Effect of the PVA gluing on bending strength properties of finger jointed turkey oakwood (Quercus cerris L.)

Karastergiou, Sotirios; Barboutis, J.; Vassiliou, V.

doi:10.1007/s00107-005-0075-7

Cited by 9 publications

(5 citation statements)

References 2 publications

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“…Class D1 and D2 adhesives showed lower modulus of rupture, while for the class C adhesive the modulus of rupture value was higher than that of adhesive D4 analyzed in this study. The bending strength shown by PVAc adhesive was similar to that found by Karastergiou et al (2006), when evaluating the flexural strength of specimens with equal length fingers. The bonding performance reported by Vrazel and Sellers Jr (2004) in bending tests using PUR adhesive was far higher than that found in this study.…”

Section: Resultssupporting

confidence: 63%

“…The modulus of elasticity values are higher than the vast majority of the values found by other researchers (Özçifçi and Yapici 2008b, Karastergiou et al 2006, Vassiliou et al 2007, Vrazel and Sellers Jr 2004. It was also observed that PVAc adhesive system showed a plastic regime, resulting in a higher modulus of rupture when compared with PUR adhesive, while PUR adhesive presented brittle rupture, where the load in the proportional limit was very close to the rupture load.…”

Section: Resultscontrasting

confidence: 43%

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BONDING BEHAVIOR OF Eucalyptus benthamii WOOD TO MANUFACTURE EDGE GLUED PANELS

Martins

Menezzi

Ferraz

et al. 2013

Maderas, Cienc. tecnol.

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The main objective of this study was to evaluate the performance of Eucalyptus benthamii Maiden et Cambage wood for the production of edge glued panels. Wood pieces with planed and sanded surfaces were bonded using cross-linking polyvinyl acetate (PVAc) and polyurethane (PUR) based adhesives, at pressures of 0.7 MPa and 1.0 MPa. The same adhesives were used for finger jointing at a pressure of 1.5 MPa. The bonding strength was determined through glue-line shear strength and bending test for finger jointing. According to the results, the pressure and surface preparation variables did not influence the glue-line shear strength of the adhesive PVAc, whereas for the PUR adhesive strength was influenced by the pressures and machining used. All treatments met the minimum values required by the standard; however, the highest bonding strength was found in the sample glued with PUR adhesive at a pressure of 1.0 MPa and sanded surface. The highest modulus of rupture was obtained in the samples glued using PVAc, while the modulus of elasticity was not affected by the type of adhesive used. These results enabled concluding that with regard to its technological properties assessed in the present study, E. benthamii wood is suitable for the production of edge glued panel.

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Section: Resultssupporting

confidence: 63%

Section: Resultscontrasting

confidence: 43%

BONDING BEHAVIOR OF Eucalyptus benthamii WOOD TO MANUFACTURE EDGE GLUED PANELS

Martins

Menezzi

Ferraz

et al. 2013

Maderas, Cienc. tecnol.

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“…Other wood properties were also investigated e.g. density and moisture (Monaco et al 2011), and bending strength (Karastergiou et al 2005). However, there is still limited information on Quercus cerris wood characteristics and performance, mainly regarding chemical composition and durability.…”

Section: Introductionmentioning

confidence: 99%

Chemical characterization, hardness and termite resistance of Quercus cerris heartwood from Kosovo

Bajraktari

Nunes

Knapic

et al. 2018

Maderas, Cienc. tecnol.

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Quercus cerris, the Turkey oak, is an oak species native to southern central and southeastern Europe, extending into southwestern Asia. It is present in a large extent in the forests of the Republic of Kosovo, and at present used mainly for bio-energy. The potential use of Quercus cerris wood for construction and higher value wood products has been investigated in the last years. However limited information is available on wood characteristics and performance, mainly regarding chemical composition and durability. The heartwood of Quercus cerris taken from 70-90 year-old trees grown in two sites in Kosovo was studied regarding resistance to termite attack, chemical composition and hardness. The heartwood contained only 6,7% extractives, with a small content of tannins. The wood density was on average 0,81 at 12% moisture content and Brinell hardness 36,2 MPa. It was classified as not durable against subterranean termites and therefore not suitable for external use in ground contact in termite areas unless adequately protected. Nevertheless, Quercus cerris wood showed adequate hardness and density for interior uses like flooring for domestic and commercial applications with moderate use.

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“…The effects of adhesive type, wood species and finger joint configurations on the structural performance of finger joint (FJ) was evaluated [7] and advised that the serviceability of finger joint production depends on firstly the kind of wood followed by the type of adhesive and then by the type of joint. The effect of polyvinyl acetate (PVAc) based glues (D1 and D2 type) on the bending strength properties of finger jointed turkey Oakwood were studied [8]. They found PVAc D2 glue yielding a better performance over PVAc D1 type.…”

Section: Introductionmentioning

confidence: 99%

Experimental Investigation of the Mechanical Properties of Jointed Rubber Wood Using Two Types of Adhesives

Nadir¹,

Nagarajan²

2013

AMM

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Wood, a potentially good construction material in terms of sustainability, has less structural use now in India. Due to easy availability, low cost and good working quality there is a scope for the value addition of rubber wood in the Country. Finger jointing technology benefits high economic advantage by upgrading rubber wood. There is a dearth of information for the influence of adhesive on the mechanical properties of jointed rubber wood in India. This study was conducted to evaluate the effects of adhesive type on the end jointing and face gluing of rubber wood. The end jointing adopted for the study was the most common finger joint configuration of the wood industry in Kerala, the largest producer of rubber wood in the Country. The adhesives were polyvinyl acetate (PVAc) and phenol resorcinol formaldehyde (PRF). The face gluing evaluation was done based on the adhesive bond strength and percentage wood failure. The integrity of glue types to delamination was also tested .The results of the study have indicated glue type has no statistically significant effect on modulus of rupture, modulus of elasticity of finger joints and the shear strength of adhesive bond in the dry stage with the same wood failure percentage. The joint efficiency of PRF adhesive was superior to PVAc in tension and compression of finger joints. The PRF adhesive exhibited excellent performance in the exterior exposure condition durability test.

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Effect of the PVA gluing on bending strength properties of finger jointed turkey oakwood (Quercus cerris L.)

Cited by 9 publications

References 2 publications

BONDING BEHAVIOR OF Eucalyptus benthamii WOOD TO MANUFACTURE EDGE GLUED PANELS

BONDING BEHAVIOR OF Eucalyptus benthamii WOOD TO MANUFACTURE EDGE GLUED PANELS

Chemical characterization, hardness and termite resistance of Quercus cerris heartwood from Kosovo

Experimental Investigation of the Mechanical Properties of Jointed Rubber Wood Using Two Types of Adhesives

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