Application of PE wax in PVC

2021-06-21   Pageview:698

Polyethylene wax is widely used in the manufacturing process of PVC.

Polyethylene wax has a very strong polar center and a long non-polar carbon chain. In the structure of the polyethylene wax, the part that is compatible with the plastic in polarity plays the role of internal lubrication, and the part that is incompatible with the plastic in polarity plays the role of external lubrication and demoulding.

pe wax for pvc application
1, Lubricating effect
PE wax is plastic lubricant that can have both internal and external lubrication (release effect), while maintaining a high degree of transparency, and has little effect on gelation. The low volatility of PE wax is extremely important for calendering and vacuum degassing.

2, Compatibility
As an internal lubricant, PE wax has good compatibility with polymers. It plays a role in reducing the intermolecular cohesion of the polymer inside the polymer, thereby improving the internal friction and heat generation of the plastic melt and the fluidity of the melt. .

3, External lubricity
The role 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 from the melt to the outside, so it can form a lubricating thin layer at the interface between the plastic melt and the metal.

Polyethylene wax has excellent properties, high softening point, low viscosity, high molecular weight, low heat loss, strong external lubrication, good metal peeling, easy to disperse, high product gloss, relative Good capacity, anti-precipitation, and good mold release. It is suitable for PVC wood plastic industry, wide foam board industry, large diameter pipe, profile industry, threading pipe industry, cable material industry, etc.


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