What is a dispersant and what are its types?

As a special type of surfactant, the core characteristic of dispersants is that they are both lipophilic and hydrophilic. Dispersants can improve the dispersion of particles and prevent them from agglomerating, thereby increasing the surface area between particles and improving their reactivity and solubility. In addition, dispersants can protect particles from the influence of the external environment to achieve stability and long-term preservation.

For example, when solid dyes are ground, adding dispersants helps to crush the particles and prevent the crushed particles from agglomerating to keep the dispersion stable. Oily liquids that are insoluble in water can be dispersed into very small liquid droplets under high shear stirring. After stopping stirring, they quickly separate under the action of interfacial tension, and adding dispersants and stirring can form a stable emulsion. Its main function is to reduce the interfacial tension between liquid-liquid and solid-liquid.

In industrial production, it plays a vital role. It can evenly disperse those difficult-to-dissolve solid and liquid particles in the medium, effectively prevent the sedimentation and agglomeration of particles, and thus ensure the stability of the suspension. In addition, there are: improving gloss, preventing floating color, reducing flocculation, increasing storage stability, increasing color development, reducing viscosity, increasing pigment loading, and improving coloring power.

Therefore, dispersants are also surfactants. According to different chemical structures, dispersants can be divided into adsorption type, composite type, ionic type, non-ionic type and wetting type. Anionic type is the most used.

There are many types of dispersants, which promote the uniform dispersion of material particles in the medium to form a stable suspension. Dispersants are generally divided into two categories: inorganic dispersants and organic dispersants. Such as silicates, alkali metal phosphates and various organic compounds.

Its main function is to reduce the aggregation tendency between particles in the dispersion system. Whether it is preparing emulsions, wettable powders, or processing solid dyes and oily liquids, dispersants can significantly improve the dispersion performance of materials and ensure the long-term stability of the dispersion system.

Therefore, dispersants are not only a powerful assistant in chemical production, but also a key factor in improving product quality and production efficiency.

Dispersants are a chemical product because they are synthesized by chemical methods and are widely used in the chemical industry. The production of dispersants requires special chemicals, equipment and processes, and is a professional chemical process. In addition, dispersants also need to pay attention to safe operation during use and ensure their quality and purity to ensure the quality and effect of production.