PE Wax In Color Masterbatch
In the production of colored plastic industries, there are many problems in terms of color uniformity and stainlessness of the final product, which are related to pigments and color pigments.
Pigmented powders for the production of color Masterbatches can cause problems such as Destructive effects on the mechanical properties of polymers, Stained and spotted end product – Clogging of filters (Spinneret) of Masterbatch – Cracks and fractures on Masterbatch.
To prevent pigment problems in the production of Masterbatches lumps pigments (Agglomerate pigments) should be dispersed before production, this process would be known as Dispersant.
Dispersing agent (Dispersant) means that in the production of Masterbatches and polymer blends, the distribution of pigments or fillers is done uniformly.
Dispersant agents include three groups as follows:
• Waxes (Natural and synthetic)
• Organic acids and their derivatives (esters of acids – fatty acids – amide acids)
• Fluorinated polymers
One of the most important and widely used distribution factors in the plastics and polymer industry are polyethylene-based waxes. Polyethylene wax, known as a low molecular weight polymer wax, in addition to its good dispersing effect in the distribution of pigments, is also used as a lubricant and release agent in the production of plastics and PVC industries.
The wetting process of the pigments, along with the addition of a suitable amount of polyethylene wax, reduces the viscosity of the Masterbatch melt (Melt Viscosity) and the full extent and distribution of the pigments without adverse effects on the Masterbatch.
Polyethylene wax in Polyolefins causes the pigments (Colorful particles) to be well wetted and the color dispersion in them to be done well. Polyethylene wax reduces the viscosity of the masterbatch melt and thus increases the number of pigments in the masterbatch.
Polyethylene wax in engineering polymer compounds (styrene-based polymers) makes the product surface shiny – as a separating agent from the mold (release agent) – Reduces viscosity and increases dispersion.
The use of polyethylene wax in the production of Masterbatches has many advantages such as increasing color intensity and color stability, saving paint consumption, the viscosity of the Masterbatch melt – increasing the transparency of the film surface – reducing the formation of stains and shadows on the Masterbatch surface – less broken Masterbatch fibers – Lump production is lower, especially in downstream processes.
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Ms.June Yan
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