Surface Treatment Composition for Friction Durability

The invention uses a composite coating system comprising a base coat layer and a fluorine-containing silane compound layer. The base coat contains a polymer with carboxyl groups that forms a durable adhesive bond with the substrate, while the fluorine-containing silane layer provides water and oil repellency. This composite structure allows the durable base layer to provide friction durability while the fluorine layer provides repellency properties.

The invention changes the chemical parameters of the coating system by introducing a base coat layer with specific polymer compounds containing carboxyl groups. This parameter change enables strong chemical bonding to the substrate through coordination bonds with metal oxide surfaces, thereby improving friction durability while maintaining the water and oil repellency provided by the fluorine-containing silane layer.

The invention creates a composite coating system where the base coat layer contains polymers with carboxyl groups that provide strong adhesion to both resin and glass substrates. The fluorine-containing silane layer is applied over this adhesive base layer, allowing the system to achieve both strong adhesion and antifouling properties through the combined functionality of the two layers.

The base coat layer acts as an intermediary between the substrate and the fluorine-containing silane layer. It provides chemical groups that bond to the substrate and creates a surface that enhances adhesion, while allowing the fluorine layer to provide antifouling properties. This intermediary layer resolves the conflict between adhesion and antifouling requirements.