Painéis OSB fabricados com madeiras da caatinga do nordeste do Brasil

Nascimento, Maria Fátima do; Bertolini, Marília da Silva; Panzera, Túlio Hallak; Christofóro, André Luis; Lahr, Francisco Antônio Rocco

doi:10.1590/s1678-86212015000100005

Cited by 14 publications

(13 citation statements)

References 11 publications

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“…Nascimento et al [25] As can be observed in Table 3, wood species influenced significantly on all OSB physical properties analyzed. For all of them, the panel made with Cambará wood species presented better performances, that is, lower mean values of thickness swelling and water absorption for the evaluated periods.…”

Section: Resultsmentioning

confidence: 79%

“…Strands of each layer were manually distributed, with the strands of surface layers arranged in an oriented way (longitudinal direction of the panel), while particles of the core layer were randomly distributed. e face/core/face ratio of strands was 20 : 60 : 20, due to great results obtained in the literature such as Cloutier [23], Ferro et al [24], and Nascimento et al [25]. e formed mats were pressed for 10 minutes at a temperature of 100°C and specific pressure of 4 MPa (Figure 1(d)).…”

Section: Methodsmentioning

confidence: 99%

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Effect of Alternative Wood Species and First Thinning Wood on Oriented Strand Board Performance

Ferro

Souza

Araujo

et al. 2018

Advances in Materials Science and Engineering

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is study aimed to evaluate the feasibility of using and influence of alternative wood species such as Cambará, Paricá, Pinus, and wood from first thinning operations on oriented strand board (OSB) physical and mechanical properties. Besides that, an alternative resin, castor oil-based polyurethane, was used to bond the particles, due to the better environmental performance when compared to other resins commonly used worldwide in OSB production. Physical properties such as the moisture content, thickness swelling, and water absorption, both after 2 and 24 hours of water immersion, and mechanical properties such as the modulus of elasticity and resistance in static bending, in major and minor axes, and internal bonding were investigated. All tests were performed according to European code EN 300:2006. Results showed the influence of wood species on physical and mechanical properties. Panels made with higher density woods such as Cambará presented better physical performance, while those made with lower density woods such as Pinus presented better mechanical properties. Besides that, strand particle geometry was also influenced on all physical and mechanical properties investigated. erefore, the feasibility of using alternative species and wood from first thinning and with castor oil-based polyurethane resin in OSB production was verified.

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Section: Resultsmentioning

confidence: 79%

Section: Methodsmentioning

confidence: 99%

Effect of Alternative Wood Species and First Thinning Wood on Oriented Strand Board Performance

Ferro

Souza

Araujo

et al. 2018

Advances in Materials Science and Engineering

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“…Then, the cushion was taken to a hydraulic press and submitted to a specific load of 4.5 MPa for ten minutes at 100°Cas described in [23], [26]. After manufacture, the boards underwent cure for 72 hours so as to optimize the binding agent performance.…”

Section: Methodsmentioning

confidence: 99%

Mechanical Properties of OSB Wood Composites with Resin Derived from a Renewable Natural Resource

Souza¹,

Varanda²,

Macedo³

et al. 2014

cmaterials

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OSB (Oriented Strand Board) is the most important development in the industry of wood products in recent years. However, mainly for reasons of cost industries use as adhesive resins that emit formaldehyde. Formaldehyde is considered a hazardous substance and its concentration indoors is restricted in many countries because of its reactivity, toxicity and pungent odor. This study aimed to attest the feasibility of production of OSB from resin with part of your component derived renewable resource (castor oil-based polyurethane) and Pinus sp. The panels were produced technically evaluated by determining their mechanical properties. In comparison to the minimum requirements of the European normative document EN 300 (2006), average values were higher than the panels for structural use in special wet environment (OSB/4) by up to 41% and 58% modulus of elasticity (MOE) and of modulus of rupture (MOR) in bending parallel to the grain, respectively. Adherence internal reached values at least three times higher than OSB/4.

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“…Os produtos à base de madeira tem apresentado crescimento tanto na produção quanto aplicações em diversos segmentos. Isto se deve ao surgimento de novas tecnologias que permitem uso mais racional da madeira, especialmente espécies de rápido crescimento e dimensões reduzidas (NASCIMENTO et al, 2015).…”

Section: Introductionunclassified

“…O fato de a madeira ser uma matéria-prima renovável e necessitar de baixo consumo de energia para ser processada, esta representa vantagens em relação a outros produtos de mesma aplicação (MENDES, 2001). Dentro desse contexto, destaca-se a grande viabilidade de uso de alguns painéis, especialmente na construção civil, podendo-se destacar o Oriented Strand Board -OSB (SOUZA et al, 2014;NASCIMENTO et al, 2015), o Oriented Strand Lumber -OSL e o Laminated Strand Lumber -LSL.…”

Section: Introductionunclassified

Propriedades mecânicas de painéis produzidos com lascas de madeira em três diferentes comprimentos

Chiromito¹,

Campos²,

Christofóro³

et al. 2016

Sci. For.

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ResumoO desenvolvimento da tecnologia na produção de painéis e o aumento da demanda por estes produtos, aliado ao encarecimento da madeira maciça de grandes dimensões, contribuíram por motivar o desenvolvimento da indústria de produtos engenheirados de madeira. A partir desta tendência do mercado madeireiro é que se definiu o objetivo do presente trabalho, que consistiu em avaliar as propriedades mecânicas de painéis de partículas orientadas OSB (Oriented Strand Board), OSL (Oriented Strand Lumber) e LSL (Laminated Strand Lumber), produzidos com madeira de Pinus taeda e resina poliuretana à base de óleo de mamona, avaliando-se a influência do comprimento das lascas (inerentes a cada tipo de painel) nas propriedades de rigidez e de resistência. Os ensaios de flexão foram realizados segundo as normas EN 310-2000 e ASTM D 198-09, para a determinação do módulo de elasticidade (MOE) e do módulo de ruptura (MOR) dos três tipos de painéis avaliados. Os resultados do MOE e do MOR, para os três tipos de painéis, atenderam aos requisitos mínimos da norma EN 310-200, e o aumento do comprimento das lascas influenciou positivamente, de forma significativa, nestas propriedades, apresentando os painéis LSL os melhores resultados, seguidos dos painéis OSL e OSB, respectivamente. Palavras-chave:Módulo de elasticidade; módulo de ruptura; Pinus taeda; painéis estruturais. AbstractThe development of technology in panel production and the increased demand for these products, coupled with the increased cost of solid wood with large dimensions, led to the development of engineered wood products industry. Because of this, the aim of this research was to evaluate mechanical properties in static bending of Oriented Strand Board (OSB), Oriented Strand Lumber (OSL) and Laminated Strand Lumber (LSL), produced with Pinus taeda wood and castor oil based polyurethane resin. The influence of the strand lengths (inherent in each type of panel) in its properties of strength and stiffness was evaluated. Bending test was carried out according to EN 310-2000 and ASTM D 198-09 standards for determining the modulus of elasticity and modulus of rupture of the three types of panels. The results of strength (MOR) and stiffness (MOE) in bending for the three types of panels met the minimum requirements of EN 310-2000 standard, and the increase in the length of the strands influenced positively and significantly these properties. LSL panels presented the best results, followed by the OSL and OSB panels, respectively.

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Painéis OSB fabricados com madeiras da caatinga do nordeste do Brasil

Cited by 14 publications

References 11 publications

Effect of Alternative Wood Species and First Thinning Wood on Oriented Strand Board Performance

Effect of Alternative Wood Species and First Thinning Wood on Oriented Strand Board Performance

Mechanical Properties of OSB Wood Composites with Resin Derived from a Renewable Natural Resource

Propriedades mecânicas de painéis produzidos com lascas de madeira em três diferentes comprimentos

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