Industrial Coatings / General Industrial, Marine and Protective Coatings / Wollastonite

Wollastonite

Wollastonite (silicate, chemical formula CaSiO3) exists in an acicular and non-acicular form.

Wollastonite can be characterised by:

 

  • Shape (non-acicular/ acicular)
  • Medium Mohs hardness of 5
  • Alkaline nature.

 

Basic properties

Property F/ FG G Unit
Moisture < 0.2 0.2 [%]
pH 10 [-]
Hardness (Mohs) 5 [-]
Refractive index 1.63 [-]
L.O.I. 3.5 n.d. [%]
Density 2.9 [kg/ dm3]

Acicular

Non-acicular

 

 

Product overview

Product Grade D50

[µm]

OA

[g/ 100 g]

L*
Casiflux FG20 18 54 94
F75 28 59 90
G20 10.5 30 96
G38 18 28 96

 

Production locations Casiflux

 

Application

Wollastonite will provide:

 

  • Chemical resistance: Wollastonite has a synergistic effect with dedicated anti-corrosive pigments, such as zinc phosphates.
  • Mechanical reinforcement: due to its acicular structure, wollastonite will mechanically reinforce the binder matrix.
  • Abrasion resistance: due to its hardness of 5 on Mohs scale, wollastonite will increase the coating’s resistance to wear.

 


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