Qualidade de chapas de partículas de &lt;i&gt;Pinus elliottii&lt;/i&gt; coladas com resina poliuretana sob diferentes combinações de pressão e temperatura

Paes, Juarez Benigno; Nunes, Shirley T.; Lahr, Francisco Antônio Rocco; Nascimento, Maria de Fátima do; Lacerda, Roberta Maria de Albuquerque

doi:10.5902/198050983812

Cited by 23 publications

(15 citation statements)

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“…Table 7 shows values obtained by Paes et al (2011), Iwakiri et al (2010, and Okino et al (2000) for the same properties as those evaluated in the present research. Paes et al (2011) produced Pinus elliottii Engelm wood panels with bi-component polyurethane resin (PU). Iwakiri et al (2010) manufactured Pinus caribaea var.…”

Section: Static Bending (Sb)mentioning

confidence: 67%

Production of Particleboards from Hevea brasiliensis Clones and Castor Oil-based Polyurethane Resin

Gava¹,

Müzel²,

Lima³

et al. 2015

BioResources

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The economic exploitation of rubber tree (Hevea brasiliensis) usage is primarily directed toward latex extraction. After the productive life of the rubber tree forest, the managed area is harvested for planting reformulation. The harvested wood is most often used for energy generation purposes. The aim of this work was to study the feasibility of using rubberwood waste and castor oil-based polyurethane resin in the production of particleboards. Homogeneous and heterogeneous panels were made with nominal dimensions of 500 x 500 mm and thicknesses of 10 mm using particles from GT1 and RRIM600 clones of the rubber tree and 12% castor oil-based polyurethane adhesive. The panels were pressed at 140 °C for 12 min with 40 kgf/cm 2 specific pressure. Density, moisture content, thickness swelling, water absorption for 2 and 24 h, static bending, and internal bonding determinations were performed according to the Brazilian Standard (NBR) 14810-3 (2006) for the physicalmechanical panel characterization. The results show that using Hevea brasiliensis in particleboard production is viable. However, multilayer boards exhibited better results.

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Section: Static Bending (Sb)mentioning

confidence: 67%

Production of Particleboards from Hevea brasiliensis Clones and Castor Oil-based Polyurethane Resin

Gava¹,

Müzel²,

Lima³

et al. 2015

BioResources

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“…The mean values of modulus of elasticity (MOE) of the particleboards (Table 2) did not reach the minimum value (2750 MPa) recommended by the A208-1-1999 standard 44 in any of the treatments, and the MOE value obtained at 130°C (2378.5 MPa) was 15.62% lower than that recommended by the aforementioned standard; however, all the values exceeded those recommended by the EN 312:2010 standard. Several researchers have reported low MOE values 16,26,30,41 , attributing this behavior to poor distribution of the adhesive during the compression of particleboards. The static bending tests showed statistical differences between the modulus of rupture (MOR) and of elasticity (MOE) as a function of the temperature.…”

Section: Physical Characterization Of the Particleboardsmentioning

confidence: 99%

“…Paes et al 30 evaluated the combined effect of pressure (2.0, 3.0, and 3.5 MPa) and temperature (50, 60, 90°C) applied to Pinus elliottii wood and COPR particleboard on the response variables: D AP , TS and WA (0-2h, 2-24, 0-24h), MOR, SP and IB. They concluded that the combination of 3.0 MPa and 90°C and of 3.5 MPa and 60°C produced the best results, and that the temperature at which pressure is applied is the most important variable in particleboard quality.…”

Section: Dias and Lahrmentioning

confidence: 99%

Particleboard manufactured from Tauari (Couratari oblongifolia) wood waste using castor oil based polyurethane resin

et al. 2014

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Several wood species from the Amazon region are used in the manufacture of furniture, which leaves behind large amounts of waste (slabs, sawdust, sanding dust and bark), thus causing serious environmental impacts. An interesting alternative for the use of these wastes is the manufacture of particleboards. However, few studies have focused on the behavior of Amazonian tree species and the wastes resulting from production with this type of material. This paper discusses the potential use of Tauari (Couratari oblongifolia) wood waste as a raw material for the production of particleboards, using castor oil-based bi-component polyurethane adhesive. Experimental boards were prepared with dry wood particles and a castor-oil polyurethane adhesive content of 16%. The boards, whose nominal density was 1000 kg⋅m , with higher IB and TS than those specified by the NBR 14810-2 and ANSI A208.1 standards, enabling this product to be classified as high-density particleboard suitable for industrial and commercial use.

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“…particles, commonly used in commercial particleboard. The manufacturing process followed the recommendations detailed by Paes et al (2011). Initially, the raw material was dried at room temperature until it reached a moisture content varying from 3 to 8%, minced in hammer mill, and classified in a vibrating screen with 8.0 mm and 4.0 mm mesh and < 4.0 mm (Collector), obtaining particles with grading of 8.0 > 4.0 mm.…”

Section: Manufacture Of the Particleboardmentioning

confidence: 99%

Technological Characterization and Use of Babassu Residue (Orbygnia phalerata Mart.) in Particleboard

Machado¹,

Andrade²,

Parra-Serrano³

et al. 2017

JAS

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The wood-based panel industry is growing all over the world, and in many countries the raw material is becoming increasingly inadequate and increasingly expensive. Therefore, new inputs are needed to reduce production costs. The residue of babassu palm fruit after nut extraction process is an alternative, due to its fibrous characteristics, the high availability in the large agroindustrial complexes in the North of Brazil and the low cost. Thus the research was: (i) to determine the mechanical characteristics (tensile strength and elasticity), physicochemical characteristics (density, pH, extractives content and chemical composition) and micro-structural of the babassu residue, comparing it with the particles of Pinus sp., used in commercial panels; (ii) to evaluate the quality of panels manufactured with babassu residue by physical conditions (swelling in thickness and water absorption) and mechanical characterization (elasticity and rupture) based on Brazilian Technical Standards (NBR 14810-2: 2013), American (ANSI A208.1: 2009) and European (EN 312: 2003). Statistical analysis of the data was performed with the aid of Infostat software through analysis of variance using Tukey test at the 5% probability level. The babassu residue has technological characteristics that allow its use in particleboard production. However, there are particularities that may compromise its use, such as high silica content and high density. Particleboard made from babassu residue presented mechanical performance above that required by current normative documents. However, for the physical properties, especially for the porosity of the particleboard of babassu, the obtained values were lower than the required minimum.

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Qualidade de chapas de partículas de <i>Pinus elliottii</i> coladas com resina poliuretana sob diferentes combinações de pressão e temperatura

Cited by 23 publications

References 0 publications

Production of Particleboards from Hevea brasiliensis Clones and Castor Oil-based Polyurethane Resin

Production of Particleboards from Hevea brasiliensis Clones and Castor Oil-based Polyurethane Resin

Particleboard manufactured from Tauari (Couratari oblongifolia) wood waste using castor oil based polyurethane resin

Technological Characterization and Use of Babassu Residue (Orbygnia phalerata Mart.) in Particleboard

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