Abstract
The current research focuses on the utilization of branches and twigs of surian as raw material for making composite boards in an effort to utilize the waste part of surian stem wood waste. The types of particle board and oriented strand board were bonded with phenol formaldehyde (PF) of 10% resin content. Variations of board density and board types were focused in this research. The boards were evaluated based on Japanese Industrial Standard (JIS). The results showed that the density of the board affected the physical and mechanical properties of the composite board. Strand boards were better than particle boards with regard to mechanical properties. Physical properties that met the testing standards were moisture content, density, water absorption and thickness swell for both after soaking 2 h in water, while for the mechanical properties test, only modulus of elasticity (MOE) met the standards. However, for further study, it seemed that generally this initial study informed that it was possible to make composite boards from the raw materials, both branches and twigs, with the additional treatment such as changing the size of particles and strands that could improve the properties of the board.
Highlights
Utilization of fast growing wood from the plantation forest, leaving various problems in the efficiency of raw materials, especially branches and twigs
Experimental Particles preparation Wood particles are made from parts of surian wood branches and twigs with the help of a particle making machine; whereas for making flake is done by cutting branches and twigs, flake is made by cutting it with a target size of 50 mm in length with variations in thickness from 0.3 to 1.5 mm and widths of 10–20 mm
Physical properties Moisture content and density Target density of composite board is in the range of 0.5–0.9 g/cm3, the distribution of values that occur at the target density was ± 0.73 g/cm3
Summary
Utilization of fast growing wood from the plantation forest, leaving various problems in the efficiency of raw materials, especially branches and twigs. Waste of harvesting is a part of the stem such as branches and twigs that comes from harvesting activities that are not utilized and left in the forest [1]. This happens due to skidding and logging activities. Besides using UF resin, a mixture of UF and isocyanate is used This is intended to increase strength [5] and reduce thickness swelling [6] because thickness swelling is still a problem on particle boards [7]. Much additional substrate used such as porcelain stone which was used to reduce the value of thickness swelling of composite board
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