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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