Industrial Coatings / Powder Coatings / Baryte

Baryte

Natural baryte (barium sulphate, chemical formula BaSO4) can be characterised by:

 

  • High inertness in various media
  • High density and, as a result, low oil absorption
  • Medium Mohs hardness of 3
  • Easy wetting
  • Easy to disperse.
    (also compared to precipitated barium sulphate)

 

Natural barium sulphate comes without any residual salts when compared to precipitated grades. In addition, natural barytes are easier to disperse than precipitated grades.

 

Basic properties

Property B C D Unit
Moisture 0.1 [%]
pH 9 [-]
Hardness (Mohs) 3.5 [-]
Refractive index 1.64 [-]
Colour (D65/ 10°) L* 96 91.5 beige [-]
BaSO4 + SrSO4 98.5 96.5 [%]
SiO2 1 3 [%]
Fe2O3 0.05 0.3 [%]
Density 4.4 [kg/ dm3]

 

 

Product overview

Product Grade D50

[µm]

D97

[µm]

OA

[g/ 100 g]

Portaryte B2EX 1.1 2.8 12
B3 1.3 3.7 12
B4 1.5 4.5 11
B5 1.9 6.0 11
B8 2.2 8.0 11
B10 2.6 11.0 10
B15 3.4 16.0 10
B25 5.5 25.0 10
B45 13.0 45.0 9
B40/10 17.0 38.0 12
B50/10 21.0 60.0 11

 

Product Grade D50

[µm]

D97

[µm]

OA

[g/ 100 g]

Portaryte C15 3.5 16 10

 

Brand Grade D50

[µm]

D97

[µm]

OA

[g/ 100 g]

Portaryte D15 4.5 16 10
D20 6.0 20 10
D40 8.0 36 9
D50 10.5 54 9
D80 13 85 8

 

Production locations Portaryte

 

 

Application

Baryte will provide:

  • Chemical resistance: due to its inert nature, baryte provides good chemical resistance compared to conventional fillers.
  • Gloss control: with the availability of ultrafine baryte (Portaryte B3) and a product with an optimised particle size distribution (Portaryte B40/10), it is possible to apply coatings with a broad range of gloss levels.
  • Increasing density: due to its high density, baryte is very suitable to increase the density of the powder. This is a very useful tool when the product is sold by weight.
  • UV resistance: being insensitive to UV radiation, baryte will reduce the coating’s degradation.

 

Sibelco © 2022