Superhydrophobic porous membrane structure for underwater air layer holding and its method of fabrication

The present invention relates to a super-water-repellent porous membrane and a method for manufacturing the same, which supports a porous membrane having micropores formed therein and forms a closed structure when water adheres to the surface, thereby forming a closed cell ) Having a convex structure and a coating layer for enhancing super water repellency and durability on the surface of the porous membrane structure. The positive contact angle with respect to water is 150 ° or more and the sliding angle is 5 ° or less, The air layer can be more stably maintained in water.