Disperse agent is a surfactant with two opposite properties, lipophilicity and hydrophilicity, in the molecule. It can uniformly disperse the solid and liquid particles of inorganic and organic pigments that are difficult to dissolve in liquids. It can also prevent the sedimentation and agglomeration of the particles to form the amphiphilic reagent required for a stable suspension.
1. It is adsorbed on the surface of solid particles to reduce the interfacial tension between liquid-liquid or solid-liquid. Make the surface of agglomerated solid particles easy to wet.
2. The polymer-based dispersant forms an adsorption layer on the surface of the solid particles, which increases the charge on the surface of the solid particles and improves the reaction force between the particles that form a three-dimensional barrier.
3. Make the surface of the solid particles form a bi-molecular structure. The polar end of the outer dispersant has a strong affinity with water, which increases the degree to which the solid particles are wetted by water. The solid particles stay away due to electrostatic repulsion.
4. Make the system uniform, increase the suspension performance, no precipitation, and make the physical and chemical properties of the whole system the same.