Abstract
It is well known that wood species and particle size used influence the bending strength of three-layer particleboard. The objective of this study was to investigate the influence of using bagasse particles in surface layer on bending strength of three-layer particleboard panels. The ratio of the mixture of bagasse and wood particles was 3:7 and 4:6 in the surface and middle layers, respectively. Press temperatures were chosen at two levels of 165 and 180 °C. Three levels of urea formaldehyde resin were selected for the surface layers, namely: 8, 10, and 12 percent. Bending strength of the panels was determined according to the procedure of European Union (EN) Standard. The results show that bagasse has a positive effect on the bending strength of boards. In this research, the treatment with 40% bagasse and 12% resin in the surface layers and a 180 °C press temperature has resulted in an optimum bagasse board product.
Zusammenfassung
Es ist allgemein bekannt, dass die verwendete Holzart und die Spangröße einen Einfluss auf die Biegefestigkeit von dreischichtigen Spanplatten haben. In dieser Studie wurde der Einfluss von Bagassespänen für die Deckschicht auf die Biegefestigkeit von dreischichtigen Spanplatten untersucht. Das Verhältnis von Bagasse in den Deckschichten und Holzspänen in der Mittelschicht betrug 3:7 bzw. 4:6. Als Presstemperaturen wurden 165 und 180 °C und als Harnstoffformaldehydharzgehalte in den Deckschichten wurden 8, 10 und 12 Prozent gewählt. Die Biegefestigkeit der Platten wurde gemäß EN-Norm bestimmt. Die Ergebnisse zeigen, dass Bagasse einen positiven Einfluss auf die Biegefestigkeit der Platten hat. Im Rahmen dieser Untersuchung ergaben sich mit einem Bagasseanteil von 40 % und einem Harzanteil von 12 % in den Deckschichten und einer Presstemperatur von 180 °C optimale Ergebnisse
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Dahmardeh Ghalehno, M., Nazerian, M. & Bayatkashkooli, A. Influence of utilization of bagasse in surface layer on bending strength of three-layer particleboard. Eur. J. Wood Prod. 69, 533–535 (2011). https://doi.org/10.1007/s00107-010-0441-y
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DOI: https://doi.org/10.1007/s00107-010-0441-y