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.

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.

MDP Panels Manufactured with Hevea Brasiliensis Overlaid with Bamboo Foil of Phyllostachys Edulis

2015 ◽  
Vol 1088 ◽  
pp. 686-689
Author(s):  
Sarah David Muzel ◽  
Maristela Gava ◽  
Juliana Cortez-Barbosa ◽  
Karina Aparecida de Oliveira ◽  
Elen Aparecida Martines Morales ◽  
...  
Keyword(s):  
Hevea Brasiliensis ◽  
Mechanical Characteristics ◽  
Mechanical Characterization ◽  
Urea Formaldehyde ◽  
Rubber Tree ◽  
Homogeneous Layer ◽  
Formaldehyde Resin ◽  
Phyllostachys Edulis ◽  
Structural Reinforcement ◽  
European Standards

The objective of the present work was to study the use of bamboo foils as structural reinforcement for MDP wooden panels. Four wooden panels of homogeneous layer were produced using particles of GT1 and RRIM 600 clones ofHevea brasiliensis(rubber tree), and glued with urea-formaldehyde resin (UF). These panels were also overlaid with foils ofPhyllostachys edulis(mossô bamboo). The tests were realized to evaluate the physical-mechanical characterization according to European standards (EN). The production of the particleboards with reinforcement of bamboo improves the physical-mechanical characteristics of these commercial wooden panels.

scholarly journals Properties of Particleboard from Sawmill Wastes and Rubberwood (Hevea brasiliensis) with Different Board Thickness and Resin Content

2019 ◽  
Vol 8 (4) ◽  
pp. 6808-6812
Keyword(s):  
Mechanical Properties ◽  
Modulus Of Elasticity ◽  
Hevea Brasiliensis ◽  
Urea Formaldehyde ◽  
Resin Content ◽  
Modulus Of Rupture ◽  
Internal Bonding ◽  
Thickness Swelling ◽  
Board Thickness ◽  
European Standards

This study investigate the effect of the board thickness and resin content on the properties of particleboard. Single-layered sawmill wastes and rubberwood particleboards bonded with urea formaldehyde (UF) resins were manufactured. The boards were fabricated with three different board thicknesses (15, 18 and 25mm) at three different resin contents (7, 8 and 9%). The boards produced were evaluated for their modulus of elasticity (MOE), modulus of rupture (MOR), internal bonding (IB) and thickness swelling (TS) in accordance with the European Standards. Board thickness does affect the mechanical properties of particleboard. The study revealed that thinner boards gave higher MOE, MOR, IB and TS. No significant effects were found among three resin contents for MOE, MOR, IB and TS. It can be concluded that the particleboard made from mix tropical wood from sawmill waste and with rubberwood were suitable for particleboard manufacturing.

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.

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

BioResources ◽  
2015 ◽  
Vol 10 (4) ◽  
Author(s):  
Maristela Gava ◽  
Sarah David Müzel ◽  
Larissa Ribas De Lima ◽  
Juliana Cortez Barbosa ◽  
José Nivaldo Garcia ◽  
...  
Keyword(s):  
Hevea Brasiliensis ◽  
Castor Oil ◽  
Polyurethane Resin

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

Particleboard Produced with Sawmill Waste of Different Wood Species

2014 ◽  
Vol 884-885 ◽  
pp. 689-693 ◽  
Author(s):  
Luciane Simal Alves ◽  
Sérgio Augusto Mello da Silva ◽  
Maximiliano dos Anjos Azambuja ◽  
Luciano Donizeti Varanda ◽  
Andre Luis Christofóro ◽  
...  
Keyword(s):  
Moisture Content ◽  
Wood Species ◽  
Castor Oil ◽  
Urea Formaldehyde ◽  
Specific Pressure ◽  
Thickness Swelling ◽  
Pressing Temperature ◽  
Pressing Time ◽  
Polyurethane Resin ◽  
Nominal Density

This study aimed to investigate physical performance of particleboards produced with waste from sawmills, containing different wood species, and two adhesives: urea-formaldehyde (UF) based resin and castor-oil (PU) based bi-component polyurethane resin. Panels were produced with nominal density 0.8gcm-3; pressing temperature 110°C; pressing time 10 min; specific pressure 5 MPa. Water absorption (2 and 24h); thickness swelling (2 and 24h); density; and moisture content were investigated. Results confirmed that the produced panels presented compatible physical properties in comparison with other researches referred in literature, proving the feasibility of inputs employed. Panels produced PU showed better performance than those produced with UF.

scholarly journals Calcium carbonate modified urea–formaldehyde resin adhesive for strength enhanced medium density fiberboard production

RSC Advances ◽  
2021 ◽  
Vol 11 (40) ◽  
pp. 25010-25017
Author(s):  
Li Lu ◽  
Yan Wang ◽  
Tianhua Li ◽  
Supeng Wang ◽  
Shoulu Yang ◽  
...  
Keyword(s):  
Calcium Carbonate ◽  
Urea Formaldehyde ◽  
Medium Density Fiberboard ◽  
Urea Formaldehyde Resin ◽  
Formaldehyde Resin ◽  
Medium Density ◽  
Ionic Bond ◽  
Resin Adhesive ◽  
Uf Resin ◽  
Modified Urea

Reactions between CaCO3 and CH2O2 during polycondensation of UF resin produce Ca2+. Ionic bond complexation binds Ca2+ with UF resin. The UF resin crystalline percentage decreases from 26.86% to 22.71%. IB strength of resin bonded fiberboard increases from 0.75 to 0.94 MPa.

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