Propriedades físicas de painéis aglomerados de madeira produzidos com adição de película de polipropileno biorientado

Macedo, Laurenn Borges de; Ferro, Fabiane Salles; Varanda, Luciano Donizeti; Cavalheiro, Raquel Schmitt; Christofóro, André Luis; Lahr, Francisco Antônio Rocco

doi:10.1590/1807-1929/agriambi.v19n7p674-679

Cited by 17 publications

(16 citation statements)

References 11 publications

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“…Two types of adhesives were used: polyurethane based on castor oil (PU) and melamine formaldehyde (MF). The PU adhesive was adopted due to its good performance obtained in previous studies, conducted at the LaMEM/SET, with wood panels (Bertolini et al, 2014;Macedo et al, 2015;Nascimento et al, 2017). This is an adhesive of mostly natural and renewable origin.…”

Section: Methodsmentioning

confidence: 99%

Physical performance of particleboards using Castor oil-based adhesive

Varanda¹,

Yamaji²,

Santos³

et al. 2018

Rev. bras. eng. agríc. ambient.

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Reconstituted wood panels are widely used in various branches of the wood industry, such as in the furniture sectors and various segments of urban and rural construction. In Brazil, agricultural and forestry residues are abundantly generated, making feasible the study, development and application of alternative and sustainable materials, produced from the use of these wastes. The aim of this study was to produce high-density homogenous panels with wood residues of Pinus elliottii and oat hulls (Avena sativa), pressed with two types of adhesive, castor oil-based polyurethane and melamine formaldehyde, and to evaluate the physical performance of these panels. The physical performance of the panels was evaluated based on the ABNT NBR 14810: 2006, ANSI A208.1: 1999 and BS EN 312: 2003 standards. Analysis of variance (ANOVA) was performed to test the influence of the factors percentage of oat hull, percentage of adhesive and type of adhesive, and the interactions between these factors on the physical properties of the panels. The results indicated physical properties, in some treatments superior to the requirements stipulated by the consulted standards. It was concluded that the panels produced with the castor oil-based polyurethane adhesive showed better physical performance when compared with the panels produced with the melamine formaldehyde adhesive.

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Section: Methodsmentioning

confidence: 99%

Physical performance of particleboards using Castor oil-based adhesive

Varanda¹,

Yamaji²,

Santos³

et al. 2018

Rev. bras. eng. agríc. ambient.

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“…Urea-formaldehyde resin (pH = 7.8; solids content = 65%; density = 1.27 g/cm³) was used as adhesive. In order to replace the urea-formaldehyde, the epoxy ink waste and the polyhydroxybutyrate polymer (BTH), both in the solid state and in the form of very fine powders, were used in the proportions shown in Tables 1 and 2, respectively. About the parameters presented in Table 1 (to particleboards with epoxy ink waste), the pressure used (4 MPa) was according to Nascimento et al (2017), Macedo et al (2015) and Bertolini et al, (2014). For pressing time, the minimum necessary to complete the melting of the epoxy ink waste at the adopted temperatures was used.…”

Section: Methodsmentioning

confidence: 99%

Particleboards Produced With Epoxy Ink Waste and BTH Polymer as Adhesives

et al. 2018

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The aim of this research was to analysis the feasibility of production of wood particleboard with two alternative adhesives: epoxy ink waste and polyhydroxybutyrate polymer (BTH). Particleboard were produced with Pinus sp. wood specie wastes from sawmill process. For each alternative adhesive was proposed different combinations of parameters: time and temperature of press, pressure; alternative adhesive content and mass of wood particles. Two alternative adhesive contents were adopted, 10% and 20% replacing ureaformaldehyde adhesive. Mechanical properties (perpendicular tensile strength, pullout strengths of screw on face and top; modulus of elasticity and rupture) were determined according to ABNT NBR 14810:3 Brazilian Standard Code. The obtained results were compared to ABNT NBR 14810:3 and ANSI A.2018:1 Standard Codes requirements values. Particleboards produced with epoxy ink waste showed perpendicular tensile strength according to the minimum Standards requirements values. All proposed combinations to manufacture BTH polymer particleboards didn't show satisfactory mechanical properties in comparison to the Standard Codes values. Other combinations of wood species, time, pressure and temperature, epoxy ink waste and BTH polymer contents should be studied so that the requirements can be met.

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“…Os painéis de partículas aglomeradas, fabricados a partir de material lignocelulósico e porcentagens de embalagens plásticas (polipropileno) em sua matriz constituinte, têm grande potencial para usos específicos na indústria moveleira e construção civil (Macedo et al, 2015). Do mesmo modo, Talgatti et al (2017) indicam a incorporação do poliestireno como alternativa para aumentar a qualidade chapas aglomeradas, quanto à densidade, módulos de ruptura/elasticidade e inchamento.…”

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“…Nesse cenário, inserem-se alternativas com elevado potencial para desenvolvimento de novos produtos. Produtos decorrentes de consórcios entre diversos materiais lignocelulósicos e de resíduos da atividade humana, que não possuem uma reciclagem adequada e que são de difícil decomposição (Macedo et al, 2015).…”

Section: Introductionunclassified

Resistência biológica de painéis aglomerados produzidos a partir de resíduos agrícolas e urbanos

Oliveira

Silveira

Baldin

et al. 2018

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CIÊNCIAS FLORESTAIS (FOREST SCIENCES) RESUMO: O presente estudo teve por objetivo avaliar a resistência biológica de painéis aglomerados, confeccionados a partir de resíduos agrícolas (engaço-uva, capim annoni), urbanos (embalagem cartonada, plástico) e florestal (madeira Pinus sp.), ao ataque de fungo causador da podridão branca, Pycnoporus sanguineus. Para as avaliações foi realizado o ensaio de apodrecimento acelerado segundo as recomendações da norma americana ASTM D 2017.Os corpos de prova foram retirados do centro dos painéis, com dimensões de 2,0 x 2,0 cm, totalizando 25 amostras, divididas em 5 tratamentos. Em seguida determinouse a resistência ao ataque do fungo por meio da perda de massa. As médias a 5% de significância diferiram estaticamente, entre 3 tratamentos pelo teste Duncan. A microscopia de varredura (MEV) permitiu a visualização das partículas dos painéis antes e após o ataque do fungo, facilitando a compreensão dos resultados obtidos na perda de massa. O painel 100% madeira de pinus, classificou-se como não resistente, sendo que a adição de porcentagens de resíduos agrícolas (engaço, capim annoni) e urbanos (cartonadas e plástico) melhorou a classe de resistência dos painéis, passando a ser resistentes e muito resistentes, respectivamente.

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Propriedades físicas de painéis aglomerados de madeira produzidos com adição de película de polipropileno biorientado

Cited by 17 publications

References 11 publications

Physical performance of particleboards using Castor oil-based adhesive

Physical performance of particleboards using Castor oil-based adhesive

Particleboards Produced With Epoxy Ink Waste and BTH Polymer as Adhesives

Resistência biológica de painéis aglomerados produzidos a partir de resíduos agrícolas e urbanos

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