Dispersants are a type of chemical substance commonly used in material processing and industrial applications to stabilize particles or dispersed phases and prevent their precipitation and agglomeration. There are various types and effects of dispersants, and the following are some common dispersants and their effects:
Surfactants: Surfactants are a type of compound with hydrophilic and hydrophobic groups, such as sulfonates, carboxylates, etc. They can reduce the surface tension of liquids in water, promote the dispersion of particles or dispersed phases, and prevent aggregation.
Chelating agent: Chelating agent is a type of chemical substance that can undergo complex reactions with metal ions. They can form stable complexes that encapsulate metal ions, preventing their precipitation and agglomeration into clusters.
Polymer dispersants: Polymer dispersants are a type of compound with high molecular weight and branched structure, such as polyvinyl alcohol (PVA), sodium polyacrylate (PAA), etc. They can disperse and stabilize particles in liquids through electrostatic repulsion or spatial shielding effects.
Bacillus subtilis polymerase: Bacillus subtilis polymerase is a natural product that has the function of dispersing and stabilizing particles. It can form structurally stable colloidal particles in liquids, preventing particle precipitation and condensation.
Inorganic colloids: Inorganic colloids such as alumina colloids, silicon colloids, etc. can disperse particles through charge interaction or colloidal adsorption, and form stable colloidal systems.
The functions of dispersants include:
Prevent the precipitation and agglomeration of particles or dispersed phases;
Provide stability and persistence of decentralized systems;
Promote the dispersion and uniform distribution of suspended solids;
Improve the flowability, dispersibility, and wettability of materials;
Improve product quality and performance.
It should be noted that the specific selection of dispersant should be determined based on the characteristics of the required dispersion system, application requirements, and manufacturer recommendations. When using, the recommendations and usage methods on the product manual should be followed to ensure safety and optimal dispersion effect.