Preparation of Super-Hydrophobic Surface via Fluorinated Epoxy Resin and Nano-SiO2

The super-hydrophobic surface has been widely studied for its self-cleaning effect, but most of its preparation methods have disadvantages, such as low cross-linking degree and the need to use an organic solvent. In this paper, aqueous fluorinated epoxy polymers P(GMA-r-HEMA-r-St) (PGHS)-g-TFA was prepared by conventional radical polymerization method, which have low surface energy chains and cross-linked chains, was hybridized with nano-SiO2 modified by KH550, to prepare the super-hydrophobic coatings on cotton. The water contact angle (CA) and the durability of the super-hydrophobic surface were tested. The CA can reach 160° and the durability can also reach 80 min. The introduction of HEMA makes the obtained polymers can be dissolved in water, which reduced the use of organic solvents.