Properties of Medium-density Particleboard from Saline Athel Wood
2005
Zheng, Y. | Pan, Z. | Zhang, R. | Jenkins, B.M. | Blunk, S.
Athel tree, Tamarix aphylla (L), can potentially be used as a biomass crop to help with managing saline subsurface drainage water in arid land irrigated agriculture. In this study, Athel wood was used to manufacture medium-density particleboard with an aim of developing new applications for the saline wood. The research investigated the effects of different types of adhesives, particle sizes, bark content (BC), resin content (RC), and hot water pretreatment on the mechanical properties and water resistance of the Athel-derived medium-density articleboards. The measured mechanical properties include tensile strength (TS), modulus of rupture (MOR), modulus of elasticity (MOE) and internal bond strength (IB) of the finished particleboards. Water absorption and thickness swell were used to evaluate the water resistance. Compared with urea formaldehyde (UF), polymeric methane diphenyl diisocyanate (PMDI) resulted in a particleboard of better mechanical properties and water resistance. The medium size (20-40 mesh) particles gave the best mechanical properties and water resistance of the particleboard when they were evaluated against small size (40-60 mesh) and large size (10-20 mesh) particles. The mechanical properties of particleboard were improved as RC of UF increased from 7% to 16%, but deteriorated as BC increased from 0% to 16.2%. The particleboard made from the wood particles that had undergone hot water pretreatment had poor mechanical properties and water resistance compared with the particleboard made from untreated particles. Saline Athel wood is an appropriate material for manufacturing particleboards.
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