Definition and Mechanism of Antiflocculation Suspension Solution
The basic concept of anti-flocculation suspensions
Antiflocculation suspension is a system that keeps particles dispersed and prevents aggregation by adding a dispersant. This type of system has high stability, prevents settling and agglomeration, and is widely used in ceramic pastes, coatings, pharmaceuticals, food processing, and other fields.
Antiflocculation Mechanism
Electrostatic Stabilization: The dispersant makes the surface of the particles with a higher charge, which enhances the electrostatic repulsion and prevents the particles from aggregating.
Steric Stabilization: The polymer dispersant forms a protective layer on the surface of particles, preventing particles from approaching and aggregating.
Adsorption effect: dispersant molecules form a stabilizing layer on the surface of particles to improve system stability.
Types of Antiflocculants
Inorganic dispersant: such as sodium hexametaphosphate (SHMP), to enhance the surface charge of the particles, improve electrostatic stability.
Organic dispersants: such as sodium polyacrylate (PAAS), polycarboxylates, to improve electrostatic repulsion and spatial stability.
Surfactants: such as polyvinyl alcohol (PVA), polyvinylpyrrolidone (PVP), widely used in ceramics, coatings and cosmetics industry.
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