Wollastonite

Description

Sibelco wollastonite is characterised by:

shape (available in acicular and non-acicular form)

medium Mohs hardness of 5

alkaline nature

high brightness and whiteness

low moisture and oil absorption

he natural mineral wollastonite is a very versatile calcium silicate whose crystal structure consists of needle-shaped crystals.

It is characterized by :

a low absorption of water and oils

a high thermal stability

a low solubility in water

medium hardness (4.5 on the Mohs scale)

variable shape coefficient (ratio of length to diameter).

Product Details

Wollastonite is used in various applications and in a wide range of manufacturing processes.

Plastics: improved dimensional stability, impact and scratch resistance. Increased insulating and fire resistance properties.

Paints: anti-corrosion properties of industrial coatings. Optimization of mechanical performance (hardness, adhesion and flexibility).

Ceramics: increase in resistance by limiting cracks and fissures.

Adhesives and sealants: improvement of dimensional stability and mechanical resistance (tensile strength, sagging and abrasion resistance). Improvement of rheology.

Concrete: reinforcement of cement slabs, improvement of the wet and mechanical properties of concrete; its lightness is also an advantage.

Geopolymers: improvement of rheology to facilitate extrusion

Wollastonite (different mesh sizes) Standard types used as functional filler in ceramics, refractories, paints rubber and plastics.

Wollastonite Super Fine Its gained by careful milling of manual-selected Wollastonite ore with good needle-like crystal. It is commonly used as functional filler in thermoplastics.