Potencial de utilização da madeira de Sclerolobium paniculatum, Myracrodruon urundeuva e Amburana cearensis para produção de compensados

Lisboa, Fernando Jesus Nogara; Guimarães, Íngrid Luz; Guimarães, Mário; Mendes, Rafael Farinassi; Mendes, Lourival Marin; Protásio, Thiago de Paula

doi:10.18671/scifor.v44n109.12

Cited by 6 publications

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“…Thus, the basic density of pine is at least 1.28 times higher than that of parica, and therefore, this characteristic in uenced the apparent density of the compensated panels. The apparent density values of the panels are close to those found in the literature for Pinus oocarpa panels (0.54 g/cm³) (Lisboa et al 2016) and for parica panels (0.40 g/cm³) (Machado et al 2018).…”

Section: Physical Properties Of Compensated Panelssupporting

confidence: 88%

“…The average values for water absorption did not differ and ranged between 62.43 and 82.84%. Regarding the results presented in the literature, for water absorption of plywood, Lisboa et al (2016) worked with native species of the Brazilian Cerrado and with the species Pinus oocarpa and reported values for water absorption, ranging from 27.43 to 71.58%, being the highest value found for pine. Costa and Menezzi (2017) reported water absorption values of 59.58% for plywood produced with parica blades, whereas Machado et al Machado et al (2018) found values of 86.30%.…”

Section: Physical Properties Of Compensated Panelsmentioning

confidence: 99%

“…This fact was con rmed by the Scott-Knott test among the PIUF compensated panels, which presented higher density (0.55 g/cm³) and lower water absorption (62.43%) compared to the PAUF panel with a density of 11.58 g/cm³ and obtained higher water absorption (82.84%). Lisboa et al (2016) reported a relationship between the apparent density of plywood and water absorption, and in this sense, the increase in density promotes the reduction of empty spaces, impeding/limiting water entry into the wood structure.…”

Section: Pearson´s Correlation For Physical and Mechanical Propertiesmentioning

confidence: 99%

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Influence of different sheet compositions and commercial adhesives on the performance of multilaminated plywood

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Zidanes

Miranda

et al. 2021

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The quality of plywood panels depends on factors such as the forest species and the adhesive used in their production, and understanding the interferences of these factors in the final properties of the plywood is of fundamental importance. The study aimed to develop multilaminate plywood panels with two forest species and two types of adhesive and to evaluate the influences of these factors (forest species and adhesive) on the physical and mechanical properties of the plywood. The panels were produced with sheets of parica and pine with two types of adhesives, urea-formaldehyde and phenol-formaldehyde, with a weight of 150 g/cm². Then, each set was pressed for 10 minutes under a specific pressure of 0.98 MPa at a temperature of 150 °C. Three panels were produced for each type of blade and adhesive, totaling four treatments. The plywood was evaluated for physical properties (humidity, bulk density, and water absorption) and mechanical properties (parallel and perpendicular static flexion and resistance to mechanical shear). The results showed that the forest species had a greater influence on physical and mechanical properties, with the best results being observed for plywood produced with pine. The panels with sheets of parica and phenol-formaldehyde adhesive showed less moisture. The apparent density of the panels should be considered as it positively influenced the mechanical properties and negatively impacted water absorption. It is concluded that the plywood produced can be used for internal and external applications. However, it is indicated for structural purposes as it did not meet the requirements of the NBR 31.000.001/2:2001.

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Section: Physical Properties Of Compensated Panelssupporting

confidence: 88%

Section: Physical Properties Of Compensated Panelsmentioning

confidence: 99%

Section: Pearson´s Correlation For Physical and Mechanical Propertiesmentioning

confidence: 99%

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Influence of different sheet compositions and commercial adhesives on the performance of multilaminated plywood

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Zidanes

Miranda

et al. 2021

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“…Entre os valores de densidade básica (Db) e aparente (Da) houveram poucas variações, ambos com CV abaixo de 5% (Tabela 1). Esses resultados podem ser explicados pelo processo de fabricação do compensado, no qual as lâminas de madeira são distribuídas perpendicularmente entre si, resultando em menor variabilidade nas propriedades físicas e mecânicas dos painéis em comparação com a madeira in natura (Lisboa et al, 2016).…”

Section: Caracterização Tecnológica Do Compensadounclassified

Caracterização tecnológica de painéis engenheirados produzidos com madeira de paricá

Costa

Mascarenhas

Santos

et al. 2020

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A demanda por produtos a base de madeira é crescente, principalmente a partir de florestas plantadas. Dessa forma é possível maximizar o aproveitamento da madeira e obter produtos com resistência e confiabilidade de utilização. Objetivou-se estudar as propriedades tecnológicas d compensado e do LVL (Laminated Veneer Lumber) produzidos com madeira de paricá (Schizolobium amazonicum Huber ex Ducke). Avaliou-se a absorção de água, densidade (básica e aparente), umidade, porosidade, inchamento em espessura e inchamento residual. Utilizou-se 30 corpos de prova de cada tipo de painel, os dados foram analisados por meio de estatística descritiva e pela matriz de correlação de Pearson. No compensado a densidade básica, densidade aparente e porosidade foram de 0,38 g cm-3, 0,44 g cm-3 e 75,47%, respetivamente. Ainda, a umidade elevou-se 20,91% entre 2 e 96 horas de imersão em água. O inchamento residual foi de 3,75% e o inchamento em espessura aumentou 0,81% entre 2 e 96 horas de imersão. No LVL, a densidade básica (0,41 g cm-3) e a densidade aparente (0,48 g cm-3) foram maiores em relação ao compensado e a porosidade foi menor. O inchamento residual (4,24%) e o aumento em inchamento em espessura (1,22%) foram maiores em relação ao compensado. Por apresentarem alta higroscopicidade, as aplicações dos painéis avaliados devem ser preferencialmente em ambientes sem contato com umidade.

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Influence of wood species and adhesive type on the performance of multilaminated plywood

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Zidanes

Miranda

et al. 2021

Environ Sci Pollut Res

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Potencial de utilização da madeira de Sclerolobium paniculatum, Myracrodruon urundeuva e Amburana cearensis para produção de compensados

Cited by 6 publications

References 4 publications

Influence of different sheet compositions and commercial adhesives on the performance of multilaminated plywood

Influence of different sheet compositions and commercial adhesives on the performance of multilaminated plywood

Caracterização tecnológica de painéis engenheirados produzidos com madeira de paricá

Influence of wood species and adhesive type on the performance of multilaminated plywood

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