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Particle size distribution (Granulometry)

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Description of key information

TGIC is sold as a granulate with a average particle size diameter of 4-8 mm.  Smaller particles are possible due to transport shaking and abrasion between particles. However, this fraction generally remains negligible.

Additional information

TGIC is sold as a low dust granulate with particle size diameters of 4 - 8 mm.

During the entire process of formulation non-significant amounts of dust are generated.

For powder coating application, however, the formulation containing 4 -10% TGIC is ground to a fine powder of particle size 5 -20 microns in order to be electrostatically applicated to charged surfaces.

According to NICNAS (1994) the particle size distribution for a TGIC technical grade granules:

0.003% < 10 mm, 0.12% < 150mm, 99.6% > 400 mm.

Particle size distribution of two powder coatings:

a) 99.7% < 105 mm, 6.2% < 9.56 mm, 2.3% < 7 mm; and

b) 96% < 106 mm, 4.0% < 9.4 mm, 1.0% < 6.6 mm, before grinding