The invention provides a hydrophilic and hydrophobic composite
wetting microstructure steam cavity and a manufacturing method thereof, and relates to the technical field of heat dissipation devices. The hydrophilic and hydrophobic composite
wetting microstructure steam cavity comprises an
evaporation end and a condensation end, the surface of the
evaporation end comprises a micro-channel hydrophilic area and a micro-array hydrophilic area, and the micro-channel hydrophilic area surrounds the micro-array hydrophilic area; the surface of the condensation end comprises condensation hydrophilic areas and condensation hydrophobic areas which are distributed at intervals, and the
evaporation end and the condensation end are assembled to form a flat plate structure with a cavity in the middle. Different wettability surfaces of the condensation hydrophilic area and the condensation hydrophobic area are compounded, rapid
nucleation condensation can be achieved, droplet-shaped
condensation heat transfer of rapid falling of liquid drops in the condensation hydrophobic area and capillary suction rapid liquid
discharge of the micro-channel hydrophilic area at the evaporation end are combined,
condensation heat transfer of a working medium is enhanced, liquid
backflow circulation is accelerated, and the condensation efficiency is improved. The temperature uniformity of the hydrophilic and hydrophobic composite
wetting microstructure steam cavity is greatly improved, and batch forming of large-area microstructure functional surfaces is achieved through the in-situ heating imprinting forming micro-imprinting technology.