Dispersion for Stir

When ultrasonic waves act on liquids, a large number of small bubbles can be generated. One reason is that partial tensile stress occurs in the liquid to form a negative pressure. The decrease in pressure makes the gas originally dissolved in the liquid supersaturate and escape from the liquid and become small bubbles. Another reason is that the strong tensile stress "tears" the liquid into a cavity, which is called cavitation.

Introduction：
First of all, traditional mechanical stirring and ultrasonic stirring are both physical mechanical stirring. The former uses a stirring paddle to rotate at a high speed to act on the material. Ultrasonic is the shear force generated by high-frequency vibration to act on the material, causing the liquid to oscillate, thereby mixing. The role of liquid materials. Another difference is that traditional mechanical stirring is a process of mixing liquids macroscopically, and it is difficult to mix them thoroughly. The stirring power can be relatively large, and the macro stirring speed is also faster. Therefore, mechanical stirring is suitable for those occasions that do not require high mixing degree. However, the ultrasonic mixer mixes liquid materials from a microscopic (molecular level) perspective. The mixing degree is high, and the mixing is fine and full. Therefore, the ultrasonic mixer is suitable for those fields that require high mixing degree and fine molecular particles. However, the range of ultrasonic radiation is limited, and both have their own characteristics. In actual application, it also learns from each other. If it can be used in conjunction with traditional mechanical stirring, it can not only ensure the stirring efficiency, but also ensure the stirring effect.