What is Highly Dispersed Particles of PPT Silica?
*Particle size difference
*Insolubility of ultrafine particles
*Relativity of dispersion degree
*Soft reunion and hard reunion
*soft agglomerate
The particles adhere to each other by weak force.
For example, van der Waals force, electrostatic force and hydrogen bond. General chemical or mechanical action can be dispersed. Hard agglomeration
*The particles adhere to each other by strong force.
For example, ionic bonds and covalent bonds.
It takes high energy ball milling to disperse.
DISTRIBUTION OF JK-280 SIZE DETERMINATED BY LASER PARTICLE SIZER (OPTIMAL METHOD)
Summary
The aggregation of precipitated silica is formed by a strong interaction between primary particles.
Hard reunion.
The size and size distribution of aggregates ultimately determine the highly dispersed silica.
Maximize possible decentralization.
Laser particle size analyzer is the best way to measure the size and size distribution of aggregates.
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