Wollastonit

© Quarzwerke GmbH

Wollastonite: Reinforcement, low thermal expansion
Wollastonite is a natural occurring calcium silicate. It is formed from calcium carbonate and silicon dioxide at about 450°C. The structure of the wollastonite particles depends not only on natural conditions but also to a large extent on the preparation and size reduction techniques employed. Using specific processing technologies wollastonite powders with particle structures from nearly block-like with a low aspect ratio (LAR) (TREMIN 283-products) to exceptional acicular structures with a high aspect ratio (HAR) (TREMIN 939-products) are achieved.

Key applications:

• engineering technical plastics (i.e. polypropylene, polyamide, polyurethane) for the automotive industry
• Fluoro silicone rubber e.g. for oil seal
• friction linings
• powder coatings
• corrosion protection (i.e.epoxy- or polyurethane-based aqueous systems)

High Performance Fillers based on wollastonite: TREMIN 283, TREMIN 939

Products of Quarzwerke GmbH