Enhanced interfacial bonding strength of superhydrophobic wood through chemical etching and silane coupling agent treatment

Superhydrophobic modification transforms the wood surface into a non-wetting state, which hinders the effective spreading and penetration of the adhesive at the gluing interface. In this study, a wet chemical method was used to optimize the wettability of the glued interface of superhydrophobic wood (S-wood) through NaOH@KH-550 synergistic treatment. The method can improve the structrue and chemical condition to increase the adsorption capacity of the wood surface for the adhesive, and the bond strength of S-wood increased to 3.21 MPa, which was beneficial to the efficient use of S-wood in construction and furniture fields. [Display omitted] ●A wet chemical method was proposed to improve the bond strength of superhydrophobic wood.●The method can increase the adsorption capacity of the superhydrophobic wood surface for the adhesive.●The method provide a novel design concept for improving the bond strength of superhydrophobic wood.