A green protection strategy for wooden furniture: Chemically robust superamphiphobic coating via fluoroalkylsilane modification

The pervasive use of high-VOC solvent-based coatings in wooden furniture poses critical environmental challenges. Herein, we engineer a bio-inspired superamphiphobic coating through molecularly designed integration of Si-Ti@PDMS sol with fluorosilanes, achieving dual liquid-repellent functionality on wood substrates. The hierarchical micro-nano architecture (Rq = 271 nm) coupled with ultralow surface energy yields excellent wetting properties, and the water contact angle (WCA) is 159.2°, and the sliding angle (SA) is 1°; the contact angles (CA) of ethylene glycol and oleic acid are 152.1° and 141.9°, respectively. Crucially, the coating demonstrates exceptional durability against physicochemical stressors, including acid/alkali corrosion, organic solvents, UV radiation, and mechanical abrasion, while meeting stringent furniture industry standards for thermal shock resistance, impact tolerance, and wear endurance. The green protection technology of the wood surface eliminates VOC emissions during application and extends furniture lifespan through intrinsic self-cleaning and anti-fouling mechanisms. The work establishes a scalable green coating platform that bridges nanomaterial innovation with sustainable manufacturing. It is beneficial to use green superhydrophobic coatings as an environmentally friendly solution for wood protection.