Paint dispersants are mainly composed of organic solvents, such as alcohols, ketones, esters and so on. The main components of paint dispersants may include the following:
1. Organic solvent: common toluene, xylene, acetone, etc. , mainly used to dissolve pigments and resins, so that it can be evenly dispersed in the solvent.
2. Surfactant: such as sodium dodecylbenzene sulfonate, Sodium lauryl sulfate, etc. , mainly used to reduce the surface tension of pigments and resins, promote the wetting and dispersion of pigments.
3. Preservative: Used to prevent paint dispersants from being contaminated by microorganisms during storage and use.
4. Stabilizers, such as Polyvinyl Alcohol and polyvinyl alcohol, are used to increase the stability of dispersants and to prevent pigments and resins from re-aggregating during the dispersing process.
5. Auxiliaries: according to the need to add some PH adjustment, increase mobility, improve wear resistance and other auxiliaries.
For example, alkaline dispersants can be used to adjust the PH of paint dispersants. The proportion and type of these ingredients can be adjusted according to different paint types and use requirements.
The main uses of paint dispersants include:
1. As a thinner: paint dispersant can be used to adjust the viscosity of paint, make it easier to smear and coating.
2. As a solvent: paint dispersant can dissolve paint pigments and fillers, make it evenly dispersed in the solution, improve the color and quality of paint.
3. As an emulsifier: paint dispersant can be paint grease and water dispersed together, the formation of emulsion liquid, thus making paint more easy to contact and adhere to the substrate.
4. As a stabilizer: paint dispersant can prevent paint pigments and fillers in the precipitation and layering, to maintain the stability and durability of paint. In general, paint dispersants can improve the fluidity, uniformity and stability of paint, improve the quality of paint and use effect.