Basic principle of dispersant

The formation of stable dispersion system not only uses electrostatic repulsion, that is, the negative charges adsorbed on the surface of particles repel each other, to prevent the adsorption/aggregation between particles and eventually form large particles to stratify/settle, but also uses the theory of spatial effect, that is, when the particles adsorbed with negative charges are close to each other, they will slide and cross each other.

Such sterically hindered surfactants are usually nonionic surfactants. Flexible application of electrostatic repulsion combined with steric hindrance theory can form a highly stable dispersion system. The polymer adsorption layer has a certain thickness, which can effectively block the mutual adsorption between particles, mainly relying on the polymer solvation layer.

Mechanism of extended data dispersant;

1, adsorbed on the surface of solid particles, reducing the interfacial tension of liquid-liquid or solid-liquid. So that the surfaces of coagulated solid particles are easy to wet.

2. Polymer dispersant, which forms an adsorption layer on the surface of solid particles, increases the charge on the surface of solid particles and improves the reaction force between particles that form three-dimensional obstacles.

3. The surface of solid particles forms a double-layer structure, and the polar end of the external dispersant has strong affinity with water, which increases the degree of wetting of solid particles by water. Due to electrostatic repulsion, solid particles are far away from each other.

4, the system is uniform, the suspension performance is increased, and no precipitation is generated, so that the physical and chemical properties of the whole system are consistent. As mentioned above, solid particles in liquid can be stably dispersed by using dispersant.

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