Wednesday, April 18, 2012

The information of Master Batch of Antibacterial Plastics


Master Batch of Antibacterial Plastics decription:The masterbatch is composed by the excess of chemical additives, carrier resin and dispersant. Masterbatch is a uniform set out the extraordinary amount of pigment (dye) is attached to the resin obtained aggregates.
Masterbatch mainly constitute
Pigments: generally divided organic pigments such as phthalocyanine green, etc.; inorganic pigments such as red iron oxide, titanium dioxide; dyes, such as restore pink, Disperse Orange. Polyolefin, PVC masterbatch is used in pigments, generally said that the dye can not be used for polyolefin coloration, otherwise it will cause severe migration.
Dispersant: wetting the surface of the pigment, the pigment further dispersed and stable in the resin, and must have good compatibility with the resin does not affect the quality of the coloring products. Polyolefin masterbatch dispersants are generally low molecular weight polyethylene wax or stearic acid zinc. Engineering plastics masterbatch dispersants commonly used polar low molecular weight polyethylene wax, magnesium stearate, stearic calcium.
Third, the carrier resin: the pigment evenly distributed and masterbatch granular. Select the carrier to be considered compatible with the colored resin, but also consider the masterbatch should be well-dispersed, and therefore the carrier mobility should be higher than the colored resin, the coloring does not affect product quality. Such as the use of larger melt index of similar polymers, masterbatch melt index higher than with the polymer, in order to ensure that the final products of the same color. PE, PP masterbatch select LDPE (low density polyethylene) resin as a carrier, PS, ABS masterbatch modified PS carrier.

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