Influence of PE Wax on Coloring Strength of Organic Pigments

2022-04-10   Pageview:23

When the content of polyethylene wax is 10%, the color strength of the color masterbatch prepared by the internal mixing-twin-screw extrusion granulation process is about higher than that of the color masterbatch prepared by the high-mixing-twin-screw extrusion granulation process. 10%. When the content of polyethylene wax is 20%, the difference in coloring strength is only 3%, which is equivalent to the coloring strength of the masterbatch produced by the internal mixing-twin screw extrusion granulation process with 10% polyethylene wax content. The color strength of the color masterbatch prepared by Banbury-twin-screw extrusion granulation process in the formula without polyethylene wax is still higher than that of the color masterbatch containing 10% polyethylene wax through high-mixing-twin-screw extrusion granulation process. Masterbatch is about 10% higher.

1. The internal mixing-twin-screw granulation process can disperse the phthalocyanine blue pigment more effectively than the high-mixing-twin-screw granulation process;

2. Under the mixing-twin-screw granulation process, the coloring strength of the color masterbatch made without polyethylene wax is higher than that of the color masterbatch made with 10% polyethylene wax under the high-mixing-twin-screw granulation process about 10%;

3. Under the same polyethylene wax content, the coloring strength of the masterbatch obtained under the Banbury-twin-screw granulation process is 3% higher than that of the masterbatch obtained under the high-mixing-twin-screw granulation process 12%.

Why can’t paraffin be used as a dispersant in masterbatches? pe wax suppliers mumbai

Paraffin wax has applications in the production of masterbatches, but it is not possible to use it as a dispersant.

because:

①The heat resistance of paraffin wax is poor. According to isothermal thermogravimetric analysis, the loss reaches 20% within 10 minutes below 200 °C, so it cannot be used as a dispersant;

②It is also not advisable to use paraffin wax to partially replace polyethylene wax to reduce the cost. The addition of paraffin wax will reduce the viscosity of the system, thus affecting the shear dispersion effect, and it is impossible to obtain a well-dispersed color masterbatch.

Therefore, paraffin cannot be used as a dispersant.

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