The Role Of Polyethylene Wax(PE Wax) In PVC

The role of polyethylene wax in PVC. During the production of PVC pipe profiles, there will be phenomena of mattness and poor brightness. As a PVC lubricant, paraffin wax has a low softening point and poor dispersion. When the temperature during the production process is too high, the paraffin wax basically liquefies and becomes gaseous and evaporates. When used in PVC pipes, the paraffin wax is difficult to Make a difference. If the dispersion effect is not good, the PVC pipe profiles will have stains on the surface.

PVC pipe profiles produced from polyethylene wax (PE wax) will not have such problems, because the softening point of polyethylene wax itself is high, and under high temperature conditions, polyethylene wax (PE wax) It just becomes liquid, has high viscosity, and polyethylene wax (PE wax) does not disperse well, but its brightness is very good. Polyethylene wax (PE wax) has low viscosity, good dispersion, and its brightness is not bad.

Polyolefin wax has a very strong polar center and a very long non-polar carbon chain. In the structure of polyethylene wax, the part that is compatible with the plastic in terms of polarity acts as internal lubrication, and the part that is incompatible with the plastic in terms of polarity acts as internal lubrication. An important application of polyethylene wax is in the processing of PVC. Compared with fatty acid lubricants, polyolefin wax does not adversely affect melt tension and Vicat softening point, and provides excellent anti-blocking and flow control effects. 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.

Polyolefin wax is the only known plastic lubricant that has both internal and external lubrication (release effect), while maintaining high transparency and having almost no effect on gelation. In addition, the low volatility characteristics of PE wax are extremely important for calendering and vacuum degassing.

As an internal lubricant, polyethylene 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 and heat generation of the plastic melt. and melt fluidity