Addition of urea as formaldehyde scavenger for low molecular weight phenol formaldehyde-treated compreg wood.

摘要: Addition of urea as formaldehyde scavenger for low molecular weight phenol formaldehyde- treated compreg wood. Phenol (PF) resin impregnation followed by compression at considerable high hot pressing pressure can improve strength properties, dimensional stability and durability wood against decay. Formaldehyde emission from materials is, however, very especially when is used. Reduction in was attempted introducing the treating solution. The experiment included jelutong (Dyera costulata) sesenduk (Endospermum diadenum) strips with 20, 30 40% (LMwPF) mixed separately (30% based on solid PF), pre-cured 65 °C 7, 8 9 hours subsequently compressed to ratio 80% 150 20 min. properties were analysed. optimum treatment combination then applied produce laminated Three-layered fabricated assembling impregnated either perpendicular (cross) or parallel each other, compressing under press. presence LMwPF solution able reduce besides generating higher modulus rupture, elasticity stability. 30% PF concentration (based pre-curing Compared untreated same size, both cross-laminated had superior properties. Shear bonding line than shear comparable that also rendered resistance white rot fungus.