1 results about "Capillary wave" patented technology

The application discloses a method and device for preparing microdroplets or microcapsules by electrostatic / ultrasonic synergistic spraying, directly applying an electrostatic field to an ultrasonic nozzle which is insulated, and adopting electrostatic and ultrasonic synergistic spraying on liquid, so that the sprayed liquid is charged, and is subjected to the action of capillary waves generated by high-frequency mechanical vibration in ultrasonic atomization and the electrostatic force given by the external electrostatic field. Under the synergistic action, the liquid at the wave peak of the capillary waves can more efficiently overcome the surface tension and separate from the liquid film, so that the formation and separation of droplets are promoted, and microdroplets with small and uniform particle sizes are prepared. The microdroplets are prepared into microcapsules. The insulation treatment is to isolate the whole titanium alloy nozzle body from the piezoelectric ceramic group. The prepared microcapsules have the advantages of shell-core structure, small and uniform particle size, excellent dispersity, low impurity content, thin and dense capsule wall, high effective core liquid content and the like.