Ultrasonic processors for liquid-liquid, liquid-solid material entirely depend on the strong cavitation effect, and togather with thermal effect and mechanical effect in solution.
1) Cavitation effect: Under the action of ultrasonic, the bubble grows and collapses in liquid.
2) Thermal effect: Ultrasonic absorbed in propagation medium, frication effect from different medium boundary, cavitation releases a lot of heat when the bubble collapses.
3) Mechanical effect: Ultrasonic can make medium particle produce mechanical vibration, forming unidirectional strong force to change the arrangement of the polymer molecular chain, and further the rheologic characteristics of polymer is changed.
Because of these three functions, inside of solution will form countless tiny explosion reaction districts, which will break all barriers to promote violently collisions between the molecules. As below figure shows, we can clearly understand the action mode of ultrasonic in solid-liquid two-phase medium.
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