Medium Density Particleboard (MDF) Produced with Pinus caribaea Fibers and Castor Oil Based Polyurethane Resin

2014 ◽  
Vol 1025-1026 ◽  
pp. 13-16 ◽  
Author(s):  
Sérgio Augusto Mello da Silva ◽  
Raquel Gonçalves ◽  
André Luis Christoforo ◽  
Francsico Antonio Rocco Lahr
Keyword(s):  
Mechanical Properties ◽  
Castor Oil ◽  
Initial Moisture Content ◽  
Resin Content ◽  
Pressing Pressure ◽  
Medium Density ◽  
Pinus Caribaea ◽  
Polyurethane Resin ◽  
European Code ◽  
New Research

This study aimed to investigate the possibility of using castor-oil based polyurethane resin (PU), formulated with 30 % solids and 70 % solvent, in production of Medium Density Fiberboards (MDF) withPinus caribaeafibers and two percentages of adhesive (5 and 10%). Six panels were fabricated under 4MPa pressing pressure, 190°C temperature. Initial moisture content of fibers was 9%. Properties investigated were: density of the panels; modulus of elasticity (MOE) and modulus or rupture (MOR) in static bending; and internal adhesion. Requirements of European Code EMB/IS-2 were used for comparison of results. Panels made with 10% of resin presented problems due gases expansion, disrupting the plates. For 5% resin content, mechanical properties investigated were above the requirements of the European Coded values. However, an undesirable odor prevented handling of the resin, in conditions here considered, which motivates the suggestion of new research in order to investigate different ratios between of solids and solvent contents, to completely enable the use of castor-oil based polyurethane resin MDF manufacture.

Characterization of Medium Density Particleborads Using Agricultural Residues

2015 ◽  
Vol 1088 ◽  
pp. 656-659
Author(s):  
Ivaldo D. Valarelli ◽  
Rosane A.G. Battistelle ◽  
Barbara Stolte Bezerra ◽  
Luiz A. Melgaço N. Branco ◽  
Eduardo Chahud ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Castor Oil ◽  
Mechanical Characteristics ◽  
Mechanical Characterization ◽  
Raw Materials ◽  
Construction Materials ◽  
Agricultural Residues ◽  
Medium Density ◽  
Polyurethane Resin

In recent years the production of products derived from wood and bamboo are increasing, due to the search for a more rational exploitation of these raw materials. Amongst these products, the particleboards production combine sustainability and rationality in the use of these materials. In this context, this work has the objective to study the application of alternative raw materials in the manufacture of Medium Density Particleboards (MDP), using residues from industrial processimg of coffee and bamboo. MDP had been produced with particles of giganteus bamboo of the Dendrocalamus species and particle of coffee rind in the intermediate layer of the particleboard, bonded with polyurethane resin based on castor oil. The physical and mechanical characterization was carried out accordingly to NBR 14810-3 (2006). The physical properties evaluated were: of water absorption for 2h and 24h; thickness swallowing for 2h and 24h; density, humidity content. The mechanical properties evaluated were: Tensile strength, static bending (MOR and MOE). The results were compared with NBR 14810-2 (2006) and also with the ANSI A208-1 (1993). The physical performance of these particleboards was below the values recommend by the Brazilian norm. Also the mechanical characteristics are not improve, demonstrating that the inclusion of coffee rind did not benefit the physical characteristics and nor the mechanical ones. However it can be used as construction materials for partitions and ceiling panels.

scholarly journals ANÁLISE DO COMPORTAMENTO DE PEÇAS ESTRUTURAIS DE MADEIRA LAMINADA COLADA COM RESINA POLI-URETANA SUBMETIDAS À COMPRESSÃO AXIAL

2018 ◽  
Vol 10 (Especial) ◽  
pp. 65-70
Author(s):  
Adriano Seidi Demarchi Mikami ◽  
Larissa Queiroz Minillo
Keyword(s):  
Mechanical Properties ◽  
Statistical Analysis ◽  
Axial Compression ◽  
Castor Oil ◽  
Physical And Mechanical Properties ◽  
Structural Timber ◽  
Assembly Process ◽  
Fast Growing ◽  
Polyurethane Resin ◽  
Glued Laminated Timber

The interest in replacing native wood with fast growing reforestation wood is recurrent, aiming at larger quantities of material in less time with no losses in its resistive properties. This paper consists in comparing the behavior of in natura structural timber parts with glued laminated timber, made with polyurethane resin based on castor oil, with regard to the resistance to axial compression. The assembly process of these pieces aims to achieve a similar or even superior resistance to the solid ones, considering that the MLC method allows the construction of structural pieces of many sizes and formats using different pieces of wood. Two this end, two species of wood, Pinus and Eucalyptus will be compared. The polyurethane resin, manufactured by the company Imperveg, was used in the process of glueing the stacks together. Evaluations will be performed according to NBR7190 (1997) aiming to characterize the physical and mechanical properties of the pieces and the results obtained will be submitted to statistical analysis by the Anova method.

Multilayer Medium Density Particleboard Using Castor Oil-Based Polyurethane Resin and Hevea Brasiliensis Wood

2014 ◽  
Vol 1025-1026 ◽  
pp. 559-563 ◽  
Author(s):  
Sarah David Muzel ◽  
Larissa Ribas de Lima ◽  
Maristela Gava ◽  
José Nivaldo Garcia ◽  
Juliana Cortez Barbosa ◽  
...  
Keyword(s):  
Hevea Brasiliensis ◽  
Castor Oil ◽  
Mechanical Characteristics ◽  
Mechanical Characterization ◽  
Urea Formaldehyde ◽  
Medium Density ◽  
Technical Standard ◽  
Multilayer Medium ◽  
Polyurethane Resin ◽  
European Standards

This work aimed to study the feasibility of using castor oil-based polyurethane (PU) resin, and rubberwood for the production of particleboards. Multilayer panels were produced using particles taken from RRIM 600 and GT1 clones of Hevea brasiliensis trees. Urea-formaldehyde (UF) and PU were used for bonding the particles. Physico-mechanical characterization was done according to the specifications of the European standards for wood-based panels. The average results were compared to values pre-established by the EN 312/2003 technical standard as well as between the above mentioned treatments. The results indicated that the use of PU and rubberwood has a great potential for particleboards production. The use of PU favors the production of boards with improved physical-mechanical characteristics.

Particleboard with Inclusion Bi-Oriented Polypropylene Applied in Architecture

2016 ◽  
Vol 858 ◽  
pp. 202-207
Author(s):  
Marcus Antonio Pereira Bueno ◽  
Fábio A. Moizés ◽  
Ivaldo D. Valarelli ◽  
Fernanda Christiane Rossetto Dinhane ◽  
Valter Roberto de Brito Celestino ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Castor Oil ◽  
Total Mass ◽  
Physical And Mechanical Properties ◽  
Inverse Relation ◽  
Direct Relation ◽  
Thickness Swelling ◽  
Polyurethane Resin ◽  
Oriented Polypropylene

This paper analyze the potentiality of using the BOPP (bi-oriented polypropylene), a byproduct of automotive battery labeling, in the bamboo particleboard production to be used in architecture projects. On this research, were studied both physical and mechanical properties according to the standards NBR 14810-3/2006 and ANSI A208.1/1999. The particleboards are produced in three traces: 75% bamboo and 25% BOPP, 50% bamboo and 50% BOPP and 100% bamboo. The adhesive used was polyurethane resin with a castor oil base, weighing 12% of the total mass of each panel. The physical properties of water absorption and thickness swelling, in both periods of 2 hours and 24 hours, demonstrated a direct relation with the amount of BOPP and impermeability of particleboards produced. Regarding the mechanical properties of bending and tensile strength, the addition of BOPP had an inverse relation to these properties.

scholarly journals Acoustic absorption and thermal insulation of wood panels: Influence of porosity

BioResources ◽  
2019 ◽  
Vol 14 (2) ◽  
pp. 3746-3757
Author(s):  
Marilia da Silva Bertolini ◽  
César Augusto Galvão de Morais ◽  
André Luis Christoforo ◽  
Stelamaris Rolla Bertoli ◽  
Wilson Nunes dos Santos ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Thermal Conductivity ◽  
Thermal Insulation ◽  
Sound Absorption ◽  
Raw Materials ◽  
Physical And Mechanical Properties ◽  
Pressing Pressure ◽  
Reverberation Chamber ◽  
Polyurethane Resin ◽  
Highly Porous

The development of materials that offer environmental comfort inside buildings, through adequate thermal and acoustic behavior, has been as relevant as the search for raw materials of renewable origin. In this context, this study produced and characterized panels made with Pinus sp. waste materials, which were treated with a copper chrome boric oxide preservative and a castor-oil based polyurethane resin. The physical and mechanical properties of the panels were evaluated according to the ABNT NBR 14810 standard (2013). The panel porosity was investigated by scanning electron microscopy (SEM) and mercury intrusion porosimetry techniques. The sound absorption was analyzed by a reverberation chamber and thermal conductivity by the modified fractionated column method. Samples with a higher pressing pressure (4 MPa) during the manufacturing presented lower thickness swelling and higher mechanical properties in static bending. Panels made with a lower press pressure (2.5 MPa) resulted in a higher porosity volume (55.7%). The more highly porous panels were more acoustically efficient, with a sound absorption coefficient close to 0.8 at 3.2 kHz, and they had a better thermal conductivity performance.The potential of these panels for application where sound absorption and thermal insulation are prioritized is thus observed.

scholarly journals Effect of Alternative Wood Species and First Thinning Wood on Oriented Strand Board Performance

2018 ◽  
Vol 2018 ◽  
pp. 1-7 ◽  
Author(s):  
Fabiane Salles Ferro ◽  
Amós Magalhães Souza ◽  
Isabella Imakawa de Araujo ◽  
Milena Maria Van Der Neut de Almeida ◽  
André Luis Christoforo ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Wood Species ◽  
Castor Oil ◽  
Oriented Strand Board ◽  
Water Immersion ◽  
Physical And Mechanical Properties ◽  
European Code ◽  
Board Performance ◽  
Thinning Operations ◽  
Alternative Species

This study aimed to evaluate the feasibility of using and influence of alternative wood species such as Cambará, Paricá, Pinus, and wood from first thinning operations on oriented strand board (OSB) physical and mechanical properties. Besides that, an alternative resin, castor oil-based polyurethane, was used to bond the particles, due to the better environmental performance when compared to other resins commonly used worldwide in OSB production. Physical properties such as the moisture content, thickness swelling, and water absorption, both after 2 and 24 hours of water immersion, and mechanical properties such as the modulus of elasticity and resistance in static bending, in major and minor axes, and internal bonding were investigated. All tests were performed according to European code EN 300:2006. Results showed the influence of wood species on physical and mechanical properties. Panels made with higher density woods such as Cambará presented better physical performance, while those made with lower density woods such as Pinus presented better mechanical properties. Besides that, strand particle geometry was also influenced on all physical and mechanical properties investigated. Therefore, the feasibility of using alternative species and wood from first thinning and with castor oil-based polyurethane resin in OSB production was verified.

scholarly journals Medium density fiberboard manufactured with castor oil based polyurethane resin

2013 ◽  
Vol 15 (1) ◽  
pp. 7-19 ◽  
Author(s):  
Sérgio Augusto Mello da Silva ◽  
André Luis Christoforo ◽  
Túlio Hallak Panzera ◽  
Francisco Antonio Rocco Lahr
Keyword(s):  
Castor Oil ◽  
Medium Density Fiberboard ◽  
Medium Density ◽  
Polyurethane Resin

scholarly journals Strength Properties of Medium Density Fiberboards (MDF) Manufactured with Pinus Elliottii Wood and Polyurethane Resin Derived from Castor Oil

2013 ◽  
Vol 3 (1) ◽  
pp. 7-14 ◽  
Author(s):  
Silva Sérgio Augusto Mello Da ◽  
Christoforo André Luis ◽  
Gonçalves Raquel ◽  
Lahr Francisco Antonio Rocco
Keyword(s):  
Castor Oil ◽  
Pinus Elliottii ◽  
Strength Properties ◽  
Medium Density ◽  
Polyurethane Resin

scholarly journals COMPRESSÃO AXIAL EM PEÇAS DE MADEIRA: ANÁLISE DO COMPORTAMENTO DE PEÇAS ESTRUTURAIS DE MADEIRA REVESTIDAS COM RESINA POLI-URETANA SUBMETIDAS À COMPRESSÃO AXIAL

2018 ◽  
pp. 103-111
Author(s):  
Adriano Seidi Demarchi Mikami ◽  
Caíque Rafael de Macena Oliveira ◽  
Larissa Queiroz Minillo
Keyword(s):  
Mechanical Properties ◽  
Statistical Analysis ◽  
Linear Regression ◽  
Mechanical Behavior ◽  
Axial Compression ◽  
Castor Oil ◽  
Physical And Mechanical Properties ◽  
Structural Timber ◽  
Regression Methods ◽  
Polyurethane Resin

This study relies on comparing the behavior of structural timber pieces in naturawith pieces treated with castor oil-based polyurethane resin, with regard to the resistance to axial compression. The treatment attempts to improve the mechanical behavior of the wood and, to this end, two species will be compared: Pinus and Eucalyptus. Evaluations will be carried out according to NBR7190(1997)aiming to characterize physical and mechanical properties of the pieces and the results will be submitted to the statistical analysis by the Anova and Linear Regression methods

scholarly journals A Generalized Approach for Evaluating the Mechanical Properties of Polymer Nanocomposites Reinforced with Spherical Fillers

Nanomaterials ◽  
2021 ◽  
Vol 11 (4) ◽  
pp. 830
Author(s):  
Julio Cesar Martinez-Garcia ◽  
Alexandre Serraïma-Ferrer ◽  
Aitor Lopeandía-Fernández ◽  
Marco Lattuada ◽  
Janak Sapkota ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Polymeric Nanocomposites ◽  
Mechanical Reinforcement ◽  
Future Studies ◽  
Three Phase ◽  
Theoretical Predictions ◽  
Filler Network ◽  
New Research ◽  
Good Agreement ◽  
Research Avenue

In this work, the effective mechanical reinforcement of polymeric nanocomposites containing spherical particle fillers is predicted based on a generalized analytical three-phase-series-parallel model, considering the concepts of percolation and the interfacial glassy region. While the concept of percolation is solely taken as a contribution of the filler-network, we herein show that the glassy interphase between filler and matrix, which is often in the nanometers range, is also to be considered while interpreting enhanced mechanical properties of particulate filled polymeric nanocomposites. To demonstrate the relevance of the proposed generalized equation, we have fitted several experimental results which show a good agreement with theoretical predictions. Thus, the approach presented here can be valuable to elucidate new possible conceptual routes for the creation of new materials with fundamental technological applications and can open a new research avenue for future studies.

Sign in / Sign up

Export Citation Format

Share Document