barium sulfate manufacturer

Coatings and fillers

Coatings is a chemical mixture, composed of four basic components: film-forming substances (including resins, emulsions), pigments (including coloring pigments, extender pigments), solvents and additives (auxiliary agents). The filler in the coatings is also called the extender pigment, or the pigment extender, which is the largest component of the four basic components of the coatings except for the film-forming substance, and bears the skeleton effect of the coatings. Fillers are divided into functional and non-functional. Non-functional fillers mainly play an incremental role, thereby reducing the cost of raw materials for coatings. Functional fillers have the function of improving certain properties of coatings or coating films, such as controlling the rheology of coatings, improving adhesion, controlling gloss, improving hiding power, preventing corrosion and optimizing concentration, etc.

Function of fillers

1. Fillers is used as the fillers of the coatings, reducing the amount of resin and reducing the cost.

2. Fillers can increase the thickness of the coatings film, making the coatings film plump and firm.

3. Fillers can endow the coating with better rheology and construction performance, and have the functions of thickening and anti-sedimentation.

4. Fillers can improve the mechanical strength of the paint film, improve the wear resistance and durability of the paint.

5. Fillers can adjust the optical properties of coatings and change the appearance of coating films, such as decolorization, etc.

6. Fillers can chemically react the film-forming substance to make it a whole, so that the coating film can effectively block the light penetration rate, improve water resistance and weather resistance, thereby prolonging the service life of the coating film.

7.Fillers can play an auxiliary role in the chemical properties of the coating, enhance rust resistance, moisture resistance and flame retardancy, etc.

Our Precipitated Barium Sulfate can be used as a functional filler in coatings and is the best partner of coatings. If you want to know more information, welcome to consult us!