Medium density fiberboard manufactured with castor oil based 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.

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

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.1025-1026.559 ◽

2014 ◽

Vol 1025-1026 ◽

pp. 559-563 ◽

Cited By ~ 2

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.

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

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.1025-1026.13 ◽

2014 ◽

Vol 1025-1026 ◽

pp. 13-16 ◽

Cited By ~ 2

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.

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

International Journal of Composite Materials ◽

10.5923/j.cmaterials.20130301.02 ◽

2013 ◽

Vol 3 (1) ◽

pp. 7-14 ◽

Cited By ~ 2

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

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

RSC Advances ◽

10.1039/d1ra04316a ◽

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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