Our calcined products Silfit and Aktifit are based on the standard product Sillitin Z 86. A downstream thermal process is used to expel the crystalline water in the Kaolinite portion and new Mineral phases are formed practically amorphous. The silica portion remains inert at the temperature used.
The resulting products have an outstanding high degree of brightness and color neutrality. Areas of application include high-voltage cables, light-colored rubber compounds, thermoplastics and as a partial replacement for titanium dioxide, especially in paints and varnishes.
All calcined products have a particle size that approaches that of the uncalcined basic material Sillitin Z 86.
The measuring method for this particle size distribution is based on the Fraunhofer analysis of diffraction spectra.
The analyses were performed with a Matersizer 3000, which is a laser device from Malvern Instruments.
With regard to the CIELAB color values L*, a* and in particular b*, the calcined products are significantly brighter and more color neutral than the classic products Sillitin and Aktisil.
| Name | Short description |
|---|---|
| SILFIT Z 91 | Calcined product based on Sillitin Z 86. |