The masterbatch is a granular solid with a particle size of 0.1 to 3 mm. 0.1 mm (100 μm) is a powder composed of fine particles; 1-10 μm is a fine powder; 0.1-1 μm is a fine powder; ”3 mm particles are crushed solid pieces. The smaller the particle size, the denser the resulting mixture. However, the smaller the particle size of the same kind of solid, the easier it is for the particles to agglomerate with each other. Such agglomeration is not easy to open when mixed with another solid particle, and it is difficult to disperse in the plastic melt.
Particle size distribution: The filler loading with a wide particle size distribution of the masterbatch is denser than the narrower particle size distribution. Since the small particle size can enter the gap between the large particles, it is difficult to mix evenly if the two kinds of powders with different particle sizes are mixed.