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What is Masterbatch ?


What is Masterbatch ?

What is Masterbatch ?

Masterbatch is composed with excessive chemistry accessory ingredient, carrier resin and dispersants. Color masterbatch is made of ultra quantity of pigments (dyestuffs) which carries evenly in the resin.

Color masterbatch main components:

First, Pigment

Generally pigment is divided into organic colour pigment, like phthalocyanine green and the inorganic colour pigment like oxidation iron oxide red and the titanium. Dye like reductant pink, scattered orange and so on. Polyolefine and PVC color masterbatch use the pigment, generally speaking that the dye cannot use in the polyolefine coloration, otherwise it will cause the serious migration.

Second, Dispersants

Dispersants mainly makes the pigment surface moist which benefits further dispersing in the pigment, and stabilizes in the resin, at the same time it must have good compatibility with the resin, and does not affect the coloring product quality. Polyolefine color masterbatch of dispersant generally adopts the low molecular polyethylene wax or zinc stearate and so on. Engineering plastics color masterbatch of dispersant usually adopts the heteropolarity low molecular polyethylene wax, magnesium stearate, and calcium stearate and so on.

Third, Carrier resin

Carrier resin makes the pigment uniform distribution and causes the color masterbatch to be granular shape. Choosing carrier must consider the compatibility with coloring resin and also must also consider masterbatch should have good dispersivity, therefore the carrier fluidity should be higher than the colored resin, and simultaneously it affects the product quality after colored. For example, we select similar high polymer with high melt index, enable the melt index of masterbatch higher than the colored high polymer to ensure consistent luster in the final product. WE choose LDPE resin (low density polyethylene) as the carrier for PE, PP color Masterbatch, and modified PS as the carrier for PS, ABS Masterbatch.

Masterbatch includes:

  1. Color masterbatch
  2. White masterbatch
  3. Black masterbatch
  4. Filler masterbatch
  5. Additive masterbatch
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