بررسي امكان جايگزين رزين فنول - فرم آلدهيد با مواد استخراجي پوست بلوط در ساخت تخته خرده چوب

An Investigation of the Possibility of PF Resin Replacement with Oak (Quercus castanifolia) Barkʹs Extractives in Particleboard Manufacture

In this study, the possibility of using oak barkʹs extractives as phenol-formaldehyde resin replacement was paid attention to in particleboard manufacture.The variables were percent replacement, press temprature as well as press time. For quality characteristics determination,water absorption & thickness swelling of samples(after 2 and 24 hours) along with bending strength (modulus of rupture) and internal bond properties of boards were evaluated according to DIN 68763. Results indicated that the best conditions for obtaining the most desirable physical and mechanical properties in PF resin replacement with oak phenolic compounds were obtaind in treatments of 30% replacement, 180 °C press temperature, 7 min press time along with 2% zinc-acetate as catalyst.