Utilização de Cinco Espécies de Eucalyptus para a Produção de Painéis OSB

Rosa, Thiago Souza da; Trianoski, Rosilani; Iwakiri, Setsuo; Bonduelle, Ghislaine Miranda; Souza, Huan Pablo de

doi:10.1590/2179-8087.004916

Cited by 6 publications

(6 citation statements)

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“…Averages followed by the same letter in the column did not differ significantly at 5% probability. for (E. camaldulensis x E. grandis) x Eucalyptus urophylla clones, while Rosa et al (2017), studying seven-year-old Eucalyptus urophylla x Eucalyptus grandis clones, found lower values (0.472 g cm -3 ) compared to those in the present study.…”

Section: Resultscontrasting

confidence: 94%

Influence of Wood Physical Properties on Charcoal from Eucalyptus spp.

2018

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The use of wood in the form of charcoal for energy production, has great economic importance in Brazil. In this context, the study of variables and mechanisms that affect charcoal quality is essential. The present study aimed to verify the influence of some physical properties of Eucalyptus wood on the quality and yield of the produced bioreducer. We used three commercial Eucalyptus clones, cultivated for use in the steel industry, determining wood density and shrinkage, density and immediate chemistry of the charcoal produced and the charcoal gravimetric yield. The data was submitted to Pearson's correlation analysis. Correlations between wood density and apparent charcoal density as well as charcoal ash content were observed. All clones presented characteristics suitable for the production of charcoal for the steel industry, with emphasis on the hybrid E. urophylla x E. grandis.

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Section: Resultscontrasting

confidence: 94%

Influence of Wood Physical Properties on Charcoal from Eucalyptus spp.

2018

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“…In comparison with OSBs, the present study's results were similar to those obtained by Rosa et al (2017), whose mean values for the OSB panels of five Eucalyptus species were between 0.45 MPa and 0.56 MPa.…”

Section: Discussionsupporting

confidence: 89%

“…For thickness swelling, the Eucalyptus badjensis mixed particleboard / OSB panels of the present study exhibited greater results than those obtained by Rosa et al (2017), whose values, for the OSB panels of five species of Eucalyptus, were between 2.09% and 2.46% for thickness swelling after 2 hours and between 8.56% and 10.44% for thickness swelling after 24 hours. In comparison with the literature's results for particleboard panels, the mean values obtained were lower than those obtained by Iwakiri et al (2000), whose mean values, for particleboard panels of Eucalyptus grandis, were of 12.4% and 24.02% for thickness swelling after 2 and 24 hours, respectively.…”

Section: Discussioncontrasting

confidence: 80%

“…The average water absorption values of the Eucalyptus badjensis mixed particleboard / OSB panels thermally modified under different temperatures and exposure times were higher than those obtained by Rosa et al (2017), whose mean values, for OSBs of five Eucalyptus species, were between 10.32% and 11.37% for water absorption after 2 hours and between 31.66% to 36.58% for water absorption after 24 hours. In comparison with the literature values for particleboards, the mean water absorption values were lower in comparison with those obtained by Cunha et al (2014), whose mean values for Eucalyptus benthamii particleboard panels were of 15.9% and 39.9% for water absorption after 2 and 24 hours, respectively.…”

Section: Discussioncontrasting

confidence: 61%

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INFLUENCE OF THERMAL MODIFICATION ON THE PHYSICAL AND MECHANICAL PROPERTIES OF Eucalyptus badjensis MIXED PARTICLEBOARD / OSB PANELS

Pereira¹,

Iwakiri²,

Trianoski³

et al. 2021

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The objective of this research was to evaluate the effects of thermal modifications, at different temperatures and exposure times, on the technological properties of mixed particleboard / OSB panels made out of Eucalyptus badjensis. Using the wood of Eucalyptus badjensis, Particleboard, OSB and mixed Particleboard/OSB panels (control and thermally modified) were manufactured. The mixed panels’ thermal modification was carried out under three temperatures (180ºC, 200ºC and 220ºC) and two exposure times (10 minutes and 12 minutes). For the panels’ manufacturing, 6% of phenol-formaldehyde adhesive and 1% of paraffin were employed, which was calculated based on the particles’ dry mass. The water absorption and thickness swelling properties were evaluated after 2 and 24 hours of immersion, in addition to the panels’ modulus of elasticity, modulus of rupture and internal bond. Based on the results, we were able to conclude that the thermal modification affected most of the physical properties positively. From the different exposure times studied, the most effective one was the period of 12 minutes, especially for water absorption after 2 hours, which caused a reduction of 11.27%. In turn, the most effective temperature was of 220ºC, highlighting the thickness swelling after 24 hours, which caused a swelling decrease of 23.76% in comparison with the control panels. Regarding the mechanical properties, the thermal modification, in terms of the studied exposure times and temperatures, did not affect the results of the mixed particleboard /OSB panels.

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“…Os painéis OSB podem ser utilizados na fabricação de elementos estruturais para construção civil (vigas do tipo I-joints; lajes diafragmas; e fechamento de paredes estruturais autoportantes). Os painéis MDP são utilizados como matéria-prima para fabricação de móveis, entre outros artefatos da indústria do mobiliário (IWAKIRI et al, 2005(IWAKIRI et al, , 2014SANTOS et al, 2014;NASCIMENTO et al, 2015;ROSA et al, 2017).…”

Section: Introductionunclassified

Painel híbrido OSB/MDP de madeira Pinus taeda e resina poliuretana à base de óleo de mamona

et al. 2019

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Resumo Os painéis reconstituídos à base de madeira são uma alternativa para utilização na construção civil e na indústria do mobiliário. Dentre os tipos de painéis, destacam-se o OSB (Oriented Strand Board) e o MDP (Medium Density Particleboard). O objetivo desta pesquisa foi avaliar as propriedades físicas e mecânicas de painéis híbridos OSB/MDP, visando uma alternativa de uso em novo sistema fabril com o reaproveitamento de partículas de madeira. Foram fabricados painéis OSB, híbridos e MDP em escala laboratorial e determinadas suas respectivas propriedades físicas e mecânicas de acordo com as normas EN 300:2006 e ABNT NBR 14.810-2:2013. A influência dos tipos de painéis nas propriedades foi investigada pela análise de variância (ANOVA), os testes de normalidade de Anderson-Darling (AD) e de homogeneidade de variâncias de Bartlett (Bt) foram utilizados na verificação da validade das hipóteses da ANOVA. O teste de comparações múltiplas de Tukey foi utilizado para o agrupamento dos níveis do fator (tipo de painel) nas propriedades avaliadas. Os valores obtidos para as propriedades físicas e mecânicas dos painéis híbridos OSB/MDP alcançaram os valores mínimos determinados pelas normas vigentes. Os painéis híbridos apresentaram propriedades que permitem sua aplicação estrutural e em ambientes úmidos.

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Utilização de Cinco Espécies de Eucalyptus para a Produção de Painéis OSB

Cited by 6 publications

References 4 publications

Influence of Wood Physical Properties on Charcoal from Eucalyptus spp.

Influence of Wood Physical Properties on Charcoal from Eucalyptus spp.

INFLUENCE OF THERMAL MODIFICATION ON THE PHYSICAL AND MECHANICAL PROPERTIES OF Eucalyptus badjensis MIXED PARTICLEBOARD / OSB PANELS

Painel híbrido OSB/MDP de madeira Pinus taeda e resina poliuretana à base de óleo de mamona

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