Understanding the role of PE wax and oxidized polyethylene wax at the micro level can help us understand the principle of lubrication more intuitively and scientifically, so as to optimize the formula and produce better PVC products.

According to the research of the University of South Africa, the microscopic performance of PE wax in the actual processing of PVC can be observed by using the scanning electron microscope. We can see that the gray is PVC particles, and the red is polyethylene wax. Non-polar polyethylene wax cannot be combined with PVC particles due to its incompatibility with PVC. It mainly acts between PVC particles. It can delay the plasticization and avoid the adhesion of PVC resin with metal screw and barrel.

The performance of Fischer-Tropsch wax is similar to that of PE wax, both of which play the role of external lubrication.
Oxidized polyethylene wax has polarity and can be combined with PVC resin. Through scanning electron microscope, we can find that compared with PE wax, oxidized wax can better coat every PVC particle, which is equivalent to putting a lubricating coat on every PVC particle accurately.Therefore, in the process of processing, no matter how the screw is sheared, it will not lose the lubricating property and ensure the demoulding property in the later stage of processing; The internal lubrication of oxidized polyethylene wax can also promote plasticization, thus improving the processing efficiency and increasing the daily production of the factory; And in PVC products filled with high calcium powder.

Oxidized polyethylene wax can provide better protection for the screw, thus extending the service life of the screw.
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