PHYSICAL AND MECHANICAL PROPERTIES OF PARTICLEBOARD FROM Eucalyptus grandis PRODUCED BY UREA FORMALDEHYDE RESIN WITH SiO2 NANOPARTICLES

Valle, Ana C. M.; Prates, Gláucia Aparecida; Goveia, Danielle; Campos, Cristiane Inácio de

doi:10.1590/1809-4430-eng.agric.v40n3p289-293/2020

Cited by 8 publications

(8 citation statements)

References 16 publications

(20 reference statements)

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“…The particleboard with the highest density (0.75 g / cm 3 ) and the maximum quantity of adhesive (11 %) had the highest mechanical strength values (MOR = 23.17, MOE = 2.941, and IB = 0.55). Liao et al (2016), Cebu (2019), andValle et al (2020) similarly demonstrated a direct influence of increasing density and adhesive quantity on particleboard mechanical qualities. In addition to the non-fit, the model was evaluated through a graph of predicted and actual values (Fig.…”

Section: Resultsmentioning

confidence: 95%

Investigating the effect of particle slenderness ratio on optimizing the mechanical properties of particleboard using the response surface method

Arabi

Haftkhani

Pourbaba

2023

BioRes

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Restricted formaldehyde gas emissions and a scarcity of lignocellulosic raw materials have particleboard companies in Iran concerned about raw materials and adhesive use. The particle slenderness ratio is one of the main parameters that leads to the required mechanical characteristics of particleboard, together with the simultaneous decrease of density (raw materials) and the quantity of adhesive. The objective of this study was to evaluate the mechanical properties of particleboard composed of poplar particles with variables of density, adhesive quantity, and slenderness ratio using response surface technique. The variables were then optimized for the examined responses according to the EN 312-3 (1993) standard for the manufacturing of particleboard for domestic use as well as home and office furniture. Particleboard with minimum allowable properties according to EN 312-3 (MOR = 11 MPa, MOE = 1.6 GPa, and IB = 0.35 MPa) with a density of 0.65 g/cm3, adhesive percentage of 10.54, and a slenderness ratio of 37.5 can be produced, according to optimization findings. Through raising the density to 0.69 g/cm3 and the slenderness ratio to 46.99, the quantity of adhesive utilized in particleboard manufacturing could be decreased from 10.54 to 8.9% while keeping the minimum allowable resistances of EN 312-3 (1993) standard.

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Section: Resultsmentioning

confidence: 95%

Investigating the effect of particle slenderness ratio on optimizing the mechanical properties of particleboard using the response surface method

Arabi

Haftkhani

Pourbaba

2023

BioRes

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“…And the combination of 0.5% of zinc oxide nanoparticles with melamine-formaldehyde resulted in the best treatment of panels. Valle et al [17], evaluated the impact of SiO 2 nanoparticles on the mechanical and physical properties of wood particleboard. SiO 2 nanoparticles were added to urea-formaldehyde to produce boards.…”

Section: Introductionmentioning

confidence: 99%

Effect of Alumina Nano-Particles on Physical and Mechanical Properties of Medium Density Fiberboard

et al. 2020

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This research aims to explore the effects of nanoparticles such as alumina (Al2O3) on the physical and mechanical properties of medium density fiberboards (MDF). The nanoparticles are added in urea-formaldehyde (UF) resin with different concentration levels e.g., 1.5%, 3%, and 4.5% by weight. A combination of forest fibers such as Populus Deltuidess (Poplar) and Euamericana (Ghaz) are used as a composite reinforcement due to their exceptional abrasion confrontation as well as their affordability and economic value with Al2O3-UF as a matrix or nanofillers for making the desired nanocomposite specimens. Thermo-gravimetric analysis (TGA) and thermal analytical analysis (TAA) in the form of differential scanning calorimetry (DSC) are carried out and it has been found that increasing the percentage of alumina nanoparticles leads to an increase in the total heat content. The mechanical properties such as internal bonding (IB), modulus of elasticity (MOE) and modulus of rupture (MOR), and physical properties such as density, water absorption (WA), and thickness swelling (TS) of the specimens have been investigated. The experimental results showed that properties of the new Nano-MDF are higher when compared to the normal samples. The results also showed that increasing the concentration of alumina nanoparticles in the urea-formaldehyde resin effects the mechanical properties of panels considerably.

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“…Segundo Martins (2015), as propriedades das nanopartículas podem variar dependendo de sua forma, tamanho (de 1 nm a 100 nm), estado, meio e superfície. Valle et al (2020) verificaram que a adição de nanopartículas de óxido de silício em painéis MDP reduziu o inchamento e melhorou a estabilidade dimensional dos painéis. Alabduljabbar et al (2020) estudaram os efeitos da adição de nanopartículas de alumina em painéis MDF e verificaram melhora nas propriedades físicas.…”

Section: Introductionunclassified

“…Alabduljabbar et al (2020) estudaram os efeitos da adição de nanopartículas de alumina em painéis MDF e verificaram melhora nas propriedades físicas. Com base nos estudos recentes, não se verifica prejuízo no processo produtivo pela adição de nanopartículas, tendo em vista que em todos os estudos a mistura ocorre na etapa de preparação dos aditivos para a colagem (VALLE et al, 2020;PUGAZHENTHI;ANAND, 2021;CHIROMITO et al, 2016). Kumar et al (2013) analisaram a influência da incorporação de micropartículas de óxido de alumínio (Al2O3), também conhecido como alumina, nas propriedades físicas e mecânicas de painéis MDF feitos com ureiaformaldeído (UF), adicionando teores de 1,0%, 2,5% e 5,0% de óxido em relação à massa de adesivo UF.…”

Section: Introductionunclassified

Análise do efeito da incorporação de nanopartículas de ZnO nas propriedades físicas e mecânicas de painéis MDF

et al. 2023

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Resumo O painel MDF pode sofrer mudanças dimensionais, o que compromete seu desempenho. Uma forma de melhorar o desempenho do painel é incorporar nanopartículas. A presente pesquisa estudou o efeito do uso de nanopartículas de óxido de zinco em diferentes teores (0%, 0,5% e 1,0%) em painéis MDF fabricados com resina ureia-formaldeído (UF), resina melamina-formaldeído (MF) e fibras de Eucalyptusgrandis. Também avaliou o uso de modelos de regressão para estimar propriedades físicas e mecânicas em função do adesivo utilizado e do teor de ZnO incorporado. Os tratamentos com resina MF apresentaram melhor desempenho quando comparados com os tratamentos que utilizaram adesivo UF. O teor ótimo para adição de nanopartículas foi o de 0,5%. O teor de 1,0% levou ao aumento no teor de umidade, ao inchamento e à diminuição dos valores de MOR e MOE, o que pode ser justificado pela cura acelerada e pelo superaquecimento das camadas externas, prejudicando a cura das camadas interiores. O modelo com maior precisão foi o estimador da densidade aparente, sendo os fatores resina, ZnO e interação significativos.

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PHYSICAL AND MECHANICAL PROPERTIES OF PARTICLEBOARD FROM Eucalyptus grandis PRODUCED BY UREA FORMALDEHYDE RESIN WITH SiO2 NANOPARTICLES

Cited by 8 publications

References 16 publications

Investigating the effect of particle slenderness ratio on optimizing the mechanical properties of particleboard using the response surface method

Investigating the effect of particle slenderness ratio on optimizing the mechanical properties of particleboard using the response surface method

Effect of Alumina Nano-Particles on Physical and Mechanical Properties of Medium Density Fiberboard

Análise do efeito da incorporação de nanopartículas de ZnO nas propriedades físicas e mecânicas de painéis MDF

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