ARTICLE COATED WITH COATING FILM, AND FUNCTIONAL ARTICLE COATED WITH COATING FILM USING THE SAME

摘要

The present invention provides a super-hydrophobic substrate that includes a substrate; an undercoating film formed on the substrate having minute recesses and projections in its surface; and a hydrophobic film formed on the minute recesses and projections. The surface shape of the hydrophobic film reflects the minute recesses and projections. A contact angle CA and a tumbling angle TA of a water droplet on the surface of the hydrophobic film satisfy relationships: CA ≥ 150 DEG and TA ≤ 15 DEG or 150 DEG > CA ≥ 145 DEG and TA ≤ 5 DEG .