Bonding behavior of Eucalyptus benthamii wood to manufacture edge glued panels

Authors

  • Sabrina A. Martins University of Brasilia
  • Cláudio H. S. Del Menezzi University of Brasilia
  • Joana M. Ferraz University of Brasilia
  • Mário R. de Souza

Keywords:

surface preparation, adhesive, pressure, finger joint

Abstract

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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Author Biographies

Sabrina A. Martins, University of Brasilia

PhD Candidate in Forest Science, Department of Forest Engineering, Faculty of Technology, University of Brasilia, Brasília, DF, BRAZIL.

Cláudio H. S. Del Menezzi, University of Brasilia

Adjunct Professor, Dr., Department of Forest Engineering, Faculty of Technology, University of Brasilia, Brasília, DF, BRAZIL.

Joana M. Ferraz, University of Brasilia

Forest Engineer, MSc, Department of Forest Engineering, Faculty of Technology, University of Brasilia, Brasília, DF, BRAZIL.

Mário R. de Souza

Wood Scientist, PhD, Forest Products Laboratory, Brazilian Forest Service, Ministry of Environment, 70818-900, Brasília, DF, BRAZIL.

How to Cite

Martins, S. A., Del Menezzi, C. H. S., Ferraz, J. M., & de Souza, M. R. (2014). Bonding behavior of Eucalyptus benthamii wood to manufacture edge glued panels. Maderas. Ciencia Y Tecnología, 15(1), 79–92. Retrieved from https://revistas.ubiobio.cl/index.php/MCT/article/view/1279

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