Second, dispersion

Dispersion is a colloidal dispersion system consisting of solid or liquid particles dispersed in liquid. Compared with water-based emulsions, the dispersion has a weak interaction force between particles, so it is easy to disperse and not easy to gather.

Dispersions have a wide range of applications, such as pharmaceutical preparation of oral suspensions or sustained-release agents; In the preparation of pigments or automotive paints, dispersions can be used as thickeners and stabilizers.

Third, the performance difference between water-based emulsion and dispersion

1.Stability

The stability of water-based emulsions is higher than that of dispersions. Because the attraction between particles in water-based coatings is greater, it is easy to coagulate and precipitate. However, the particles in the dispersion have less interaction force and are easy to aggregate and precipitate.

2.Water resistance

Water-based emulsion has better water resistance, and can form emulsion in water, without stratification; Dispersions generally do not have water resistance.

3.Transparency

The transparency of dispersions is generally higher than that of water-based emulsions, which makes dispersions have a wide range of application prospects. However, due to the dispersion of oil droplets in the emulsion, water-based emulsions tend to have better covering power than dispersive emulsions.

4.Economy

In the case of the same performance, the cost of the dispersion is lower than that of the water-based emulsion, because the preparation of the dispersion system does not require surfactants and other special additives.

In short, water-based emulsions and dispersions have their special properties and advantages. According to the actual needs and application scenarios, it is particularly important to choose a suitable decentralized system.