Document Type : Research Paper
Authors
1 Dept. of Wood and Paper Sciences, Gorgan University of Agricultural Sciences and Natural Resources, Gorgan, Iran,
2 Faculty of Forestry & Wood Technology of Gorgan University of Agricultural Sciences and Natural Resources, Gorgan, Iran.
3 Wood and Forest Products Science Research Division, Research Institute of Forests and Rangelands, Tehran, Iran
4 Faculty of Forestry & Wood Technology of Gorgan University of Agricultural Sciences and Natural Resources, Gorgan,Iran
Abstract
The objective of this study was to manufacture water resistant kenaf stalk particleboard.
Twenty seven boards were produced using 170 °C steam treated kenaf particles, 30 and 60
minute treatment time and three resin types include urea-formaldehyde, melamineformaldehyde
and a mixture of fifty percent each. Physical and mechanical properties were
measured and the results analyzed in a complete random design plan and by the factorial
analysis. The results showed that boards made from treated particles with 60 minute treatment
time and Urea Formaldehyde resin had the highest bending strength. Modulus of elasticity
(MOE) improved with an increase in treatment time. The greatest MOE was achieved with the
boards produced using urea-formaldehyde and the greatest MOE was achieved with the boards
bonded with urea-melamine-formaldehyde resin. Moreover, with increasing treatment time from
30 to 60 minutes internal bond strength (IB) reduced. Thickness swelling and water absorption
of the boards was significantly improved with increasing treatment time.
Keywords
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