Ultrasonic dispersion refers to the process of dispersing and de-agglomerating particles in the liquid through the "cavitation" effect of ultrasonic waves in the liquid using liquid as a medium.
Ultrasonic technology, as a physical means and tool, can produce various extreme conditions in liquids. This phenomenon is called sonochemical effect, and related ultrasonic equipment is called ultrasonic sonochemical equipment (abbreviated as "sonochemical equipment") . Ultrasonic dispersion equipment is an application of sonochemical equipment, which can be used for water treatment, solid-liquid dispersion, de-agglomeration of particles in liquid, and promotion of solid-liquid reaction.
Due to the thermal motion of particles (atoms, molecules or molecular groups), the phenomenon of matter migration spontaneously produced is called "diffusion".
Diffusion can be carried out between solid, liquid, and gas phases of the same substance, or between different solids, liquids and gases, mainly due to differences in concentration or temperature. Generally, it diffuses from the area with higher concentration to the area with lower concentration, until the concentration of each part in the phase reaches uniformity or the concentration between the two phases reaches equilibrium. When substances are in direct contact with each other, it is called free diffusion. If the diffusion is through the isolation material, it is called penetration.
Diffusion phenomenon plays a big role in nature, it keeps the same composition of the atmosphere around the entire earth's surface. The diffusion of various salt solutions contained in the soil facilitates the absorption of plants and facilitates growth. In addition, diffusion is used in many industries such as semiconductors and metallurgy. Diffusion, heat conduction and viscosity are commonly known as transport phenomena. They move matter (mass), heat, and momentum from one position to another. And to achieve uniformity of concentration or temperature.
Ultrasonic dispersion can be divided into emulsion dispersion (liquid-liquid dispersion) and suspension dispersion (solid-liquid dispersion), and has been applied in many fields. The application of ultrasonic for the dispersion of suspensions is: the dispersion of titanium oxide in water or solvents in the coating industry, the dispersion of dyes in molten paraffin, the dispersion of drug particles in the pharmaceutical industry, and the powder emulsion in the food industry. The dispersion and so on.