Superhydrophobic surfaces with excellent abrasion resistance based on benzoxazine/mesoporous SiO2

Superhydrophobic surfaces with excellent abrasion resistance were obtained by the spraying method using benzoxazine/mesoporous SiO2. Based on microstructural and nanostructural materials with low surface energy, the surfaces formed when the mesoporous SiO2 content reached more than 15%. Relying on the re-entrant features of bulk materials, the self-similar structure of additive and an “organic-inorganic” interpenetrating network, the superhydrophobicity property was maintained after over 400 cm of abrasion at 1.6 kPa, which surpassed that of benzoxazine/nano SiO2 system. The findings concerning mesoporous particles and benzoxazines are conducive to future development of robust superhydrophobic coating technology.