Abstract:

This paper analyzed in theory some common rules about the stress releasing in wood composite based on chemical thermodynamics. It primary proved the creep and relaxation would concur during the stain recovery of wood composites after thermos pressing. It told that the release of internal stress in boards is by mains of discharging Non-expansion-work energy and expansion-work energy. Only if the energy in boards system discharged by the way of Non-expansion-work, it would benefit the stability of boards system. And the study found the theoretical basis in chemical thermodynamics for the fact that hot-stacking operation will improve the dimension's stability of wood composites.

Key words: Wood composite, Dimension stabilizing, Stress releasing, Chemical thermodynamics