As is well known, polyethylene wax is widely used in color masterbatches. Today, Sainuo will take you to understand the selection principles of  pe wax in the production of color masterbatches.

(1) The variety selection of polyethylene wax in the color master batch formula needs to consider both the pigment and plastic carrier resin in the color master batch, as well as the resin required for coloring the color master batch. This is because according to the principle of similar solubility, homopolymer polyethylene wax is suitable for non polar plastics such as polyethylene and polypropylene, and polyolefin plastics. However, the polar groups are introduced into the copolymer polyethylene wax molecules to introduce carboxyl groups, which are then modified through esterification. Therefore, it is suitable for polar polychloroethylene, polystyrene, ABS, and engineering plastics. The selected polyethylene wax variety can only be mixed and dispersed with each other if it has good compatibility with the carrier resin. The selection of polyethylene wax varieties is also suitable for polarity matching of various pigments for the same reason.

(2) Polyethylene wax has wetting and dispersing functions in the processing of color masterbatches. An ideal wetting and dispersing agent has a relatively low viscosity during its wetting treatment stage (relatively low temperature) to facilitate the wetting of pigment particles; During the shear dispersion stage (relatively high temperature), it is hoped that the viscosity can be higher, which will have a significant impact on shear dispersion. However, when pigments are dispersed in plastic, the main process is shear force. If the viscosity is too low, it is not conducive to dispersion. In conventional processing, increasing the temperature of the dispersion system is beneficial for the wetting and permeation of pigment particles; Lowering the temperature is more conducive to the shear dispersion of pigment particles. How to find processing conditions and methods that are conducive to wetting pigment particles while effectively dispersing them is something we must carefully consider and treat. Therefore, we need to comprehensively and systematically consider and choose the variety of polyethylene wax.

(3) The selection of polyethylene wax should consider factors such as environmental and product safety, such as low molecular weight wax products that can increase volatility and cause environmental pollution and product odor. If such wax is used in sensitive applications such as plastic food packaging materials, children's toys, etc., it will cause very serious adverse consequences. Therefore, The selection of such a relatively important auxiliary material must be both cautious and cautious.

(4) Choose different types of polyethylene wax based on the needs of end customers. If the color masterbatch is used for low-end applications such as garbage bags, trash cans, plastic films, etc., customers can choose by-product wax or cracking wax. If the color masterbatch is used for mid range applications and requires dispersion and flavor, then synthetic polyethylene wax should be chosen. If the color masterbatch is used for special applications that require harsh taste and heat resistance, then Ziegler Nata or metallocene polymerized polyethylene wax should be chosen. At this point, users should not only choose polyethylene wax as a dispersant, but also consider other requirements from the end application.

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Qingdao Sainuo Group. We are manufacturer for PE wax, PP wax, OPE wax, EVA wax, PEMA,EBS,Zinc/Calcium Stearate…. Our products have passed the REACH, ROHS, PAHS, FDA testing.

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