Polyethylene Wax (PE Wax) is a low molecular weight polyethylene that is used as an external lubricant, dispersing agent, and surface modifier. It is widely used in the plastic, rubber, coating, and printing industries due to its thermal stability, excellent lubricity, and high melting point.
| Property | Typical Value |
|---|---|
| Appearance | White powder or flakes |
| Melting Point | 100 – 110 °C |
| Viscosity (140 °C) | 10 – 20 cps |
| Density (25 °C) | 0.92 – 0.95 g/cm³ |
| Penetration | ≤ 2.0 dmm |
| Acid Value | ≤ 1.0 mg KOH/g |
| Problem | PE Wax Advantage |
|---|---|
| Poor flow during extrusion | Acts as external lubricant for smoother processing |
| Pigment agglomeration | Improves pigment wetting and dispersion |
| Coating surface easily scratched | Enhances hardness and scratch resistance |
| Sticking in mold release | Improves separation and demolding |
Q1: Is PE Wax compatible with other waxes or lubricants?
Yes, it can be blended with oxidized wax, paraffin wax, and metal stearates.
Q2: Can PE Wax be used in food-grade applications?
Only if specified as food-grade compliant. Regular PE wax is for industrial use.
Q3: What is the typical addition level?
0.5 – 2.0 phr depending on the process and resin system.
