Application versus particle size

The output of the disk centrifuge, a curve of optical density versus time, can be converted to a particle size distribution by using Stokes law to convert the time axis to a size axis and by the application of light-scattering theory to calculate the particle frequencies from the optical densities. As described herein, one obtains mass distributions with linear size increments or the equivalent area distributions with logarithmic increments. 

In applications like anti-slip, where mechanical stability of the micronized particle plays an important role, silica gel products are of advantage. As an example, silica gels withstand more easily the rather severe master-batch and extrusion conditions for PE- or PP-film production. As the particle size and structure is maintained, gel products are preferred versus precipitates. 

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