The Working Principle And Selection Method Of Dispersants

Detailed explanation of the action principle and selection method of dispersants
What is a dispersant - a surfactant that can stabilize the dispersion of solid particles in a solid-liquid suspension in the medium is called a dispersant.
The principle of action of dispersants - dispersion is the process of evenly distributing solid particles in a dispersion, which has a certain degree of stability.
Mainly manifested in:
1. Adsorbed to the surface of solid particles, making the surface of condensed solid particles easy to wet.
2. A polymer type dispersant forms an adsorption layer on the surface of solid particles, increasing the surface charge of solid particles and enhancing the reaction force between particles that form three-dimensional obstacles.
3. The surface of solid particles forms a bimolecular layer structure, and the polar end of the outer dispersant has strong affinity with water, increasing the degree of wetting of solid particles by water. Solid particles move away from each other due to electrostatic repulsion. 4. Make the system uniform, increase suspension performance, and do not precipitate, making the physical and chemical properties of the entire system the same
As mentioned above, the use of dispersants can stably disperse solid particles in liquids.