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

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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Medium density fiberboard manufactured with castor oil based polyurethane resin

Revista Vértices ◽

10.5935/1809-2667.20130002 ◽

2013 ◽

Vol 15 (1) ◽

pp. 7-19 ◽

Cited By ~ 2

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

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Basic and Grade Stress for Some Timber in Sarawak

Journal of Civil Engineering Science and Technology ◽

10.33736/jcest.92.2011 ◽

2011 ◽

Vol 2 (2) ◽

pp. 35-38

Author(s):

Gaddafi Ismaili ◽

Badorul Hisham Abu Bakar ◽

Khairul Khuzaimah Abdul Rahim

Keyword(s):

Exotic Species ◽

Modulus Of Elasticity ◽

Acacia Mangium ◽

Wood Properties ◽

Strength Properties ◽

Indigenous Species ◽

Medium Density ◽

Compression Stress ◽

Strength Group ◽

Fast Growing Species

Strength properties’ tests are conducted in the small clear sample. This paper aim to acquire the basic and grade stresses of some fast growing species thus identifies its strength group. Thus, the information of wood properties from different species and condition are acquired from strength property's test. The required information namely, bending parallel to the grain, compression stress parallel to grain, shear parallel to grain and modulus of elasticity. The condition of the trees which is referred to green and air-dry condition. Three different species which are referred to exotic species of Acacia mangium and indigenous species of Aras. The results from the study indicated that, Acacia mangium classified under the strength group SG5, whilst Aras was classified under the strength group SG7. The timber is of medium density Light Hardwood ranging from 0.37-0.52g/cm3 air-dry condition.

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Comparative Study of Physico-Chemical Properties of Pure Polyurethane and Polyurethane Based on Castor Oil

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.983.39 ◽

2014 ◽

Vol 983 ◽

pp. 39-43

Author(s):

M. A. Alaa ◽

Kamal Yusoh ◽

S.F. Hasany

Keyword(s):

Castor Oil ◽

High Performance ◽

In Situ Polymerization ◽

Chemical Properties ◽

Strength Properties ◽

Hydroxyl Group ◽

Physico Chemical ◽

Analysis Technique ◽

Hydrophobic Nature ◽

Poly Propylene

Petroleum based polyurethanes are contributing major portions in the world requirement. To overcome the environmental issues and price adaptability, there is always a massive demand of utilization of renewable resources for polyurethane synthesis with comparable physico-chemical properties. Castor oil is the only major natural vegetable oil that contains a hydroxyl group (-OH) and unsaturated double bonds (C=C) in its organic chain and therefore can be employed with or without modification due to the excellent properties derived from the hydrophobic nature of triglycerides. In this study, physico-chemical properties of high performance polyurethane synthesized from Poly propylene glycol (PPG) in comparison with a combination of PPG and Castor oil (a renewable source), by in situ polymerization technique has been studied. The variations in properties of both types of polyurethanes are evaluated by Fourier Transform Infrared Spectroscopy (FTIR), Scanning Electron Microscopy (SEM) and Thermogravimetric analysis technique (TGA). Tensile strength properties were investigated by Film Tensile testing equipment. Results indicated the presence of large-CH stretching in castor oil mixed polyurethane with a larger oxidative thermal stability, over a pure PPG polyurethanes. Tensile properties were found almost comparable in pure and mixed polymers, which signify the usage of mixed polymer in coming future, to overcome the environmental and economical crisis in polyurethanes synthesis.

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OSB Panels with Balsa Wood Waste and Castor Oil Polyurethane Resin

Waste and Biomass Valorization ◽

10.1007/s12649-018-0474-8 ◽

2018 ◽

Vol 11 (2) ◽

pp. 743-751 ◽

Cited By ~ 1

Author(s):

Guilherme Henrique Ament Barbirato ◽

Wanley Eduardo Lopes Junior ◽

Victor Hellmeister ◽

Mariana Pavesi ◽

Juliano Fiorelli

Keyword(s):

Castor Oil ◽

Wood Waste ◽

Balsa Wood ◽

Polyurethane Resin

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Production and characterization of MDF using eucalyptus fibers and castor oil-based polyurethane resin

Materials Research ◽

10.1590/s1516-14392004000300008 ◽

2004 ◽

Vol 7 (3) ◽

pp. 421-425 ◽

Cited By ~ 6

Author(s):

Cristiane Inácio de Campos ◽

Francisco Antonio Rocco Lahr

Keyword(s):

Castor Oil ◽

Polyurethane Resin

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Effect of juvenile wood on strength properties and dimensional stability of black spruce medium-density fiberboard panels

Holzforschung ◽

10.1515/hf.2005.001 ◽

2005 ◽

Vol 59 (1) ◽

pp. 1-9 ◽

Cited By ~ 9

Author(s):

Jun Li Shi ◽

Shu Yin Zhang ◽

Bernard Riedl

Keyword(s):

Water Absorption ◽

Dimensional Stability ◽

Juvenile Wood ◽

Black Spruce ◽

Medium Density Fiberboard ◽

Strength Properties ◽

Analysis Of Covariance ◽

Modulus Of Rupture ◽

Medium Density ◽

Mean Values

Abstract Strength properties and dimensional stability of medium-density fiberboard (MDF) panels made from black spruce (Picea mariana [Mill.] BSP.) 0–20, 21–40, and over 40 year old fiber were studied. An analysis of covariance (ANCOVA) was performed to examine the differences in modulus of rupture (MOR), modulus of elasticity (MOE), and thickness swell (TS) of the three types of panels, while panel density was treated as a covariate in order to adjust the mean values that were partly attributed to panel density. The results indicate that MOR, internal bond (IB), and water absorption of MDF panels made from 0–20 year old fiber, which contained 100% juvenile wood, were significantly superior to those of panels made from 21–40 and over 40 year old fiber; but linear expansion (LE) of MDF panels made from 0–20 year old fiber was significantly larger than that of panels from the other two age classes. The differences in MOR, IB, water absorption, and LE between panels made from 21–40 and over 40 year old fiber were not significant. The comparisons of panel MOE and TS were relatively dependent on panel density due to existence of interactions among the three age groups.

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SHORT NOTES: APPLICATION OF MINERAL FILLER IN MEDIUM DENSITY FIBERBOARD (MDF) AND ITS EFFECT ON MATERIAL PROPERTIES AS A FUNCTION OF PARTICLE SIZE

Wood Research ◽

10.37763/wr.1336-4561/66.5.891899 ◽

2021 ◽

Vol 66 (5) ◽

pp. 891-899

Author(s):

TOMASZ OZYHAR

Keyword(s):

Particle Size ◽

Material Properties ◽

Filler Content ◽

Urea Formaldehyde ◽

Medium Density Fiberboard ◽

Strength Properties ◽

Inorganic Filler ◽

Formaldehyde Resin ◽

Medium Density ◽

Wood Fibers

The addition of inorganic filler material in medium density fiberboard (MDF) and the effect on material properties as a function of particle size was examined. Medium density fiberboard was manufactured in a laboratory scale environment to a target raw densityof 750 kgm-3. Wood fibers were replaced by using calcium carbonate at 3 and 10 wt.% using fillers with weighted median particle sizes of d50= 2.0 μm and d50= 30 μm, respectively. Urea formaldehyde resin was used as binder in all MDF. The influence of filler addition on the modulus of elasticity, bending and tensile strength, dimensional stability and liquid permeability was investigated. The results demonstrate the effect of filler content and its dependence on particle size. The addition of filler with d50= 30 μm does not have any influence on material properties up to a filler content of 10 wt.%. Using the finer filler with d50= 2.0 μm at 10 wt.% filler, the quantity significantly increases the water adsorption and swelling behavior and reduces the strength properties of the MDF.

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