PROPRIEDADES FÍSICO-MECÂNICAS DE PAINÉIS AGLOMERADOS COM  Bambusa tuldoides E Pinus taeda

Morais, Weslley Wilker Corrêa; Haselein, Clóvis Roberto; Susin, Felipe; Vivian, Magnos Alan; Morais, Janice Bittencourt Facco

doi:10.5902/1980509820662

Cited by 10 publications

(8 citation statements)

References 2 publications

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“…Comportamento semelhante ao encontrado neste estudo, onde houve um decréscimo nos valores de ligação interna com o aumento das porcentagens de resíduos agroindustriais, foi observado por outros autores como Scatolino et al (2013) e Morais et al (2015).…”

Section: Propriedades Mecânicas Dos Painéis Mdpunclassified

Painéis MDP produzidos com resíduos de extração de celulose

Andrade

Sabino

Terra

et al. 2019

Agraria

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RESUMO: Muitas alternativas vêm sendo estudadas sobre o emprego de resíduos agrícolas, agroindustriais e florestais na produção de painéis aglomerados na tentativa de aproveitar os resíduos oriundos desses ramos, que por muitas vezes geram problemas ambientais devido à sua destinação incorreta. Dessa forma, este trabalho teve por objetivo avaliar o potencial de utilização do resíduo gerado durante o processo de produção da celulose (UKP), na fabricação de painéis MDP (Medium Density Particleboard). As proporções utilizadas para a substituição da madeira de Pinus oocarpa pelo resíduo foram de 15, 30, 45 e 60% (em massa), utilizando o adesivo ureia-formaldeído. Foram realizados os ensaios de densidade aparente (DA), absorção de água após duas e vinte e quatro horas de imersão (AA2h e AA24h), inchamento em espessura após duas e vinte e quatro horas de imersão (IE2h e IE24h), ligação interna (LI), e módulo de elasticidade (MOE) e módulo de ruptura (MOR) à flexão estática. A utilização de partículas de resíduo UKP para a produção de painéis MDP se mostrou prejudicial, uma vez que acarretou na diminuição das propriedades mecânicas e no aumento dos valores de absorção de água e inchamento em espessura.Palavras-chave: material lignocelulósico; propriedades físico-mecânicas; ureia-formaldeído MDP panels produced with pulp extraction residues ABSTRACT: Many alternatives have been studied on the use of agricultural, agroindustrial and forest residues in the production of particleboard in an attempt to take advantage of the residues from these branches, which often generate environmental problems due to their incorrect destination. Thus, the objective of this work was to evaluate the potential of the waste generated during the pulp production process (UKP) in the manufacture of MDP panels. The proportions used for the replacement of Pinus oocarpa wood by the residue were 0, 15, 30, 45 and 60% (by mass), using the urea-formaldehyde binder. The apparent density (DA), water absorption after two and twenty four hours of immersion (AA2h and AA24h), thickness swelling after two and twenty four hours of immersion (IE2h and IE24h), internal LI), and modulus of elasticity (MOE) and modulus of rupture (MOR) to static bending. The use of UKP residue particles for the production of MDP panels proved to be detrimental since it resulted in a decrease in mechanical properties and an increase in water absorption values and thickness swelling.

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Section: Propriedades Mecânicas Dos Painéis Mdpunclassified

Painéis MDP produzidos com resíduos de extração de celulose

Andrade

Sabino

Terra

et al. 2019

Agraria

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“…Research has already been conducted with the objective of producing experimental panels with bamboo associated or not with other lignocellulosic materials or varying some production parameter (Valarelli et al, 2013;Valarelli et al, 2014;Zaia et al, 2015, Dinhane et al, 2015Melo et al, 2015;Morais et al, 2015;Almeida et al, 2017;Abdulkareem & Adeniyi, 2017). The species Dendrocalamus asper (Schult f.) Backer ex Heyne was used for the present experiment due to its good resistance properties.…”

Section: Introductionmentioning

confidence: 99%

Properties of particleboards manufactured from bamboo (Dendrocalamus asper)

Brito

Júnior

2020

Agraria

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Bamboo is a source of industrial raw material with wide geographical distribution. Brazil has good soil and climate conditions for its cultivation, in addition to existing reserves. Advantages of bamboo include: versatility, fast growth and good strength properties. One way of using this material would be as a raw material for manufacturing particleboards. Within this context, this article addresses an evaluation of the physical and mechanical properties of particleboards manufactured from bamboo particles (Dendrocalamus asper (Schult f.). Backer ex Heyne. Particles with 0.50 and 0.85mm granulometry and two conditions (control and treatment by immersion in hot water (70 ± 5 °C) for two hours) were used. Twelve homogeneous particleboards bonded with urea-formaldehyde adhesive with 10% solids were manufactured and the predetermined nominal density for all panels was 650 kg m-3. The properties analyzed were: water absorption, swelling and non-return rate in thickness, density profile, rupture modulus, elastic modulus, screw withdrawal and internal adhesion. Panels consisting of 0.50 mm granulometry showed higher water absorption rates, while panels made of particles treated with hot water and 0.85 mm granulometry showed higher swelling rates and non-return thickness. The panels made of treated particles showed higher density profile values in both layers of the panels. The granulometry did not influence the mechanical properties of the panels, and those with treated particles exhibited significant performance for the surface and top screw withdrawal properties, and internal adhesion. This last mentioned property reached the minimum value required by the standard. The results showed that it is feasible to use bamboo to manufacture particleboards, but it is necessary to adjust some variables such as nominal density, pressing parameters, adhesive content or the inclusion of a less dense material in the composition of the panels.

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“…In this context, MORAIS et al (2015) pointed out that the globalized market requires the research for new materials to produce reconstituted panels, which should enable cost reduction, superior technical efficiency or equivalent to raw materials traditionally used by industry, and low environmental impacts. In addition, new raw materials as an Cunha et al alternative to the most common species, such as Pinus spp.…”

Section: Introductionmentioning

confidence: 99%

“…Among them, the bamboo species, play an increasingly important role in reducing pressure on forest resources and are considered by many as the substitute for wood (MERA et al, 2014). According to MORAIS et al (2015), the replacement of wood by bamboo species, or incorporation of these species into wood products has already occurred in countries such as China, Philippines and Colombia, since it is a lignocellulosic material with properties and quality like wood.…”

Section: Introductionmentioning

confidence: 99%

Technological properties of particleboards produced using mixture of pines and bamboo

et al. 2019

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This paper aimed to evaluate the technological properties of particleboards produced with particles of unconventional species, bamboo of the species Phyllostachys edulis, and of the genus traditionally used by the sector for the production of the particulate panels in Brazil, Pinus spp.The bamboo splints of 3 years old were collected in Frei Rogério, Santa Catarina, being transformed into particles in a mill hammer, while the particles of Pinus spp. were collected from the industrial process of MDP production in Bonet Madeiras e Papéis Ltda Company in Santa Cecília, Santa Catarina. The company used eight-year-old logs of P. taeda and P. elliottii from the thinning process, without distinction of the species. The experiment was composed of five compositions with mixing the bamboo and wood particles in different proportions ((T1)100:0%; (T2)75:25%; (T3)50:50%; (T4)25:75%; (T5)0:100%). The panels were produced nominal density of 700 kg / m³ and pressing cycle of 160ºC and 40 kgf/cm² for 8 minutes. Results reporting physical and mechanical properties of panels were evaluated through Analysis of Variance and Tukey´s Test at 95% probability. The results evidenced that bamboo particles presented potential for the production of particleboard. The most promising results were presented with the addition of 50% of bamboo in the panel composition (T3), mainly by means observed for dimensional stability, as for strength and stiffness. Values of internal bond presented significantly lower averages with the addition of more than 25% of bamboo.

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PROPRIEDADES FÍSICO-MECÂNICAS DE PAINÉIS AGLOMERADOS COM Bambusa tuldoides E Pinus taeda

Cited by 10 publications

References 2 publications

Painéis MDP produzidos com resíduos de extração de celulose

Painéis MDP produzidos com resíduos de extração de celulose

Properties of particleboards manufactured from bamboo (Dendrocalamus asper)

Technological properties of particleboards produced using mixture of pines and bamboo

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