Seven major effects of fillers on coatings

Coatings and fillers

Coatings are a chemical mixture, generally composed of four basic components: film-forming substances (including resins, emulsions), pigments (including coloring pigments, body pigments), solvents and additives (auxiliaries). Fillers in coatings are also called body pigments, or pigment extenders. They are the largest component of the four basic components of coatings except for film-forming substances, and they play the role of the skeleton of coatings. Fillers are divided into functional and non-functional fillers. Non-functional fillers mainly play an incremental role, thereby reducing the cost of raw materials for coatings. In addition to the incremental role, functional fillers also have the function of improving certain properties of coatings or coatings, such as controlling the rheology of coatings, improving adhesion, controlling gloss, improving hiding power, preventing corrosion and optimizing concentration.

The role of fillers

1. Fillers act as fillers for coatings, reducing the amount of resin used and reducing costs.

2. Fillers can increase the thickness of the paint film, making it plump and solid.

3. Fillers can give the paint better rheology and construction performance, and have thickening and anti-precipitation effects.

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 the paint and change the appearance of the coating, such as decolorization.

6. Fillers can cause the film-forming substance to react chemically, making it a whole, so that the coating can effectively block the light transmittance, improve water resistance and weather resistance, thereby extending the service life of the coating.

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

Precipitated barium sulfate from Yunfu Hongzhi New Materials Co., Ltd. can be used as a functional filler in coatings and is the best partner for coatings. If you want to know more, please feel free to contact us!