täyttöaineet

Täyttöaineet, also known as fillers, are substances added to materials to improve their properties, reduce costs, or both. In the plastics industry, they are commonly used to increase stiffness, reduce shrinkage, improve impact strength, and lower the overall density of the final product. Common fillers include calcium carbonate, talc, clay, and glass fibers. The choice of filler depends heavily on the polymer being used and the desired performance characteristics of the end product. For instance, calcium carbonate is often used in PVC applications to improve rigidity and reduce cost, while talc can enhance dimensional stability and heat resistance.

In construction, täyttöaineet are used in concrete, mortars, and plasters to improve workability, reduce cracking, and enhance durability. Sand and gravel are ubiquitous aggregate fillers in concrete. In paints and coatings, fillers are employed to control gloss, improve opacity, and increase viscosity. Pigments themselves can also act as fillers. The particle size, shape, and surface treatment of the filler significantly influence its effectiveness. Surface treatment is often applied to improve the compatibility between the filler and the polymer matrix, leading to better mechanical properties.

The use of täyttöaineet is a well-established practice across various manufacturing sectors. They play a crucial role in optimizing material performance and economic viability. Understanding the interaction between fillers and the base material is key to successful application.