Investigation on the influence of pressing conditions on the properties of particleboard made from natural mimosa condensed tannins adhesive

In this research the effect of pressing conditions were studied on the green and environmentally friendly, particleboard made of natural mimosa condensed tannins adhesive. Pressing temperature at 200 ° C was fixed. The press time in four levels 3, 4, 5, and 7 minutes and press pressure at three levels of 15, 18 and 22 kg/ cm-2 were considered as variable factors. The results showed that the best treatment from internal bond strength and thickness swelling viewpoints is where pressing conditions include a pressure of 18 kg cm and 5 minutes. In this status, the internal bond 0.59 MPa was obtained and thickness swelling was the lowest compared to the other treatments. It was found that the water absorption decreased with increase in pressing pressure untill 22 kg/cm2.