and a castor-oil polyurethane adhesive content of 16%. The boards, whose nominal density was 1000 kg⋅m , with higher IB and TS than those specified by the NBR 14810-2 and ANSI A208.1 standards, enabling this product to be classified as high-density particleboard suitable for industrial and commercial use.

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Section: Physical Characterization Of the Particleboardsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Particleboard manufactured from Tauari (Couratari oblongifolia) wood waste using castor oil based polyurethane resin

et al. 2014

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“…Resultando similaridade com Brito e Peixoto (2000), Iwakiri et al (2000), Maciel (2004), Dacosta et al (2005), Iwakiri et al (2004), Pedrazzi et al (2005) e Colli et al (2010).…”

Section: Ligação Interna (Li)mentioning

confidence: 53%

“…Entretanto, os autores relatam outro fator de reconhecida influência sobre esse parâmetro, que é a quantidade e a qualidade do adesivo utilizado na manufatura das chapas. Iwakiri et al (2004) acrescentaram que essa diferença de comportamento pode ser atribuída à menor disponibilidade de adesivo em função do aumento da quantidade de partículas. Esta menor disponibilidade, muitas vezes, contribui para o não aumento desta propriedade mecânica com o acréscimo da ME.…”

Section: Ligação Interna (Li)unclassified

Avaliação Das Propriedades Físico-Mecânicas De Painéis De Casca De Arroz E Adesivo Tanino-Formaldeído

et al. 2017

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RESUMOA presente investigação tem como objetivo avaliar o uso da casca de arroz para a fabricação de chapas aglomeradas, coladas com tanino-formaldeído. Para tanto, foram utilizadas cascas de arroz na forma natural ou processadas em moinho de martelo, compactadas a diferentes massas específicas (0,65, 0,95 e 1,15 g/cm³) e aplicando-se teores de adesivos de 7, 10 e 13% (com base no peso seco das partículas), totalizando 54 chapas. A prensagem foi realizada em prensa hidráulica a 30 kgf/cm², por 8 minutos, a uma temperatura de 180°C. Os ensaios físicos realizados foram teor de umidade, massa específica, absorção d'água e inchamento em espessura; e mecânicos, tais como flexão estática, arrancamento de parafuso e ligação interna. De modo geral, a utilização da casca de arroz proporcionou uma redução na resistência física e mecânica das chapas, em relação às produzidas com partículas de madeira encontradas na literatura. Todos os tratamentos ficaram abaixo dos valores mínimos requeridos pelas normas de comercialização para os ensaios físicos e mecânicos, somente os de 13% de adesivo apresentaram requisitos satisfatórios quanto à estabilidade dimensional. Os resultados indicam que o material não pode ser utilizado em condições que exijam grandes esforços estruturais. Palavras-chave: beneficiamento do arroz; resíduos; propriedades físico-mecânicas; estabilidade dimensional. ABSTRACTRice husk, waste produced by processing of rice, has become a problem of environmental, economic and public health. As a result, this research aims to explore the potential of these underutilized resources in Brazil in the development of particleboard glued with tannin-formaldehyde. Therefore, panels were manufactured with rice husk compacted at different density (0.65, 0.95 and 1.15 g/ cm³), levels of adhesives (7, 10 and 13%) and particles types (natural and processed), totaling 54 panels. The pressing was carried in hydraulic press at 30 kgf /cm² for 8 minutes at 180°C of temperature. The physical tests performed were moisture content, density, water absorption and thickness swelling while mechanical properties evaluated were static bending, screw withdrawal and internal bond. In general, the use of rice hulls prouced a reduction in strength

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“…The application of agro-industrial residues as an input of these products is possible due to the chemical similarity with the wood, especially the hardwoods that have lower lignin content and higher pentosan hemicellulose content (Iwakiri et al, 2004).…”

Section: Introductionmentioning

confidence: 99%

Technological Characterization and Use of Babassu Residue (Orbygnia phalerata Mart.) in Particleboard

Machado¹,

Andrade²,

Parra-Serrano³

et al. 2017

JAS

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The wood-based panel industry is growing all over the world, and in many countries the raw material is becoming increasingly inadequate and increasingly expensive. Therefore, new inputs are needed to reduce production costs. The residue of babassu palm fruit after nut extraction process is an alternative, due to its fibrous characteristics, the high availability in the large agroindustrial complexes in the North of Brazil and the low cost. Thus the research was: (i) to determine the mechanical characteristics (tensile strength and elasticity), physicochemical characteristics (density, pH, extractives content and chemical composition) and micro-structural of the babassu residue, comparing it with the particles of Pinus sp., used in commercial panels; (ii) to evaluate the quality of panels manufactured with babassu residue by physical conditions (swelling in thickness and water absorption) and mechanical characterization (elasticity and rupture) based on Brazilian Technical Standards (NBR 14810-2: 2013), American (ANSI A208.1: 2009) and European (EN 312: 2003). Statistical analysis of the data was performed with the aid of Infostat software through analysis of variance using Tukey test at the 5% probability level. The babassu residue has technological characteristics that allow its use in particleboard production. However, there are particularities that may compromise its use, such as high silica content and high density. Particleboard made from babassu residue presented mechanical performance above that required by current normative documents. However, for the physical properties, especially for the porosity of the particleboard of babassu, the obtained values were lower than the required minimum.

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Produção de painéis de madeira aglomerada de Grevillea robusta A. Cunn. ex R. Br.

Cited by 32 publications

References 1 publication

Particleboard manufactured from Tauari (Couratari oblongifolia) wood waste using castor oil based polyurethane resin

Particleboard manufactured from Tauari (Couratari oblongifolia) wood waste using castor oil based polyurethane resin

Avaliação Das Propriedades Físico-Mecânicas De Painéis De Casca De Arroz E Adesivo Tanino-Formaldeído

Technological Characterization and Use of Babassu Residue (Orbygnia phalerata Mart.) in Particleboard

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