Study on Salix discolor Properties and Its Particleboard Manufacturing Technology

The physical properties and chemical constituents of 3year old Salix discolor wood were tested and analyzed, and the feasibility of making particleboard from Salix discolor with ureaformaldehyde resin as adhesive was studied. The effects of board density and resin content on Salix discolor particleboard bonded with ureaformaldehyde resin were evaluated. The experiment results showed that along with the increment of the particleboard thickness together with adhesive loading dosage, the mechanical properties of particleboard were improved, whereas the thickness swelling rate after 2 h water soaking was reduced. The thickness swelling rate after 2 h water soaking was significantly decreased by adding waterproof wax emulsion. Both of the mechanical properties and the thickness swelling rate after 2h water soaking could meet the requirements specified in the national standard GB/T 48973—2003 when the particleboard density was 065g/cm3 with 10% of resin content and 1% of waterproof wax emulsion. The modulus of elasticity of the Salix discolor particleboard manufactured with the above technology was 2 260 MPa, the modulus of static bending strength value was 187 MPa, the internal bonding value was 1.06 Mpa and the thickness swelling rate after 2h water soaking was 77%.