Polyethylene wax: an indispensable additive in PVC manufacturing

In the PVC (polyvinyl chloride) manufacturing industry, the role of polyethylene wax (PE wax) is crucial. It not only affects the processing performance and appearance quality of PVC products, but also determines the stability and durability of the products to a certain extent. This article will explore in depth the multiple roles of polyethylene wax in PVC manufacturing.

1. Improve processing fluidity

During the processing of PVC materials, due to their high viscosity and large shear, it is easy to cause processing difficulties and reduce production efficiency. As an efficient lubricant, polyethylene wax can effectively improve the fluidity of PVC, reduce the friction between materials and processing machinery, reduce processing energy consumption, and improve production efficiency. At the same time, it can also make PVC products smoother during the extrusion process, reduce scratches and defects on the surface of the products, and improve the appearance quality of the products.

2. Improve thermal stability

PVC materials are prone to decomposition and discoloration during high-temperature processing, affecting the performance and quality of the products. Polyethylene wax has good thermal stability, can maintain stable performance at high temperatures, and effectively inhibit the decomposition and discoloration of PVC. At the same time, it can also absorb HCL produced by PVC dechlorination, repair the defects of PVC chains, and improve the thermal stability of PVC products.

3. Enhance filler dispersibility

In the production process of PVC products, various fillers are often added to improve product performance and reduce costs. However, the addition of fillers often affects the fluidity and processing performance of PVC. Polyethylene wax, as an excellent dispersant, can improve the compatibility between PVC and fillers, make the fillers evenly dispersed in PVC, and improve the mechanical properties and durability of the product.

4. Improve product gloss

The addition of polyethylene wax can also improve the surface gloss of PVC products. During the processing, polyethylene wax can form a uniform and smooth film, making the surface of the product smoother and more delicate, and improving the appearance quality of the product. At the same time, it can also prevent the product from sticking to the mold during the processing and improve demolding.

5. Reduce precipitation

In the production process of PVC products, precipitation may occur due to various reasons, that is, white powder or spots appear on the surface of the product. This not only affects the appearance quality of the product, but also may affect the performance of the product. The addition of polyethylene wax can effectively reduce the occurrence of precipitation and improve the overall quality of the product.

In summary, polyethylene wax plays an indispensable role in PVC manufacturing. It can not only improve the processing performance of PVC, enhance thermal stability, enhance filler dispersion, and improve product gloss, but also reduce the occurrence of precipitation. Therefore, in the production process of PVC products, the reasonable selection and use of polyethylene wax is one of the important measures to ensure product quality and performance.