The Role Of PE Wax In PVC Pipes

The role of PE wax in PVC pipes. During the production of PVC pipe profiles, there will be phenomena of mattness and poor brightness. Using polyethylene wax as a lubricant for PVC pipe profiles has better results. Because the softening point of polyethylene wax itself is high, and under high temperature conditions, polyethylene wax (PE wax) will simply become liquid with high viscosity, and the polyethylene wax (PE wax) will not disperse well, but the brightness will be poor. Very good. If the viscosity of polyethylene wax (PE wax) is low, it has good dispersion and good brightness.

1. Lubricant. As a plastic lubricant, PE wax can have both internal and external lubrication (release effect), while maintaining high transparency and being an excellent lubricant that has almost no effect on gelation. In addition, the low volatility characteristics of PE wax are extremely important for calendering and vacuum degassing.
2. Anti-adhesion. Compared with fatty acid lubricants, PE wax does not adversely affect melt tension and Vicat softening point, and provides excellent anti-adhesion and flow control functions. PE wax can be used to control melting in special processing methods. It has good compatibility with other ingredients even when added in large amounts.
3. Compatibility. As an internal lubricant, PE wax has good compatibility with polymers. It plays a role in reducing the cohesion between polymer molecules inside the polymer, thereby improving the internal friction heat and melt melt of the plastic melt. of liquidity.

The function of PE wax as an external lubricant is mainly to improve the friction between the polymer melt and the hot metal surface of the processing equipment. It has poor compatibility with polymers and easily migrates out of the melt, so it can form a lubricating thin layer at the interface between the plastic melt and the metal.