Abstract：The pyrolysis properties of Urea Formaldehyde (UF) were studied by synchronization thermal analyzer. The paper deinking sludge was used as the main raw materials for paper sludge fiberboard. The influence of density, resin content, temperature, time on mechanical properties of paper deinking sludge fiberboard was investigated. The results show that the suitable hot press temperature is 110～200℃. The suitable content of NH4Cl is 0.5%. The modulus of rupture of paper sludge fiberboard is 1.99～18.33 MPa, with an average value of 8.21 MPa. The modulus of elasticity of paper sludge fiberboard is 0.46～3.22 GPa, with an average value of 1.57 GPa. The internal bonding strength of paper sludge fiberboard is 1.58～3.15 MPa, with an average value of 2.25 MPa. The internal bonding strength after boiling and drying experiments of paper sludge fiberboard is 0.66～1.71 MPa, with an average value of 1.14 MPa. The thickness swelling rate of water absorption of paper sludge fiberboard is 4.36%～7.69%, with an average value of 5.54%. The density, resin content, temperature, time show different influences on mechanical properties of paper sludge fiberboard. The density has the maximum influence by range analysis. The influence of density, resin content and temperature on mechanical properties of paper sludge fiberboard is significant by SAS analysis.
2009, Vol. 27 
