Dispersant is a chemical substance widely used in fields such as chemical engineering, coatings, inks, ceramics, textiles, pharmaceuticals, etc. They can effectively disperse solid particles in solutions or suspensions and prevent their re aggregation or precipitation, thereby maintaining the uniformity and stability of the system. The following are the main functions and uses of dispersants:
Function:
Dispersion: The dispersant disperses solid particles in the liquid through the action of surfactants, forming a suspension to prevent particle aggregation or precipitation.
Stability: Dispersants can provide charges or adsorb on the surface of particles, forming electrostatic or spatial barriers that hinder the mutual attraction between particles, thereby preventing the re aggregation of solid particles.
Fluidity improvement: dispersants can reduce the friction resistance between particles, improve the fluidity of suspensions, lotion or colloids, and improve the wettability and processability of coatings, inks, etc.
Purpose:
Coatings and inks: Dispersants are commonly used in coatings and inks to evenly disperse pigments in the medium, improving the color saturation, glossiness, and settling resistance of coatings.
Oilfield: In oilfield exploitation, dispersants can be used to stabilize suspension systems, prevent the deposition of drilling debris, and improve the performance of drilling fluids.
Ceramics and glass: Dispersants can be used in the ceramics and glass industry to improve the flowability of suspensions or slurries and enhance the stability of forming, coating, and sintering processes.
Medicine: In the process of preparing drugs, dispersants can be used to disperse drug particles in solution, improving the solubility and absorption of the drug.
It should be noted that the selection of dispersants should be based on factors such as specific application system requirements, particle characteristics, environmental conditions, and safety, and comply with relevant regulations and safety operating procedures.