A New Interior Plywood Adhesive Based on Oil -Tea Cake
The oil-tea cake, as the major byproduct of tea oil production, was used with phenol-formaldehyde (PF) resin to prepare a mixed interior plywood panel adhesive (TC-PF adhesive). The optimum formulation of this adhesive and the optimum hot-press conditions for making plywood panels were investigated in this work. The results showed that wet shear strength value of TC-PF adhesives increased when the addition level of PF resin increased. TC-PF adhesive with 50% PF resin addition had a relatively low cost, and moreover pass the bonding strength requirement of China Industry Standard for interior plywood panels. Hot-press temperature and hot-press time had obvious influence on bonding performances of plywood panels. When the hot-press temperature was in the range of 140°C-160°C, the wet shear strength value of panels bonded with the adhesives passed the China Industry Standard requirement. At 3-5min of hot-press time, the plywood panels had satisfactory wet shear strength.
Jianmin Zeng, Taosen Li, Shaojian Ma, Zhengyi Jiang and Daoguo Yang
D. B. Fan et al., "A New Interior Plywood Adhesive Based on Oil -Tea Cake", Advanced Materials Research, Vols. 194-196, pp. 2183-2186, 2011