Super water repellent polymer hierarchical structure, heat exchanger having super water repellency, and manufacturing method therefor

A method for manufacturing a super water-repellent polymer hierarchical structure, comprising:

• forming a parent substrate having a ratchet structure formed on an upper surface thereof;
• applying a liquid polymer on the parent substrate;
• curing the applied liquid polymer;
• separating the cured polymer from the parent substrate;
• and
• forming a super water-repellent nano structure on the ratchet structure of the separated polymer surface,
• wherein the polymer having the super water-repellent nano structure formed thereon has a sliding angle of less than 10 degrees.

A method for manufacturing a super water-repellent polymer hierarchical structure, comprising:

• forming a first parent substrate having a ratchet structure formed on an upper surface thereof;
• applying a liquid polymer on the first parent substrate;
• curing the applied liquid polymer;
• forming a second parent substrate by separating the cured polymer from the first parent substrate;
• applying a liquid heterogeneous polymer on the second parent substrate;
• curing the applied liquid heterogeneous polymer;
• separating the cured heterogeneous polymer from the second parent substrate;
• and
• forming a super water-repellent nano structure on the ratchet structure on the surface of the separated heterogeneous polymer,
• wherein the heterogeneous polymer having a super water-repellent nano structure formed thereon has a sliding angle of less than 10 degrees.

A method for manufacturing a super water-repellent polymer hierarchical structure, comprising:

• forming a first parent substrate having a ratchet structure formed on an upper surface thereof and a super water-repellent nano structure formed on the ratchet structure;
• applying a liquid polymer on the first parent substrate;
• curing the applied liquid polymer;
• forming a second parent substrate by separating the cured polymer from the first parent substrate;
• applying a liquid heterogeneous polymer on the second parent substrate;
• curing the applied liquid heterogeneous polymer;
• and
• separating the cured heterogeneous polymer from the second parent substrate,
• wherein the separated heterogeneous polymer has a sliding angle of less than 10 degrees.

A method for manufacturing a super water-repellent polymer hierarchical structure, comprising:

• forming a parent substrate having ratchet structure formed on an upper surface thereof and a super water-repellent nano structure formed on the ratchet structure;
• forming a protective layer for preventing the detachment of the super water-repellent nano structure on the super water-repellent nano structure;
• applying a liquid polymer on the parent substrate;
• curing the applied liquid polymer;
• and
• separating the cured polymer from the parent substrate and washing the separated polymer,
• wherein the polymer separated from the parent substrate has a sliding angle of less than 10 degrees.

A method for manufacturing a super water-repellent polymer hierarchical structure, comprising:

• forming a first parent substrate having a ratchet structure formed on an upper surface thereof and a super water-repellent nano structure formed on the ratchet structure;
• forming a protective layer for preventing the detachment of the super water-repellent nano structure on the super water-repellent nano structure;
• applying a liquid polymer on the first parent substrate;
• curing the applied liquid polymer;
• forming a second parent substrate by separating the cured polymer from the first parent substrate and washing the separated polymer;
• applying a liquid heterogeneous polymer on the second parent substrate;
• curing the applied liquid heterogeneous polymer;
• and
• separating the cured heterogeneous polymer from the second parent substrate and washing the separated polymer,
• wherein the separated heterogeneous polymer has a sliding angle of less than 10 degrees.

A method for manufacturing a heat exchanger having super water-repellency, comprising:

• preparing a pre-manufactured heat exchanger;
• forming a nano/micro structure on at least a heat transfer surface of the heat exchanger by immersing the pre-manufactured heat exchanger in an etching solution;
• and
• vacuum drying the formed nano/micro structure.

A heat exchanger having super water-repellency, comprising:

• a heat transfer surface;
• and
• a nano/micro structure formed on a surface including at least the heat transfer surface,
• wherein the nano/micro structure is coated with oil.