Scratch-resistant and stain-resistant composition as well as preparation method and application thereof on surface of membrane material

The invention belongs to the technical field of materials, and discloses a scratch-resistant and stain-resistant composition as well as a preparation method and an application thereof on the surface of a membrane material. The composition comprises polyurethane, epoxy resin, olefine acid ester, fluorosilicone resin and nano oxide, and the nano oxide comprises nano silicon oxide and nano manganese dioxide. The composition also includes carbon nanotubes. According to the composition disclosed by the invention, in the presence of the polyurethane, the epoxy resin and the olefine acid ester, the fluorosilicone resin and the nano oxide are introduced, so that the scratch resistance and the stain resistance of a coating formed after the composition is photo-cured can be remarkably improved. The carbon nano tube is further introduced into the composition, and the carbon nano tube can interact with the nano oxide, so that the toughness of the coating is remarkably improved, and the bonding strength between the coatin