Is Wooden Cabinet Stand Susceptible to Moisture and Deformation?

The moisture resistance of wooden cabinet stand depends on the balance between the stress field in the material and the hygroscopic expansion coefficient. Its structural stability is essentially a comprehensive reflection of the creep behavior of cellulose molecular chains under water penetration and the hydrolysis resistance of the bonding interface. When the ambient humidity exceeds the equilibrium moisture content of the wood, the hydrogen bond reorganization of the hydroxyl group triggers interlayer slippage of the cell wall, which is manifested as torsional deformation of the cabinet diagonal line.

When making wooden cabinet stand, the hysteresis effect of wood can be changed by pre-drying treatment, and the fiber saturation point can be controlled within the safety threshold. The surface coating is not a simple physical isolation, but a dynamic osmotic pressure gradient is formed, and the capillary retardation effect of the silane coupling agent is used to slow down the migration rate of water molecules. At the mortise and tenon joints, the cross-linked network of the waterborne polyurethane adhesive can compensate for the shear stress caused by the anisotropic expansion of the wood.

The key to preventing wooden cabinet stand from deformation in a hot and humid environment is the optimization of the material constitutive model. During the modification process, the acetylation reaction replaces part of the hydroxyl groups, which reduces the slope of the moisture absorption isotherm by 38% by reducing the polarity of the wood, while maintaining the viscoelastic characteristics of the lignin-hemicellulose complex. In terms of structural design, the preload setting of the transverse restraint strip can establish a reverse bending moment to offset the plane deviation caused by bending expansion.