Chamically robust superhydrophobic polyvinylidene fluoride films with grafting crosslinkable fluorinated silane

摘要

The present invention relates to a method of making a film having chemically robust superhydrophobic properties. Specifically, the present invention comprises the steps of (first step) preparing a vinylidene fluoride-based polymer solution; (Second step) preparing a mixed solution by mixing fluorinated silane with the vinylidene fluoride polymer solution of the first step; And (third step) spray coating the mixed solution of the second step on the substrate. Includes. According to the present invention, a film having superhydrophobic properties can be prepared by forming a coating layer having nano and micro structures on the surface of a substrate using a mixed solution prepared by adding fluorinated silane to a vinylidene fluoride polymer solution. have. Since a film made of a coating layer of such a vinylidene fluoride-based polymer and a fluorinated silane mixed solution can be manufactured using a simple spray process, superhydrophobic coating can be performed on a large area at low cost. In addition, a film having superhydrophobic properties formed by the above method can exhibit excellent stability to a solvent, thereby increasing suitability for chemically robust superhydrophobic applications.