Abstract

A novel fluoro-silicone modified waterborne polyurethane emulsion was synthesized by using alcohol hydroxy-fluorosiloxane as the fluoro-silicone modified monomer of WPU (water-based polyurethane), and the GO/FSiWPU leather finishing agent was prepared by blending with graphene oxide (GO). The structure of FSiWPU emulsion and latex film was analyzed by FT-IR and XPS. The water contact angle, bacteriostatic and other application properties of the coated leather were also tested. FT-IR and XPS analysis showed that the fluorine silicon monomer was successfully introduced into the WPU chain segment. The contact angle of latex film to water is 121.95°. The antibacterial experiment showed that the diameter of Escherichia coli inhibition zone was about 10 mm in the leather sample coated with GO/FSiWPU emulsion (leather sample test diameter was 5 mm), indicating that the coated leather sample had excellent antibacterial performance. At the same time, the addition of GO and fluorosilicon monomer also improved the tensile strength, softness, yellowing resistance and wear resistance of the leather sample.