What Are The Functions Of The Dispersion And Carrier Of The Black Masterbatch

The black masterbatch has a dispersing effect, and at the same time it is a good carrier, the dispersion effect is mainly manifested in the uniform distribution of pigments into the resin, and the carrier mainly plays a transportation role, which is closely linked.
Regarding the dispersion of black masterbatch, it mainly refers to the further dispersion of the pigment and stabilization in the resin, and at the same time, it must have good compatibility with the resin and not affect the quality of the coloring product. Polyolefin masterbatch dispersants are generally made of low molecular weight polyethylene wax or zinc stearate. Engineering plastic masterbatch dispersants generally use polar low molecular weight polyethylene wax, magnesium stearate, calcium stearate, etc. At the same time, the fluidity of the black masterbatch carrier should be greater than that of the colored resin, and the quality of the product will not be affected after being colored.
If the same kind of polymer with a larger melt index is selected, the melt index of the masterbatch is higher than that of the polymer to ensure the consistency of the color of the final product. LDPE (low-density polyethylene) resin is selected as the carrier for PE and PP masterbatches, and modified PS is selected as the carrier for PS and ABS masterbatches.